WO2009061109A1 - Excavating tool insert - Google Patents

Excavating tool insert Download PDF

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Publication number
WO2009061109A1
WO2009061109A1 PCT/KR2008/006480 KR2008006480W WO2009061109A1 WO 2009061109 A1 WO2009061109 A1 WO 2009061109A1 KR 2008006480 W KR2008006480 W KR 2008006480W WO 2009061109 A1 WO2009061109 A1 WO 2009061109A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool insert
excavating tool
support member
identification mark
hard layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2008/006480
Other languages
French (fr)
Inventor
Jeang Ook Oh
Byong Joon Park
Dong Ik Choi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iljin Diamond Co Ltd
Original Assignee
Iljin Diamond Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iljin Diamond Co Ltd filed Critical Iljin Diamond Co Ltd
Publication of WO2009061109A1 publication Critical patent/WO2009061109A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
    • B23B27/1603—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with specially shaped plate-like exchangeable cutting inserts, e.g. chip-breaking groove
    • B23B27/1611—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with specially shaped plate-like exchangeable cutting inserts, e.g. chip-breaking groove characterised by having a special shape
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
    • E21B10/5735—Interface between the substrate and the cutting element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/245—Making recesses, grooves etc on the surface by removing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/20—Nitride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2302/00—Metal Compound, non-Metallic compound or non-metal composition of the powder or its coating
    • B22F2302/40—Carbon, graphite
    • B22F2302/406—Diamond
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2204/00—End product comprising different layers, coatings or parts of cermet

Definitions

  • the present invention relates to an excavating tool insert, and more particularly, to an excavating tool insert which can be still easily identified even when a surface of the excavating tool insert is worn away.
  • An excavating tool insert is coupled to a tool assembly that is used in excavating oil wells or in cutting works to excavate rock beds that are underground or to cut metals or other materials.
  • a plurality of excavating tool inserts are mounted to a cutting tool for use.
  • An excavating tool insert includes a pillar-shaped support member and a super hard layer formed at an end of the support member.
  • the support member may be formed by sintering a tungsten-based material.
  • a powder material for a super hard layer such as diamond, is put into a mold and the support member is also put into the mold, and both are sintered in a sintering furnace at a high temperature and a high pressure to couple the support member and the super hard layer as a single unit.
  • An identification mark is marked on an outer surface of the excavating tool insert so that the manufacturer, the standards, and components, or the like, of the excavating tool insert can be displayed to the user.
  • the excavating tool insert can cut rock beds and so forth as the outer circumferential surface of the super hard layer contacts the rock beds and cuts the same as the excavating tool rotates during a cutting operation. With time, the excavating tool insert is worn away.
  • the identification mark marked on the outer surface of the excavating tool insert disappears due to abrasion. If the identification mark is rubbed out, the exact characteristics of the excavating tool insert cannot be identified, and problems may occur in selecting a proper replacement excavating tool insert.
  • the present invention provides an excavating tool insert which can be still easily identified even when the surface of the excavating tool insert is worn away.
  • an excavating tool insert including: a support member having a first hardness and a first surface; and a super hard layer that is coupled to the first surface of the support member and has a second hardness that is greater than the first hardness, wherein the first surface of the support member comprises an identification mark that is embossed or engraved, and the super hard layer is formed to adhere to the first surface of the support member.
  • the identification mark may be formed to identify the manufacture year, standards, the name of the company, or the estimated usable period of the excavating tool insert.
  • the identification mark may include a number.
  • the identification mark may include a letter.
  • the identification mark may include a geometrical figure.
  • the identification mark may include the brand name or the logo of the company.
  • the excavating tool insert includes an identification mark carved in an interface between the support member and the super hard layer, and thus, even when a surface of the excavating tool insert is worn away, the product information of the excavating tool insert can be easily identified.
  • FIG. 1 is a perspective view illustrating an excavating tool insert according to an embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the excavating tool insert of FIG. 1 , a support member and a super hard layer of the excavating tool insert being separate from each other;
  • FIG. 3 is a cross-sectional view taken along a line Ill-Ill of FIG. 2;
  • FIG. 4 is an exploded perspective view of an excavating tool insert according to another embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along a line V-V of FIG. 4.
  • FIGS. 6A, 6B, and 6C are plan views illustrating excavating tool inserts according to other embodiments of the present invention.
  • FIG. 1 is a perspective view illustrating an excavating tool insert 100 according to an embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the excavating tool insert 100 of FIG. 1 , a support member 110 and a super hard layer 120 of the excavating tool being separate from each other
  • FIG. 3 is a cross-sectional view taken along a line Ill-Ill of FIG. 2.
  • the excavating tool insert 100 includes a support member 110 and a super hard layer 120.
  • the support member 110 is pillar-shaped, and has a first surface 111. Referring to FIGS. 1 and 2, the support member 110 is cylinder-shaped; however the present invention is not limited thereto, and thus, the support member 110 can have other various pillar shapes.
  • the first surface 111 is coupled to the super hard layer 120.
  • the first surface 111 includes an identification mark 112.
  • the identification mark 112 is engraved.
  • the identification mark 112 may display the manufacture year, the name of the company, or the estimated usable period of the excavating tool insert 100.
  • the support member 110 may be formed of a carbide alloy containing tungsten (W), tantalum (Ta), vanadium (V), titanium (Ti), etc. Also, a binder may be included in the support member 110 so that materials to be sintered can be easily bonded to each other. Examples of the binder include cobalt (Co), iron (Fe), nickel (Ni), etc.
  • the support member 110 may include cobalt-based tungsten carbide (WC-Co) alloy.
  • the support member 110 may be formed by sintering a cobalt-based tungsten carbide material. For the sintering operation, a cobalt-based tungsten carbide material may be put into a mold and sintered.
  • a mark equal to the identification mark 112 is embossed on the mold.
  • the support member 110 is fixed in the mold and sintered, and then the identification mark 112 is finally engraved in the first surface 111 with the form of the mold.
  • the identification mark 112 may be formed after the sintering operation. After sintering the support member 110, the first surface 111 of the support member 110 may be etched to form the engraved identification mark 112.
  • the super hard layer 120 is coupled to the first surface 111 of the support member 110.
  • the super hard layer 120 may include diamond or cubic boron nitride.
  • the super hard layer 120 may particularly include polycrystalline diamond to increase its hardness.
  • the super hard layer 120 is formed of a material having greater rigidity than the support member 110 so as to conduct cutting or excavating operations.
  • a powder material for forming the super hard layer 120 is put into a mold. Then the support member 110 is put into the mold such that the first surface 111 , which is to be coupled to the super hard layer 120, contacts a material for forming the super hard layer 120. Then the materials for forming the super hard layer 120 are sintered at a high temperature and a high pressure so as to adhere to the first surface 111 of the support member 110 and fill into the engraved identification mark 112.
  • the sintering operation may be conducted at a high temperature and a high pressure of up to 1500 0 C and 6 GPa.
  • the mold into which the above-described support member 110 and the super hard layer 120 are input is sealed using a large sealing cell to perform the sintering operation. After the sintering operation is completed, the mold on the outer circumference of the excavating tool insert 100 and the sealing cell are removed, and processed for use.
  • the excavating tool insert 100 is coupled to an excavating tool so as to conduct a cutting operation or conduct an excavating operation while contacting rock beds. With time, the support member 110 and the super hard layer 120 need to be replaced because of abrasion caused by contact with the rock beds and so forth. For easy replacement, the brand name, the manufacturer, the standards, and so forth of the excavating tool insert 100 are marked on the outer circumferential surface of the excavating tool insert 100.
  • the outer circumferential surface of the excavating tool insert 100 is worn away due to repeated cutting operations, and the brand name, the manufacturer, the standards, and so forth marked on the outer circumferential surface of the excavating tool insert 100 disappear. Accordingly, it is not easy to identify the type, the characteristics, and the standards of the excavating tool insert 100 attached to the excavating tool over a predetermined period of time.
  • the excavating tool insert 100 has the identification mark 112 marked on the first surface of the support member 110. Also, the first surface 111 of the support member 110 is bonded to the super hard layer 120, and thus, the identification mark 112 is not exposed during the cutting operation and the identification mark 112 is not rubbed out even after repeated cutting operations. As a result, the characteristics of the excavating tool insert 100 can be easily determined and identified.
  • the identification mark 112 of the excavating tool insert 100 is not exposed to the outside and thus cannot be distinguished with human eyes.
  • the identification mark 112 of the excavating tool insert 100 may be identified by a non-destructive inspection method.
  • the identification mark 112 of the excavating tool insert 100 may be identified by ultrasonic wave inspection; in detail, the identification mark 112 formed in the first surface 112 of the support member 110 may be identified using a c-scan method.
  • the identification mark 112 formed in the first surface 112 of the support member 110 may be identified using a c-scan method; however, the present invention is not limited thereto, and thus, the first surface 112 of the support member 110 can be identified with other various non-destructive inspection methods.
  • FIG. 4 is an exploded perspective view of an excavating tool insert 200 according to another embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along a line V-V of FIG. 4.
  • the excavating tool insert 200 includes a support member 210 and a super hard layer 220.
  • the support member 210 is pillar-shaped, and has a first surface 211 that is bonded to the super hard layer 220.
  • the first surface 211 includes an identification mark 212 that is embossed.
  • the identification mark 212 may display the manufacture year, the company name, or the estimated usable period of the excavating tool insert 200.
  • the support member 210 may be formed of a carbide alloy containing tungsten
  • a binder may be included in the support member 210 so that materials to be sintered can be easily bonded to each other.
  • the binder include cobalt (Co), iron (Fe), nickel (Ni), etc.
  • the support member 210 may include a cobalt-based tungsten carbide (WC-Co) alloy.
  • the support member 210 may be formed by sintering a cobalt-based tungsten carbide material. For the sintering operation, a cobalt-based tungsten carbide material may be put into a mold and sintered.
  • a mark equal to the identification mark 212 is engraved in the mold.
  • the support member 210 is fixed in the mold and sintered, and then the identification mark 212 is finally embossed in the first surface 211 with the form of the mold.
  • the identification mark 212 may be formed after the sintering operation. After sintering the support member 210, the first surface 211 may be etched, except for an area for forming the identification mark 212. Finally, the embossed identification mark 212 can be formed.
  • the super hard layer 220 is coupled to the first surface 211 of the support member 210.
  • the super hard layer 220 may also be formed of the materials of the above-described embodiment.
  • Powder materials for forming the super hard layer 220 are put into a predetermined mold. Then the support member 210 is input to the mold such that the first surface 211, which is to be coupled to the super hard layer 220, contacts the materials for forming the super hard layer 220.
  • the materials for forming the super hard layer 220 are sintered at a high temperature and a high pressure such that the materials for forming the super hard layer 220 adhere to the identification mark 212 and are filled in a depressed portion of the first surface 211 formed due to the identification mark 212.
  • the excavating tool insert 200 also includes the identification mark 212 formed in the first surface 211 of the support member 210, which is not exposed during cutting operations like the previous embodiment. Accordingly, even after repeated cutting process or excavating operations on rock beds, etc., the identification mark 212 does not disappear. Also, the identification mark 212 can be identified using a non-destructive inspection method.
  • FIGS. 6A, 6B, and 6C are plan views illustrating excavating tool inserts according to other embodiments of the present invention. Here, for convenience of explanation, only a first surface 311 of a support member 310 is illustrated.
  • An identification mark 312 may be formed in the first surface 312 of the support member 310.
  • the identification mark 312 may have various shapes as to the ones shown. As described above, the identification mark 312 may be embossed or engraved.
  • the contents of the identification mark 312 may be letters, numbers, or marks, or a combination thereof. That is, any contents that identify the excavating tool insert can be formed in various manners.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Composite Materials (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

Provided is an excavating tool insert including: a support member having a first hardness and a first surface; and a super hard layer that is coupled to the first surface of the support member and has a second hardness that is greater than the first hardness, wherein the first surface of the support member comprises an identification mark that is embossed or engraved, and the super hard layer is formed to adhere to the first surface of the support member. Accordingly, the excavating tool insert can be easily identified even when the surface of the excavating tool insert is worn away due to cutting or excavating operations.

Description

EXCAVATING TOOL INSERT
TECHNICAL FIELD The present invention relates to an excavating tool insert, and more particularly, to an excavating tool insert which can be still easily identified even when a surface of the excavating tool insert is worn away.
BACKGROUND ART An excavating tool insert is coupled to a tool assembly that is used in excavating oil wells or in cutting works to excavate rock beds that are underground or to cut metals or other materials. In general, a plurality of excavating tool inserts are mounted to a cutting tool for use.
An excavating tool insert includes a pillar-shaped support member and a super hard layer formed at an end of the support member. The support member may be formed by sintering a tungsten-based material. In order to form the super hard layer on the support member, a powder material for a super hard layer, such as diamond, is put into a mold and the support member is also put into the mold, and both are sintered in a sintering furnace at a high temperature and a high pressure to couple the support member and the super hard layer as a single unit.
An identification mark is marked on an outer surface of the excavating tool insert so that the manufacturer, the standards, and components, or the like, of the excavating tool insert can be displayed to the user. The excavating tool insert can cut rock beds and so forth as the outer circumferential surface of the super hard layer contacts the rock beds and cuts the same as the excavating tool rotates during a cutting operation. With time, the excavating tool insert is worn away.
As a result, the identification mark marked on the outer surface of the excavating tool insert disappears due to abrasion. If the identification mark is rubbed out, the exact characteristics of the excavating tool insert cannot be identified, and problems may occur in selecting a proper replacement excavating tool insert.
DETAILED DESCRIPTION OF THE INVENTION TECHNICAL PROBLEM
The present invention provides an excavating tool insert which can be still easily identified even when the surface of the excavating tool insert is worn away.
TECHNICAL SOLUTION
According to an aspect of the present invention, there is provided an excavating tool insert including: a support member having a first hardness and a first surface; and a super hard layer that is coupled to the first surface of the support member and has a second hardness that is greater than the first hardness, wherein the first surface of the support member comprises an identification mark that is embossed or engraved, and the super hard layer is formed to adhere to the first surface of the support member.
The identification mark may be formed to identify the manufacture year, standards, the name of the company, or the estimated usable period of the excavating tool insert.
The identification mark may include a number.
The identification mark may include a letter.
The identification mark may include a geometrical figure.
The identification mark may include the brand name or the logo of the company.
ADVANTAGEOUS EFFECTS
According to the present invention, the excavating tool insert includes an identification mark carved in an interface between the support member and the super hard layer, and thus, even when a surface of the excavating tool insert is worn away, the product information of the excavating tool insert can be easily identified.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view illustrating an excavating tool insert according to an embodiment of the present invention; FIG. 2 is an exploded perspective view of the excavating tool insert of FIG. 1 , a support member and a super hard layer of the excavating tool insert being separate from each other;
FIG. 3 is a cross-sectional view taken along a line Ill-Ill of FIG. 2;
FIG. 4 is an exploded perspective view of an excavating tool insert according to another embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along a line V-V of FIG. 4; and
FIGS. 6A, 6B, and 6C are plan views illustrating excavating tool inserts according to other embodiments of the present invention.
BEST MODE
The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.
FIG. 1 is a perspective view illustrating an excavating tool insert 100 according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the excavating tool insert 100 of FIG. 1 , a support member 110 and a super hard layer 120 of the excavating tool being separate from each other, and FIG. 3 is a cross-sectional view taken along a line Ill-Ill of FIG. 2.
Referring to FIG. 1, the excavating tool insert 100 includes a support member 110 and a super hard layer 120.
The support member 110 is pillar-shaped, and has a first surface 111. Referring to FIGS. 1 and 2, the support member 110 is cylinder-shaped; however the present invention is not limited thereto, and thus, the support member 110 can have other various pillar shapes. The first surface 111 is coupled to the super hard layer 120. The first surface 111 includes an identification mark 112. The identification mark 112 is engraved. The identification mark 112 may display the manufacture year, the name of the company, or the estimated usable period of the excavating tool insert 100.
The support member 110 may be formed of a carbide alloy containing tungsten (W), tantalum (Ta), vanadium (V), titanium (Ti), etc. Also, a binder may be included in the support member 110 so that materials to be sintered can be easily bonded to each other. Examples of the binder include cobalt (Co), iron (Fe), nickel (Ni), etc.
For example, the support member 110 may include cobalt-based tungsten carbide (WC-Co) alloy. The support member 110 may be formed by sintering a cobalt-based tungsten carbide material. For the sintering operation, a cobalt-based tungsten carbide material may be put into a mold and sintered.
A mark equal to the identification mark 112 is embossed on the mold. Thus, the support member 110 is fixed in the mold and sintered, and then the identification mark 112 is finally engraved in the first surface 111 with the form of the mold. Alternatively, the identification mark 112 may be formed after the sintering operation. After sintering the support member 110, the first surface 111 of the support member 110 may be etched to form the engraved identification mark 112.
The super hard layer 120 is coupled to the first surface 111 of the support member 110. The super hard layer 120 may include diamond or cubic boron nitride.
The super hard layer 120 may particularly include polycrystalline diamond to increase its hardness. The super hard layer 120 is formed of a material having greater rigidity than the support member 110 so as to conduct cutting or excavating operations.
A powder material for forming the super hard layer 120 is put into a mold. Then the support member 110 is put into the mold such that the first surface 111 , which is to be coupled to the super hard layer 120, contacts a material for forming the super hard layer 120. Then the materials for forming the super hard layer 120 are sintered at a high temperature and a high pressure so as to adhere to the first surface 111 of the support member 110 and fill into the engraved identification mark 112. Here, the sintering operation may be conducted at a high temperature and a high pressure of up to 15000C and 6 GPa. In order to maintain such a high temperature and high pressure, the mold into which the above-described support member 110 and the super hard layer 120 are input is sealed using a large sealing cell to perform the sintering operation. After the sintering operation is completed, the mold on the outer circumference of the excavating tool insert 100 and the sealing cell are removed, and processed for use.
The excavating tool insert 100 is coupled to an excavating tool so as to conduct a cutting operation or conduct an excavating operation while contacting rock beds. With time, the support member 110 and the super hard layer 120 need to be replaced because of abrasion caused by contact with the rock beds and so forth. For easy replacement, the brand name, the manufacturer, the standards, and so forth of the excavating tool insert 100 are marked on the outer circumferential surface of the excavating tool insert 100.
However, the outer circumferential surface of the excavating tool insert 100 is worn away due to repeated cutting operations, and the brand name, the manufacturer, the standards, and so forth marked on the outer circumferential surface of the excavating tool insert 100 disappear. Accordingly, it is not easy to identify the type, the characteristics, and the standards of the excavating tool insert 100 attached to the excavating tool over a predetermined period of time.
However, the excavating tool insert 100 according to the current embodiment of the present invention has the identification mark 112 marked on the first surface of the support member 110. Also, the first surface 111 of the support member 110 is bonded to the super hard layer 120, and thus, the identification mark 112 is not exposed during the cutting operation and the identification mark 112 is not rubbed out even after repeated cutting operations. As a result, the characteristics of the excavating tool insert 100 can be easily determined and identified.
The identification mark 112 of the excavating tool insert 100 is not exposed to the outside and thus cannot be distinguished with human eyes. The identification mark 112 of the excavating tool insert 100 may be identified by a non-destructive inspection method. For example, the identification mark 112 of the excavating tool insert 100 may be identified by ultrasonic wave inspection; in detail, the identification mark 112 formed in the first surface 112 of the support member 110 may be identified using a c-scan method. In the present embodiment, the identification mark 112 formed in the first surface 112 of the support member 110 may be identified using a c-scan method; however, the present invention is not limited thereto, and thus, the first surface 112 of the support member 110 can be identified with other various non-destructive inspection methods. FIG. 4 is an exploded perspective view of an excavating tool insert 200 according to another embodiment of the present invention. FIG. 5 is a cross-sectional view taken along a line V-V of FIG. 4.
Referring to FIG. 4, the excavating tool insert 200 includes a support member 210 and a super hard layer 220. The support member 210 is pillar-shaped, and has a first surface 211 that is bonded to the super hard layer 220.
The first surface 211 includes an identification mark 212 that is embossed. The identification mark 212 may display the manufacture year, the company name, or the estimated usable period of the excavating tool insert 200. The support member 210 may be formed of a carbide alloy containing tungsten
(W), tantalum (Ta), vanadium (V), titanium (Ti), etc. Also, a binder may be included in the support member 210 so that materials to be sintered can be easily bonded to each other. Examples of the binder include cobalt (Co), iron (Fe), nickel (Ni), etc.
For example, the support member 210 may include a cobalt-based tungsten carbide (WC-Co) alloy. The support member 210 may be formed by sintering a cobalt-based tungsten carbide material. For the sintering operation, a cobalt-based tungsten carbide material may be put into a mold and sintered.
A mark equal to the identification mark 212 is engraved in the mold. Thus, the support member 210 is fixed in the mold and sintered, and then the identification mark 212 is finally embossed in the first surface 211 with the form of the mold.
Alternatively, the identification mark 212 may be formed after the sintering operation. After sintering the support member 210, the first surface 211 may be etched, except for an area for forming the identification mark 212. Finally, the embossed identification mark 212 can be formed.
The super hard layer 220 is coupled to the first surface 211 of the support member 210. The super hard layer 220 may also be formed of the materials of the above-described embodiment.
Powder materials for forming the super hard layer 220 are put into a predetermined mold. Then the support member 210 is input to the mold such that the first surface 211, which is to be coupled to the super hard layer 220, contacts the materials for forming the super hard layer 220. The materials for forming the super hard layer 220 are sintered at a high temperature and a high pressure such that the materials for forming the super hard layer 220 adhere to the identification mark 212 and are filled in a depressed portion of the first surface 211 formed due to the identification mark 212.
The excavating tool insert 200 according to the current embodiment of the present invention also includes the identification mark 212 formed in the first surface 211 of the support member 210, which is not exposed during cutting operations like the previous embodiment. Accordingly, even after repeated cutting process or excavating operations on rock beds, etc., the identification mark 212 does not disappear. Also, the identification mark 212 can be identified using a non-destructive inspection method.
FIGS. 6A, 6B, and 6C are plan views illustrating excavating tool inserts according to other embodiments of the present invention. Here, for convenience of explanation, only a first surface 311 of a support member 310 is illustrated.
An identification mark 312 may be formed in the first surface 312 of the support member 310. The identification mark 312 may have various shapes as to the ones shown. As described above, the identification mark 312 may be embossed or engraved. The contents of the identification mark 312 may be letters, numbers, or marks, or a combination thereof. That is, any contents that identify the excavating tool insert can be formed in various manners.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims

1. An excavating tool insert comprising: a support member having a first hardness and a first surface; and a super hard layer that is coupled to the first surface of the support member and has a second hardness that is greater than the first hardness, wherein the first surface of the support member comprises an identification mark that is embossed or engraved, and the super hard layer is formed to adhere to the first surface of the support member.
2. The excavating tool insert of claim 1 , wherein the identification mark is formed to identify the manufacture year, the standards, the name of the company, or the estimated usable period of the excavating tool insert.
3. The excavating tool insert of claim 1, wherein the identification mark comprises a number.
4. The excavating tool insert of claim 1 , wherein the identification mark comprises a letter.
5. The excavating tool insert of claim 1 , wherein the identification mark comprises a geometrical figure.
6. The excavating tool insert of claim 1 , wherein the identification mark comprises the brand name or the logo of the company.
7. The excavating tool insert of claim 1 , wherein the super hard layer comprises diamond or boron nitride.
PCT/KR2008/006480 2007-11-09 2008-11-04 Excavating tool insert Ceased WO2009061109A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0114352 2007-11-09
KR1020070114352A KR20090048128A (en) 2007-11-09 2007-11-09 Insert for cutting tool

Publications (1)

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WO2009061109A1 true WO2009061109A1 (en) 2009-05-14

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WO (1) WO2009061109A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3626848A1 (en) * 2018-09-19 2020-03-25 Ceratizit Austria Gesellschaft m.b.H. Solid body
WO2022144167A1 (en) * 2020-12-31 2022-07-07 Element Six (Uk) Limited A polycrystalline superhard construction and a method of making same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101410270B1 (en) * 2012-12-28 2014-06-30 일진다이아몬드(주) Poly crystalline diamond having the indicator for making differentiation of cutting area

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6123488A (en) * 1998-12-23 2000-09-26 Kennametal Inc. Cutting insert with universal identification
US6149695A (en) * 1998-03-09 2000-11-21 Adia; Moosa Mahomed Abrasive body
US20040037948A1 (en) * 2000-10-19 2004-02-26 Klaus Tank Method of making a composite abrasive compact
US20070042217A1 (en) * 2005-08-18 2007-02-22 Fang X D Composite cutting inserts and methods of making the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6149695A (en) * 1998-03-09 2000-11-21 Adia; Moosa Mahomed Abrasive body
US6123488A (en) * 1998-12-23 2000-09-26 Kennametal Inc. Cutting insert with universal identification
US20040037948A1 (en) * 2000-10-19 2004-02-26 Klaus Tank Method of making a composite abrasive compact
US20070042217A1 (en) * 2005-08-18 2007-02-22 Fang X D Composite cutting inserts and methods of making the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3626848A1 (en) * 2018-09-19 2020-03-25 Ceratizit Austria Gesellschaft m.b.H. Solid body
WO2020058035A1 (en) * 2018-09-19 2020-03-26 Ceratizit Austria Gesellschaft M.B.H. Hard-material body
WO2022144167A1 (en) * 2020-12-31 2022-07-07 Element Six (Uk) Limited A polycrystalline superhard construction and a method of making same

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