EP0841990A1 - Verschleissteile und verfahren zu deren herstellung - Google Patents
Verschleissteile und verfahren zu deren herstellungInfo
- Publication number
- EP0841990A1 EP0841990A1 EP96924838A EP96924838A EP0841990A1 EP 0841990 A1 EP0841990 A1 EP 0841990A1 EP 96924838 A EP96924838 A EP 96924838A EP 96924838 A EP96924838 A EP 96924838A EP 0841990 A1 EP0841990 A1 EP 0841990A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inlay
- metal
- casting
- wear
- wearing part
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000005266 casting Methods 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 239000011148 porous material Substances 0.000 claims abstract description 10
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 9
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
- 239000011707 mineral Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 239000002184 metal Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 20
- 238000010276 construction Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 239000010814 metallic waste Substances 0.000 claims description 3
- 239000003923 scrap metal Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 239000011159 matrix material Substances 0.000 description 2
- 230000003763 resistance to breakage Effects 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2210/00—Codes relating to different types of disintegrating devices
- B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like
Definitions
- the invention relates to a wearing part for the processing of minerals, construction waste and metal waste, 'with an impact body made of iron material, which has in the area of its wear zone at least one inlay made of metal oxide and / or metal carbide ceramic and intimately connected by composite casting with the impact body , and a process for their production.
- Wear parts of this type are used, for example, in shredder systems, hammer and impact mills to process minerals, construction waste, scrap and similar materials.
- wear parts and tools made of ferrous materials which have a high resistance to impact stress and at the same time have sufficient break resistance.
- these strength properties in particular the requirement for sufficient ductility, reduce the resistance of these wear parts to abrasive wear.
- the known wear parts must therefore be replaced at relatively short intervals, which leads to unproductive downtimes of the processing plants.
- Wearing parts of the type mentioned are known from German published patent application DE 36 18 195 AI.
- an inlay formed as a monolithic hard metal block is provided.
- This carbide inlay is in one Composite casting connected to the actual impact body of the wearing part.
- the well-known wear parts are used as hammers in hammer mechanisms, hammer mills and stone mills. Due to the arrangement of the hard metal inlay in the area of the strongest abrasive stress, they have a significantly improved durability compared to wear parts that do not have a corresponding inlay. Practical testing of the known wear parts shows, however, that often an insufficient hold between the impact body and the inlay is guaranteed. This entails the risk that the inlay breaks out of the impact body in one piece when subjected to very heavy loads. In addition, it can be seen that in the area of the transition between the hard metal inlay and the impact body, which consists of much softer iron material, there is a strong, step-like wear. This excessive removal in the area of the connection between the inlay and the impact body increases the risk of premature detachment of the inlay from the impact body.
- a method for producing a wearing part of the type mentioned is known from DE 33 15 125 Cl.
- wear-resistant zones are created on the wearing part in that when the wearing parts are produced by casting, hard metal particles are deposited in the respective zones, which are completely enclosed by an iron material during casting.
- the object of the invention is to use simple means the service life of wearing parts of the beginning to further improve the type mentioned so that, in addition to having sufficient resistance to impact stress and sufficient resistance to breakage, they also have increased resistance to abrasive wear.
- the invention is also based on the object of specifying a method for producing wear parts according to the invention.
- the solution to the above-mentioned object is that the inlay is perforated or sponge-like and the intimate connection between the impact body and the inlay is formed by iron material that has penetrated into the openings and pores of the inlay.
- the metal oxide and / or metal carbide ceramic inlays according to the invention each have a roughly porous structure and are penetrated by through openings. These openings passing through the respective inlay can be designed in the form of perforations.
- the inlays according to the invention can have a sponge-like, permeable structure, the openings and pores of which are connected to one another. The size of the openings and pores is chosen so that the iron material of the impact body not only surrounds the respective inlays on all sides during the manufacture of the wearing parts according to the invention, but penetrates into them. The result of this is that the respective inlay is held securely in the impact body, so that the inlay is prevented from breaking out of the composite thus created, even in the event of heavy impact stress.
- the matrix structure in the area of the zones subject to wear has an effect favorable for wear resistance, since the closely adjacent, repetitive, combined arrangement of tough iron material and hard ceramic material of the inlay creates a surface with optimal properties (hardness / toughness) with regard to the respective load.
- a secure hold of the inlay in the impact body can already be achieved in that the volume fraction, which is penetrated by iron material, is at least 10% of the free volume of the inlay formed by the openings and pores.
- Wear resistance can be achieved in that the free volume of the inlay is essentially completely filled with iron material. With such a complete penetration of the inlay with iron material, when the wear parts according to the invention are used later, the surfaces which are each exposed to a high level of abrasive wear have a network-like matrix of metal oxide and / or metal carbide ceramic and iron material.
- the inlay made of metal oxide and / or metal carbide ceramic can be arranged within the wear part in such a way that it encompasses its entire wear area. This configuration is particularly advantageous if the wear part is exposed to a predominantly abrasive stress.
- the inlay in the wearing part is only partially arranged where a predominantly abrasive wear occurs during later use.
- This arrangement is particularly useful with rotating striking tools of advantage, which on the one hand have areas with almost exclusively impact stress and on the other hand areas with impact-abrasive or predominantly abrasive stress.
- an iron material with sufficient resistance to impact wear and sufficient ductility and thus good break resistance can then be specifically provided, while the other areas have a high resistance to abrasive wear due to the metal-ceramic composite casting and, at the same time, a metal connection retain the remaining break resistance.
- the above-mentioned object is achieved in that a perforated or sponge-like inlay is introduced into a casting mold and cast with an iron-containing casting metal, and in that the casting metal penetrates into the openings and pores of the inlay during casting in such a way that the inlay after completion of the casting process is completely penetrated by the casting metal.
- Figure la shows a tool with a perforated inlay in a side view.
- Fig. Lb the tool of Figure la in longitudinal section.
- 2a shows a tool with a sponge-like inlay in a side view
- 2b shows the tool according to FIG. 2a in longitudinal section
- FIG. 3 shows a wearing part, in which the metallic-ceramic composite comprises the entire wearing surface, in a perspective view
- Fig. 4 is a tool that is only partially provided with a metallic-ceramic composite, in a perspective view.
- wear parts 10 and 11 are shown in the form of tools, the impact body 3 made of an iron material, which has a high resistance to impact stress and good resistance to breakage, and differently designed inlays 20 and 21 made of metal oxide or Include metal carbide ceramic.
- the tools are each provided with a bore 4 into which a bolt or the like can be inserted in order to attach the tool to a rotor, not shown, of a comminution system, such as a shredder system.
- the tools are produced by placing the inlays 20 and 21 in a suitable mold and casting them with a cast metal made of ferrous material in such a way that they form an intimate connection with the cast metal.
- the casting metal penetrates into the openings and pores of the respective inlay until the inlay is completely penetrated by the molten metal.
- the metallic-ceramic one formed from the sponge-like inlays 24 drawn through by the iron material comprises Composite the entire wear area.
- the relevant inlay 24 is arranged between two guide strips 31. This version should preferably be used where there is essentially only abrasive wear.
- FIG. 4 shows a mirror-symmetrically designed tool 3 which can be positively mounted in a rotating tool holder, not shown, of a comminution device, also not shown.
- the tool area 4 of the striking body 3 pointing in the direction of rotation or working direction D is essentially exposed to striking stress and is therefore made of an iron material with a relatively high resistance to striking wear and sufficient break resistance.
- a predominantly abrasive wear occurs on the back 15 facing away from the direction of rotation or working direction D of the tool.
- a sponge-like inlay 23 made of metal oxide or metal carbide ceramic, which has a high resistance to the abrasive stress and in the openings and pores of the iron material of the impact body 3 has penetrated, so that between the inlay 23 and the impact body 3 intimate connection is formed.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Powder Metallurgy (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19528512A DE19528512C2 (de) | 1995-08-03 | 1995-08-03 | Verschleißteile und Verfahren zu deren Herstellung |
| DE19528512 | 1995-08-03 | ||
| PCT/EP1996/002879 WO1997005951A1 (de) | 1995-08-03 | 1996-07-02 | Verschleissteile und verfahren zu deren herstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0841990A1 true EP0841990A1 (de) | 1998-05-20 |
| EP0841990B1 EP0841990B1 (de) | 1999-08-25 |
Family
ID=7768589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96924838A Expired - Lifetime EP0841990B1 (de) | 1995-08-03 | 1996-07-02 | Verschleissteile und verfahren zu deren herstellung |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0841990B1 (de) |
| AT (1) | ATE183669T1 (de) |
| AU (1) | AU6516896A (de) |
| DE (2) | DE19528512C2 (de) |
| ES (1) | ES2137715T3 (de) |
| WO (1) | WO1997005951A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7513295B2 (en) | 2001-12-04 | 2009-04-07 | Magotteaux International Sa | Cast parts with enhanced wear resistance |
| US7820299B2 (en) | 2003-08-20 | 2010-10-26 | F.A.R.- Fonderie Acciaierie Roiale-Spa | Method to produce an element subject to wear, and element subject to wear thus obtained |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU224208B1 (hu) | 1996-10-01 | 2005-06-28 | Magotteaux International S.A. | Összetett anyagú kopásálló alkatrész |
| NL1019297C1 (nl) | 2001-06-26 | 2003-01-07 | Johannes Petrus Andreas Zanden | Versnellingsblok met verstevigingsdeel. |
| ATE332750T1 (de) * | 2002-06-26 | 2006-08-15 | Passage De Douro Bvba | Strukturelles verbundbeschleunigungsglied |
| US8147980B2 (en) | 2006-11-01 | 2012-04-03 | Aia Engineering, Ltd. | Wear-resistant metal matrix ceramic composite parts and methods of manufacturing thereof |
| DE102007000835A1 (de) * | 2007-10-09 | 2009-04-16 | Hazemag & Epr Gmbh | Brechwerkzeug für eine Brechvorrichtung |
| DE102010013999A1 (de) | 2010-04-07 | 2011-10-13 | Vautid Gmbh | Verfahren zur Herstellung eines zumindest bereichsweise einen erhöhten Verschleißschutz aufweisenden Gusswerkstücks |
| DE102010022492A1 (de) | 2010-06-02 | 2011-12-08 | Stahlwerke Bochum Gmbh | Werkzeugeinsatz für eine Vorrichtung zum Zerkleinern von stückigem Material und mit einem solchen Einsatz ausgestattete Vorrichtung |
| DE102011113104B4 (de) * | 2011-09-09 | 2018-04-26 | Vautid Gmbh | Verschleißbauteil |
| DE102011085520B4 (de) | 2011-10-31 | 2017-05-04 | General Electric Technology Gmbh | Hammer einer Schlägermühle |
| CN102909113B (zh) * | 2012-10-17 | 2015-07-01 | 株洲湘军硬质合金有限公司 | 一种破碎机用复合板锤的及其制作方法 |
| CN105107576B (zh) * | 2015-09-18 | 2017-10-20 | 中建材(合肥)水泥通用设备科技有限公司 | 一种反击式破碎机板锤及其制造方法 |
| DE102017211948B3 (de) * | 2017-07-12 | 2018-03-22 | Thyssenkrupp Ag | Siebsegment mit einem Verschleißschutz sowie Verfahren zum Herstellen eines Siebsegments |
| EP3781319B1 (de) | 2018-04-18 | 2021-12-15 | Stahlwerke Bochum GmbH | Schlagwerkzeug und damit ausgestatteter rotor für eine maschine zur zerkleinerung von metallgegenständen oder gesteinsmaterialien |
| WO2019201437A1 (de) | 2018-04-18 | 2019-10-24 | Stahlwerke Bochum Gmbh | Schlagwerkzeug und damit ausgestatteter rotor für eine maschine zur zerkleinerung von metallgegenständen oder gesteinsmaterialien |
| CN108745508A (zh) * | 2018-07-09 | 2018-11-06 | 徐州鑫华耐磨材料有限公司 | 陶瓷金属复合锤头及其制造方法 |
| ES2980230T3 (es) | 2018-09-20 | 2024-09-30 | Stahlwerke Bochum Gmbh | Tapa protectora y rotor equipado con ella para una máquina para triturar objetos metálicos o materiales rocosos |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2365747C3 (de) * | 1973-07-13 | 1978-06-08 | Verschleiss-Technik Dr.-Ing. Hans Wahl Gmbh & Co, 7302 Ostfildern | Gegossener Schlagkörper |
| SU662261A1 (ru) * | 1977-02-02 | 1979-05-15 | Институт Проблем Литья Ан Украинской Сср | Способ поверхностного легировани отливок |
| DE3315125C1 (de) * | 1983-04-27 | 1984-11-22 | Fried. Krupp Gmbh, 4300 Essen | Verschleissbestaendiger Verbundkoerper und Verfahren zu seiner Herstellung |
| DE3618195A1 (de) * | 1986-05-30 | 1987-12-03 | Werner Schatz | Hammer zum zerkleinern von beton, gestein oder dergleichen |
| JPH01113161A (ja) * | 1987-10-28 | 1989-05-01 | Sumitomo Metal Ind Ltd | 金属−セラミックス複合管体およびその製造方法 |
| JPH01192459A (ja) * | 1988-01-26 | 1989-08-02 | Sumitomo Metal Ind Ltd | 金属−セラミックス複合管体およびその製造方法 |
| DD293754A5 (de) * | 1990-04-25 | 1991-09-12 | Gisag-Ag Giesserei Und Maschinenbau Leipzig,De | Verfahren zur herstellung von partiell verschleissgeschuetzten gussstuecken |
| BE1004573A4 (fr) * | 1990-09-20 | 1992-12-15 | Magotteaux Int | Procede de fabrication d'une piece de fonderie bimetallique et piece d'usure realisee par ce procede. |
-
1995
- 1995-08-03 DE DE19528512A patent/DE19528512C2/de not_active Expired - Fee Related
-
1996
- 1996-07-02 EP EP96924838A patent/EP0841990B1/de not_active Expired - Lifetime
- 1996-07-02 WO PCT/EP1996/002879 patent/WO1997005951A1/de not_active Ceased
- 1996-07-02 AT AT96924838T patent/ATE183669T1/de not_active IP Right Cessation
- 1996-07-02 ES ES96924838T patent/ES2137715T3/es not_active Expired - Lifetime
- 1996-07-02 DE DE59602897T patent/DE59602897D1/de not_active Expired - Lifetime
- 1996-07-02 AU AU65168/96A patent/AU6516896A/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9705951A1 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7513295B2 (en) | 2001-12-04 | 2009-04-07 | Magotteaux International Sa | Cast parts with enhanced wear resistance |
| US7935431B2 (en) | 2001-12-04 | 2011-05-03 | Magotteaux International Sa | Cast parts with enhanced wear resistance |
| US7820299B2 (en) | 2003-08-20 | 2010-10-26 | F.A.R.- Fonderie Acciaierie Roiale-Spa | Method to produce an element subject to wear, and element subject to wear thus obtained |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997005951A1 (de) | 1997-02-20 |
| AU6516896A (en) | 1997-03-05 |
| EP0841990B1 (de) | 1999-08-25 |
| ATE183669T1 (de) | 1999-09-15 |
| DE19528512C2 (de) | 2001-02-22 |
| ES2137715T3 (es) | 1999-12-16 |
| DE19528512A1 (de) | 1997-02-06 |
| DE59602897D1 (de) | 1999-09-30 |
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