US3578065A - Mandrel holder for horizontal pipe casting apparatus - Google Patents

Mandrel holder for horizontal pipe casting apparatus Download PDF

Info

Publication number
US3578065A
US3578065A US853896A US3578065DA US3578065A US 3578065 A US3578065 A US 3578065A US 853896 A US853896 A US 853896A US 3578065D A US3578065D A US 3578065DA US 3578065 A US3578065 A US 3578065A
Authority
US
United States
Prior art keywords
mandrel
holder
bottom wall
pipe casting
crucible
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.)
Expired - Lifetime
Application number
US853896A
Other languages
English (en)
Inventor
Reinhold Langer
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.)
KM Kabelmetal AG
Original Assignee
KM Kabelmetal AG
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 KM Kabelmetal AG filed Critical KM Kabelmetal AG
Application granted granted Critical
Publication of US3578065A publication Critical patent/US3578065A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • B22D11/047—Means for joining tundish to mould

Definitions

  • Known horizontal pipe casting installations include a pouring funnel or crucible for receiving molten metal and at the bottom thereof has an opening communicating with the usual, horizontally extending tube mold.
  • the mandrel associated with such tube mold must be suitably mounted and centered.
  • the opposed vertical wall portions of the crucible are formed with aligned openings to receive opposite end portions of the mandrel.
  • the forward end of the mandrel projecting into the tube mold is in cantilevered relation thereto, since the rear end of the mandrel is fixed in one wall opening while the other wall opening provides an annular clearance for passing the molten metal therethrough.
  • the mandrel is mounted in a single outlet opening in the crucible wall. While this arrangement improves the centering of the mandrel; the mandrel mounting means necessarily subdivides the outlet opening through which the molten metal moves and adversely affects the cooling operation by reason of irregularities in the metal flow.
  • an object of this invention is to provide an improved mandrel holder which is to be mounted in the single outlet opening of a crucible; the holder being of a structure and disposition relative to the crucible to insure uniform flow of molten metal toward the tube mold at uniform temperature.
  • Another object of this invention is to provide a mandrel holder of the character described, which comprises a cupshaped member which projects into the interior of the crucible; the bottom wall of the member having an opening for receiving the rear end of the mandrel so as to accurately center the same in respect to the tube mold extending from the outlet opening of the crucible.
  • a further object of this invention is to provide a mandrel holder of the character described; wherein the holder has passages for passing the molten metal, which are so located and positioned to provide optimum thermal transfer conditions for the molten metal, and minimal temperature drops at the tube or pipe forming position.
  • Yet another object of this invention is to provide an improved mandrel holder of the character described, which lends itself to economical production procedures and close tolerances to insure precision fitting relative to the crucible.
  • Still a further object of this invention is to provide an improved mandrel holder of the character described, which includes improved means for rapidly assembling the holder with the crucible in tightly fitting relation to each other and in precise coaxial alignment.
  • Yet a further object of this invention is to provide an improved mandrel holder of the character described which may be used with mandrels formed of material having poor heat conducting properties, such as ceramics or the like; or mandrels having a tapering cross section at the forward end thereof with an axial bore, to thereby increase heat resistance in the axial direction.
  • FIGURE is a longitudinal side elevational view in section, showing a mandrel holder embodying the invention, in association with a crucible, mandrel and tube mold.
  • a pipe casting apparatus of the horizontally type is generally indicated at 10.
  • the same includes a crucible II for receiving the molten metal which is to be continuously cast into pipe.
  • the crucible 11 comprises a forward sidewall portion 12 which is formed at its lower end with an outlet opening 13, with an annular shoulder portion 13A on the inner side thereof.
  • An annular sealing ring 14 of graphite or the like, is frxedin outlet opening 13.
  • the novel mandrel holder of the instant invention is generally indicated at 15 and is of cup shape.
  • the holder 15 comprises a sidewall portion 16 with an outwardly extending radial flange 17 at the outer end thereof and a thickened bottom wall 18.
  • the bottom wall 18 is formed with an opening 19 to mount therein the rear end portion of a mandrel member generally indicated at 20.
  • the mandrel 20 includes a rear portion 21 of uniform diameter and a forwardly extending portion 22 of tapering cross section; said mandrel portion 22 being formed with an enlarged axial recess 23.
  • the rear portion 21 of member 20 includes a flange 24 for abutting the marginal wall portion of holder 15 at opening 19 thereof when said mandrel 20 is assembled with holder 15.
  • the mandrel 20 is locked to holder 15 by way of radial pins 25 receivable in bayonet slots 26 formed in bottom wall 18 of holder 15. This makes for rapid assembly of mandrel 20 with holder 15 and precise coaxial relation therebetween.
  • the bottom wall 18 of holder 15 is formed at its juncture with sidewall 16, with a series of passages 27 to allow passage of molten metal in crucible 11 to the enlarged annular space 28 between holder wall 16 and mandrel portion 21.
  • the molten metal then flows to an annular passage 29 of reduced cross section located between mandrel portion 22 and an annular graphite member 30 and thence to an annular passage 32 between the usual tube mold 31 and the end portion of mandrel portion 22.
  • the metal is converted to pipe form with a uniformity of temperature in the annular passages 28, 29 and 32, as well as the interior of crucible 11; since the mandrel 20 and holder 15 project into the interior of said crucible.
  • passages 27 in holder 15 is such as to equalize the rates of metal flow into passage 28 despite variations in pressure within crucible 11.
  • mandrel 20 will assume relatively high melt temperatures by way of holder 15.
  • mandrel 20 has a relatively low heat transfer by reason of the recess 23; or alternatively, the mandrel is formed of a low heat conductive material such as ceramics or the like.
  • a crucible for holding molten metal and having an outlet in a sidewall portion thereof, a tube mold extending horizontally from said outlet, and a mandrel extending within said mold; the improvement comprising a mandrel holder for maintaining said mandrel in coaxial relation to said mold, said holder being mounted in said outlet and comprising a cup-shaped member having a cylindrical sidewall and a bottom wall, said bottom wall being disposed interiorly of said crucible and formed with an opening, said mandrel having a rear portion mounted in the opening in said-bottom wall of the holder, and passages in wall portions of said holder for connecting the interior of said crucible with the annular space between said mandrel and said tube mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
US853896A 1968-08-31 1969-08-28 Mandrel holder for horizontal pipe casting apparatus Expired - Lifetime US3578065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681758902 DE1758902A1 (de) 1968-08-31 1968-08-31 Dornhalter fuer Stranggussanlagen zum horizontalen Giessen von Rohren

Publications (1)

Publication Number Publication Date
US3578065A true US3578065A (en) 1971-05-11

Family

ID=5695282

Family Applications (1)

Application Number Title Priority Date Filing Date
US853896A Expired - Lifetime US3578065A (en) 1968-08-31 1969-08-28 Mandrel holder for horizontal pipe casting apparatus

Country Status (3)

Country Link
US (1) US3578065A (de)
CH (1) CH495185A (de)
DE (1) DE1758902A1 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736979A (en) * 1970-01-30 1973-06-05 Technica Guss Gmbh Die for tube profiles
US4000773A (en) * 1976-02-09 1977-01-04 Gus Sevastakis Die assembly for continuous vertical casting of tubular metallic products
US4154291A (en) * 1977-10-17 1979-05-15 Western Reserve Manufacturing Co., Inc. Mandrel for continuous casting of tubular metallic members
US4244420A (en) * 1978-05-17 1981-01-13 Davy-Loewy Limited Apparatus for feeding a horizontal continuous casting mold
US4295516A (en) * 1978-11-08 1981-10-20 Timex Corporation Symmetrical horizontal continuous casting
US4308908A (en) * 1980-01-15 1982-01-05 Gus Sevastakis Methods and apparatus for effecting quick mandrel changes in continuous casting operations
WO2001064372A1 (en) * 2000-03-03 2001-09-07 S.I.T.A.I. S.P.A. Societa' Italiana Tubi Acciaio Inossidabile Process for the production of industrial tubes or section bars from metal and related apparatus
CN103736938A (zh) * 2013-12-31 2014-04-23 安徽中鼎金亚汽车管件制造有限公司 一种钢管成型模具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055701A1 (de) 2006-11-23 2008-05-29 Niclas Grunewald Dachentwässerung für Lastkraftwagen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1975737A (en) * 1931-12-23 1934-10-02 Mij Tot Beheer En Exploitatie Prevention of air bubbles in glass
US2277375A (en) * 1936-08-19 1942-03-24 Ajax Metal Company Continuous casting of metal tubes
GB657788A (en) * 1946-07-02 1951-09-26 American Smelting Refining Continuously casting hollow metal shapes
GB869104A (en) * 1955-08-09 1961-05-31 Electro Chimie Metal Horizontal casting of metals
US3340924A (en) * 1964-09-10 1967-09-12 Kennecott Copper Corp Apparatus for continuous casting of hollow billets
US3375863A (en) * 1966-03-16 1968-04-02 Anaconda American Brass Co Apparatus for continuous casting metal tubes
US3409068A (en) * 1965-07-01 1968-11-05 Phelps Dodge Copper Prod Method of continuously casting tubes using a rotating mandrel
US3478814A (en) * 1966-06-24 1969-11-18 Ugine Kuhlmann Continuous pouring of metals

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1975737A (en) * 1931-12-23 1934-10-02 Mij Tot Beheer En Exploitatie Prevention of air bubbles in glass
US2277375A (en) * 1936-08-19 1942-03-24 Ajax Metal Company Continuous casting of metal tubes
GB657788A (en) * 1946-07-02 1951-09-26 American Smelting Refining Continuously casting hollow metal shapes
GB869104A (en) * 1955-08-09 1961-05-31 Electro Chimie Metal Horizontal casting of metals
US3340924A (en) * 1964-09-10 1967-09-12 Kennecott Copper Corp Apparatus for continuous casting of hollow billets
US3409068A (en) * 1965-07-01 1968-11-05 Phelps Dodge Copper Prod Method of continuously casting tubes using a rotating mandrel
US3375863A (en) * 1966-03-16 1968-04-02 Anaconda American Brass Co Apparatus for continuous casting metal tubes
US3478814A (en) * 1966-06-24 1969-11-18 Ugine Kuhlmann Continuous pouring of metals

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736979A (en) * 1970-01-30 1973-06-05 Technica Guss Gmbh Die for tube profiles
US4000773A (en) * 1976-02-09 1977-01-04 Gus Sevastakis Die assembly for continuous vertical casting of tubular metallic products
US4154291A (en) * 1977-10-17 1979-05-15 Western Reserve Manufacturing Co., Inc. Mandrel for continuous casting of tubular metallic members
US4244420A (en) * 1978-05-17 1981-01-13 Davy-Loewy Limited Apparatus for feeding a horizontal continuous casting mold
US4295516A (en) * 1978-11-08 1981-10-20 Timex Corporation Symmetrical horizontal continuous casting
US4308908A (en) * 1980-01-15 1982-01-05 Gus Sevastakis Methods and apparatus for effecting quick mandrel changes in continuous casting operations
WO2001064372A1 (en) * 2000-03-03 2001-09-07 S.I.T.A.I. S.P.A. Societa' Italiana Tubi Acciaio Inossidabile Process for the production of industrial tubes or section bars from metal and related apparatus
US20030029598A1 (en) * 2000-03-03 2003-02-13 Carlo Colombo Process for the production of industrial tubes or section bars from metal and related apparatus
US6729381B2 (en) * 2000-03-03 2004-05-04 Societa' Italiana Tubi Acciaio Inossidabile (S.I.T.A.I.) S.P.A. Process for the production of industrial tubes or section bars from metal and related apparatus
CN103736938A (zh) * 2013-12-31 2014-04-23 安徽中鼎金亚汽车管件制造有限公司 一种钢管成型模具
CN103736938B (zh) * 2013-12-31 2016-08-24 安徽中鼎金亚汽车管件制造有限公司 一种钢管成型模具

Also Published As

Publication number Publication date
CH495185A (de) 1970-08-31
DE1758902A1 (de) 1971-04-01

Similar Documents

Publication Publication Date Title
US3578065A (en) Mandrel holder for horizontal pipe casting apparatus
US3735010A (en) Skull-melting crucible
US3752218A (en) Continuous casting moulds
GB853853A (en) Continuous casting
US3342252A (en) Mandrel for continuous casting mold
US3710840A (en) Method for continuous casting of hollow bar
US3363669A (en) Arrangement for controlling cooling in continuous casting of metals
CN218744746U (zh) 一种下引法铸造高电率铜锭的冷却装置
FI77391B (fi) Anordning foer straenggjutning av metaller.
US3331430A (en) Continuous casting apparatus for casting hollow billets
US4000773A (en) Die assembly for continuous vertical casting of tubular metallic products
US3375863A (en) Apparatus for continuous casting metal tubes
US3554270A (en) Metal casing apparatus and method
US3885617A (en) DC casting mold assembly
US3734166A (en) Apparatus for continuously casting tubes
US2306164A (en) Extrusion device
CN217858705U (zh) 一种金属铸造用结晶器
US3736979A (en) Die for tube profiles
US3137904A (en) Sprue bushing mounting for die casting machines
JPS56109150A (en) Cold chamber type die casting machine
US3284860A (en) Pouring trough for centrifugal casting machine
US2874424A (en) Pouring spout assembly and mounting arrangement
US3486550A (en) Continuous casting of tubes
US3678990A (en) Apparatus for continuous casting of hollow bar
US3398780A (en) Continuous casting of tubes