EP1214998A2 - Moule de coulée sous pression pour machine de coulée de métaux légers sous pression - Google Patents

Moule de coulée sous pression pour machine de coulée de métaux légers sous pression Download PDF

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Publication number
EP1214998A2
EP1214998A2 EP01126257A EP01126257A EP1214998A2 EP 1214998 A2 EP1214998 A2 EP 1214998A2 EP 01126257 A EP01126257 A EP 01126257A EP 01126257 A EP01126257 A EP 01126257A EP 1214998 A2 EP1214998 A2 EP 1214998A2
Authority
EP
European Patent Office
Prior art keywords
casting
iron
casting mold
tungsten
powder
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
Application number
EP01126257A
Other languages
German (de)
English (en)
Other versions
EP1214998B1 (fr
EP1214998A3 (fr
Inventor
Gerhard Wurst
Ulrich Riethmüller
Johann Wolf
Alfred Unterreitmaier
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1214998A2 publication Critical patent/EP1214998A2/fr
Publication of EP1214998A3 publication Critical patent/EP1214998A3/fr
Application granted granted Critical
Publication of EP1214998B1 publication Critical patent/EP1214998B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2209—Selection of die materials

Definitions

  • the invention relates to a preamble of claim 1 Casting mold for light metal casting machine that is powder metallurgically made of tungsten and / or molybdenum with the addition of lower melting metals is trained.
  • An injection mold is also known from Japanese Patent Laid-Open 05000354 known, in which the mold halves each made of a tungsten sintered metal body are formed with a tungsten content of 85-98% and one respective proportions of molybdenum and iron of 1-5% by weight.
  • DE 40 40 032 A1 describes a method for producing a filler can known for die casting machines, with a through in the filling sleeve Hot isostatic pressing made of a tungsten sintered metal is generated.
  • This is essentially resistant to aluminum melt
  • Coating made of tungsten sintered metal includes molybdenum as a further sintering partner, the tungsten and molybdenum particles alloyed with pure iron during sintering are.
  • a casting mold for a light metal die casting machine as described at the beginning, entirely preferably made of a tungsten and / or molybdenum sintered metal training is disadvantageously cost-intensive and with large molds a considerable weight for the die casting machine.
  • the invention has for its object a generic mold with regard Advantageously further training costs and weight
  • the manufacturing costs of a casting mold are essential lowered and the weight of the mold is significantly reduced.
  • the contouring part in a destructible Molding tray is placed for casting with the iron material.
  • a molded trough made of chamotte gives shape to the machine side Part of the mold designed.
  • the contouring part is made in one piece educated. This applies in particular to a multi-part mold with each mold proportional contouring part.
  • contour-giving part can also be formed in several pieces, wherein in the case of a multi-piece design, several pre-sintered sections by means of finish sintering be connected to one part.
  • this part in a separate, with a half or partial cast model equipped by filling of a tungsten and / or molybdenum powder with the addition of iron pieces and then sintering is generated.
  • the contour giving manufactured in this way Part is finally cohesive with a part with this part connecting iron material added to a mold.
  • a one-piece contouring part in a separate one, equipped with a half or partial cast model Container by filling in a tungsten and / or molybdenum powder with the addition of iron and then hot isostatic pressing.
  • This too Contouring part produced in the aforementioned manner is by casting further developed with an iron material into a one-piece casting mold.
  • a generic mold is thereby achieved that in a machine-side part made of iron material a dimensionally enlarged contour-giving area is formed in the casting mold, on the one by hot isostatic pressing of a tungsten and / or molybdenum powder Part produced separately with iron admixture arranged cohesively becomes.
  • a casting mold 1 for a multi-part casting tool of a light metal casting machine is used to reduce manufacturing costs and reduce weight formed in such a way that the casting contour area 2 of the casting mold 1 as a separate part 3 with an inherently rigid wall 4 by sintering or hot isostatic Pressing a tungsten and / or molybdenum powder with admixture is produced by iron. Furthermore, this is produced by powder metallurgy separate part 3 with a machine-side part 5 of the mold 1 through Pouring the contour-giving part 3 with a part 3 that is integral with it connecting iron material 6 combined to form 1. As from 1 shows the contour-giving, powder metallurgically produced part 3 in a destructible, e.g.
  • the part 3 can also be on the bottom of the molding trough 7 be placed.
  • the material expenditure for a tungsten sintered metal is or a molybdenum sintered material or a tungsten and molybdenum sintered material reduced to a minimum and handling for overmolding with Iron material 6 in the destructible mold pan 7 by a one-piece Advantageously supported training.
  • contour-giving part 3 For a contour-giving part 3 to form a cast part with flat surfaces can the contour-giving part 3 are formed in several pieces, with several pre-sintered Sections 9, 10, 10 'and 11, 11' into one by finish sintering Part 3 are connected. By casting a contour around this contouring part with this cohesively connecting iron material 6, the part 5 of the casting mold 1 on the machine side, FIG. 2.
  • a one-piece contouring part 3 can be powder metallurgically also be made by placing one in a separate, with a half Cast model - core 12 - equipped tub 13 filled with tungsten and / or Sintered molybdenum powder with admixtures of iron powder and / or pieces of iron becomes.
  • a one-piece contouring part 3 is made into one separate, equipped with a half cast model 12, pressure-resistant container 13 'by filling in a tungsten and / or molybdenum powder with the addition of iron and then hot isostatic pressing.
  • Part 15 produced by powder metallurgy according to FIG. 4 can also be used in this way be that in a machine-side made of iron material Part 5 of the casting mold 1 'formed a dimensionally enlarged contour-giving region 14 is on which by hot isostatic pressing of a tungsten and / or Molybdenum powder with iron admixture separately produced part 15 integrally is arranged.
  • the contouring area 14 of the machine-side part 5 spaced a cover 16 associated with the part 5 is firmly connected.
  • the cavity 17 between the cover 16 and the machine-side part 5 is with a tungsten and / or mixed with iron powder Filled with molybdenum powder, the opening 18 provided for this purpose sealed and evacuated at 19. Then part 15 is created separately by hot isostatic pressing at a given temperature and constant Pressure over a predetermined time with the machine-side part 5 cohesively combined with simultaneous sintering of the respective metal powder. After graduation the hot isostatic pressing, the cover 16 is removed and the Casting mold 1 'in the present form arranged in a die casting machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP01126257A 2000-12-14 2001-11-06 Moule de coulée sous pression pour machine de coulée de métaux légers sous pression Expired - Lifetime EP1214998B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10062468 2000-12-14
DE10062468A DE10062468A1 (de) 2000-12-14 2000-12-14 Gießform für Leichtmetall-Gießmaschine

Publications (3)

Publication Number Publication Date
EP1214998A2 true EP1214998A2 (fr) 2002-06-19
EP1214998A3 EP1214998A3 (fr) 2003-12-17
EP1214998B1 EP1214998B1 (fr) 2005-08-31

Family

ID=7667235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01126257A Expired - Lifetime EP1214998B1 (fr) 2000-12-14 2001-11-06 Moule de coulée sous pression pour machine de coulée de métaux légers sous pression

Country Status (3)

Country Link
EP (1) EP1214998B1 (fr)
AT (1) ATE303217T1 (fr)
DE (2) DE10062468A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104942262A (zh) * 2015-07-10 2015-09-30 武汉科技大学 一种功能梯度压铸模及其制造工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723763A1 (de) * 1986-07-21 1988-01-28 Ngk Spark Plug Co Verfahren zur herstellung eines zusammengesetzten koerpers aus einem gesinterten keramischen material und einem metall
DE3738450A1 (de) * 1987-11-12 1989-06-01 Werner Weinmueller Gussform zum druckgiessen
DE19636968A1 (de) * 1996-09-12 1998-03-19 Steinbeis Transferzentrum Arbe Verfahren zur Herstellung von metallischen Prototypen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723763A1 (de) * 1986-07-21 1988-01-28 Ngk Spark Plug Co Verfahren zur herstellung eines zusammengesetzten koerpers aus einem gesinterten keramischen material und einem metall
DE3738450A1 (de) * 1987-11-12 1989-06-01 Werner Weinmueller Gussform zum druckgiessen
DE19636968A1 (de) * 1996-09-12 1998-03-19 Steinbeis Transferzentrum Arbe Verfahren zur Herstellung von metallischen Prototypen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104942262A (zh) * 2015-07-10 2015-09-30 武汉科技大学 一种功能梯度压铸模及其制造工艺
CN104942262B (zh) * 2015-07-10 2017-05-03 武汉科技大学 一种功能梯度压铸模及其制造工艺

Also Published As

Publication number Publication date
ATE303217T1 (de) 2005-09-15
EP1214998B1 (fr) 2005-08-31
EP1214998A3 (fr) 2003-12-17
DE50107270D1 (de) 2005-10-06
DE10062468A1 (de) 2002-06-20

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