EP0480171A3 - Dust-free investment material for precision casting and process for the preparation of such investment materials - Google Patents

Dust-free investment material for precision casting and process for the preparation of such investment materials Download PDF

Info

Publication number
EP0480171A3
EP0480171A3 EP19910114886 EP91114886A EP0480171A3 EP 0480171 A3 EP0480171 A3 EP 0480171A3 EP 19910114886 EP19910114886 EP 19910114886 EP 91114886 A EP91114886 A EP 91114886A EP 0480171 A3 EP0480171 A3 EP 0480171A3
Authority
EP
European Patent Office
Prior art keywords
investment
dust
silicon dioxide
preparation
free
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
EP19910114886
Other languages
German (de)
Other versions
EP0480171B1 (en
EP0480171A2 (en
Inventor
Gerlinde Dipl.-Ing. Gantert
Bernd Dr. Dipl.-Ing. Kempf
Klaus-Peter Dr. Dipl.-Chem. Gundlach
Ulrich Dr Dipl.-Phys. Kump
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
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 Degussa GmbH filed Critical Degussa GmbH
Publication of EP0480171A2 publication Critical patent/EP0480171A2/en
Publication of EP0480171A3 publication Critical patent/EP0480171A3/en
Application granted granted Critical
Publication of EP0480171B1 publication Critical patent/EP0480171B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • B22C1/08—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives for decreasing shrinkage of the mould, e.g. for investment casting

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Dental Preparations (AREA)
  • Dental Prosthetics (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Silicon Compounds (AREA)
  • Noodles (AREA)

Abstract

Dust-free investment materials for producing precision castings consisting of water-soluble phosphates, magnesium oxide and silicon dioxide are obtained when the investment material is divided into two components a and b, where component a contains all the magnesium oxide, where appropriate a part of the silicon dioxide and, if silicon dioxide is present, 0.4 to 6% by weight of a hydrophilic organic solvent, and component b contains the phosphate, the remainder of the silicon dioxide and at least 0.5% by weight of water.
EP91114886A 1990-10-11 1991-09-04 Dust-free investment material for precision casting and process for the preparation of such investment materials Expired - Lifetime EP0480171B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032254A DE4032254C2 (en) 1990-10-11 1990-10-11 Dust-free investment material for precisely fitting castings and processes for producing these investment materials
DE4032254 1990-10-11

Publications (3)

Publication Number Publication Date
EP0480171A2 EP0480171A2 (en) 1992-04-15
EP0480171A3 true EP0480171A3 (en) 1993-01-20
EP0480171B1 EP0480171B1 (en) 1994-07-20

Family

ID=6416069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114886A Expired - Lifetime EP0480171B1 (en) 1990-10-11 1991-09-04 Dust-free investment material for precision casting and process for the preparation of such investment materials

Country Status (13)

Country Link
US (1) US5250110A (en)
EP (1) EP0480171B1 (en)
JP (1) JP3242680B2 (en)
AT (1) ATE108642T1 (en)
AU (1) AU651137B2 (en)
BR (1) BR9104393A (en)
CA (1) CA2053138A1 (en)
DE (2) DE4032254C2 (en)
DK (1) DK0480171T3 (en)
ES (1) ES2059004T3 (en)
IL (1) IL99711A (en)
MX (1) MX9101480A (en)
ZA (1) ZA918090B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3529523B2 (en) * 1995-11-17 2004-05-24 株式会社ジーシー Dental phosphate investment composition
DE102006012630B4 (en) * 2006-03-20 2010-04-08 Amann Girrbach Ag Dosing device for mixing at least one powdery substance with at least one liquid substance
US9764057B2 (en) * 2007-06-06 2017-09-19 Innotere Gmbh Hydraulic cement-based implant material and use thereof
DE502007002510D1 (en) * 2007-11-02 2010-02-11 Shera Werkstofftechnologie Gmb Ceramic investment material for the production of a casting mold and associated production methods
CA2885237A1 (en) * 2012-10-18 2014-04-24 Cermatco Ltd Investment binder and use of the investment binder
GB2569193B (en) 2017-12-11 2021-09-29 Dudley Shaw Richard Investment casting compositions
KR102285589B1 (en) * 2019-10-22 2021-08-04 시노베스트 주식회사 Dental casting investment for hardening expansion type

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707853A1 (en) * 1986-03-12 1987-10-22 G C Dental Ind Corp POWDERED DENTAL IMPRESSION PREPARATION WITH LOW DUST

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479504A (en) * 1943-07-12 1949-08-16 Ransom & Randolph Company Investment material
US2466138A (en) * 1944-09-20 1949-04-05 Nat Lead Co Refractory mold composition
US2875073A (en) * 1955-05-23 1959-02-24 Corn Prod Refining Co Core binder and process of making cores
US3074803A (en) * 1960-09-27 1963-01-22 Nat Starch Chem Corp Molding starch composition
US3081177A (en) * 1962-01-25 1963-03-12 J Bird Moyer Co Inc Dental impression compositions
JPS58199639A (en) * 1982-05-17 1983-11-21 Tokuyama Soda Co Ltd Molding material
JPS63141906A (en) * 1986-12-03 1988-06-14 G C Dental Ind Corp Embedding material for dental molding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707853A1 (en) * 1986-03-12 1987-10-22 G C Dental Ind Corp POWDERED DENTAL IMPRESSION PREPARATION WITH LOW DUST

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Section Ch, Week 8401, Derwent Publications Ltd., London, GB; Class E17, AN 84-03437 & JP-58 199 639 (TOKUYAMA SODA) 21. November 1983 *

Also Published As

Publication number Publication date
JP3242680B2 (en) 2001-12-25
ZA918090B (en) 1992-07-29
ATE108642T1 (en) 1994-08-15
CA2053138A1 (en) 1992-04-12
BR9104393A (en) 1992-06-09
AU651137B2 (en) 1994-07-14
ES2059004T3 (en) 1994-11-01
DK0480171T3 (en) 1994-10-17
US5250110A (en) 1993-10-05
DE59102243D1 (en) 1994-08-25
DE4032254A1 (en) 1992-04-16
AU8574491A (en) 1992-05-07
EP0480171B1 (en) 1994-07-20
JPH0558834A (en) 1993-03-09
IL99711A (en) 1995-11-27
IL99711A0 (en) 1992-08-18
DE4032254C2 (en) 1994-04-21
EP0480171A2 (en) 1992-04-15
MX9101480A (en) 1992-04-01

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