GB872714A - Improvements in sintering process - Google Patents

Improvements in sintering process

Info

Publication number
GB872714A
GB872714A GB4139858A GB4139858A GB872714A GB 872714 A GB872714 A GB 872714A GB 4139858 A GB4139858 A GB 4139858A GB 4139858 A GB4139858 A GB 4139858A GB 872714 A GB872714 A GB 872714A
Authority
GB
United Kingdom
Prior art keywords
mould
core
sintering
powder
beryllia
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
Application number
GB4139858A
Inventor
Ronald Andrew Knight
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB4139858A priority Critical patent/GB872714A/en
Publication of GB872714A publication Critical patent/GB872714A/en
Expired legal-status Critical Current

Links

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
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • B22F5/106—Tube or ring forms
    • 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
    • B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

Uncompacted sinterable powders such as beryllium are sintered in the uncompacted state in a mould which has a core, such as copper, which has a melting point above the presintering temperature and below the sintering temperature of the powder, the powder being presintered until the mass is self supporting the temperatures then being raised to sintering temperature and the molten core removed from the mould. The beryllium powder is loosely packed under argon into a graphite mould dressed with an alumina or beryllia coating and the copper tube forming the core is coated with graphite and alumina or beryllia. Presintering is effected at 930 DEG C. to 1030 DEG C. and sintering at 1100 DEG C. to 1275 DEG C., both under vacuum. During sintering the core flows out of the mould and free contraction takes place during sintering. Specification 840,857 is referred to.
GB4139858A 1958-12-22 1958-12-22 Improvements in sintering process Expired GB872714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4139858A GB872714A (en) 1958-12-22 1958-12-22 Improvements in sintering process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4139858A GB872714A (en) 1958-12-22 1958-12-22 Improvements in sintering process

Publications (1)

Publication Number Publication Date
GB872714A true GB872714A (en) 1961-07-12

Family

ID=10419514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4139858A Expired GB872714A (en) 1958-12-22 1958-12-22 Improvements in sintering process

Country Status (1)

Country Link
GB (1) GB872714A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002011930A1 (en) * 2000-08-10 2002-02-14 Atmostat Etudes Et Recherches Heat-exchanging device
EP3210693A1 (en) * 2016-02-29 2017-08-30 General Electric Company Casting with a second metal component formed around a first metal component using hot isostatic pressing
CN115627364A (en) * 2022-10-20 2023-01-20 广东先导微电子科技有限公司 Preparation method of high-purity beryllium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002011930A1 (en) * 2000-08-10 2002-02-14 Atmostat Etudes Et Recherches Heat-exchanging device
EP3210693A1 (en) * 2016-02-29 2017-08-30 General Electric Company Casting with a second metal component formed around a first metal component using hot isostatic pressing
CN107127346A (en) * 2016-02-29 2017-09-05 通用电气公司 The casting of the second hardware is formed around the first hardware using high temperature insostatic pressing (HIP)
US10343218B2 (en) 2016-02-29 2019-07-09 General Electric Company Casting with a second metal component formed around a first metal component using hot isostactic pressing
CN115627364A (en) * 2022-10-20 2023-01-20 广东先导微电子科技有限公司 Preparation method of high-purity beryllium

Similar Documents

Publication Publication Date Title
GB1063543A (en) Method of forming thin-walled cast iron parts
IE36709L (en) Making investment shell moulds
US3023119A (en) Coated mold for casting plutonium
GB872714A (en) Improvements in sintering process
GR76907B (en)
US3039000A (en) Radiation shield structures and their production
SE7901653L (en) MELTING PHASE INTRODUCED COMPOSITE AND PROCEDURE FOR MANUFACTURE OF THE SAME
GB1051449A (en)
CH612408A5 (en) Process for the manufacture of a coherent material from an inorganic powder containing a metal oxide
GB745037A (en) Improvements in and relating to crucibles, casting moulds, and linings therefor
GB990620A (en) A friction body of sintered friction material
US3112165A (en) Metal fabrication
GB824124A (en) Metal-ceramic materials
GB1088560A (en) A method of producing shaped products of sintered powders
ES449722A1 (en) Continuous casting method and turndish
JPS55113803A (en) Production of magnetic material
JPS5426207A (en) Preparation of sintered product
GB874129A (en) Improvements in or relating to the production of hollow bodies from metal powder
ES261129A1 (en) Apparatus for vacuum melting and casting metals
GB1012058A (en) Improvements in or relating to the manufacture of optical elements of zinc oxide
Pieczonka et al. Sintered Phosphor-Steels From Iron Powder Made of Rolling Scale
RUF ISOSTATIC PRESSING. FUTURE APPLICATIONS. PT. 2
JPS5370012A (en) Heat-resisting sintered structure
CA530607A (en) Powder metallurgical method of shaping articles from high melting metals
LISAGOR et al. Coated refractory metals for high-temperature structural components(Tensile properties of protectively coated refractory metals for structural components in high temperature oxidizing environments)