GB1088560A - A method of producing shaped products of sintered powders - Google Patents

A method of producing shaped products of sintered powders

Info

Publication number
GB1088560A
GB1088560A GB4236664A GB4236664A GB1088560A GB 1088560 A GB1088560 A GB 1088560A GB 4236664 A GB4236664 A GB 4236664A GB 4236664 A GB4236664 A GB 4236664A GB 1088560 A GB1088560 A GB 1088560A
Authority
GB
United Kingdom
Prior art keywords
graphite
mould
powders
stucco
colloidal
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
GB4236664A
Inventor
Nick George Lirones
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.)
Howe Sound Co
Original Assignee
Howe Sound Co
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 Howe Sound Co filed Critical Howe Sound Co
Priority to GB4236664A priority Critical patent/GB1088560A/en
Publication of GB1088560A publication Critical patent/GB1088560A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods
    • C04B33/326—Burning methods under pressure
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/1208—Containers or coating used therefor
    • B22F3/1216—Container composition
    • 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
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/1208—Containers or coating used therefor
    • B22F3/1258—Container manufacturing
    • B22F3/1275—Container manufacturing by coating a model and eliminating the model before consolidation
    • 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
    • B22F5/007—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of moulds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/32—Burning methods

Abstract

In a method of sintering high melting powders the powder is introduced into a shell mould the inner portion of the wall of which is formed of layers of graphite flour and colloidal graphite alternating with layers of graphite stucco and the remainder of the wall is formed of graphite materials or inorganic-ceramic materials. Suitable powders are of beryllium, tantalum, titanium, zirconium, tungsten, chromium, columbium, molybdenum, nickel, stainless steel and their oxides and metalides. The powder may be introduced into the mould consolidated by impacting the mould before heating in a non-oxidizing atmosphere. The powders may also be introduced into the mould in slips and examples of nickel and stainless steel powders in slips containing colloidal graphite are given. An example of a slip containing silica and colloidal graphite is also given. To release the moulded article the mould is broken away or heated in an oxidizing atmosphere.ALSO:In a method of sintering high melting powders the powder is introduced into a shell mould the inner portion of the wall of which is formed of layers of graphite flour and colloidal graphite alternating with layers of graphite stucco and the remainder of the wall is formed of graphite materials or inorganic ceramic materials. Suitable powders are of beryllium, tantalum, titanium, zirconium, tungsten, chromium, columbium, molybdenum, nickel, stainless steel and their oxides and metallides. The powder may be introduced into the mould consolidated by impacting the mould before heating in a non-oxidizing atmosphere. The powders may also be introduced into the mould in slips and examples of nickel and stainless steel powders in slips contaning colloidal graphite are given. An example of a slip containing silica and colloidal graphite is also given. To release the moulded article the mould is broken away or heated in an oxidizing atmosphere. The mould is made by the investment casting process in which a dispensable pattern, e.g. a wax pattern, is spray or dip coated with a slurry and then coated with stucco as many times as is desired, the slurry containing graphite flour and colloidal graphite and the stucco containing graphite. The outer part of the shell may be built up of dip and stucco coatings of the inorganic-ceramic type
GB4236664A 1964-10-16 1964-10-16 A method of producing shaped products of sintered powders Expired GB1088560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4236664A GB1088560A (en) 1964-10-16 1964-10-16 A method of producing shaped products of sintered powders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4236664A GB1088560A (en) 1964-10-16 1964-10-16 A method of producing shaped products of sintered powders

Publications (1)

Publication Number Publication Date
GB1088560A true GB1088560A (en) 1967-10-25

Family

ID=10424098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4236664A Expired GB1088560A (en) 1964-10-16 1964-10-16 A method of producing shaped products of sintered powders

Country Status (1)

Country Link
GB (1) GB1088560A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094164A1 (en) * 1982-04-28 1983-11-16 Kelsey-Hayes Company Method of consolidating material with a cast pressure transmitter
EP0401187A2 (en) * 1989-06-01 1990-12-05 Abb Stal Ab Method for reconstruction of blades and vanes in steam turbines at existing erosion damages

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094164A1 (en) * 1982-04-28 1983-11-16 Kelsey-Hayes Company Method of consolidating material with a cast pressure transmitter
EP0401187A2 (en) * 1989-06-01 1990-12-05 Abb Stal Ab Method for reconstruction of blades and vanes in steam turbines at existing erosion damages
EP0401187A3 (en) * 1989-06-01 1992-10-07 Abb Stal Ab Method for reconstruction of blades and vanes in steam turbines at existing erosion damages

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