GB412099A - Improvements in or relating to the manufacture of sintered hard alloys - Google Patents

Improvements in or relating to the manufacture of sintered hard alloys

Info

Publication number
GB412099A
GB412099A GB30834/33A GB3083433A GB412099A GB 412099 A GB412099 A GB 412099A GB 30834/33 A GB30834/33 A GB 30834/33A GB 3083433 A GB3083433 A GB 3083433A GB 412099 A GB412099 A GB 412099A
Authority
GB
United Kingdom
Prior art keywords
mixture
sintering
hard alloys
vacuum
borides
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
GB30834/33A
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.)
WOLFRAM AND MOLYBDAEN AG
Original Assignee
WOLFRAM AND MOLYBDAEN 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 WOLFRAM AND MOLYBDAEN AG filed Critical WOLFRAM AND MOLYBDAEN AG
Publication of GB412099A publication Critical patent/GB412099A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

Iron, nickel, or cobalt borides are prepared by mixing amorphous boron and the metal in stoichiometric proportions and sintering the mixtures in a vacuum at 800--1300 DEG C.ALSO:Sintered hard alloys are produced from a powdered mixture comprising tungsten carbide and up to 25 per cent of a boride of iron nickel or cobalt, the mixture being sintered at a high temperature, e.g. 1350-1400 DEG C. for the time mecessary for the production of the alloy. The mixture may be shaped under pressure, preferably at a high temperature, e.g. 1400 DEG C., and the sintering may be carried out in an atmosphere of hydrogen. The borides are produced by mixing amorphous boron and the metal in stoichometric proportions and sintering the mixture in a vacuum at 800-1300 DEG C. The Specification as open to inspection under Sect. 91 states that up to 30 per cent of the tungsten carbide may be replaced by titanium, tantalum, niobium, vanadium, zirconium, hafnium or molybdenum carbides. This subject-matter does not appear in the Specification as accepted.
GB30834/33A 1932-11-24 1933-11-06 Improvements in or relating to the manufacture of sintered hard alloys Expired GB412099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH412099X 1932-11-24

Publications (1)

Publication Number Publication Date
GB412099A true GB412099A (en) 1934-06-21

Family

ID=4514470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30834/33A Expired GB412099A (en) 1932-11-24 1933-11-06 Improvements in or relating to the manufacture of sintered hard alloys

Country Status (1)

Country Link
GB (1) GB412099A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968986C (en) * 1951-09-19 1958-04-17 Deutsche Edelstahlwerke Ag Welding rod
DE972437C (en) * 1951-09-19 1959-07-23 Deutsche Edelstahlwerke Ag Powder mixture for applying hard metal to carrier materials and processing methods
DE973182C (en) * 1952-04-04 1959-12-17 Deutsche Edelstahlwerke Ag Use of a powder mixture according to patent 972437 as a means for applying hard metal to saw blades for working stone and a method for producing such saw blades
CN115572877A (en) * 2022-10-08 2023-01-06 郑州大学 Preparation method of molybdenum niobium or molybdenum tantalum alloy

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968986C (en) * 1951-09-19 1958-04-17 Deutsche Edelstahlwerke Ag Welding rod
DE972437C (en) * 1951-09-19 1959-07-23 Deutsche Edelstahlwerke Ag Powder mixture for applying hard metal to carrier materials and processing methods
DE973182C (en) * 1952-04-04 1959-12-17 Deutsche Edelstahlwerke Ag Use of a powder mixture according to patent 972437 as a means for applying hard metal to saw blades for working stone and a method for producing such saw blades
CN115572877A (en) * 2022-10-08 2023-01-06 郑州大学 Preparation method of molybdenum niobium or molybdenum tantalum alloy
CN115572877B (en) * 2022-10-08 2023-06-09 郑州大学 Preparation method of molybdenum-niobium or molybdenum-tantalum alloy

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