GB449753A - Improvements in or relating to the production of wear-resisting metallic articles - Google Patents
Improvements in or relating to the production of wear-resisting metallic articlesInfo
- Publication number
- GB449753A GB449753A GB37002/34A GB3700234A GB449753A GB 449753 A GB449753 A GB 449753A GB 37002/34 A GB37002/34 A GB 37002/34A GB 3700234 A GB3700234 A GB 3700234A GB 449753 A GB449753 A GB 449753A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- hydrogen
- oxide
- metals
- mixed
- 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
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
- C22C1/053—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds
- C22C1/055—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds using carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Powder Metallurgy (AREA)
Abstract
Wear-resisting articles for use as tools, dies, sand blast nozzles, contact points, well borers, and for other purposes, are made by alloying one or more carbide-forming metals such as tungsten, tantalum, titanium, zirconium, molybdenum, chromium, thorium, and rhenium, with one or more metals of lower melting point such as iron, manganese, nickel, cobalt, silver, and copper, carburizing or carburizing and boronizing the alloy so formed, powdering the product, mixing powdered metallic bonding material therewith, and bonding the constituents by heat-treatment. The bonding material may be an iron-group metal which may be mixed as oxide with the powdered alloy, the oxide being subsequently reduced. A preferred composition is a carburized or carburized and boronized alloy of tungsten and one or more iron-group metals bonded as described. Alloys of refractory metals and the other metals referred to are powdered and heated with carbon or carbon and boron; the products are finely powdered and mixed with oxides of iron &c. heated in hydrogen, pressed to shape, and further highly heated, with or without pressure, in a carbonaceous, hydrogen, or reducing atmosphere. In making the alloys, compounds such as cobalt oxide, iron oxide, and thorium nitrate, or cobalt tungstate, iron tungstate, and tungsten oxide may be used, the mixed powders being reduced in hydrogen. The carburizing may be effected by mixing the alloy powders with lamp black and heating to about 950 DEG C. in hydrogen, crushing and milling the product and reheating to about 1250 DEG C. in a carbonaceous, hydrogen, or reducing atmosphere. If boronizing is to be effected, boron suboxide or boron nitrate is used along with the lamp black. The product is powdered and mixed with bonding material such as cobalt oxide and reduced in hydrogen at about 350 DEG C. It is afterwards shaped by pressure in moulds or by being mixed with an organic binder such as starch paste, gum arabic, caramel, or casein solution and extruded, the pieces being baked and then highly heated. The final product may contain 57,5-92,5 per cent of refractory metals, 0,25-5 per cent of iron, 0,25-2,5 per cent of chromium and thorium, 5-10 per cent of carbon and boron, and 2-25 per cent of cobalt and nickel. Specification 449,847 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US449753XA | 1934-09-10 | 1934-09-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB449753A true GB449753A (en) | 1936-06-24 |
Family
ID=21935332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37002/34A Expired GB449753A (en) | 1934-09-10 | 1934-12-24 | Improvements in or relating to the production of wear-resisting metallic articles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB449753A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5939664A (en) * | 1997-06-11 | 1999-08-17 | The United States Of America As Represented By The Secretary Of The Army | Heat treatable tungsten alloys with improved ballistic performance and method of making the same |
GB2344830A (en) * | 1998-12-16 | 2000-06-21 | Smith International | Boronized wear-resistant materials |
CN112962019A (en) * | 2021-02-03 | 2021-06-15 | 河南科技大学 | High-wear-resistance steel-based composite material and preparation method thereof |
CN113897607A (en) * | 2021-09-18 | 2022-01-07 | 安徽昱工激光技术有限公司 | Laser cladding process for wear-resisting plate and auxiliary equipment thereof |
-
1934
- 1934-12-24 GB GB37002/34A patent/GB449753A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5939664A (en) * | 1997-06-11 | 1999-08-17 | The United States Of America As Represented By The Secretary Of The Army | Heat treatable tungsten alloys with improved ballistic performance and method of making the same |
US5989494A (en) * | 1997-06-11 | 1999-11-23 | The United States Of America As Represented By The Secretary Of The Army | Heat treatable tungsten alloys with improved ballistic performance and method of making the same |
GB2344830A (en) * | 1998-12-16 | 2000-06-21 | Smith International | Boronized wear-resistant materials |
GB2344830B (en) * | 1998-12-16 | 2003-10-22 | Smith International | Boron-containing composite bodies |
CN112962019A (en) * | 2021-02-03 | 2021-06-15 | 河南科技大学 | High-wear-resistance steel-based composite material and preparation method thereof |
CN112962019B (en) * | 2021-02-03 | 2022-03-04 | 河南科技大学 | High-wear-resistance steel-based composite material and preparation method thereof |
CN113897607A (en) * | 2021-09-18 | 2022-01-07 | 安徽昱工激光技术有限公司 | Laser cladding process for wear-resisting plate and auxiliary equipment thereof |
CN113897607B (en) * | 2021-09-18 | 2023-10-31 | 安徽昱工激光技术有限公司 | Laser cladding process for wear-resistant plate and auxiliary equipment thereof |
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