GB647278A - Improvements in or relating to the production of sintered steel - Google Patents

Improvements in or relating to the production of sintered steel

Info

Publication number
GB647278A
GB647278A GB34525/47A GB3452547A GB647278A GB 647278 A GB647278 A GB 647278A GB 34525/47 A GB34525/47 A GB 34525/47A GB 3452547 A GB3452547 A GB 3452547A GB 647278 A GB647278 A GB 647278A
Authority
GB
United Kingdom
Prior art keywords
gas
sintered
pressing
steel
propane
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
GB34525/47A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB647278A publication Critical patent/GB647278A/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
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

In a method of producing sintered steel by pressing bodies of iron powder, the pressed body is gas carburized at 800 DEG -1000 DEG C., the partial pressure of the carburizing gas being variably controlled to adjust the carbon content of the steel, and then sintered at 1050 DEG -1300 DEG C. Iron powder may be pressed at 3 to 4 tons per sq. in., gas carburized by heating to 800 DEG -1000 DEG C. in an atmosphere obtained by the partial combustion of propane or illuminating gas or producer gas, and finally sintered at a higher temperature. The article may be subjected to a second pressing, which may be a hot pressing, at 6-10 tons per sq. in. after carburizing and before sintering. Alloyed iron powders may also be treated. The Specification as open to inspection under Sect. 91 comprises also the use of hydrogen to which propane or CO has been added. This subject-matter does not appear in the Specification as accepted.
GB34525/47A 1946-05-10 1947-12-29 Improvements in or relating to the production of sintered steel Expired GB647278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE647278X 1946-05-10

Publications (1)

Publication Number Publication Date
GB647278A true GB647278A (en) 1950-12-06

Family

ID=20313951

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34525/47A Expired GB647278A (en) 1946-05-10 1947-12-29 Improvements in or relating to the production of sintered steel

Country Status (1)

Country Link
GB (1) GB647278A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028100A (en) * 1973-05-17 1977-06-07 Chrysler Corporation Heat treating atmospheres
US4042385A (en) * 1974-11-09 1977-08-16 Toyo Kogyo Co., Ltd. Sintering method for making a high carbon ferrous sliding element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028100A (en) * 1973-05-17 1977-06-07 Chrysler Corporation Heat treating atmospheres
US4042385A (en) * 1974-11-09 1977-08-16 Toyo Kogyo Co., Ltd. Sintering method for making a high carbon ferrous sliding element

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