GB659665A - Method of making metal bodies from metal powder - Google Patents

Method of making metal bodies from metal powder

Info

Publication number
GB659665A
GB659665A GB1745549A GB1745549A GB659665A GB 659665 A GB659665 A GB 659665A GB 1745549 A GB1745549 A GB 1745549A GB 1745549 A GB1745549 A GB 1745549A GB 659665 A GB659665 A GB 659665A
Authority
GB
United Kingdom
Prior art keywords
per cent
powder
square inch
carbon
per square
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
GB1745549A
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.)
Isthmian Metals Inc
Original Assignee
Isthmian Metals Inc
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 Isthmian Metals Inc filed Critical Isthmian Metals Inc
Priority to GB1745549A priority Critical patent/GB659665A/en
Publication of GB659665A publication Critical patent/GB659665A/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
    • C22C33/0235—Starting from compounds, e.g. oxides

Landscapes

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

Abstract

659,665. Powder metallurgy. CLARK, D. M. (Isthmian Metals, Inc.). July 1, 1949, No. 17455. [Class 83 (iv)] In a method of making a soft iron body free from oxides, iron powder containing absorbed oxygen is mixed with carbon powder, pressed at not more than 40 tons per square inch and then sintered and cooled in a non- oxidizing atmosphere, the amount of added carbon being such as to leave not more than 0.4 per cent in the final body. The sintering takes place at between 1800‹ to 2050‹ F. after which the body may be repressed at between 60-90 tons per square inch. Manganese may be present in an amount not exceeding 0.9 per cent. As an example, electrolytic iron powder containing 0.6-0.8 per cent oxygen was mixed with 0.5-0.9 per cent manganese powder, 0.3 per cent powdered graphite and 1 per cent stearic acid or other lubricant. The mixture was pressed at 15-40 tons per square inch and sintered in hydrogen at 2000 ‹ F. for about three hours, the remaining carbon not exceeding 0.1 per cent. The body was then repressed at 75 tons per square inch, the final density being 7.65. It is stated that there is no need to use as much carbon as that required for chemical combination with all the absorbed oxygen in the powder.
GB1745549A 1949-07-01 1949-07-01 Method of making metal bodies from metal powder Expired GB659665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1745549A GB659665A (en) 1949-07-01 1949-07-01 Method of making metal bodies from metal powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1745549A GB659665A (en) 1949-07-01 1949-07-01 Method of making metal bodies from metal powder

Publications (1)

Publication Number Publication Date
GB659665A true GB659665A (en) 1951-10-24

Family

ID=10095474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1745549A Expired GB659665A (en) 1949-07-01 1949-07-01 Method of making metal bodies from metal powder

Country Status (1)

Country Link
GB (1) GB659665A (en)

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