GB632874A - Improved manufacture of porous ferrous articles - Google Patents

Improved manufacture of porous ferrous articles

Info

Publication number
GB632874A
GB632874A GB23651/47A GB2365147A GB632874A GB 632874 A GB632874 A GB 632874A GB 23651/47 A GB23651/47 A GB 23651/47A GB 2365147 A GB2365147 A GB 2365147A GB 632874 A GB632874 A GB 632874A
Authority
GB
United Kingdom
Prior art keywords
phosphorus
powder
ferro
sintering
weight
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
GB23651/47A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation 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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB632874A publication Critical patent/GB632874A/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
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C22C33/0214—Using a mixture of prealloyed powders or a master alloy comprising P or a phosphorus compound

Landscapes

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

Abstract

632,874. Powder metallurgy. GENERAL MOTORS CORPORATION. Aug. 27, 1947, No. 23651. Convention date, Nov. 29, 1939. [Class 83 (iv)] Porous ferrous articles substantially free from carbon are made by compacting iron powder with sufficient ferro-phosphorus powder to bring the phosphorus content of the finished article to between one quarter and two and a half per cent by weight, and sintering at a temperature above the melting point of iron-ironphosphide eutectic, preferably between 1950‹ F. and 2100‹ F. The iron powder may be mixed with alloying ingredients such as copper, nickel, chromium, molybdenum, vanadium and the ferro-phosphorus should have a phosphorus content in excess of three per cent by weight. Sintering may be carried out under decarbonizing conditions, and the phosphorus may be added in any desired form.
GB23651/47A 1939-11-29 1947-08-27 Improved manufacture of porous ferrous articles Expired GB632874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US632874XA 1939-11-29 1939-11-29

Publications (1)

Publication Number Publication Date
GB632874A true GB632874A (en) 1949-12-05

Family

ID=22048211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23651/47A Expired GB632874A (en) 1939-11-29 1947-08-27 Improved manufacture of porous ferrous articles

Country Status (1)

Country Link
GB (1) GB632874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855296A (en) * 1955-08-17 1958-10-07 Gen Motors Corp Method of sintering nickel powder onto stainless steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855296A (en) * 1955-08-17 1958-10-07 Gen Motors Corp Method of sintering nickel powder onto stainless steel

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