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US 3,937,630 AGranted
Method for producing iron-base sintered alloys with high density
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsTakashi Kimura, Azusa Majima, Hiroshi Hamamoto
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Abstract
Iron-base sintered alloys, characterized by high density and good hardness, have been prepared by sintering an iron-base particulate material at a temperature within the range at which an alloy consisting of said particulate material will form a solid-liquid phase.
Claims7
A method for producing a sintered product of iron-base alloy having a high density and high hardness consisting essentially of:
- placing a mixture of a particulate material selected from the group consisting of mixed particles of iron and carbon, mixed particles of iron and other metal, mixed particles of iron, other metal and carbon, and particles of an iron-base alloy in a suitable mold, wherein said other metal is selected from the group consisting of manganese, tungsten, molybdenum, chromium, vanadium, niobium and tantalum,
- heating said mixture to a temperature such that an alloy consisting of said particulate mixture will form a coexistent liquid and solid phase,
- maintaining said temperature for a period sufficient to cause sintering,
- cooling said sintered product in said mold, and thereafter removing said product in solid phase from the mold.
1 more element
Dependencies are inferred from the claim text.