Lubricants for powdered metals, and powdered metal compositions

Details Lubricants for powdered metals, and powdered metal compositions Lubricants for powdered metals, and powdered metal compositions

1976-12-10

1978-08-15

Lovering, Richard D.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75211, 75214, 252 10, 252 56S, 252316, 264111, B22F 100, B01J 1302, C10M 514, C10M 520

Patent

active

041069323

ABSTRACT:
Discrete pressure-rupturable microcapsules for lubrication in powder metallurgy are disclosed comprising a core and a solid shell surrounding said core; the core comprises an organic liquid lubricant able to wet powdered metals, the shell comprises a thin non-atmospherically degradable polymeric material; the microcapsules may be used as the sole lubricant in the manufacture of sintered metal parts or may be used in admixture with unencapsulated solid lubricants to produce synergistic free-flowing compositions; there are also provided novel compositions of matter for forming sintered metal components comprising a mixture of sinterable, powdered metal and the microcapsules.

REFERENCES:
patent: 2757139 (1956-07-01), Matuszak et al.
patent: 2900342 (1959-08-01), Manteuffel et al.
patent: 3513943 (1970-05-01), Ernst et al.
patent: 3539472 (1970-11-01), Findeisen et al.
patent: 3577515 (1971-05-01), Vandegaer
patent: 3728110 (1973-04-01), Klar et al.
patent: 3743604 (1973-07-01), Schnoring et al.
patent: 3985840 (1976-10-01), Hofacker
Dombrow: "Polyurethanes," Reinhold Plastics Applications Series, 1st Edit., 1957, Reinhold Publ. Corp., New York, p. 17.

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