Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1981-05-26
1983-07-19
Larson, Lowell A.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291495PM, 419 32, 419 34, 419 69, 419 43, 419 50, 419 53, 419 28, 419 29, B21K 104
Patent
active
043935630
ABSTRACT:
A method and material for the manufacture of improved bearing elements such as annular inner and outer bearing ring blanks for ball, roller and needle bearing assemblies comprising the steps of mixing a powder consisting substantially of iron with ferro-alloy powders of substantially smaller size, each ferro-alloy containing at least 80% iron and the balance being an alloying element, together with graphite powder and a lubricant, compacting the resulting mixture to form a preform, pre-sintering the preform, and then coating the sintered preform with a stop-off and lubricant. The preform is subjected to a plastic deformation of at least 50% in a cold (room temperature) forging operation to produce an article which is at least 98% dense and has approximately the shape of the finished article. This cold forged shape is resintered and annealed, after which the annealed and resintered shape is roll formed into substantially final dimensions. The article can be followed by a suitable heat treatment for hardening the shape.
REFERENCES:
patent: 3626564 (1971-12-01), Daniel
patent: 3782794 (1974-01-01), Chmura et al.
patent: 3867751 (1975-02-01), Connell et al.
patent: 3874049 (1975-04-01), Ferguson
patent: 3992763 (1976-11-01), Haynie et al.
patent: 4002471 (1977-01-01), Sarnes et al.
patent: 4006016 (1977-02-01), Zambrow et al.
patent: 4051590 (1977-10-01), Halter et al.
patent: 4059879 (1977-11-01), Chmura et al.
Larson Lowell A.
Rising V. K.
LandOfFree
Cold forced sintered powder metal annular bearing ring blanks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cold forced sintered powder metal annular bearing ring blanks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cold forced sintered powder metal annular bearing ring blanks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-744717