B - Operations – Transporting – 21 – H
Patent
B - Operations, Transporting
21
H
13/1, 75/162, 75
B21H 3/02 (2006.01) B22F 3/18 (2006.01) B22F 5/06 (2006.01)
Patent
CA 1165514
ABSTRACT OF THE DISCLOSURE A method of thread rolling a cylindrical sintered P/M blank is provided comprising, forming a sintered cylindrical powder metal P/M) blank of density ranging from about 75% to 32% of the actual density of said metal blank having a selected diameter larger than the final pitch diameter of a predetermined roll threaded product produced therefrom and not substantially exceeding the outside diameter of said predetermined roll threaded product. The P/M blank diameter selected is substan- tially inversely related to the density of the blank, the P/M diameter selected being correlated to produce a substantially full thread. The sintered P/M blank is then thread rolled using a threading die corresponding to the gage of the predeter- mined roll threaded product to be produced.
348123
Chmura William J.
Slusarski Ronald S.
Smart & Biggar
Textron Inc.
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