Method for producing a family of forged ring rolling...

Details Method for producing a family of forged ring rolling... Method for producing a family of forged ring rolling...

B - Operations, Transporting

21

J

78/2, 78/38

B21J 13/02 (2006.01) B21H 1/06 (2006.01) B21K 1/30 (2006.01) B21K 1/76 (2006.01)

Patent

CA 1298995

ABSTRACT OF THE DISCLOSURE A method (Figures 4 and 4A) for making ring rolling preforms (102) of substantially toroidal shape for ring rolling (84) into substantially rectangular cross-sectional wall shaped forging blank rings (104) to be precision forged (86) into near net ring gear forgings (106) for heavy-duty drive axle ring gears (14) is provided. The method, and the preform forging die (138) used therefor, allow a series of preforms having between eighty percent (80%) to one hundred percent (100%) of the volume of the toroidal cavity portion (150) of the preform die to be forged utilizing a common die.

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