steel rolled gear box output shaft for transmission of car and

steel rolled gear box output shaft for transmission of car and SUV material: 20CrMo processing: cross wedge rolling net weight: hardness: 170-190HB (after normalizing)       Process advantages: 1) Higher production efficiency: 10 pieces per minute 2)Higher material utilization: more than 90% 3)Long-life dies: more than 10 times than that of die forging process 4)Good quality: the precision can be up to micron order of the steel-die -forgings national standards( diameter:±0.3mm, length:±0.5mm)   Qualification: TS16949 audited manufacture Most advance machining and testing facility ultrasonic inspection no crack and shrinkage     CWR (cross wedge-rolling) technology:  The basic principle of cross wedge rolling technology:   Heated bar material is been put into the middle of two synclastic models with wedge-shaped bumps. Then the material is driven by the models to do reverse rotary movement. Meanwhile it comes about radial deformation and axial extension deformation, thus forms a stepped shaft part.
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