长尾锥齿轮(图1)的毛坯一直是采用热模锻成形,但由于高温氧化、加工精度低、加工余量大等原因,造成材料利用率只有28～ 34％,材料费为齿坯价格的69～72％,机加工时和刀具消耗也相应增大。针对该类齿轮材料为18Cr2Ni4WA钢和尾长、心空等特征,经多种方案对比,可以选用温挤成形新工艺。 Long tail bevel gear (Figure 1) has been used for rough blank forging, but due to high temperature oxidation, low machining accuracy, allowance and other reasons, resulting in material utilization rate of only 28 to 34%, the material costs for the tooth blank prices Of 69 ~ 72%, machining and tool consumption also increased accordingly. For such gear materials for the 18Cr2Ni4WA steel and tail length, heart and other characteristics, the comparison of a variety of programs, you can choose the new technology of warm extrusion forming.