带齿齿坯半热精锻模设计太原工业大学（山西太原０３００２４）许树勤太原重机学院付元，董仕深我国齿轮专业生产厂长期以来材料利用率低，约为３８％～４０％，造成齿轮材料利用率不高的主要原因是齿轮锻件毛坯较大。为了提高材料利用率、降低成本，很多齿坯锻造厂进行了... Taiyuan University of Technology (Taiyuan, Shanxi 030024) Xu Shuqin Taiyuan Institute of Heavy Machinery Fu Yuan, Dong Shishen China’s professional gear manufacturing plant for a long time the low material utilization, about 38% to 40%, resulting in gear materials The main reason for the low utilization rate is gear forging rough larger. In order to improve material utilization, reduce costs, many tooth blank forging plant carried out ...