由哈尔滨工业大学锻压教研室承担的这项课题,已于最近(1987年10月23日)在哈尔滨召开了由机械委机械院组成的鉴定会。 130汽车连杆热锻模系5 CrMnMo钢制成,模块尺寸大(φ160×150),重量为62kg),超细化处理困难,且成本高。因此,采用供应状态的5Cr-MnMo钢做超塑性等温挤压来生产130汽车连杆锻 This issue, undertaken by forging department of Harbin Institute of Technology, held an appraisal meeting of Machinery Committee of Mechanical Committee in Harbin recently (October 23, 1987). 130 Automotive connecting rod hot forging mold is made of 5 CrMnMo steel with large module size (φ160 × 150) and weight of 62kg), it is difficult to superfine it and its cost is high. Therefore, the supply status of the 5Cr-MnMo steel isopoplastic isothermal extrusion to produce 130 car forging