Novel Blasting-Like Lubricating Process for Cold Extrusion  

作　　者：陈海棠 胡成亮 龚爱军 施卫兵 赵震 CHEN Haitang;HU Chengliang;GONG Aijun;SHI Weibing;ZHAO Zhen(Institute of Forming Technology&Equipment,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200030,China;National Engineering Research Center of Die and Mold CAD,Shanghai Jiao Tong University,Shanghai 200030,China;Jiangsu Sunway Precision Forging Co.,Ltd.,Yancheng 224100,Jiangsu,China)

机构地区：[1]Institute of Forming Technology&Equipment,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200030,China [2]National Engineering Research Center of Die and Mold CAD,Shanghai Jiao Tong University,Shanghai 200030,China [3]Jiangsu Sunway Precision Forging Co.,Ltd.,Yancheng 224100,Jiangsu,China

出　　处：《Journal of Shanghai Jiaotong university(Science)》2024年第2期322-329,共8页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(No.51475294)。

摘　　要：A blasting-like lubricating process(combination of shot blasting and lubricating processes)is proposed.In this process,the specimens to be treated,alloy shots,and solid lubricating powder are rotated together in a roller.The surface pockets formed due to the impact by the shots can store lubricants,and the lubricant can also adhere to the specimen surface by hitting.The effects of process parameters,including rolling time,rotational speed,mass of alloy shots,and the diameter of shots,on the surface topography of the steel specimen are investigated using 13 experimental schemes.The distribution ratio and average depth of surface pockets on the defined areas of the specimen are quantitatively analyzed.Four selected schemes with the MoS_(2) solid lubricating powder are further carried out to lubricate the cylindrical billets,and the lubricating effect is evaluated using the steady combined forward and backward extrusion test.The indicated friction factor of the novel blasting-like process is smaller than that of the conventional phosphate-soap coating process.

关 键 词：blasting-like process lubricating surface pocket friction factor cold extrusion 

分 类 号：TG376.3[金属学及工艺—金属压力加工]