在电子行业产品生产中,使用十字槽电动起子,可使紧固件的装配速度大为提高。我厂使用的外购电动起子头见图1,用量很大,它多因棱角磨钝变圆而报废。经检查,其断口晶粒粗大,表面有脱碳,因而使用寿命低,成本高,并且影响流水线上的装配速度,所以我们决定自制。起子头选用球化退火状态供货的T10A冷拉圆钢制造。淬火加热 In the electronics industry products, the use of cross slot electric screwdrivers, fasteners can greatly increase the assembly speed. I use the factory purchased electric screwdriver head see Figure 1, a large amount of usage, it is mostly due to angular blunt rounded and scrapped. The inspection, the fracture coarse grains, the surface decarburization, which has low life expectancy, high cost, and affect the assembly speed on the assembly line, so we decided to self-made. The screwdriver head is made of T10A cold-drawn round bar supplied by ball annealing. Quenching heating