图1所示的零件是生产衡器刀子的弹簧夹头,材料为65Mn。该零件在使用过程中常在φ3mm孔处开裂或折断,或丧失弹夹能力。经分析得知,这是弹簧夹头强度低、弹性差所致。通过实践,采用图2的工艺进行热处理,弹簧夹头的性能得到明显的提高,在两 The part shown in Figure 1 is a collet that produces a weigher knife, made of 65Mn material. The parts are often cracked or broken at φ3mm holes during use, or lost the ability to clip. The analysis shows that this is the low strength of the spring chuck, poor flexibility. Through practice, using the process shown in Figure 2 heat treatment, collet chuck performance has been significantly improved in the two