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GB/T 3098.22—2009附录B向用户提供一种用非调质冷镦钢线材加工8.8级高强度紧固件的工艺方法。省去冷镦前的退火和冷镦后的调质热处理工序,通过拉拔工艺的调整、稳定化处理技术获得8.8级高强度紧固件各项性能。
GB / T 3098.22-2009 Appendix B to provide users with a non-quenched and tempered cold heading steel wire processing 8.8 high-strength fasteners process. Eliminating the annealing and cold heading heat treatment before cold forging, through the drawing process of adjustment, stabilization technology to obtain 8.8 high-strength fasteners of various properties.