Railway accessories hammer strip application: used for a paving engineering machinery compaction paver (also called vibratory roller, road roller, road paver, etc.) products, through rapid and repeated up and down vibration hammering, the road surface is flattened and compacted, belonging to a long plate-shaped part; Features: It belongs to a high-precision plate-shaped part, with thin and long workpieces, high straightness and flatness requirements, and high surface hardness and layer depth requirements; technical requirements for hammer bars for railway accessories: blanks are generally made of square steel. The main processes include: blanking-heat treatment pretreatment-milling (multiple planes and inclined planes)-induction quenching and tempering-straightening-grinding-milling groove-drilling, tapping-fine straightening and other processes. The main processing equipment includes processing center, straightening machine, quenching equipment, surface grinder and other equipment. Railway accessories hammer bar key testing items: surface roughness, surface hardness, hardened layer depth, flatness, straightness and other items.