梳理器材用高品质微合金钢的成分设计及性能

Composition Design and Property of High Quality Microalloyed Steel for Combing Equipment

根据梳理器材针布梳针的性能需求,以及高碳钢的强韧化原理和微合金化原理,设计成分并制备了新型针布梳针用GRST-5钢,研究了其冷加工性能、硬度、显微组织和耐磨性能,并与传统80WV钢梳针进行了对比。结果表明:设计的GRST-5钢中铌质量分数为0.030%～0.040%,钒质量分数为0.08～0.12%;与80WV钢相比,GRST-5钢的冷加工性能更好,中间生产工序减少,生产成本得到显著降低;GRST-5钢梳针齿尖的平均硬度达到820.25HV,比80WV钢的提高了约30HV;GRST-5钢梳针的显微组织为隐晶马氏体,奥氏体晶粒尺寸为3～5μm;GRST-5钢梳针的耐磨性能与80WV钢的相当,GRST-5钢可替代80WV钢来生产针布梳针。

The composition of a new type GRST-5steel for carding wire was designed according to the performance requirements of carding wires of combing equipment,toughening principle and microalloying principle of high carbon steel,and the steel was prepared.The cold working performance,hardness,microstructure and wear resistance were studied,and compared with those of traditional 80 WV steel carding wires.The results show that the designed GRST-5steel contained 0.030wt%-0.040wt% niobium and 0.08wt%-0.12wt% vanadium.The cold working performance of GRST-5steel was better than that of 80 WV steel;the intermediate process decreased,and the production cost decreased obviously.The average hardness of carding wire tooth tips made of GRST-5steel was820.25 HV,increasing by 30 HV compared with that made of 80 WV steel.The microstructure of GRST-5steel carding wires consisted of cryptocrystalline martensite,and the size of austenite was 3-5μm.GRST-5steel carding wires had the same wear resistance as 80 WV steel carding wires had,indicating that GRST-5steel could be a substitute material of 80 WV steel in the manufacture of carding wires.