微合金化非调质钢是本世纪70年代材料科技的新成果。它是在中碳钢中加入微量合金元素如V、Ti、Nb、N等,通过轧锻工艺,利用微合金碳化物的弥散强化机理,达到提高强度的目的,用以代替调质处理的中碳钢。我厂从1984年开展易切非调质钢的研究课题已来,经过各项机械性能和工艺性能的试验,把这一新钢种已应用于主导产品的生产,用钢100余t,生产零件近万件,装机2246台,实践证明,采用YF45MnV易切非调质钢可代替4~5钢制作要求调质处理的各种机械的轴类零件,可省掉调质处理,节省大量能 Microalloyed non quenched and tempered steel is the new achievement of material science and technology in 70s of this century. It is in the medium-carbon steel by adding trace alloying elements such as V, Ti, Nb, N, etc., by rolling process, the use of micro-alloy carbide dispersion strengthening mechanism to achieve the purpose of improving the strength to replace the quenching process Carbon steel. I plant from 1984 to carry out the subject of non-quenched and tempered steel research project has come, after a variety of mechanical properties and process performance tests, the new steel has been used in the production of leading products, steel more than 100 t, production Nearly 10,000 parts, installed 2246 units, the practice proved that the use of YF45MnV easy to cut non-quenched and tempered steel can replace 4 ~ 5 steel production requirements of quenching and tempering of various mechanical shaft parts, save the quenching and tempering, save a lot of energy