The invention belongs to the technical field of alloy smelting, and particularly relates to engineering steel capable of stably improving hardenability and a preparation method and application of the engineering steel. According to the method, besides main control elements of C, Si, Mn and Cr and residual elements of Ni, Cu and the like are precisely controlled, the concentration of B in the steel needs to be precisely controlled within a specified range no matter whether the B is added or the residual B is utilized; the content and proportion of Ti and N are strictly controlled, and Al is adopted as a deoxidizing agent to strictly control the content of O and reduce the consumption of B and Ti by O, so that the hardenability of the steel is improved, and the steel is more stable. In addition, the invention has the advantage of cost because any expensive alloy elements such as Ni, Mo, V, Nb and the like are not additionally added or added.

    本发明属于合金冶炼技术领域,具体涉及一种稳定提高淬透性的工程用钢及其制备方法和应用。本发明中,在对主控元素C、Si、Mn、Cr及残余元素Ni、Cu等做精准管控以外,无论是添加的B还是利用残余的B,都要将钢中的B浓度精准控制在规定的范围内;严格控制Ti、N含量和比例,并同时采用Al作为脱氧剂,来严格控制O的含量,减少O对B及Ti的消耗,从而提高钢材的淬透性,并使之更稳定。另外,本发明具有成本优势,因为不额外添加或增加Ni、Mo、V、Nb等任何昂贵的合金元素。


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    Title :

    Engineering steel capable of stably improving hardenability as well as preparation method and application of engineering steel


    Additional title:

    一种稳定提高淬透性的工程用钢及其制备方法和应用


    Contributors:
    KOBAYASHI YOSHIHIRO (author) / ZHANG BO (author) / CHEN ZHEN (author) / HUANG ZHUOZHI (author) / MA ZIYANG (author) / ZHANG ANZHAN (author) / LIU TENGFEI (author) / ZHANG ZHENGJIE (author) / HUANG JUNFENG (author) / FENG XIAOPENG (author)

    Publication date :

    2024-05-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C22C Legierungen , ALLOYS / B62D MOTOR VEHICLES , Motorfahrzeuge / C21C Weiterverarbeiten von Roheisen, z.B. Feinen, Herstellen von Schweißeisen oder Stahl , PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS







    Development of restricted hardenability band steel

    Sponzilli,J.T. / Walter,G.H. / Doane,D.V. et al. | Automotive engineering | 1987