METHOD OF MANUFACTURING EDGED TOOL
    2.
    发明申请

    公开(公告)号:US20180216239A1

    公开(公告)日:2018-08-02

    申请号:US15811133

    申请日:2017-11-13

    IPC分类号: C23F4/00 C23C8/14

    摘要: A method of manufacturing an edged tool on surfaces of which rusting and coloration hardly occur is provided. This method includes a plasma step which includes placing a metallic base having processed surfaces obtained by processing in a vacuum chamber, generating plasma in the vacuum chamber, and subjecting the metallic base to plasma treatment at a temperature of the metallic base adjusted to 280 to 325° C. to sharpen the processed surfaces to thereby obtain an edged tool precursor, and an oxidation step which includes reducing an internal temperature of the vacuum chamber to a specific temperature ranging from 100 to 225° C. after completion of generation of the plasma, and introducing an oxygen-containing gas into the vacuum chamber to form an oxide film on surfaces of the edged tool precursor.

    Method for manufacturing steel plate with a layered structure
    8.
    发明授权
    Method for manufacturing steel plate with a layered structure 有权
    具有层状结构的钢板的制造方法

    公开(公告)号:US08980017B2

    公开(公告)日:2015-03-17

    申请号:US13456702

    申请日:2012-04-26

    摘要: A method for manufacturing a steel plate provided with a layered structure. A method for manufacturing a steel plate includes: i) providing a high carbon steel plate; ii) homogenizing the high carbon steel plate; iii) transforming the high carbon steel plate into an austenitic phase by heating the high carbon steel plate; iv) contacting the high carbon steel plate with an oxidization gas and converting the high carbon steel plate into a steel plate comprising surface layers that are spaced apart from each other and are decarburized to be transformed into a ferritic phase, and a center layer that is located between the surface layers and is not decarburized; and v) cooling the high carbon steel plate and transforming the center layer into a martensitic phase.

    摘要翻译: 一种具有层叠结构的钢板的制造方法。 钢板的制造方法包括:i)提供高碳钢板; ii)均质高碳钢板; iii)通过加热高碳钢板将高碳钢板转化为奥氏体相; iv)使高碳钢板与氧化气体接触,并将高碳钢板转化成钢板,该钢板包括彼此间隔开的表层,并被脱碳转化为铁素体相,中心层为 位于表层之间,不脱碳; 和v)冷却高碳钢板并将中心层转变成马氏体相。