HIGH FATIGUE STRENGTH COMPONENTS REQUIRING AREAS OF HIGH HARDNESS
    61.
    发明申请
    HIGH FATIGUE STRENGTH COMPONENTS REQUIRING AREAS OF HIGH HARDNESS 审中-公开
    需要高硬度区域的高疲劳强度组分

    公开(公告)号:US20160298203A1

    公开(公告)日:2016-10-13

    申请号:US15094173

    申请日:2016-04-08

    发明人: LLOYD A. HACKEL

    摘要: Metal components subject to wear or contact fatigue in a first area, and subject to bending, axial and/or torsional stress loading in a second area comprise a surface hardened, first surface layer in the first area; and a surface compressive-stress treated, second surface layer in the second area. The second surface layer has a material hardness different from, and typically lower than the first surface layer, and induced residual compressive stress to improve fatigue strength. Example components described include a gear, a cog, a pinion, a rack, a splined shaft, a splined coupling, a torqueing tool and a nut driving tool. A hybrid manufacturing process is described, including area-selective surface hardening combined with a process to add compressive stress to fatigue failure prone areas.

    摘要翻译: 在第一区域中经受磨损或接触疲劳的金属部件,并且在第二区域中受到弯曲,轴向和/或扭转应力负载的金属部件包括第一区域中的表面硬化的第一表面层; 以及在第二区域中的表面压应力处理的第二表面层。 第二表层具有与第一表面层不同的材料硬度,并且通常低于第一表面层,并引起残余压应力以改善疲劳强度。 所描述的示例性部件包括齿轮,齿轮,小齿轮,齿条,花键轴,花键联接器,扭矩工具和螺母驱动工具。 描述了混合制造方法,包括面积选择性表面硬化以及将疲劳破坏倾向区域的压应力增加的过程。

    Method of manufacturing grain-oriented electrical steel sheet
    70.
    发明授权
    Method of manufacturing grain-oriented electrical steel sheet 有权
    晶粒取向电工钢板的制造方法

    公开(公告)号:US09175362B2

    公开(公告)日:2015-11-03

    申请号:US13579692

    申请日:2011-02-18

    摘要: Hot rolling is performed on a steel with a predetermined composition containing Ti: 0.0020 mass % to 0.010 mass % and/or Cu: 0.010 mass % to 0.50 mass % to obtain a hot-rolled steel sheet. Annealing is performed on the hot-rolled steel sheet to obtain an annealed steel sheet. Cold rolling is performed on the annealed steel sheet to obtain a cold-rolled steel sheet. Decarburization annealing and nitridation annealing are performed on the cold-rolled steel sheet to obtain a decarburized nitrided steel sheet. Then, finish annealing is performed on the decarburized nitrided steel sheet. When obtaining the decarburized nitrided steel sheet, heating on the cold-rolled steel sheet is started in a decarburizing and nitriding atmosphere, then first annealing is performed at a first temperature within a predetermined range, and then second annealing is performed at a second temperature within a predetermined range.

    摘要翻译: 对含有Ti:0.0020质量%至0.010质量%和/或Cu:0.010质量%至0.50质量%的预定组成的钢进行热轧,得到热轧钢板。 在热轧钢板上进行退火,得到退火钢板。 在退火钢板上进行冷轧,得到冷轧钢板。 在冷轧钢板上进行脱碳退火和氮化退火,得到脱碳氮化钢板。 然后,对脱碳氮化钢板进行最终退火。 当获得脱碳氮化钢板时,在脱碳氮化气氛中开始对冷轧钢板进行加热,然后在规定范围内的第一温度进行第一次退火,然后在第二温度下进行第二次退火 预定范围。