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    • 21. 发明专利
    • External parts for watch
    • 观察外部部件
    • JPS59140364A
    • 1984-08-11
    • JP1327883
    • 1983-01-28
    • Seiko Instr & Electronics Ltd
    • SHINOZAKI TAKASHI
    • C23C8/52C23C8/42C23C8/50C23C26/00G04B37/22
    • C23C8/50C23C8/42C23C26/00
    • PURPOSE:To blacken the surfaces of metallic external parts for a watch and to improve the wear resistance and corrosion resistance by plating the surfaces of the parts with chromium and by carrying out sulfurizing and nitriding. CONSTITUTION:The surfaces of metallic external parts for a watch made of stainless steel, brass, German silver or the like are plated with chromium in 1-50mum thickness. The chromium-plated parts are sulfurized and nitrided by heating at about 550-600 deg.C in a salt bath contg. alkali metallic cyanate, alkali metallic carbonate and metallic sulfide as principal components to form chromium sulfide and chromium nitride in the chromium plating up to about 5mum depth from the surface. By the treatment, black films having fine appearance, superior wear resistance and corrosion resistance are formed on the surfaces of the external parts.
    • 目的:使手表的金属外部表面变黑,并通过镀铬表面镀铬并进行硫化和渗氮来提高耐磨性和耐腐蚀性。 构成:用不锈钢,黄铜,德国银等制成的手表的金属外部表面镀有1-50μm厚的铬。 镀铬部件通过在盐浴中加热约550-600℃进行硫化和氮化。 碱金属氰酸盐,碱金属碳酸盐和金属硫化物作为主要成分,在铬镀层中形成硫化铬和氮化铬,从表面达到约5mum的深度。 通过处理,在外部部件的表面上形成具有良好外观,优异的耐磨性和耐腐蚀性的黑色膜。
    • 29. 发明专利
    • Iron steel member having nitrogen compound layer and process for production thereof
    • 具有氮化合物层的钢铁构件及其生产方法
    • JP2012062494A
    • 2012-03-29
    • JP2010205145
    • 2010-09-14
    • Nippon Parkerizing Co Ltd日本パーカライジング株式会社
    • KONISHI TOMOYOSHIIKEDA YOSHIHIROBEPPU MASAAKI
    • C23C8/14C21D1/06C21D1/10C21D6/00C23C8/26C23C8/40C23C8/50C23C8/80
    • C23C8/80C21D1/10C21D1/42C21D2211/008C21D2221/00C23C8/02C23C8/14C23C8/26C23C8/40C23C8/50Y02P10/253
    • PROBLEM TO BE SOLVED: To provide a means which ensures a nitrogen compound layer to remain uniformly even on an object having a complex shape such as a gear tooth surface (e.g., a mechanical structural part) and also ensures the formation of a fine martensite, and therefore can impart excellent mechanical strength including bearing strength, wear resistance and bending fatigue strength to the object having the complex shape after high-frequency hardening.SOLUTION: A method for subjecting an iron steel material to a combined heat treatment of a nitriding treatment and a high-frequency hardening treatment includes, prior to the high-frequency hardening treatment after the nitriding treatment, an additional treatment step of forming an oxide layer having a thickness of 0.1 to 5 μm on a surface side on the nitrogen compound layer formed on an iron steel by the nitriding treatment at 600°C or lower. Here, the high-frequency hardening treatment is carried out under such conditions that the nitrogen compound layer having hardness of HV 550 or more and a thickness of 1 μm or more is remained on the surface layer of the iron steel material.
    • 要解决的问题:提供一种确保氮化合物层均匀地均匀地均匀地保持在诸如齿轮齿面(例如机械结构部件)的具有复杂形状的物体上并且还确保形成 因此能够对具有高频硬化后的复杂形状的物体赋予优异的机械强度,包括轴承强度,耐磨性和弯曲疲劳强度。 解决方案:一种用于对钢铁材料进行氮化处理和高频硬化处理的组合热处理的方法包括在氮化处理之后的高频硬化处理之前,进行另外的处理步骤,其形成 通过在600℃以下的氮化处理,在形成在铁钢上的氮化合物层的表面侧的厚度为0.1〜5μm的氧化物层。 这里,高铁硬化处理是在钢铁材料的表面层上残存有硬度为HV550以上且厚度为1μm以上的氮化合物层的条件下进行的。 版权所有(C)2012,JPO&INPIT