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用液体渗碳、液体氰化、气体中温碳氮共渗等工艺处理缝纫机零件,存在着热处理变形大、磨削工作量大、耐磨性差等缺点。气体软氮化(铁素体氮碳共渗)工艺,比较适合于薄层、变形要求高的缝纫机零件。经过试验研究,采用气体软氮化代替液体渗碳工艺,处理缝纫机的螺旋伞齿轮等低合金钢零件,取得了提高产品质量、省略磨削工序、降低能耗、克服环境污染等多方面的效果。一、螺旋伞齿轮使用特点和存在问题螺旋伞齿轮是工业缝纫机的关键零件,
Liquid carburizing, liquid cyanide, gas temperature carbonitriding process such as sewing machine parts, there are heat deformation, grinding workload, poor wear resistance and other shortcomings. Gas nitrocarburizing (ferritic nitrocarburizing) process, more suitable for thin, high deformation of the sewing machine parts. After the experimental research, the gas nitrocarburizing instead of the liquid carburizing process, the processing of spiral bevel gear sewing machines and other low alloy steel parts, has been made to improve product quality, omit the grinding process, reduce energy consumption, to overcome environmental pollution, and many other effects . First, the use of spiral bevel gear features and problems Spiral bevel gear is a key part of industrial sewing machines,