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Why is it difficult to machine valve products?
The author: Time:2021/4/2

  阀门材料的种类很多,除各种铸铁、碳素钢、合金结构钢及有色企属外,还采用钢、不锈钢、铬镍不锈钢、铬钼铝渗氮钢、沉淀硬化钢、铬钼钢、铬钼钒钢、铬锰氮耐酸钢,低温钢、钛及钛合金、钴基硬质合金及尼龙、塑料等非金属材料。上述大部分高强、耐蚀和高硬材料的切削性能不好。如不锈钢,由于其韧性大、热强度高、热导率低。切屑黏附性大及加工硬化趋势强等原因,刀具极易磨损,很难达到规定的零件加工精度和表面粗糙度。
  而阀门密封面的几何形状精度和表面粗糙度要求很高,因此更增加了机械加工的难度。材料的切削性能差,给零件的加工方法。刀具角度和几何形状、刀具材料、切削用量及工艺装备等方面。

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