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国内外拉丝行业为满足连续化、高速化、大型化拉丝生产的需要,从提高拉丝模的寿命入手,对改进拉丝模的材质、几何形状及加工方法进行了大量的研究和探讨。在材质方面,除进一步改进硬质合金的材料性能及在模孔表面涂镀耐磨层外,相继出现了碳化钢,钢结硬质合金,Al_2O_3及人造聚晶金刚石等拉丝模的新材料。人造聚晶金刚石最初是由美国通用电气
In order to meet the need of continuous, high-speed and large-scale drawing, the domestic and foreign drawing industries start with improving the service life of the drawing dies, and make a great deal of research and discussion on the material, geometry and processing methods of the improved drawing dies. In terms of materials, in addition to further improving the material properties of carbide and coating the wear-resistant layer on the surface of the die hole, new materials such as carbon steel, steel hard alloy, Al 2 O 3 and artificial polycrystalline diamond drawing dies have appeared one after another. Artificial polycrystalline diamond was originally made by the United States General Electric