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1.镍钴合金性能 镍钴合金是一种银白色金属,是以Ni及Co为主组成的金属,其硬度很低,密度较大,韧性较强,其成分约为:镍79.27％。钴17.2％,硅1.04％、M_n(锰)1.97％,铝(Al)1.62％,这种合金具有优良的耐腐蚀性能,主要用于石油化工领域。 相对于切削性能较好的45号钢而言,镍钴合金切削性较差,刀具耐用度低,而且由于镍钴合金比重较大,离心力大,车削时不易卡好,掉头车削必须校正。 2.细长轴车削工艺 有一个要求车削的镍钴合金件,长850mm,直径43,需要达到的直线度为φ0.1,表面粗糙度Ra6.3。 我们采用夹一头,顶一头,中间采用跟刀架的方
1. Nickel-cobalt alloy performance Nickel-cobalt alloy is a silver-white metal, mainly composed of Ni and Co metal, its hardness is very low, high density, toughness, its composition is about: 79.27% of nickel. Cobalt 17.2%, silicon 1.04%, M_n (manganese) 1.97% and aluminum (Al) 1.62%. This alloy has excellent corrosion resistance and is mainly used in the field of petrochemical industry. Relative to the better cutting performance of 45 steel, nickel-cobalt alloy machinability is poor, tool durability is low, but also due to the larger proportion of nickel-cobalt alloy, centrifugal force, turning is not easy to card, turn-turning must be corrected. 2. Slender shaft turning process There is a nickel-cobalt alloy parts required for turning, length 850mm, diameter 43, need to reach a straightness of φ0.1, surface roughness Ra6.3. We use a clip, the top, the middle with the knife holder side