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大型厂1200矫直机,自1972年开始试用尼龙瓦。使用结果表明,尼龙瓦比铜瓦有许多优点,解决了1200矫直机瓦热抱轴问题,深受工人欢迎。尼龙瓦长度和外径之比为1.25:1,壁厚20毫米,是内径的1/20。瓦的内表面设有两个对称的油槽,中部有两个对称的油孔。在200吨压力下尼龙瓦的安全系数为11.7～13.8(稳定性的安全系数)。由于塑料的弹性模量较小,蠕变较大,所以其过盈量必须较金属轴承大一点
Large plant 1200 straightening machine, since 1972 trial nylon tile. The results show that there are many advantages of nylon tile than copper tile, which solves the problem of 1200 leveler tile thermal axis and is very popular with workers. Nylon tile length and diameter ratio of 1.25: 1, wall thickness 20 mm, is the inner diameter of 1/20. The inner surface of the tile has two symmetrical oil grooves and two symmetrical oil holes in the middle. Nylon tile at 200 tons of pressure safety factor of 11.7 ~ 13.8 (stability of the safety factor). Due to the smaller plastic modulus of elasticity, creep larger, so the interference must be larger than the metal bearing