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电厂汽轮发电机组主轴(φ200mm 至φ420mm)和其它大型机械设备主轴件的弯曲调直有两种方法:一种是火焰局部加热法,另一种是火焰加热加压法。这两种方法在局部加热时,要产生新的内应力,且不容易消除,而且金属易产生裂纹。特别是合金钢的轴,局部加热更为危险。为此,这里介绍一种电加热加压自重松弛法,是沿着轴的整个断面均匀加热,同时直轴的过程是在一定的应变情况下,产生塑性变形扩散作用,当去压后应力也随之消除,
There are two ways to adjust the bending of main shaft (φ200mm to φ420mm) of turbine generator set in power plant and the main shaft of other large mechanical equipment: one is the local flame heating method and the other is the flame heating and pressurizing method. These two methods in the local heating, to produce new internal stress, and not easy to eliminate, and the metal is easy to crack. Especially the shaft of alloy steel, local heating is more dangerous. To this end, here introduced a method of heating and pressurizing the weight of the relaxation method is uniform along the axis of the entire cross section, while the process of direct axis is a certain strain, the plastic deformation and diffusion, when the stress after decompression With the elimination,