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平晶是目前工厂中用来检定某些计量器具工作面平面性或平行性的主要量具。由于受条件限制,许多厂至今仍沿用以标准平晶与被检平晶接触,用观察干涉带弯曲的方法来检定平晶的平面性。这种检定方法容易使平晶表面出现光胶和堆积物的现象。解决的办法是: 1.光胶现象的解除由于标准平晶的重量或由于检定时施加的压力,使标准平晶与被检平晶发生光胶现象一被检平晶与标准平晶粘住无法分开。为了脱开光胶的平晶,可用酒精灯火焰烘烤平晶柱面(注意,应一边烘烤一边转动,时间不宜太长),使平晶间残留的空气和水受热膨胀,减弱表面分子间的吸力,直至出现细而多的干涉带时用两手便可拔开。
Flat crystal is currently used to test the factory flatness of some measuring instruments or parallelism of the main measuring tools. Due to the limited conditions, many factories still use the standard flat crystal to be inspected and the flat crystal to be inspected. The flatness of the flat crystal is checked by the method of observing the interference band. This test method is easy to make flat crystal surface light glue and accumulation phenomenon. The solution is: 1. The lifting of the phenomenon of light plastic flat crystal as the standard weight or due to the pressure applied to make the standard flat crystal and the flat was seized plastic glue phenomenon was seized flat crystal and flat crystal stick Can not be separated. In order to get rid of the glue flat, available alcohol lamp flame flattened cylindrical surface (note that the side should be roasted while rotating, the time should not be too long), the flat crystal residual air and water by the thermal expansion, weakening the intermolecular Of the suction, until there is more and more interference zone with both hands can be unplugged.