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太钢七轧厂共有六台西德F.H公司(FRIESEKE & HOEPFNER)生产的FH-46型测厚仪,它们都是双射源,双量程、单探头的测厚仪。每个射源室内均安装有两个同位素源。在源室内除安装有源及源的切换机构外,还有校正板及其切换机构等,内部机构相当复杂。 七轧厂从七○年试生产以来,由于众所周知的原因,测厚仪经常出故障,一直不太正常。例如,过去测厚仪C形架的驱动气缸失灵后,操作人员往往用一个大铁钩,钩住射源窗口或电离室窗口往外拖,这样经常把射源窗口或电离室窗口捅坏,使测厚仪不能工作,另外由于气源质量不好,杂质太
There are a total of six FH-46 thickness gauges from FRIESEKE & HOEPFNER, which are dual source, dual range and single probe gages. Two isotope sources are installed in each source chamber. In the source room in addition to the installation of the source and the source of the switching mechanism, there are calibration plate and its switching mechanism, the internal mechanism is quite complicated. Since the seven-mill trial production in 1970, it has not been normal for gauge gages to fail frequently for some well-known reasons. For example, in the past, when the driving cylinder of the C-frame of the gage failed, the operator often used a large iron hook to hook the source window or the ionization chamber window to drag it out so that the source window or the ionization chamber window was often stabbed so that Thickness gauge can not work, in addition to poor gas quality, impurities too