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1987～1989年内白俄罗斯铁路机务部门的一些企业引进了新的无损检查设备,超声波、涡流探伤仪和渗透探伤仪整套装置。这类通用设备的特点在于:在大多数情况下需要制订出检查方法,以及为某些具体零件的探伤仪制备专门的变换器。例如,普遍使用的 2-12超声波探伤仪只有直接变换器(0°)和棱形变换器(30°,40°和64°),它们只能用于检查简单零件。为了检查较复杂的零件,就得制作
From 1987 to 1989, a number of companies in the Belarusian railway maintenance department introduced new nondestructive inspection equipment, ultrasonic, eddy current flaw detectors and complete sets of penetrant flaw detectors. A common feature of these general purpose devices is that in most cases, a test method needs to be developed and special transducers are to be prepared for the flaw detector of some specific parts. For example, the commonly used 2-12 ultrasonic flaw detector only has a direct transducer (0 °) and a prismatic transducer (30 °, 40 ° and 64 °) which can only be used to inspect simple parts. In order to check the more complex parts, you have to make