更换张丝的关键是张丝的焊接,具体作法如下:首先从磁路系统中取出可动部分,再取下已损坏的张丝,重新焊上相同规格的张丝备件。若不知张丝的规格,则应截取已损坏的部分张丝,在投影放大仪上测出其宽度,用千分尺测置厚度,根据所测宽度和厚度,选配相同 The key to change the wire is to weld the wire, as follows: First remove the movable part from the magnetic circuit system, then remove the damaged wire and re-weld the wire with the same specifications. If you do not know the specifications of the silk, you should intercept the damaged part of the wire, measured in the projection magnifier width, thickness measured with a micrometer, according to the measured width and thickness, matching the same