扩口：扩口是将空心件或管状件敞开处向外扩张的一种冲压工序。
球阀线程，插焊，焊点，槽和扩口端。
Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends.
用途：适用于电机嵌线后线圈两头的扩口整形的专用设备。
Usage: special equipment for coil two ends expanding and shaping after motor coil embedded.
接着通过管道螺母将扩口端拔出使其内部表面与管件球座紧密结合。
The flared end is then drawn up by the tube nut so the inside surface is tightly secured against the ball seat of the fitting.
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