Friction welding

A method of welding in which the surfaces to be joined of the two thermoplastic articles to be butted are rotated in contact with each other to cause frictional heat generation in succession, and the joint faces are melted by heat so as to be integrated under pressure. Friction welding is a welding method in which the surfaces to be joined of two thermoplastic articles to be butted are rotated in contact with each other to cause frictional heat generation in succession, and the joint faces are melted by heat so as to be integrated under pressure.

Friction welding can be used not only for the welding of plastic products, but also for the welding of different surfaces such as steel-steel, steel-aluminum, copper-aluminum, etc., which are difficult to achieve by ordinary welding. Friction welding is fast, requiring only a few seconds per workpiece, while conventional welding requires several times. Moreover, friction welding does not produce electrical welding fume and manganese, nickel and other occupational hazards that are harmful to the human body. The strength of friction welding is also very large, sometimes even greater than the strength of the material itself, that is, when the external force is pulled hard, the first thing that breaks is the material itself that is not welded, not the weld.
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