Cold welding uses pressure applied to the workpieces in dies or rolls. It is important that both surfaces are mutually soluble, that intermetallic compounds do not weaken the joint. When pressure is applied through rolls the process is called roll bonding. This is the technique used to manufacture the U.S. quarter. Here two outer layers of 75% copper-25% nickel are bonded to an inner layer of pure copper. To obtain the desired bond strength, the mating surfaces are chemically cleaned and wire-brushed a common requirement.
And Furthermore . . .
Diffusion Bonding
Explosive Welding Forge Welding
Friction Welding
Ultrasonic Welding
[
展开]
[
关闭]
我来回答
0861788249
0861803284
