Title: What is Cold Welding? - Welding Headquarters
Headings: What is Cold Welding?
What is Cold Welding?
How do we join metals without heat?
History of cold welding
Limitations of cold welding
Advantages of cold welding
No other metal welding option can weld together aluminum 2xxx and 7xxx material series.
Applications of cold welding
Is cold welding strong?
Summary
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Content: Almost all metals come with an additional surface oxide layer on the surface that acts as a barrier of sorts. The surface layer prevents the metals from being weld together just through the application of force or pressure. You cannot weld the two pieces together, because the surface oxide layer does not allow both the metals to diffuse atoms with each other. Cold welding takes this issue and the possibilities of pressure welding into perspective and prepares both these metal surfaces for what is to come. The preparation process is extensive and includes the cleaning and brushing of all metal surfaces, to an extent that the top-most layer of oxide is removed. Since the oxide isn’t present anymore, you are easily able to weld substances together through the use of pressure. No thermal energy is needed, and you can add a completely new definition to welding through cold welding. The cleaning and brushing process, however, requires thorough application without leaving any untouched bits on the surface. The process involves the de-greasing of all metal surfaces involved in the process. Once the de-greasing is done, you carefully wire brush the entire surface of the metals.