Wednesday, March 13, 2013

Questions. 14/03/13

What is an Alloy?

An alloy is a substance made by melting two or more elements together, at least one of them a metal. An alloy crystallizes upon cooling into a solid solution, mixture, or intermetalliccompound.

What is solder?

Solder is an alloy, which is a combination of two or more metals. It is heated to its melting point and used to join together other metals. The most common solder is called half-and-half, or "plumber's" solder, and is composed of equal parts of lead and tin. Other metals used in solder are aluminum, cadmium, zinc, nickel, gold, silver, palladium, bismuth, copper, and antimony.

What does the term "Tinning" refer to?

Tinning is a process of coating the two surfaces to be joined with a thin layer of solder to help the main mass of solder flow and melt into the joint.




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