cold working?

Question

what are the affect of cold working on metals.

Answer 1

huh?

Answer 2

Cold working means forming the metal at temperatures below their recrystallisation teperature.Thus for example lead metal cannot be cold worked at temperatures above 20degC because it will self anneal.In general terms cold working improves surface finish,increases hardness,and in the case of cold rolling can impart desired (sometimes undesired)
crystal textures which have critical importance in transformer steels and the steels which are to be deepdrawn into the complex shapes needed in the manufacture of cars, household goods.etc.

Answer 3

It makes them harder and stronger, but more brittle.
BTW, cold working means deforming a metal (stretching, flattening, etc) without heating it. Drawing a wire from a larger diameter rod by forcing it through an orifice under great pressure near room temperature is a common example.

Answer 4

In general metals contract on cooling. If cooled enough some like mercury may become superconductor of course first it will solidify.

Answer 5

affect and effect are two different words with different meanings.

Cold metals are less malleable and harder to work.