Cold forming

[MBG]

What is cold forming? I heard of it but don't know what it is. Also what catagory would it fall under? Machining (probably not), forging, extruding casting?

[fyffe555]

http://www.textronfasteningsystems.c...processes.html

Google is your friend........

[nuplowboy]

A main example of cold forming would be most sheet metal parts. The bends or other shapes are made without heating the metal first. There is such a thing as cold forging, but typically, the term forging refers to heating up a billet prior to smacking it. I haven't looked at the forum categories closely enough to know for sure, so I can't say which cold forming fits in.

[Mcgyver]

forming stuff when its cold, ie stamping

[ViperTX]

Extruded casting....nope.....machining...nope......like everyone has said.....the stuff is cold and it's molded into shape......tool & die stamping.....etc.

Oh, just thought of it......extrusions are sometimes "worked cold".....depends on the mallability of the metal.....hmmmmm.....mallible.....something wrong with the spelling, I think.

[Geof]

What is cold forming?

Definition: A group of processes by which sheets or billets of thermoplastic materials are formed into three-dimensional shapes at room temperature by processes used in the metal working industry.

Cold forming is a manufacturing process whereas metal is shaped without removal of material, thus cold forming the component. A blank is placed within a die and a punch is pressed into the blank to cold form the part. The blank then takes on the form of the punch and the die.
The advantages of cold forming vs.machining from solid are:

Saving on raw material due to cold forming a shape
Reduced machining time on cold formed parts
Improved component properties result from cold forming

The saving on raw material as a result of cold forming can be very significant as is the saving in machining time. Improvements in component properties can also be gained from cold forming due to the grain structure of the material being elongated and forced to follow the contours of the part thus increasing its strength. Additionally, during cold forming the part undergoes work-hardening thus improving machinability.

Ain't Google wonderful; 45 seconds of copy and paste.

The correct spelling is malleability; from Answers.com