What Is The Scientific Principle?

Question

Impact Extrusion is a process where impact is used to turn a metalic material into liquid so it can flow and fill a molud.
what i want to know is that what is the Scientific Principle that causes the solid to turn into a liquid as a result of the impact?
Please Reference your information (I.e - Websites)

Answer 1

Log onto the www.eng-tips.com website. You may have to register, but it is worth it if you have questions like this on a regular basis.

Absolutely always have an answer for every single mad engineering question I have ever asked.

http://www.ashfield-extrusion.co.uk/process.html
http://www.coldformedproducts.co.uk/
http://www.kurt.com/impact_extrusion_advantages.htm
http://www.neumanusa.com/impactprocess.htm

From what I can see, the process is liquid to solid, not solid to liquid!

Answer 2

Impact extrusion only works well on soft metals like aluminum and tin (although I've heard it has been tried with iron), and doesn't generate heat (per above suggestion) as a means to the end result ... the process is one of "cold flow" extrusion. The metals that can be used in this process are simply soft enough (ductile enough) to be reshaped in the extruder without facturing.

A slug of the material is jammed into the extruder head at high pressure by a mechanical ram.

The scientific principle is no more complicated than any other cold flow extrusion process, including making spaghetti. If the material is ductile enough, putting enough of a squeeze on it through the extruder is all it takes.

That's how they extrude toothpaste tubes, BTW.

Answer 3

Scientific principles are drawn from the laws of logic (google that). An example of a scientific principle is independent verifiability. The law of non contradiction would suggest that something is more valid if two separate people are able to look at the same evidence and draw the same conclusion. These principles are commonly referred to as the scientific method.

Answer 4

Look at sintered metal manufacturing on the net as well

powdered metal formed at high pressure into solid & then heat treated to gain strength or hardness.....


SINTERING

A process of forming objects from a
metal powder by heating the powder at a
temperature below its melting point.
Through chemical or mechanical procedures a fine
powder of the metal can be produced. When the
powder is compacted into the desired shape and
heated, i.e., sintered, for up to three hours, the
particles composing the powder join together
- micro weld - to form a single densified part.

Answer 5

I think there are several principles that must be followed in Scientific Work. They are not identical i all sciences either.

In mathematics you have all the theorems that shall be followed. Anything must be prooved once in the different branches of math.
The prooves might be axiomatic, induktive or might be hyphotetic deduktive.
You must study pholosophy and logic to learn moore of the basic thinking in science.

Answer 6

My guess would be that at the point of impact, the large amount of kinetic energy that was causing the metal to move fast would have to go somewhere (conservation of energy and all that). What happens is that it becomes heat and melts the metal.

I don't have any references though.