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Extrusion Mold

08/02/2007 10:21 AM

Hi,

I'm hoping someone can explain to me exactly how an extrusion mold works, in simple terms. I'd also like to know what a USE Billet is and how the size of it relates to the die size.

Thanks, I appreciate any help.

Lauren

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#1

Re: Extrusion Mold

08/02/2007 12:59 PM

In simple terms it's a hole in hard steel (or similar) that some material is pushed through.

Havn't you seen a Play-Doh fun factory here !

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#2

Re: Extrusion Mold

08/02/2007 3:46 PM

The result of a mould is seen on the previous thread.

Imagine a piece of metal with a similar hole in it. The material Aluminium/PVC/plastic is molten and forced through the hole and allowed to cool and set.

A billet is a piece of material (aluminium) to be used for melting and extrusion,

The volume of the billet limits the length of a section(s).

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#3
In reply to #2

Re: Extrusion Mold

08/02/2007 5:11 PM

Thanks for the reponses. Does anyone have a picture of an actual billet?

The kind of extrusion mold, I'm referring to is one for making stainless steel parts for furniture, but a picture of any kind would be greatly appreciated.

Many thanks,

Lauren

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#4
In reply to #3

Re: Extrusion Mold

08/02/2007 5:16 PM

Hmmm....Not sure that stainless steel will be easy to extrude...Aluminium alloy is more usual, and there are some good stong attractive alluminium alloys.

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#5
In reply to #4

Re: Extrusion Mold

08/02/2007 6:43 PM

ST/ST will extrude but needs plenty of pressure and heat! All depends how much you want to spend on the furniture!

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#6
In reply to #5

Re: Extrusion Mold

08/02/2007 11:58 PM

Wow! Stainless extrusions are cool enough, but extruded titanium too!? Way far out!

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#7

Re: Extrusion Mold

08/03/2007 1:35 AM

Note om extrusion moulds or dies:

With aluminium the mould will deteriorate over time it is suspected that it will go faster with stainless steel. It must be reflected in your costs.

An alternative is to consider anodised aluminium.

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#8

Re: Extrusion Mold

08/03/2007 3:40 AM

Are you talking about an injection mould?

An injection mould can be seen as a cavity formed by 2 or more moulds to the shape of the desired part. The molten material is then forced into the cavity and allowed to cool and set.

I am not familiar with the injection of St/St. The best known is casting aluminium-alloy in a sand filled mould and then machine the part to the desired tolerance.

The shrinkage of the cooling St/St must be provided for.

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#9
In reply to #8

Re: Extrusion Mold

10/07/2008 10:12 PM

The early bird catches the worm-but I am concerned about the early worm .

I prefer Man struggles upwards , water flows downwards.

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