Hydraulic Die Forming Discussion Group

Re: How to make dies for medals

Hi Camille,
The coining limits for a 20 ton press is approx. 5/8" or dime size.
A 50 ton press is capable of coining approx. 1" and 150 tons would be needed to coin as much as a 2" piece.
These are all approximate figures, the variables of the metal properties and the detail level and depths of the die all have effects on the final tonnage needed for a particular project.
Do you already have coining dies? If not, you might want to research the techniques available for producing coining dies.
Conforming dies made out of liquid steel (Devcon) are not capable of the fine detail that is typical of medalions. However, lower pressures are used with conforming dies and you could end up with some acceptable results.
Check the archives, and if you haven't had a workshop on the topic I would certainly recommend attending one.
Phil

On Sat Dec 3 '05, camille wrote
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>I am interested in making art medals and medallions on the press. Size would be 1 1/4" - 3" in bronze and silver. Limited to editions of about 10-20 pieces. Some would be single sided, some would be double sided.
>I have a 20 ton tall press.
>Does anyone know if it would work to create a die out of liquid steel in a retaining ring? Or what method would work best?
>Then....would I use urethane to press it? Or do I need a male female die?
>I appreciate any info you can share.
>I am assuming I can do all of this in the press without having to invest in a coin press.

>Camille

Sun Dec 11 '05

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