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heat staking a urethane casting

heat staking a urethane casting

heat staking a urethane casting

(OP)
I'm getting conflicting information on the feasibility of heat staking a urethane casting.

One guy says he's done it.

Another guy says because is it's a urethane (made by blending isocyanate and polyol), it won't melt the way thermoplastics do, thus heat staking won't work.

So I'm tossing it up to the eng-tips braintrust... any thoughts?

Chris Loughnane - Product Design

http://www.pdnotebook.com
http://www.twitter.com/DesignNotebook
 

RE: heat staking a urethane casting

There are thermoplastic and thermoset urethanes. The term casting, and the isocyanate-polyol reaction, implies that it is a thermoset and therefore staking will not work.  

RE: heat staking a urethane casting

I agree with Compositepro.  Thermoplastic urethanes such as Elastollan from BASF can be heat staked, but "cast" urethanes based on isocyanate-polyol reaction cannot.

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