[TheForge] Trenton ID

Wed Apr 7 07:03:00 2004

Is there an advantage to preheating to 500? I have no idea, just hadn't 
heard of doing this before.

Steve

Andy Vida wrote:

> 
> Steve Smith wrote:
> 
>>Too much preheat can cause problems. You can take the hardness out of
>>parts of the face you aren't working on if you heat too high.
>>
>>I use 300F for preheat; 500 sounds pretty high. As you weld, the temp
>>will probably go up from your preheat. If you get too high, you will
>>lose your temper. :)
> 
> 
> 	That's what I thought, but last month they were taking them
> 	to about 500 and the faces seemed to have held their hardness.
> 	I was surprised because prior times we held to 300-350.
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