Re: temper- heating to to 'straw' color questions

Posted by markct on August 15, 2003 at 09:25:55 from (216.111.137.36):

In Reply to: temper- heating to to 'straw' color questions posted by davr on August 15, 2003 at 08:54:21:

well the 500 degrees you could do in your household oven,if your wife or mother isnt around, my mom wasnt too apreciative of the time i used he oven to temper a 3/4 drive extension i had made. but you can also do it by the color of the part, usualy the straw color is around 500 degrees. the way i always was taught to heat treat when i was in trade school was to heat it to a cherry red and then quench it in oil (for most steels, some you quench in water or even air cool) and then it would be very hard, and after that you would polish a small spot on it and heat the entire part till ya could see the spot turn the color you wanted, depending on the hardness, and yes you can quench it in used oil, or new oil if ya got money to spend. most any oil will work just keep your face clear in case it flames up, and dip it in fast and move it around in figure 8s to keep from forming a gas pocket around the part that would make it not cool as fast as it should.

Follow Ups:

• Re: Re: temper- heating to to 'straw' color questi Bill 52 8n 12:57:04 08/15/03 (1)
  • Re: Re: Re: temper- heating to to 'straw' color qu cr 13:06:38 08/15/03 (0)

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