Luis Vernabe Posted July 25, 2018 Share Posted July 25, 2018 Hi, I just started forging mostly knifes, what is the best oil to quench? Any help will be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
BIGGUNDOCTOR Posted July 25, 2018 Share Posted July 25, 2018 Skip on over to the knife making, and heat treating sections, and start reading. Check the pinned posts Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted July 25, 2018 Share Posted July 25, 2018 Depends on the alloy to be quenched. I generally use parks 50 for alloys requiring a fast quench or warmed canola oil for alloys requiring a slower quench or just air for alloys with the slowest quench rate needed. Question is a lot like "what fuel should I use in my vehicle?" Gasoline, diesel, aviation gasoline, LOX and Hydrogen, alcohol,....depends on the vehicle... Quote Link to comment Share on other sites More sharing options...
Frosty Posted July 25, 2018 Share Posted July 25, 2018 I like nitro methane powered cars. I like snappy response you know. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted July 25, 2018 Share Posted July 25, 2018 When it comes to horsepower I still stand (a goodly distance away) by the Saturn 5. Most Impressive when it takes off! (I was closer for the Apollo 11 launch than the VIP bleachers on the cape---Titusville Holiday Inn parking lot, right across the inlet from the launch pad...) Quote Link to comment Share on other sites More sharing options...
Luis Vernabe Posted July 25, 2018 Author Share Posted July 25, 2018 Hi, I am new and was wondering what type of oil would best for queching a blade. Any help will be appreciated. Quote Link to comment Share on other sites More sharing options...
Buzzkill Posted July 25, 2018 Share Posted July 25, 2018 There is no universal "best" quench medium. It depends largely on the alloy of steel used for the blade. If you have new steel then the manufacturer should have heat treating specifications for the steel, which will include the temperature the steel should be at for quenching and the quenching medium required. Some steels do use oil, others will not harden in oil, but will harden in water, and others will harden simply by being cooled in the air. For simple carbon steels most oils will work. Canola oil, peanut oil, or vegetable oil warmed up to around 130-140 degrees F are reasonably good choices. However, what is best depends on what is most important to you. If the oil cost $150 US per gallon would you still be interested? There are oils specifically designed for quenching, but again whether they are "best" depends on the specific alloy to be quenched. Quote Link to comment Share on other sites More sharing options...
Steve Sells Posted July 25, 2018 Share Posted July 25, 2018 If you read the pinned post you might know that it is dependant on the steel. so no one can answer, in the mean time, read a bit Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted July 25, 2018 Share Posted July 25, 2018 Didn't we answer this already in your other post: Best quenching oil Luis Vernabe posted a topic in Induction Heating, Oil forges, etc Quote Link to comment Share on other sites More sharing options...
Strike Posted September 24, 2018 Share Posted September 24, 2018 frosty My dog used to play with pure nitromethane derived from RC race car fuel. Hit it with water to separate the oil, filter it off. Distill the methanol/nitromethane under a chemical vacuum (pulls 0 torr) and beware it's explosive nature, if I remember correctly, it autoignites at 101C and boils at 100C at STP (standard temperature and pressure). Now your cars will go much faster. Or so I read in a patent somewhere... btw what's a 'pinned' post please? Quote Link to comment Share on other sites More sharing options...
JHCC Posted September 24, 2018 Share Posted September 24, 2018 A pinned post is one that has been set to always appear at the top of a section in the forum. Quote Link to comment Share on other sites More sharing options...
JHCC Posted September 24, 2018 Share Posted September 24, 2018 For example, “Intro to Heat Treating” has been pinned to always show up first in the Heat Treatment section Quote Link to comment Share on other sites More sharing options...
Strike Posted September 25, 2018 Share Posted September 25, 2018 Thanks JHCC. Makes perfect sense now; still getting used to this site. Quote Link to comment Share on other sites More sharing options...
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