Can you use motor oil to quench a blade?
Motor oil is a common oil used in the hobby knife making industry.
Both used and new motor oil is used in this process.
Another disadvantage to motor oil is that it stinks during the quenching process.
This can be a problem if you are doing this in an enclosed area or in your basement..
Is it better to quench in oil or water?
Water-quenched steels will generally be harder than oil-quenched steels. This is mainly because the thermal conductivity of water is higher than the thermal conductivity of most oils (that I know); consequently, the rates of cooling will be less rapid (or lower) in oils compared with water.
What oil do you use to quench?
The two most common food grade oils used in this process are peanut and canola oil. Both of these oils have high flash points which is good for the quenching process. You will need to preheat these oils to slightly higher temperatures when compared to commercial quenching oils (120 – 130 degrees Fahrenheit).
What is quenching oil made of?
They are composed of base mineral or petroleum oils, and often contain polar lubricants like fats, vegetable oils, and esters, as well as extreme pressure additives such as chlorine, sulfur, and phosphorus. Straight oils provide the best lubrication and the poorest cooling characteristics among quenching fluids.
What kind of oil do you use to harden steel?
Mineral Oil Oil is a third traditional quenching agent, suitable for high-speed steels and oil-hardened steels, and in fact for any steel for which the required degree of hardness is achievable. Oil has a slower rate of cooling compared to either water or brine, but faster than air, making it an intermediate quench.
Can you quench steel in vegetable oil?
Quenching Oil. Vegetable oil, olive oil, peanut oil, motor oil, used motor oil, etc. It will all work. You do not want to use water, however. It is too harsh and will crack most steels.