The old oil should work just fine, filter if concerned. Found 30W(approx.) a little heavy for hardening, oil harden steel does not get file hard. Thin the oil about 30% with kerosene or paint thinner. Keep in a covered can to stop evaporation and put out the fire if required.
Best oil for hardening steel" Keyword Found Websites Hardening steel with motor oil is a way of performing what is called the case hardening of steel Pure steel is actually too soft for many applications In order to put a hard layer on the steel , carbon must be fused at the molecular level into the top centimeter or so of the steel
To case harden a part, the finished low-carbon steel part is heated, and then packed with a high-carbon compound, like Rose Mill's Cherry Red instant hardening compound. The theory is this:When low-carbon steel reaches a certain temperature, the carbon in the piece becomes more fluid.
How do you heat 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.
How to Blacken Steel With Motor Oil (with Pictures Step 1:Prepare Metal. Using acetone and a clean rag, wipe off excess oil, rust, etc off of your metal parts. You might also use steel wool or a scotch brite if you need a little more abrasion. This would probably have been a good time to be wearing gloves.
Click to view10:00Jan 20, 2011 · 1. Fill a heat-safe container with water or oil deep enough to submerge your steel. Use a coffee can or similarly shaped container as your quenching chamber. Pour in water or vegetable oil so its 23 inches (5.17.6 cm)
Why Nanoquenchants, Oil Mist, and Vegetable Oil are
Liquid QuenchingAdvantages of Newer QuenchantsSources and Further ReadingHOW TO HARDEN YOUR CHISELS!!!HemeolaMan-> HOW TO HARDEN YOUR CHISELS!!! (Feb. 22 2008 12:33:28) k guys, i did a little looking around an old school method for hardening steel and increasing carbon content:heat up the metal til its red hot, then quench it in USED motor oil. used oil has a great deal of carbon which is absorbed by the metal as it cools.
sciencing CouponsApr 13, 2021 · How to Harden Steel With Motor Oil Sciencing. COUPON (0 seconds ago) Hardening steel with motor oil is a way of performing what is called the case hardening of steel. Pure steel is actually too soft for many applications. In order to put a hard layer on the steel, carbon must be fused at the molecular level into the top centimeter or so of the steel.
Using your blow torch or a furnace with a bellows, heat your steel until it glows red-hot. You will need to watch your steel carefully as it goes through several different color changes until it passes blue-hot and finally becomes red-hot. Using your tongs, pick up the red-hot steel and immediately dunk it into a vat of room-temperature water.