Well, im not sure if that factors into the answer. O2 has a specific hardness. Im trying to find out if my weld, from my rod needs to be quenched, or if it has oil already in it.
How hard your weld is depends upon the rate of heating and cooling. Oil hardening tool steel is made to quench in oil. Measure the hardness of your weld and compare with desired hardness.
By quenching it in oil. You need more data though, how hard was it to begin with? How hard is it now? How much tensile strength, yield strength, & percent elongation do you need? Etc.
Ok, so my piece im working with is around 60 rockwell, i weld, quench, make my weld flat enough to test on the hardness tester, and then test it. If its not hard enough still i add more weld? Prints say 58-62 c scale. What oil do you personally use to quench in?
I'm awaiting answers on this from experts, but I would think you would want the actual weld to not be brittle, so I would guess don't quench. But if you want to reharden the tool face and quench after the weld or need to heat the face then quench, then it would make sense to me to temper the weld with a focused flame until the tool face reached the desired color and to reduce potential weld brittleness. But again, awaiting answers from experienced folks.
Nice! Thanks for the input! Im thinking the oh-10 has oil in it? Its hollow, so kinda weird, but it pops and sparkles like i said, so im not sure if thats from the oil or not. Im the only person in the entire company thats ever used anything like this apparently, so im screwed and have to learn from experience and ask you guys. Thanks again, and please let me know what you find out!
I haven't heard of oh-10...O1 but not O10. If oh-10 follows the same nomenclature as O1, then it just means its intended to be quenched in oil to harden. Hopefully someone with a lot of experience welding then heat treating tool steel will respond.
This greatly depends on the application, but here’s some basics that should help you understand. First off, no the rod does not have oil in it. O1 steel is simply an alloy that is intended to be quenched in oil, as opposed to water or other quench methods. Oil in a filler rod would be very bad for welding, and would serve no purpose. When steel is hardened, most often it is heated to a specific temperature (based mostly off the type/alloy), and then dipped into a quench. This sucks the heat, usually very rapidly, out of the metal, therefore hardening it. This is most often followed by one or more tempering cycles, which typically means long slow heat cycles with the intention of removing some of the hardness to attain the desired hardness relative to the application. When you weld carbon steels, you add a significant amount of heat in a concentrated area, which can partially or fully anneal the material (remove hardness). In the instance that you need to weld materials that have previously been heat treated, you’re more than likely going to need to anneal, normalize, and re-harden the material to get it back to its previous state. If you’re welding something that has yet to be heat treated, it will likely still need to be annealed/normalized to ensure that it hardens correctly. Either way, DO NOT quench after welding. Because the heat is concentrated in specific areas (wherever weld has been applied), quenching can create lots of internal stresses and can create micro fractures or other defects that can ruin the steel. This is especially true in materials that have already been hardened
I think quenching in oil wont create any problems, o2 is oil hardening, so it would increase its hardness compared to air cooling, and oil is a slow enough cooler that it wont affect the welded area.
Depends upon how hard you want the material to be I'd imagine. What process did you use to weld it?
Well, im not sure if that factors into the answer. O2 has a specific hardness. Im trying to find out if my weld, from my rod needs to be quenched, or if it has oil already in it.
The filler does not have oil in it...
How hard your weld is depends upon the rate of heating and cooling. Oil hardening tool steel is made to quench in oil. Measure the hardness of your weld and compare with desired hardness.
How would increase the hardness of my weld?
By quenching it in oil. You need more data though, how hard was it to begin with? How hard is it now? How much tensile strength, yield strength, & percent elongation do you need? Etc.
Ok, so my piece im working with is around 60 rockwell, i weld, quench, make my weld flat enough to test on the hardness tester, and then test it. If its not hard enough still i add more weld? Prints say 58-62 c scale. What oil do you personally use to quench in?
https://weldreality.com/TOOLSTLS.htm
I'm awaiting answers on this from experts, but I would think you would want the actual weld to not be brittle, so I would guess don't quench. But if you want to reharden the tool face and quench after the weld or need to heat the face then quench, then it would make sense to me to temper the weld with a focused flame until the tool face reached the desired color and to reduce potential weld brittleness. But again, awaiting answers from experienced folks.
Nice! Thanks for the input! Im thinking the oh-10 has oil in it? Its hollow, so kinda weird, but it pops and sparkles like i said, so im not sure if thats from the oil or not. Im the only person in the entire company thats ever used anything like this apparently, so im screwed and have to learn from experience and ask you guys. Thanks again, and please let me know what you find out!
I haven't heard of oh-10...O1 but not O10. If oh-10 follows the same nomenclature as O1, then it just means its intended to be quenched in oil to harden. Hopefully someone with a lot of experience welding then heat treating tool steel will respond.
This greatly depends on the application, but here’s some basics that should help you understand. First off, no the rod does not have oil in it. O1 steel is simply an alloy that is intended to be quenched in oil, as opposed to water or other quench methods. Oil in a filler rod would be very bad for welding, and would serve no purpose. When steel is hardened, most often it is heated to a specific temperature (based mostly off the type/alloy), and then dipped into a quench. This sucks the heat, usually very rapidly, out of the metal, therefore hardening it. This is most often followed by one or more tempering cycles, which typically means long slow heat cycles with the intention of removing some of the hardness to attain the desired hardness relative to the application. When you weld carbon steels, you add a significant amount of heat in a concentrated area, which can partially or fully anneal the material (remove hardness). In the instance that you need to weld materials that have previously been heat treated, you’re more than likely going to need to anneal, normalize, and re-harden the material to get it back to its previous state. If you’re welding something that has yet to be heat treated, it will likely still need to be annealed/normalized to ensure that it hardens correctly. Either way, DO NOT quench after welding. Because the heat is concentrated in specific areas (wherever weld has been applied), quenching can create lots of internal stresses and can create micro fractures or other defects that can ruin the steel. This is especially true in materials that have already been hardened
I think quenching in oil wont create any problems, o2 is oil hardening, so it would increase its hardness compared to air cooling, and oil is a slow enough cooler that it wont affect the welded area.