Heat treating Simple carbon steel in a forge
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- čas přidán 7. 09. 2024
- This video shows a basic procedure for heat treating simple carbon steel in a propane.
1.) Run the forge with a propane rich flame around 800-900 degrees
2.) Normalise the steel by bringing it up to 870 and cool in still air
3.) Retun the steel to the forge once cooled
4.) Bring to 815 degrees and check with a magnet, once it has lost it's magnetism you can quench into oil until warm to touch
5.) Grind the surface of the steel at the edge so you can test a clean surface with a file. If it is glassy and will not cut the blade is hard enough.
6.) Temper in the oven twice for two hours on 200 degrees letting it air cool in between.
www.artisansup...
www.artisansup...
Great video! Thank you. I've been working on heat treating and tempering myself. The last knives I did, however, didn't seem to get hard, as when I tested with a file, it didn't slide nicely over the blade as it does in your video. I'll get a magnet and try again. Thanks a lot!
Hey I've been using 1084 and quenching in warm canola oil which seems to work well. Would there be much difference in using houghtons quench oil and would a fast or medium oil be better for 1084
You will get far more consistent results with the engineered quenchants like houghtons, especially when you branch out into more complicated steels. For 1084 canola will work very well. The advantage of houghtons is that the oil does not degrade and it has a resistance to allowing a vapor jacket around the hot steel in the initial quench. You want to use Houghtons G for 1084 and most other blade steels. Houghtons K should only be used on fast quench steels like W2, W1, thick sections of 1095. Medium speed quench steels in fast quench medium will probably crack and fail.
Bat Country Forge I just received my houghtons g from gameco and just wanted to know if there is an ideal temp to get it to or does it just need to be warmed up a bit? Should i treat it the same as when using canola oil. Im in New Zealand and it's a bit cold over here at the moment.
Depends on the temperature where you are. I am in Sydney and I don't find I ever need to heat up the oil. The best way to know is to do some controlled experiments and get the results Rockwell tested. Try and use it at around 25-30 degrees, consistency in what you do is key to getting repeatable results.
I did some reading and the only thing I can find on it is that the G quench oil as a whole is effective upto 82 degrees, it would take a lot of steel to get that 20L upto 82 degrees.
Vegetable oil on the other hand I used to warm up to about 30 degrees.
Ok cool, thanks for your help.
is the quench oil heated up or room temperature?
Adam Beck hi mate, this time of year I find the oil is just fine at room temperature for 1075 steel. In winter I would warm it up a little with some hot mild steel.
nice video, and your choice of name is hilarious
Can you tell me what kind of oil to use, can I use old motor oil?
Don't use old motor oil. If you have a oil hardening steel try with vegetable oil. If you don't know what type of steel you have give it a go in vegetable oil first and see what happens.
@@batcountryforge5945 I have a piece of spring steel .. From the truck
Thank you for your reply!
@@johanesgo8096 Veg oil should be pretty safe for that, assuming no cracks from fatigue from it's working life as a truck spring. Depending on the size of the knife you need a good amount of oil, I'd say 10 liters minimum if it is up to 30cm long. More length will require more oil.
@@batcountryforge5945 Thanks for the advice, great greeting from bosnia and herzegovina