Paleo Posted June 23, 2008 Share Posted June 23, 2008 I Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted June 23, 2008 Share Posted June 23, 2008 Did you just hold it in water at that spot or did you move it up and down in the water? If you just held it steady you may have a "water line break" issue. Else you may have an alloy that shouldn't be hardened in water "tool steel" is rather meaning less as there are hundreds if not thousands of tool steels out there, some harden in water, some in oil and some even harden in air! Quote Link to comment Share on other sites More sharing options...
S.Willis Posted June 23, 2008 Share Posted June 23, 2008 I agree with Thomas. It sounds like a quench line break. Quote Link to comment Share on other sites More sharing options...
Paleo Posted June 24, 2008 Author Share Posted June 24, 2008 Thomas, Thanks for the info on tip quenching,no I did not move it up and down. The "tool steel" I used was from a demolition air hammer's 4 foot chisel cut down. Do you think I should use water,oil for quenching? Thanks Paleo Quote Link to comment Share on other sites More sharing options...
Rich Hale Posted June 24, 2008 Share Posted June 24, 2008 I would use oil and it needs to be tempered afterwards as quenched will likely be wayy too hard.. Quote Link to comment Share on other sites More sharing options...
ThomasPowers Posted June 24, 2008 Share Posted June 24, 2008 Paleo, that still could be anything from 1050 to S7! With unknow steel you start with the gentlest quench and if that doesn't get hard enough you go harsher, Remember that you may have a decarb layer so when you check it with a file dig in a bit---I "sharpen" the tip a bit to not leave a notch but still get through any decarb. Even if it's the correct hardness you will probably want to draw a low temper on it to make it tougher. I'd try oil as a good general first guess (not the gentlest but the air hardening are usually high alloy top dollar metal and so not used a lot) Quote Link to comment Share on other sites More sharing options...
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