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Normal Topic heat treating stainless steel blades (Read 632 times)
Von Gruff
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heat treating stainless steel blades
Apr 5th, 2018 at 9:03am
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So all ready to go on the 12C27 stainless steel kitchen blades now as the foil turned up this morning. I  will not be able to get to it till next week as there is a hunt organised among a few other obligations that will come first..

This is the set up I have in place now. I got a piece of 4x2 box and modified it by having it cut down to 3 3/4 in height to fit the forge opening, then welded a couple of supports to hold the probe toward the top of the box and clear of touching either the foil wrapped blade or the box itself.

The angle iron is a heat blocker, unbreakable and just as effective as a fire brick.



You can see the probe supports inside the muffer. The flange to the side and underneath makes sure there is no flame line towards my hands when putting a blade in or out of the muffler and also protects the rest of the probe covering past the insulators.



The angle iron also has a probe usability if I need to controll the heat when not using the muffler or without the probe in place it is a good heat blocker



  

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Von Gruff
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Posts: 458
Location: South Otago
Joined: Mar 8th, 2009
Gender: Male
Re: heat treating stainless steel blades
Reply #1 - Apr 8th, 2018 at 6:09pm
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Was supposed to be away hunting today but the property owner had to be away for the day so I will get a look at it later in the week when he is home again. I had the day in the shed instead and decided to make a pair of table knives. My wife prefers a shorter knife to me so made a his and hers set and got that ready to HT. With the  12C27 SS kitchen knife set powdered and foil wrapped, I fired up the forge and got them all heat treated. Was a simple thing to keep the heat controlled at the required 1960 degrees for the SS and 1560 for the 15N20 HC table knife set. You will notice a "spare" in with the kitchen set which was a first attempt at the large sicer that I got the bevels wrong on so I reshaped it into a general purpose knife.



  

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