HT Foil alternative for air hardening steel...

galadduin

galadduin

Joined
Dec 25, 2004
Messages
1,363
My HT SS foil will be over in weeks and I've imported it from Germany costing me about 60$ for 2 meter X 20 cm (80" X 8").... Also I wait to get it about 2 months :thumbdn::( ...

As I have electric kiln I have to have an insulator obviously. Do you have any alternatives to recommend? For example would a SS tube with screw-able lid be practical (I'm sure to open it at 1000 C will be problematic) ?

Maybe I have to gather some gadgets for home build salt bath construction...
 
They do sell a higher temperature version of the PCB anti scale powder.
 
jdm61 said:
They do sell a higher temperature version of the PCB anti scale powder.
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Sorry but I couldnt find any in my country. There is no material available in Turkey apart from industrial scales. Also most of the companies dont have websites etc. they only work for factories etc. They dont supply little quantities of SS foil etc... Today all day I've searched suppliers and companies, phoned them or mailed wit no success. It's frustrating...
 
Ok, what do you think about the solution I came up with?
I'll pick some scrap SS steel from junkyard and make some boxes or tubes, different sizes, one small face will be open. I'll put a groove or bump on the lip of the box. Tighten a SS foil with a wire, groove or bump will help to keep it airtight. That way I'll reduce the foil usage about 5 or 10 of times... Also it will be much more easy to get the blade out even from envelope. I'll just cut the wire and get the blade out...

I'll do it tomorrow run some tests... Any input is hugely welcomed....
Emre
 
Have someone from here mail it to you. What would be the problems. Customs or what. It is Less than $30 for 60" on a 24" roll here.
 
ib2v4u said:
Have someone from here mail it to you. What would be the problems. Customs or what. It is Less than $30 for 60" on a 24" roll here.
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Unfortunately customs may be costly here I don't know though. I'll try to learn tomorrow. By the way price is super for me :) Thanks for the idea :thumbup:. If I can get away with customs can you spend some time to send it? I'm ready to pay extra also for the effort. (I'll try the box method anyway burning alcohol inside then closing tight may also generate somewhat vacuum, O2 free environment. I know chances are slim but I like to experiment most, maybe thats why I bother with this hard hobby )
 
I've heard of problems from several folks dealing with the high-temp PCB. It might not replace foil all that well.
 
I have some that is a higher grade (309 stainless) and is 12 inches wide We could try some in an padded envelope to see how it goes. I do like your idea. What steel are you HTing btw.
 
I put a small amount of sawdust in the foil when I wrap up the blade, when it starts to smoke it eats up the oxygen. works for me, you could try it in the chamber.
 
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I have some that is a higher grade (309 stainless) and is 12 inches wide We could try some in an padded envelope to see how it goes. I do like your idea. What steel are you HTing btw.
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I use D2 and try to will try to use RN15X. We can eliminate that customs problem that way, maybe it is worth to try. Thank you so much. I'll let you know. I'll decide what to do after that experiment. At least I want to make these boxes and tubes today. Tomorrow I'll have results... If the results are positive I'll order the foil from that German company, that stock will be enough maybe for the rest of my life...

I put a small amount of sawdust in the foil when I wrap up the blade, when it starts to smoke it eats up the oxygen. works for me, you could try it in the chamber.
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Oh I its a good alternative rather than TP. I also saw from an article. Some HT companies are using iron filings or simple steel chips etc.. Oxygen prefer to bind to simpler steels most of the time so our high alloys dont rust there. Worth a try...
 
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Good luck and let us know how it goes. I love D2. With it and the 1850 you can use the 321 foil which is not quite as good or expensive as the 309. I did buy the 309 however. Good luck
 
Good luck and let us know how it goes. I love D2. With it and the 1850 you can use the 321 foil which is not quite as good or expensive as the 309. I did buy the 309 however. Good luck
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Thank you, I need it I guess. D2 is a shy steel, it needs some care to show its beauty. I buy foils from here: http://www.recordmetall.de/index2.htm. No info what is the material but it is quality as far as I know, no damage at 1050 C (1922 F).

I bought a ss (304 I guess) tube and plate. Lenght is 35 cm radius is 9 cm. it will have also ss stands and stoppers inside, to keep the blades rigid and spine up. The tube will have feet to stand still and a special fork to remove from kiln. I'll make also a rigid stand to put it after getting it out of the kiln.
Here is what I bought:
1ywjut.jpg


The plan is here:
x3sphe.jpg
 
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One simple question? Will annealing twice will hurt? My logic says no it wont but I want to be sure and I couldn't find an article about. There are some annealed steel lying around and I want to test the container by long heat exposures.
 
Annealing which, the blade steel or tube ? Long time exposure ,for the blade keep the temperature within the proper range .
 
mete said:
Annealing which, the blade steel or tube ? Long time exposure ,for the blade keep the temperature within the proper range .
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D2 for example. I have lots of them. I'll polish some and anneal (again). I want to be sure they don't oxidize. I anneal exactly the way producer's tech sheets suggest.


PS: Also I have ordered some ceramics glaze chemicals for mom, there is also a good amount of powdered quartz in the lot. I'll test these how it does as as a forge welding flux. Have anyone tested it. It doesn't damage steel when molten unlike borax as far as I know....
 
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