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34LikesThread: Home-made furnace for hardening
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05-16-2013, 04:50 AM #1Senior Member
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Home-made furnace for hardening
Hi gents!
I decided to make a muffle furnace
I read the forums, made calculations, collected materials.
For hardening of knives and razor blades to me more than enough
Internal Dimensions: Diameter - 50 mm, length - 280 mm. The design temperature up to 1000 degrees. Celsius.
Automatic first made on thyristors, but for some reason he was burned in the tests, and I remade by a magnetic switch. It seems as long as everything works. Will soon begin full operation, except the furnace should be much more.
Last edited by GVIkzn; 05-16-2013 at 04:53 AM.
If something is unclear in the text, please correct me ......
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The Following 2 Users Say Thank You to GVIkzn For This Useful Post:
ScottGoodman (05-17-2013), spazola (05-16-2013)
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05-16-2013, 04:57 AM #2
Cool. What materials did you use?
Til shade is gone, til water is gone, Into the shadow with teeth bared, screaming defiance with the last breath.
To spit in Sightblinder’s eye on the Last Day
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05-16-2013, 05:03 AM #3Senior Member
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The base of the big old electrical fuse
Heater - nichrome wire 1 mm.
Plastering - chamotte clay to 1600 C
Winding - asbestos cloth.
Thermal insulation - basalt wool
The rest can be seen in the photoSubstance likes this.If something is unclear in the text, please correct me ......
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05-16-2013, 05:50 AM #4
Can you still get Asbestos cloth in Russia?
Substance likes this.Til shade is gone, til water is gone, Into the shadow with teeth bared, screaming defiance with the last breath.
To spit in Sightblinder’s eye on the Last Day
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05-16-2013, 06:04 AM #5Senior Member
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Do not quite understand your question.
Asbestos we can buyStozzberry and Substance like this.If something is unclear in the text, please correct me ......
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05-16-2013, 08:12 AM #6Senior Member
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That looks fantastic mate
....Thanks for sharing with us !!
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05-16-2013, 11:01 AM #7Senior Member
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How nice, ... more info as you go please :-D
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05-16-2013, 12:08 PM #8
Asbestos is highly carcinogenic (asbestos particles cause lung cancer), and is not sold anymore in many Western European countries.
Originally Posted by GVIkzn
Last edited by Bruno; 05-16-2013 at 12:10 PM.
Til shade is gone, til water is gone, Into the shadow with teeth bared, screaming defiance with the last breath.
To spit in Sightblinder’s eye on the Last Day
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05-16-2013, 01:06 PM #9Senior Member
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That is the coolest thing I have seen in a while. Thank you for posting the pictures. It looks like a great design and build.
Charlie
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The Following User Says Thank You to spazola For This Useful Post:
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05-16-2013, 01:22 PM #10Senior Member
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I know Originally Posted by Bruno
Therefore, with the open side of all asbestos I smeared with chamotte clay.
If there are cracks, they also glossed over.
You have a very large selection of thermal insulation, you can do without asbestos. I used what I had.Neil Miller likes this.If something is unclear in the text, please correct me ......
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