Induction Annealing

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Shooter1971

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I've been wanting to build an induction type annealing machine on the cheap for a while. Might try this unit out and piece together one, fits the cheap bill and I think enough power. I'm thinking press mounted with a proximity switch to a delay relay circuit to control the heating time automatically

http://www.banggood.com/Low-ZVS-12-...duction-Heating-Machine-Module-p-1038472.html

http://www.ebay.ca/itm/Mean-Well-MW...348062?hash=item56839ddb5e:g:uNoAAMXQtRxSIZmc

http://www.ebay.ca/itm/DC-12V-Multi...222133?hash=item3f51f92535:g:1-UAAOSwG-1Wym~A

http://www.ebay.ca/itm/LJ12A3-4-Z-B...2133&clkid=4452030938499449287&_qi=RTM2247626
 
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Shooter1971 said:
I've been wanting to build an induction type annealing machine on the cheap for a while. Might try this unit out and piece together one, fits the cheap bill and I think enough power. I'm thinking press mounted with a proximity switch to a delay relay circuit to control the heating time automatically

http://www.banggood.com/Low-ZVS-12-...duction-Heating-Machine-Module-p-1038472.html

http://www.ebay.ca/itm/Mean-Well-MW...348062?hash=item56839ddb5e:g:uNoAAMXQtRxSIZmc

http://www.ebay.ca/itm/DC-12V-Multi...222133?hash=item3f51f92535:g:1-UAAOSwG-1Wym~A
Click to expand...

One itsy-bitsy little problem is that it won't work with brass, only ferrous metals. Due to my recent firearms purchases, we now have a brand new stove with an induction cook top which does not work with some rather expensive copper bottom pots and frying pans. Or el-cheapo aluminium ones either.
 
dirtybarry said:
One itsy-bitsy little problem is that it won't work with brass, only ferrous metals. Due to my recent firearms purchases, we now have a brand new stove with an induction cook top which does not work with some rather expensive copper bottom pots and frying pans. Or el-cheapo aluminium ones either.
Click to expand...

you might want to research that...;)

 
dirtybarry said:
One itsy-bitsy little problem is that it won't work with brass, only ferrous metals. Due to my recent firearms purchases, we now have a brand new stove with an induction cook top which does not work with some rather expensive copper bottom pots and frying pans. Or el-cheapo aluminium ones either.
Click to expand...

Really?

 
Shooter1971 said:
I've been wanting to build an induction type annealing machine on the cheap for a while. Might try this unit out and piece together one, fits the cheap bill and I think enough power. I'm thinking press mounted with a proximity switch to a delay relay circuit to control the heating time automatically

http://www.banggood.com/Low-ZVS-12-...duction-Heating-Machine-Module-p-1038472.html

http://www.ebay.ca/itm/Mean-Well-MW...348062?hash=item56839ddb5e:g:uNoAAMXQtRxSIZmc

http://www.ebay.ca/itm/DC-12V-Multi...222133?hash=item3f51f92535:g:1-UAAOSwG-1Wym~A

http://www.ebay.ca/itm/LJ12A3-4-Z-B...2133&clkid=4452030938499449287&_qi=RTM2247626
Click to expand...

If you decide to go ahead with the build - PLEASE KEEP US UPDATED!!!
 
Shooter1971 said:
I've been wanting to build an induction type annealing machine on the cheap for a while. Might try this unit out and piece together one, fits the cheap bill and I think enough power. I'm thinking press mounted with a proximity switch to a delay relay circuit to control the heating time automatically

http://www.banggood.com/Low-ZVS-12-...duction-Heating-Machine-Module-p-1038472.html

http://www.ebay.ca/itm/Mean-Well-MW...348062?hash=item56839ddb5e:g:uNoAAMXQtRxSIZmc

http://www.ebay.ca/itm/DC-12V-Multi...222133?hash=item3f51f92535:g:1-UAAOSwG-1Wym~A

http://www.ebay.ca/itm/LJ12A3-4-Z-B...2133&clkid=4452030938499449287&_qi=RTM2247626
Click to expand...

I think you'd have some buyers in Canada if you could make one work....
 
+1 to def. want to make a DIY for a while but too lazy to research parts. Please keep us up to date on progress. A $160CAD DIY annealer would be sweet.
Shooter1971 said:
I've been wanting to build an induction type annealing machine on the cheap for a while. Might try this unit out and piece together one, fits the cheap bill and I think enough power. I'm thinking press mounted with a proximity switch to a delay relay circuit to control the heating time automatically

...
Click to expand...
 
Beater said:
m I missing something here? are you not supposed to water drop them quick cool to aneal them? I didn't think air cooling would work right
Click to expand...

Depends on what you want. The heating process "repairs" the many tiny dislocations which occur among the grains of the metal during the cold working (sizing in the die). The speed at which the metal is cooled afterwards affects the size and uniformity of grains which reform. To cool slowly allows for more uniform grain formation... I'd imagine uniformity should be chosen when given the opportunity... but it probably doesn't make much of a difference.

But yes, when annealing is done with a slow cool down it is referred to as "normalizing".
 
dropping steel when hot in water will harden it, if its hot enough. dropping brass in water when its hot will softern it. I allways drop in water to prevent the heat from traveling to the head don't want that softened
 
If you use Tempilaq, [or an equivalent] you should have no issues with overheating the body/head of the case.

Even without, you can easily see the color change in the neck/shoulder area and it should not extend into the body very far if done correctly.
For example, when doing 308 Norma Mag cases, the color extends down about 4-5mm from the shoulder of the case when done correctly.

At that point, you can still hold the head of the case in your fingers for a few seconds after the case is removed from the flame. I do not quench in water.

Regards, Dave
 
Beater said:
dropping steel when hot in water will harden it, if its hot enough. dropping brass in water when its hot will softern it. I allways drop in water to prevent the heat from traveling to the head don't want that softened
Click to expand...

It's not the water, or the flash cool, that softens the brass. It's the heat.

You're point about protecting the rest of the case is a good one though. Never thought of that.

I have an annealer that holds the case in a thick aluminum slot, so the Al serves as a heat sink to protect the body and base of the case.

Food for thought.....
 
Shooter1971 said:
I've been wanting to build an induction type annealing machine on the cheap for a while. Might try this unit out and piece together one, fits the cheap bill and I think enough power. I'm thinking press mounted with a proximity switch to a delay relay circuit to control the heating time automatically

http://www.banggood.com/Low-ZVS-12-...duction-Heating-Machine-Module-p-1038472.html

http://www.ebay.ca/itm/Mean-Well-MW...348062?hash=item56839ddb5e:g:uNoAAMXQtRxSIZmc

http://www.ebay.ca/itm/DC-12V-Multi...222133?hash=item3f51f92535:g:1-UAAOSwG-1Wym~A

http://www.ebay.ca/itm/LJ12A3-4-Z-B...2133&clkid=4452030938499449287&_qi=RTM2247626
Click to expand...

If you ever do this, please post the plans and directions so others can build a similar annealer. I think it a great idea!
 
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