tempra diy

[massi481]

Good morning to all,
First of all I wanted to say that in the company we found an electric oven with which it is possible to harden small pieces.
I wanted to know if anyone had any documentation to know how to proceed to the tempering of details. We would usually tempt k720 k110 and rarely c40 and w300.
I would need to know:
Tempra temperature
time of stay in the oven
cooling (we would do it in exhausted oil)
tempering temperature
cooling stay or how to do it
how to cool it after tempting

Moreover, as last I would be useful to know the variables due to the size of the piece to be tempered.

Thank you all before!

max max

 

[rinato]

Hello, if you ask your supplier of steels, it has tabs with tempering diagrams. but to tempt in "house" do you also have a way to break down the fumes of the shutting oil? because if you pass who you know are pains.. .
and anyway you'd need a countertop to figure out if your result fits in the diagrams, and the k110, I think, should be quenched in vacuum.

 

[massi481]

Hello reborn,
yes the fumes can eliminate them quietly and I also have the hard meter.
then I will try to ask my steel supplier.
If you find anything, send it to me!
Thank you so much!

 

[Lucky66]

Hello Massive
to harden with those fornets
1) you need to build a box with stainless steel cover (which is in the oven)
2) you need to buy coal granules
3)put the pieces in the box and cover them with coal and some paper to burn the gases
4)put the lid and seal with refractory ground
5)heat the oil before introducing the pieces.
6)you should let the oven cool before making the findings
advice (let it go)
hi

 

[rinato]

I don't say I'm signing lucky66, but almost.
Anyway: good work.

 

[massi481]

Bye to all,
I have already done some tests and with the 720 I got some good
results.

 

[Lucky66]

Hello Massive
Did you do the operations I told you, did you put the piece so free in the oven??

 

[massi481]

:smile:ciaolucky66,
no I left them free in the oven, brought to temperature the oven for the 720
then left in the oven pre the necessary time; cooled in cold oil
and then made the discovery.
we say the result looks good!
the only problem the smell in workshop!!!!!!!!!!:smile:

 

[Lucky66]

I don't know what pieces you're doing, but so hardening the material on the surface gets deburized and loses its characters, plus it will become orange peel.
Hello luck66

 

[massi481]

I made folds for prototypal pieces and 2 primer.