Hardening a form tool made from Gauge Plate

[VicParticipant @vic]

Nice Nuts Jason!

[Neil WyattModerator @neilwyatt]

Posted by JasonB on 15/06/2019 13:32:59:

I do feel that the section of the part being hardened can have an effect, if you have machined the cutting edges then they will be thinner and pointed and will quench faster than the bulk of the part so you can get a harder edge with a less brittle body so the tool may not shatter but the edge could chip.

Edited By JasonB on 15/06/2019 13:37:38

If you do it properly and oil quench it's a gentler process as well and more likely to leave the core a bit softer.

Neil

[Michael GilliganParticipant @michaelgilligan61133]

A couple of useful notes here:

**LINK**

https://www.westyorkssteel.com/files/gauge-plate-ground-flat-stock.pdf

**LINK**

http://www.m-machine-metals.co.uk/info_heatreatment.html

MichaelG.

[JasonBModerator @jasonb]

Strange that the M-machine link says that bright rid is colder than cherry red, I would have said 500degC was cherry red and 8-900degC bright red.

[Michael GilliganParticipant @michaelgilligan61133]

Well spotted, Jason

… I wonder if it was a typo for 'black red'

MichaelG.

[Author]

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