[TheForge] An Impressive Quench

[Dave Smucker]

Very interesting photo.
Based on your time frame this would have been a Leopard tank.  The industrial building, cranes and heat-treat furnace look like they are from this time frame (70's) as you noted and not WWII time frame.
I have never seen large complex castings of this type heat-treated but have seen large rolls oil quenched.  Oil is the quench medium of choice for such a complex shapes as water would likely result in very serious distortion and cracking failures.  The oil used would be special industrial quench oil.

Dave Smucker
Brasstown, NC



-----Original Message-----
From: theforge-bounces at mailman.qth.net [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Charles
Sent: Sunday, July 30, 2017 8:36 PM
To: Blacksmithing List Sponsored By ABANA
Subject: [TheForge] An Impressive Quench

This is an image of a Panzer tank hull being quenched in the 60s or 70s.   I stopped using crankcase oil and now use olive oil since it smells better.  No matter what oil they use there, that has got to reek. https://s3-us-west-1.amazonaws.com/hmt-forum/tank_quenching.jpg


Charles
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