Transmission input shaft

Kdancy
Kdancy Senior Contributor
edited April 2014 in HUDSON
Just wondering if any one has tried "hardening" the stepdown transmission input shaft?

Comments

  • Lance
    Lance Member
    Kerry, You can harden it but don't harden it all the way through. When that happens it becomes like cast iron; hard but very brittle. You don't want it to 'brinnell'.   Been there had that happen. You can have it partly hardened for added strength but the trick is to know when to remove it from the oven at what particular time.
  • BillUSN1
    BillUSN1 Member
    I thought about doing the opposite.
    What about just cryogenically freeze them.
  • bob ward
    bob ward Senior Contributor
    You can DIY case harden steel with Cherry Red case hardening powder, but I'm wary about hardening (heating and quenching) precision machined parts by any method, as warping can occur.

  • BillUSN1
    BillUSN1 Member
    Doing some research, I found you can get to about -100* by using isopropyl alcohol and dry ice.
    But liquid nitrogen is about -300*. So I'm not sure if the DIY method would be cold enough.
    Everything I research says cryogenic would be perfect in this application.
    But there isn't enough specifics on how it works to know what temp is required to achieve the desired results.

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