EN8D axle shafts temper time

[thejackal3]

We do induction heat treatment of axle shafts made of EN8D and then furnace temper it.Axle shafts are 58-62 HRC as quenched.for how much time and at what temperature we temper them to get 55-56HRC on surface?

 

[swall]

Assuming a belt furnace, 45-60 minutes for one hour at 350-375F would be the norm for induction hardened axle shafts.

 

[thejackal3]

We are Tempering at 200C at 60 minutes.

 

[arunmrao]

thejackal3,it will,help,if you provide your thermal cycle details in the initial post,rather than providing them after someone responds. This will avoid wastage of time and discussions . Also,it will generate more meaningful response.

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