SAE 1045 axle shafts bend after induction hardening
SAE 1045 axle shafts bend after induction hardening
(OP)
Lately we have seen that many axle shafts (SAE 1045) are bending more than often after induction hardening and also while doing straightening process after tempering to 50 -55 hrc still axle shafts are breaking from center.some axle shafts are through hard which we check and suspect. This could be the reason that these are breaking.? please required expert advice on this.





RE: SAE 1045 axle shafts bend after induction hardening
RE: SAE 1045 axle shafts bend after induction hardening
As far as the hardening itself, check your power level, frequency, and scan speeds for fluctuation. Your quenchant supplier should be able to check your polymer concentration and cleanliness for you.
RE: SAE 1045 axle shafts bend after induction hardening
thanks n regards
RE: SAE 1045 axle shafts bend after induction hardening
I don't know your hardness and case depth specs so it is difficult to comment on adding time and/or temperature to the temper cycle. You may also need to validate this since it is a change to your control plan.
If your procedures allow rework, try normalizing the shafts or temper at 800F, then straighten in this condition. Repeat the induction harden process, if the issues have been fixed runout should be reduced.
RE: SAE 1045 axle shafts bend after induction hardening