We are new to this and have been trying to establish a process and also a specification.
We have a hand/Manual shot peening machine and I have used a SAE 260 (0.6/0.7mm size) shot to start with. I have used a 4 bar air pressure
The material is valve steel;one is X45CrSi93 martensitic valve steel and other being X50CrMnNiNbN219 an Austenitic valve steel.
I also have to maintain a surface finish of 4Rz Max.
If you have a prior experience of valve shot peening, could you suggest me some parameters, guide on some experiments to start with to arrive at a process parameter and specification.
Tappet end
Seat of the valve
