Hi there! So we have a galvanized steel sheet coming from a punching machine and then going to flattner. Even after going through flattner we still have flatness issues and its not meeting customer specifications. I was planning to do DOE using rolling speed, no of times a sheet is rolled, roller pressure as factors and with 2-3 levels. Do you think this is a better idea in figuring out optimal combination of factors or do i need to accept that there's a inherent fault in machine and it's simply not capable to produce good parts anymore? I really need some guidance in solving this issue. Please help!
Thank you!
Thank you!