Hey all, I am having a problem with discoloration on the machined surfaces of aluminum die castings. These parts are cast from A383 aluminum alloy. The discoloration is kinda a brownish colored tint, maybe a tarnished look. If I scratch it with a knife blade, it is shiny underneath, so it is on...
Does anyone know what I can use to coat a k mold. In the past I used a certain type of graphite, it worked great but I don't know where to get it. Currently I am using a dry graphite from a spray can, this not working too well. The mold is getting too hot and my samples have heat shrinkage.
Hey all, I am trying to make a decision. I spent 20 years working in a large casting plant, gained a great deal of knowledge and experience. The plant closed, I then went to work in another casting plant, a new plant suplying parts to toyota. I have a great job here, working in qa lab making...
