Is it okey to use a kind of basting for a Cast Aluminium part as a finished surface instead of painting?
2006-12-10 22:12:32 · 2 answers · asked by ARASH R 1 in Science & Mathematics ➔ Engineering
Sand blasting is quite different from shoot blasting. The sand blasting is with abrasive and leaves the surface active with open crevices to give the paint finish a good support. Shoot blasting could go as finish if the part is used in a non corrosive environment because employs a quasi non abrasive steel grit and can leave a more hard and soft finished surface. A little silicone oil or gel could seal and guarantee agreeable matte finish. Painting obviously guarantees a better protection against corrosion. Phosphating, chromiting and anodizing could also be used depending from applications. Cylinder head in automotive for example is finished only with vibrators and some ceramic abrasive. Standard finish are indicated with a SA # to indicate the rugosity.
2006-12-12 12:14:08 · answer #1 · answered by mi52 3 · 0⤊ 0⤋
None that I have ever run across. If I want something blasted and I think the surface really matters, I will specify a grit size, but usually don't mess with it. Same thing with a Wheel-a-brator; I specify grit size and time cycle.
If I blast something, it is because I am going to cover it with nice, shiny paint.
2006-12-11 12:47:25 · answer #2 · answered by www.HaysEngineering.com 4 · 0⤊ 0⤋