| 配方類型： |
DETERGENTS |
| 配方說明： |
walnut hulls were found to be the best abrasive for cleanjing
aluminum surfaces prior to painting. samples vlasted with walnut hulls
showed no compressive stress of the surface.samples blasted with
abrasives such as silicon carbide, silica sand, or garnet showed
average compressive stresses of 23.6-33.1 ksi walnut-hull blasting
resulted in the amount of warepage and gave the smoothest surface.
the puality of the repainted surfaces was very similar to a first-time
painted s |
| 配方組成： |
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