Use shot blasting to remove scale, rust and other impurities and create appropriate roughness to facilitate subsequent painting. Then use a vacuum cleaner or purified compressed air to clean the steel surface.

The quality of metal abrasives used for hull segment sandblasting directly affects quality and comprehensive cost factors such as coating quality, sandblasting efficiency, paint, kinetic energy, abrasive consumption, etc. With the introduction of the new coating protection performance standard (PSPC), higher requirements have been put forward for the quality of segmented sandblasting. Therefore, the quality of metal abrasives has become increasingly important in sandblasting. is particularly important.