When producing steel structures, is it better to remove rust first, or is it better to remove rust and sandblast and paint after manufacturing?

1. What is steel structure shot blasting? Steel structure shot blasting is a mechanical metal surface treatment process that requires the use of a steel structure shot blasting machine. This equipment uses a shot blaster to eject steel sand and hit it on the surface of the steel structure. The resulting collision and blow complete the shot blasting process. It can remove rust and oil impurities from the metal surface and restore the original luster of the metal. The operation process of the steel structure shot blasting machine is closed, and the equipment is equipped with a dust collector, which avoids dusty work and ensures environmentally friendly air emissions. * * standard. The industry has a wide range of applications, such as shipbuilding industry, auto parts, aircraft parts, bridges, steel structure parts, welded plate parts, and anti-corrosion of inner and outer walls of pipelines. 2. What is the purpose of shot blasting treatment of steel structures? 1. Remove rust and scale. It replaces the traditional manual rust removal (sand peel, wire brush, etc.) and replaces the traditional pickling rust removal process. 2. The effect is dozens of times higher than that of the traditional process. The steel structure parts are placed on the roller conveyor, and the cleaning speed is about several meters per minute. 3. The equipment is equipped with a dust collector, so there is no dust and no pollution on site. This is * * Environmentally friendly products promoted. 4. The surface of the steel structure parts after treatment becomes rough, which increases the adhesion of the paint surface during the spray painting process. 5. Eliminate the internal stress of metal workpieces, strengthen the workpieces and increase their service life.