Steel structure shot blasting and rust removing method

Abstract

The invention provides and relates to a steel structure shot blasting and rust removing method to improve the rust removing efficiency of steel and reduce energy consumption. According to the method, a method for controlling surface roughness by selecting proper shot kinds and different shot grades, a method for controlling the casting time by adopting different conveying roller way speeds on steel surfaces of different rust grades and a method for controlling energy consumption through adjustment of casting angles and stopping of a casting device are adopted, and therefore the purposes of ensuring the rust removing grade, improving the rust removing quality, improving the production efficiency, reducing energy consumption and reducing the production cost are achieved. The method is suitable for construction for steel material surface cleaning and friction surface treatment of welding H steel, steel materials, sectional materials, steel pipes and steel structure nodes.

Description

technical field [0001] The invention relates to a steel rust removal method, in particular to a steel structure shot blasting rust removal method. Background technique [0002] Rust removal treatment is a major process in the production of steel structures. If the treatment is not good, it will directly affect the quality and quality of the steel structure, shorten the maintenance cycle of the steel structure or affect the service life, and sometimes cause structural safety problems during the service life of the steel structure. , with the development of steel structures, shot blasting has become the main derusting method for derusting architectural steel structures due to its unique advantages. [0003] The type, shape, size and gradation of the projectile are very important factors affecting the surface roughness after derusting. If the projectile is selected too large, it will be easily broken when it hits the steel surface and absorb energy to reduce the impact energy. ...

AI Technical Summary

Problems solved by technology

Generally speaking, the larger the projectile, the better the derusting effect, but the greater the surface roughness after derusting, the less the number of projectiles covered on the surface of the component with the same area, the lower the effect.

In addition, shot blasting is to hit the thrown projectiles on the surface of the steel to achieve the purpose of removing surface rust. The thrown steel shots cannot hit the required steel surface, that is, "empty shot", which will generate unnecessary energy consumption

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