Dust-free corrosion-resistant coating process for steel materials

Abstract

The invention provides dust-free corrosion-resistant coating process for steel materials, which is characterized in that steps include 1, cleaning surfaces of a base material to be coated by the aid of high pressure water generated via ultra-high-pressure water jetting equipment so as to remove rust, scale cinder or old paint on the surface of the base material, and generating floating rust on the cleaned surface of the base material after the cleaned surface of the base material is dried; 2, coating water-based rust transform primer on the surface of the base material, and forming a transform membrane after the water-based rust transform primer is dried; and 3, spraying finish paint on the base material after the base material is painted or directly spraying finish paint on the base material. In the dust-free corrosion-resistant coating process, dust cannot be generated in construction, and cleanness of treated surfaces is far higher as compared with traditional sand blasting and shot blasting. Simultaneously, treatment speed is fast, and the speed of single gun treatment is higher than that of single gun sand blasting by three to four times.

Description

technical field [0001] The invention relates to a dust-free anti-corrosion coating process for iron and steel materials. Background technique [0002] At present, the highest level of anti-corrosion coating for domestic steel materials mainly adopts the following process: use sandblasting (or shot blasting) to treat the base material to Sa2. Spray the topcoat directly. The anti-corrosion ability of this process is acceptable, and it is currently the mainstream process with the highest anti-corrosion requirements in China. But this process also has its obvious defects: one is that the sandblasting (shot blasting) process will cause serious dust pollution, which is seriously harmful to the environment and the health of construction personnel; The cleanliness of the material is low: in addition to sandblasting (shot blasting) will produce a lot of dust falling on the substrate, the steel shot or quartz sand used in the process will also have a strong mechanical impact on the...

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Problems solved by technology

But this process also has its obvious defects: one is that the sandblasting (shot blasting) process will cause serious dust pollution, which is seriously harmful to the environment and the health of construction personnel; The cleanliness of the material is low: in addition to sandblasting (shot blasting) will produce a lot of dust falling on the substrate, the steel shot or quartz sand used in the process will also have a strong mechanical impact on the substrate, resulting in the wave crest of the substrate Microscopic deformation, and some impurities such as dust and inorganic salts are wrapped in it, which eventually leads to the decline of anti-corrosion ability

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