Steel Sand Steel Sand with a reasonable way to improve the effect of steel pipe rust

- Aug 01, 2017 -

For the commonly used epoxy steel pipe, vinyl, phenolic and other anti-corrosion coating construction process, the general requirements of the steel pipe surface to near white (Sa2.5). Practice has proved that the use of this rust level can almost get rid of all the scale, rust and other dirt, anchor depth of 40 ~ 100μm, fully meet the coating and steel pipe adhesion requirements, and shot blasting machine steel Pill rust technology can be used to lower operating costs and stable and reliable quality to near-white (Sa2.5) technical conditions.

In order to achieve the desired effect of rust, should be based on the hardness of the steel pipe surface, the original degree of corrosion, the required surface roughness, coating type to select the abrasive, for single-layer epoxy, two or three polyethylene coating, Steel sand and steel shot of the mixed abrasive easier to achieve the desired effect of rust. Steel balls have the effect of reinforcing the steel surface, while the grit has the effect of etching the surface of the steel. Steel sand and steel shot of the mixed abrasive, usually steel balls hardness of 40 ~ 50 HRC, grit hardness of 50 ~ 60 HRC can be used for a variety of steel surface, even in the C and D grade corrosion of steel surface , Rust effect is also very good, reasonable combination of steel shot grit can be shot blasting machine has a reasonable use.


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