Rust removal and maintenance method of straight seam welded pipe

The maintenance of straight seam welded pipe equipment has become a headache. Straight seam welded pipe equipment plays an important role in life and work. It is generally required that the surface of the straight seam welded pipe fittings reach a near-white level (Sa2.5). The practice has proved that the construction process of epoxy, vinyl, phenolic, and other anti-corrosion coatings is commonly used in straight seam welded pipe fittings. This rust removal grade can almost remove the rust. All the oxide scale, rust, and other dirt are removed, and the depth of the anchor pattern reaches 40~100μm, which fully meets the requirements of the adhesion between the anti-corrosion layer and the steel pipe. Near white level (Sa2.5 technical conditions. When the rust of the straight seam welded pipe occurs, it should be treated according to the rust removal method and method to ensure the performance and performance of the straight seam welded pipe. It can be used in different industries and fields, and it can be used in the construction industry. The rust removal speed of the steel pipe depends on the type of abrasive and the displacement of the abrasive. In the formula: m abrasive spray ( Throwing) amount; V abrasive running speed; m1 single-particle abrasive. The size of m is related to the crushing rate of the abrasive, and the size of the crushing rate directly affects the interest in the surface treatment operation and the cost of the rust removal equipment. When the equipment is fixed, m is a constant. , y is a constant, so E is also a constant, but due to the crushing of the abrasive, m1 changes, so generally, the abrasive with a lower loss rate should be selected, which is beneficial to improve the cleaning speed and the life of the blade. To achieve the ideal rust removal For the effect, the abrasive should be selected according to the surface hardness, original rust level, required surface roughness, coating type, etc. of the straight seam welded pipe equipment. The mixed abrasive steel shot is easy to achieve the ideal rust removal effect. The steel shot has the effect of strengthening the steel surface, while the steel grit has the effect of etching the steel surface. The mixed abrasive of the steel grit and the steel shot (usually the hardness of the steel shot is 4050HRC) The hardness of steel grit is 5060HRC, which can be used on all kinds of steel surfaces.