How to increase the stability and care of the ventilation duct

1. Large, medium and small channel steel, wire rod, construction steel bar, medium-sized seamless steel pipe, fabric air duct wire and galvanized steel wire rope, etc., can be stored in the material arch shed with excellent natural ventilation, but must be placed on the pad. 2. Some small and medium-sized steels, cold-rolled steel sheets, steel chains, ferrite cores, caliber or thick-walled seamless steel pipes, various cold-rolled, cold-drawn steels and their high-priced and easily eroded metals, Can be stored in storage. 3. The place or warehouse for storing seamless steel pipe products should be selected in an area that is clean and tidy, and the drainage pipes are smooth, so as to prevent factories and mines that cause harmful substances or smoke. Weeds and all dirt should be eliminated in the soil, and the steel should be kept clean. Fourth, large and medium-sized channel steel, rails, thick steel plates, large-diameter steel pipes, steel castings, etc. can be accumulated outdoors. 5. Do not pile up with raw materials such as acid, alkali, salt, concrete, etc. that are adhesive to steel in the warehouse. Different types of steel should be stacked separately to avoid confusion and contact erosion. You can also ask a professional and professional solution team to help your cold-rolled welding damper. compound, but it cannot remove rust, air oxide scale, welding flux, etc. on the surface of steel, so it is only used as a matching trick in anti-corrosion production. 2. Derusting with special tools Mainly use special tools such as steel brushes to grind and polish the surface of cold-rolled ventilation ducts, which can remove loose or warped air oxide scale, rust, and welding penetration. The rust removal of hand-made special tools can reach Sa2 level, and the rust removal of special tools for driving force can reach Sa3 level. If the surface of the steel adheres to a firm iron oxide scale, the rust removal results of the special tools are not ideal, and cannot reach the anchor pattern specified by FRP anticorrosion. deep. 3. Pickling passivation generally uses two methods of organic chemistry and electrolysis for pickling and passivation. For anti-corrosion of steel pipes, only organic chemical pickling and passivation is used, which can remove air oxide scale, rust, and old coating. It is used as reprocessing after sandblasting and rust removal. Although chemical water treatment can make the surface reach a certain level of cleanliness and roughness, its anchor pattern is shallow, and it is easy to cause environmental pollution to the environment. 4. Spray (throwing) rust removal Spray (throwing) rust removal is driven by the power motor to push the spray (throwing) to distort the leaves at a high speed, so that the wear-resistant materials such as gold steel sand, steel balls, thin iron wire segments, and minerals are in the centripetal force. Under the actual effect, the spraying (throwing) treatment of the surface of the seamless steel pipe can not only completely remove the toxic rust, metal oxides and wastes, but also under the actual effect of the strong impact and friction of the wear-resistant material, the seamless steel pipe can The required mean roughness can also be achieved. After spraying (throwing) rust removal, it can not only expand the physical adsorption effect of the pipe surface, but also improve the adhesion effect between the anti-corrosion layer and the mechanical equipment on the pipe surface. Therefore, spraying (throwing) rust removal is an ideal rust removal method for steel pipe anticorrosion. Generally speaking, shot blasting (sand) rust removal is mainly used for the treatment of the inner and outer surfaces of the pipe, and shot blasting (sand) rust removal is mainly used for the treatment of the surface of the pipe.

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