1、 Cleaning
Use organic solvent and solvent to clean the surface of stainless steel plate to remove oil, vegetable grease, dust, lubricant and similar organic compounds, but it cannot remove rust, oxide skin, welding flux, etc. on the surface of stainless steel plate.
2、 Pickling passivation
Generally, organic chemistry and electrolysis are used for pickling and passivation. Only organic chemistry pickling and passivation are used for steel pipe corrosion prevention, which can remove oxide skin, rust and old coating. Sometimes, it can be used as a solution after shot blasting. Although chemical water treatment can make the surface clean and rough, its anchor lines are shallow and it is very easy to cause environmental pollution to the surrounding environment.
3、 Anti rust treatment of special tools
Steel brush and other special tools shall be used to polish the surface of stainless steel plate to remove loose oxide skin, rust, welding penetration, etc. The anti rust treatment of manual tools can reach Sa2 level, and the anti rust treatment of special tools for driving force can reach Sa level 3. If the stainless steel plate surface is adhered with solid iron oxide scale, the actual effect of the anti rust treatment of special tools is not ideal, and it cannot reach the deep layer of the anchor pattern specified by the anti-corrosion regulations of glass fiber reinforced plastics.
4、 Spray rust prevention treatment
The spraying and rust prevention treatment is based on the powerful motor to drive the spraying leaves to run at a high speed, so that steel balls, emery, fine wire segments, minerals and other wear-resistant materials can spray on the surface of the straight seam steel pipe under the strong centripetal force effect of the motor. It can not only completely eliminate metal oxides, rust and waste, but also under the strong impact and friction effect of wear-resistant materials, The required uniform surface roughness can also be achieved.
