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How to prevent corrosion prevention of stainless steel gates

Edit:Xinertai Hydraulic MachineryUpDate:2020-07-10

How to prevent corrosion prevention of stainless steel gates


Stainless steel gates are used in the water supply and drainage project to intercept the water flow in the channel. The working medium is raw water, purified water and sewage at room temperature. Therefore, everyone knows how to prevent corrosion of stainless steel gates?


The anti-corrosion methods of stainless steel doors are as follows:


1. Stainless steel and non-metallic materials are not coated with anti-corrosion layer.


2. The contact surfaces of the transmission parts are coated with anti-rust grease.


3. The quality of carbon steel parts (except transmission parts) has been sandblasted and derusted to meet the Sa21/2 standard.


4. The coating is uniform, bright, complete, without roughness, paint leakage, etc. The paint film is hard and has no defects such as peeling and cracks.


Stainless steel (stainless acid-resistant steel) gates (zhá) gates are generally used in water plants, sewage plants, petroleum, chemical, metal smelting, irrigation and drainage, drainage, electricity, ponds and weirs, etc., as a cut-off, flow adjustment and water level control. The working medium is raw water, clean water and sewage at room temperature. So how does the stainless steel gate prevent corrosion?


The protection of stainless steel gates basically adopts paint protection, that is, the surface of the stainless steel gate is coated with matching primer and surface coatings to form a protective layer to isolate the stainless steel gate from the electrolyte solution and air to prevent Corrosion has occurred. Variable air volume valve For valves with a working pressure greater than 1.0 MPa and a cut-off function on the main pipe, the strength and tightness performance test should be carried out before installation, and it can be used only after being qualified.


The corrosion protection of stainless steel gate (zhá) doors is mostly protected by metal thermal spray coating. Metal thermal spraying is to melt zinc wire, aluminum wire and other metal wires in a high-temperature flame through a set of special equipment to form mist-like particles (content: atoms, molecules, ions), and spray them to the treated stainless steel at a higher speed On the surface of the stainless steel gate, a metal protective coating is formed after cooling. This protective coating can effectively prevent the stainless steel gate from being corroded.

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