How to prevent corrosion of stainless steel hydraulic joint?

1, from the pipe material, strict quality control of raw materials.Conduct strict entrance inspection on stainless steel pipe and stainless steel elbow pipe.To ensure that the material how to prevent stainless steel hydraulic joint corrosion?Meet the requirements.In the selection of materials from the two aspects of economy and yonghua bend through pipe joint function comprehensive consideration, in the special operating conditions, can be considered to choose the higher corrosion resistance of nickel austenitic stainless steel, duplex stainless steel, full model stainless steel joint manufacturers titanium and titanium alloy, glass fiber reinforced plastic.When selecting materials, increase the corrosion allowance of pipe and stainless steel tee fitting appropriately to meet the service life requirements of the pipeline system.

Stainless steel pipe processing

3. Electrochemical protection.Electrochemical protection methods mainly include protector protection, cathodic protection and anode protection.The protector protection method is to connect the metal with lower electrode potential and the protected metal to form galvanic cell.The metal with lower electrode potential is dissolved as the anode, and the protected metal is used as the cathode to avoid corrosion.Anodic protection means that the protected metal is connected to the positive pole as the anode by external dc power supply, the electrode potential moves in the positive direction (i.e. the anode polarization) and enters the passivation area of the e-ph diagram. The full model stainless steel joint is protected by the metal "passivation" of the threaded card sleeve joint of baoyonghua.

2. Surface coating protection.At present for the environment of stainless steel elbow pipe corrosion, in addition to the selection of strong corrosion resistance material, but also through the stainless steel pipe surface coating coating method to improve the corrosion resistance.In view of the problem that the surface of stainless steel pipe substrate is relatively smooth and the adhesion of conventional stainless steel reducing pipe anticorrosive coating on its surface is relatively poor, an effective anticorrosive coating for stainless steel for Marine environment -- epoxy powder coating has been developed.The coating is a completely solvent free, in the form of powder yonghua stainless steel sleeve joint, all models of stainless steel quick insert joint spray film coating.

Processing method of stainless steel pipe fitting:

1. Roller method: place a core in the tube, and push and press with the roller around, for circular edge processing.

2. Rolling method: generally no mandrel, suitable for the inner round edge of thick wall tube.

3. Body pressure pushes the tube into the desired shape. This is the method used for most bellows production.

4. Stamping method: expand the pipe end to the required size and shape on the punch press with the core with taper.

5. Forging and pressing method: use the forging machine to punch and stretch the end or part of the stainless steel pipe fittings to reduce the outer diameter. The commonly used forging machine has rotary type, connecting rod type and roller type.

6. Bending forming method: there are three methods commonly used, one is called stretching method, the other is called stamping method, the third roller method, there are 3-4 rollers, two fixed rollers, one adjustment roller, adjust the distance of the fixed roller, the finished pipe fitting is bent.