Factors affecting corrosion fatigue of stainless steel pipe its maintenance

The key factors affecting the corrosion fatigue process of stainless steel pipe.

The local corrosion of stainless steel seamless pipe caused by alternating seamless stress stainless steel medium is due to the corrosion fatigue failure caused by mechanical (dynamic stress) electrochemical (corrosive medium). At present, no consistent conclusion has been reached. In terms of the formation mechanism, the pitting stress concentration model, the preferential dissolution model of type changed metals, the metal film rupture model the active material adsorption model were proposed. However, under the action of alternating stress, the repeated rupture of passive film, the dissolution of sliding step the re passivation under the combined action of medium alternating stress are the key factors affecting corrosion fatigue. Stainless steel pipe processing process.

To prevent reduce the alternating stress of stainless steel seamless pipe equipment components, including eliminating the stress concentration surface defects on the structure of stainless steel seamless pipe. Choose stainless steel seamless pipe with high fatigue strength, excellent corrosion resistance fine crystal. Double seamless stainless steel is the material.

Under the joint action of Mechanics (dynamic stress) electrochemistry (corrosive medium), the dynamic stress of stainless steel pipe fatigue corrosion caused by local corrosion of stainless steel seamless pipe caused by medium caused by stainless steel pipe are alternated. There are a lot of opinions no consensus has been reached. According to the formation mechanism, the pitting stress concentration model, the preferential dissolution model of type changed metals, the fracture model of metal film the adsorption model of active substances were proposed. Under the joint action of medium alternating stress, the cracking of passivation film, the repeated action of sliding step dissolution re passivation are the key factors affecting the corrosion fatigue process of stainless steel pipe.

To prevent reduce the alternating stress of stainless steel seamless pipe equipment components, including eliminating the stress concentration surface defects on the structure of stainless steel seamless pipe. Choose stainless steel seamless pipe with high fatigue strength, excellent corrosion resistance fine crystal. Double seamless stainless steel is the material.

Stainless steel pipe has a strong rust resistance, if in dry clean air, stainless steel seamless steel pipe factory stainless steel has excellent rust resistance, corrosion resistance, but if it contains a lot of salt in the humid air, improper maintenance, stainless steel will rust quickly. Therefore, the daily maintenance maintenance of stainless steel pipe is a very important task. The manufacturer of stainless steel pipe will introduce eight points for you.

1. Newly decorated users can apply a layer of oil on the surface of the water tank, so as to avoid rust on the surface of the sink due to metal debris in the decoration process. In addition, if you don't use the sink for a long time, you can also apply a layer of oil on the surface of the sink. Protect the sink on the sink.

2. The sink should be cleaned frequently. Use neutral detergent, gently scrub, then rinse with water, then dry with sponge rag. Avoid using steel brushes rough brushes to prevent metal particles adhering to the walls of the sink. Long time use, easy to rust scratch the surface of the sink. Do leave water droplets on the surface of the sink. Water with high iron content may cause brownish red spots on the surface of the sink. For traces, Mr. Su suggested using a low concentration of vinegar solution such deposits, most 304 stainless steel tubes should be cleaned with water.

3. Do put lemon, sauce, pickle, mustard other salt rich food corrosive food on the sink panel for a long time, so as to corrode the sink make its surface difficult to clean.

4. The sink should avoid contact with strong bleaching powder, household chemicals soap for a long time. If this happens, Mr. Su reminds the main room to wash with water wipe it dry with a towel immediately.

5. If there is rust mold on the sink, please use detergent toothpaste on the rust spots, then wipe it with rags. Do use cleaning cloths, sandpaper abrasive materials to clean the sink.

6. Do cut food hard objects directly on the sink panel to avoid scratching the sink deforming the sink.

7. Try to avoid sharp hard tableware (such as knives, forks, cooking utensils, etc.) hitting the sink to avoid scratching contacting the concave surface of the sink.

8. Do leave low carbon steel cast iron cooking utensils in the sink for a long time, leave rubber dishwashing tablets, wet dishwashing sponge other cleaning pads in the sink.