Sanitary fluid steel pipe is an important industrial pipe, widely used in food, chemical, medical and other fields. Therefore, whether it is the quality inspection department or the market terminal, the sanitary fluid pipe has relatively strict requirements, especially the requirements of health, safety, corrosion prevention and so on. So how to do a good job of sanitary fluid pipe, you need to pay attention to the following points:
Stainless steel material purchase should choose high-quality suppliers
The quality of stainless steel material will directly affect the sanitary quality of the pipeline, and it is necessary to choose stainless steel materials that meet the standards.
Commonly used high-quality stainless steel materials are 304, 316, 316L, etc. These stainless steel materials have good corrosion resistance, oxidation resistance, high hardness, easy processing and other characteristics.
The production process of stainless steel pipe materials needs to have a good production environment to ensure the normal operation of the health and environmental protection facilities of the production workshop, such as vertical ventilation, disinfection and sterilization, to ensure the cleanliness of the production environment and avoid pollution.
Select fine production equipment to strictly control the entire production process
The production and processing of sanitary stainless steel pipes pay attention to refinement and lean, and ensure the accuracy, precision and controllability of the production process. Through a variety of modern CNC machine tools to ensure the production accuracy, to ensure the finish and sanitary quality of the pipeline.
Strict quality acceptance standards
The quality acceptance of pipeline is one of the keys to ensure the hygienic level. The quality acceptance standards are required to be perfect, each link of the quality is strictly controlled, multiple tests are carried out, including the inspection mechanism, physical and chemical properties, health indicators, etc., to ensure that the health quality of each batch of stainless steel pipe materials meets strict standards and requirements.
To sum up, in order to ensure the quality of sanitary stainless steel pipes, it is necessary to grasp all aspects of material selection, production environment, production process, quality acceptance and so on.
As long as we master these aspects, we can ensure the quality and health characteristics of sanitary stainless steel pipes.
What do we need to pay attention to in the production of sanitary stainless steel pipes?
1. the use of high protective gas protection
When welding sanitary stainless steel pipe, the chromium and nickel on the stainless steel surface are easy to oxidized, resulting in a decrease in the quality of the welded pipe, so we should use xenon arc welding and plasma welding and other welding modes with gas protection in the production process to maximize the retention of rust
The original characteristics and corrosion resistance of steel.
After the sanitary stainless steel pipe is formed and welded, it must be treated with a solid solution of 1050 degrees to eliminate the internal stress caused by the deformation of the sanitary stainless steel pipe, reduce stress corrosion, restore the intercrystalline change in the welding process of the stainless steel pipe, and also make the carbide in the welding heat sensitive zone dissolve in austenite to prevent adverse effects on the performance of the impregnable steel pipe.
3. pickling passivation of sanitary stainless steel pipe pickling passivation process can make sanitary stainless steel pipe and inner and outer walls produce a thin and dense, hard passivation layer, isolate the influence of the external environment on the pipe during the use of the pipe, so the passivation layer process for sanitary stainless steel pipe corrosion protection has brought an important guarantee.
Every time the finishing tube is rolled, it must go through the process of solution treatment. Ta ensure that the performance of the steel pipe meets the technical requirements. and to provide guarantee for the post-process processing or use. Bright solution treatment process of ultra-long seamless steel pipe has always been a difficulty in the industry.
Traditional electric furnace equipment is large,covers a large area, has high energy consumption and large gas consumption, so it is difficult for realize bright solution process. After years of hard work and innovative development, the use of current advanced induction heating technology and DSP power supply. Precision control of heating temperature to ensure that the temperature is controlled within t2C,to solve the technical problem of inaccurate induction heating temperature control. The heated steel pipe is cooled by "heat conduction"in a special closed cooling tunnel, which greatly reduces the gas consumption and is more environmentally friendly.
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