The maintenance of sanitary stainless steel precision pipe is one of the most important factors to prolong the service life of stainless steel pipe. So how should you maintain it when using it?
Sanitary grade stainless steel precision tube Its hardness HBW≤187HRB≤90HV≤220 Tensile strength ≥480MPa Elongation ≥40% Yield strength ≥175MPa Density 7.98/cm3 Sanitary grade actual melting point is 1375-1450 ℃, solid solution 1010-1150 during use ℃ rapid cooling. Due to the addition of Mo, the sanitary stainless steel precision pipe has excellent corrosion resistance; the daily maintenance precautions of the sanitary stainless steel pipe, the high temperature strength is also very good; what everyone needs to know here is the excellent work hardening (weak magnetism after processing); The solid solution state is non-magnetic. Sanitary seamless pipe has good resistance to chloride corrosion. In various media such as seawater, its corrosion resistance is better than 0Cr18Ni9. Now its application range is mainly used as a pitting corrosion-resistant material for products with special requirements for intergranular corrosion; due to its large carbon content, it reaches 0.03. It can be used for welding requirements Applications for post annealing and high corrosion resistance. Sanitary stainless steel precision pipes are mainly used in seawater equipment, chemical industry, dyestuff, papermaking and other production equipment, and facilities in coastal areas. However, it should be placed in a dry and ventilated room during maintenance, and both ends of the pipe diameter need to be sealed and dust-proof; long-term storage should be checked regularly, and the processing surface should be oiled to prevent rust; the requirements for use are consistent; the inner cavity and sealing surface should be cleaned during installation , check whether the packing is pressed tightly and whether the connecting bolts are tightened evenly.
In addition to doing these things well when maintaining sanitary stainless steel precision tubes, there are actually many more. For example, the sanitary stainless steel precision pipe should be installed according to the allowable working position, but attention must be paid to the convenience of maintenance and operation; or when the sanitary gate valve is used, it can be partially opened to adjust the flow, so as to avoid damage to the sealing surface when the medium flow is large, it should be fully opened Or fully closed; other auxiliary rods should not be used when opening and closing and turning the handwheel; of course, there are still some things to do, that is, its transmission parts should be lubricated regularly; when using sanitary stainless steel precision tubes, the rotating parts should be frequently oiled , The trapezoidal thread part of the valve stem should be oiled, and the valve stem nut should be worn; there must be a set of scientific and correct installation work standards, and the sealing performance test should be carried out during maintenance, and detailed records should be made for inspection.
