Sophisticated processing technology for stainless steel finned tubes
In the production process, the laser welding stainless steel finned tube is mainly made of 304 stainless steel. It is mainly used for the heat exchange of two media when it is used. The 304 stainless steel finned tube has excellent technology. It is an alternative product for heat exchange and waste heat recovery in boiler, power generation, petrochemical, HVAC, refrigeration, air conditioning and other industries.
Laser welded stainless steel finned tube can effectively improve the efficiency of its heat exchanger during use, to a certain extent, effectively extend its life, reduce volume and save materials, the whole rolled finned tube has no contact thermal resistance, heat transfer Good performance, high strength, heat resistance vibration and mechanical vibration, good thermal expansion performance.
Laser welded stainless steel finned tube has the characteristics of high strength, small flow loss, strong anti-corrosion performance, easy deformation and long working life under long-term cold and hot working conditions. The integrally rolled fins are smooth, free of burrs, wrinkles, and easy to clean. It is easy to remove condensate on the outer surface of the fins during wet cooling in heating and air conditioning projects. It is not easy to form dust and scale in drying and heating and other heat exchange occasions.
The laser-welded stainless steel finned tube has low contact thermal resistance, the product can maintain a stable low value within a large temperature change range, the entire product has a high heat transfer coefficient, and has good resistance to sudden changes in temperature and vibration during use. Units The length of the heat exchange area is large, the heat transfer is high, the structure is reliable, and the life is long; the surface of the fin is smooth without burrs, no wrinkles, and is not easy to scale, easy to clean and exclude surface water, low flow resistance, and can maintain good heat transfer performance for a long time. .
Stainless steel finned tube temperature
In the selection of stainless steel grades, we must pay attention to the surface temperature requirements, and this is also one of the factors that must be considered. So on this question, the answer is yes. Moreover, the surface temperature of different stainless steel grades is different. Moffi Thermal Technology reminds you here, for example, 304 stainless steel, its surface temperature is about 450 ℃, and 321 stainless steel, it is 600 ℃-700 ℃.
Stainless steel finned tube has strong adaptability
The stainless steel finned tube has high heat transfer efficiency when it is used. The disturbance of the fin to the fluid causes the boundary layer to rupture continuously. Because of the relatively large heat transfer coefficient, the stainless steel finned tube is thin because of the separator and the fin. , With high thermal conductivity, so that the finned tube heat exchanger can achieve high efficiency.
Due to the compactness of the laser welded stainless steel finned tube of Murphy Thermal Energy Technology in operation, its equipment has an extended secondary surface when it is used, so that its surface area can reach 1000㎡/m3. The whole product is light and compact, the reason is compact and mostly made of aluminum alloy, and now steel, copper, composite materials, etc. have also been mass produced.
The laser welded stainless steel finned tube has strong adaptability, and it is very suitable for the heat exchange between gas-gas, gas-liquid, liquid-liquid, various fluids, and the phase change heat that occurs in the state change during operation. . Through the arrangement and combination of flow channels, it can adapt to different heat exchange conditions such as counter-current, cross-flow, multi-stream and multi-pass flow.
The manufacturing process of the stainless steel finned tube is strict, the process is complicated, it is easy to be clogged during operation, and it is difficult to clean and repair, so it can only be used for the heat exchange medium is clean, non-corrosive, not easy to scale, not easy to deposit, not easy Occasions.
Stainless steel finned tubes should be regularly checked to a certain extent for deposits, coking, scale deposits and other scale deposits on each finned tube, and immediately cleaned. If there is dust or dirt on the stainless steel aluminum finned tube, you can use a professional cleaning agent, that is, pickling agent, to clean it. Specifically, it is scrubbed with pickling agent, so that you get a good Removal effect.
However, it should be noted that there must not be any residues, so as not to cause rust and corrosion of the finned tube. At the same time, it is also necessary to check whether the adhesion of each fin tube and the rubber gasket is tight, and whether the rubber gasket itself is intact, so as to avoid leakage caused by the rubber gasket being degummed and damaged.
Adhesion of rubber gasket of stainless steel finned tube
When re-tightening the finned tube each time the stainless steel finned tube is used, pay attention to the position of the scale when the finned tube is pressed back. During the operation, the rubber gasket must not be overpressed. As a result, the ring life is shortened.
When replacing the rubber gasket of the finned tube of the stainless steel finned tube, all the segments need to be updated during the operation process, so that the unevenness of the spacer gap can be effectively avoided, which will directly affect its The effect of heat transfer.
Under normal circumstances, the stainless steel finned tube should be cleaned with water to start the operation. There should be no slight leakage during the use. When the temperature rises to the sterilization temperature during the use, its product leaks. The situation will disappear by itself, if the leakage is still uninterrupted, the finned tube must be compressed a little more. If it still fails, the rubber gasket must be opened for inspection, and the end of the finned tube is generally arranged in the order of the number on the chip, which should be corrected.
The stainless steel finned tube can be divided into stringed tube (sleeved tube), tension wound finned tube, insert tube, rolled finned tube with no dead angle, cast finned tube, Laser welding composite finned tube, which is divided into high frequency welding finned tube, submerged arc welding finned tube, etc.