Aluminum extruded finned tubes using the form of the base tube covered with aluminum tube(the base tube can be carbon steel, stainless steel, copper) through machine extrusion, forming a tube fin, the fin base and the tube outer wall is close fitting, this fin tubing control can make finned tubes with high heat transfer coefficient and heat transfer performance.
Aluminum extruded finned tubes, also called [integral finned tubes" using the form of the base tube covered with aluminum tube(the base tube can be carbon steel, stainless steel, copper) through machine extrusion, forming a tube fin, the fin base and the tube outer wall is close fitting, this fin tubing control can make finned tubes with high heat transfer coefficient and heat transfer performance. Extruded finned tube can be made of iron, copper or aluminum tube by compound rolling, which has the advantages of tight bonding, small thermal resistance, good heat transfer performance, high strength, small flow loss, strong anti-corrosion performance, not easy to deformation under long-term hot and cold working conditions, long working life and so on.
Extruded finned tube manufacturing process
Pipe line--compressing or rolling--strip peeling--washing--pressure test--blast blowing--packaging.
The extruded fin tube is formed by a bimetallic tube consisting of an aluminum outer tube and an inner tube of almost any material. The fin is formed by rolling the material from the outside of the outer tube to provide an integrated fin with excellent heat transfer performance and life. The extruded fins provide excellent corrosion protection for the base tube.
The production method of the composite finned tube mainly includes the extrusion method: the bimetallic composite tube is lined with a mandrel, and driven by the rotation of the roller blade, the composite tube is processed on the outer surface through the cavity formed by the rolling groove and the core head Out fins. The heat transfer tube produced by this method is an organic whole with its outer tube and fins, so there is no problem of contact heat loss, and it has good performance and high heat transfer efficiency.
Extruded finned tube advantage
Compared with the ordinary wound finned tube, the contact thermal resistance remains stable in a large range with the temperature change, so the heat transfer performance of the bimetallic aluminum extruded finned tube is better than the spiral fin tube in the limit tube wall temperature range.
In addition, compared with the coiled tube, the bimetallic aluminum extruded fin tube has outstanding corrosion resistance and high strength, it can withstand 4.0MPa water pressure cleaning, the fins still do not fall down, the base of the bimetallic aluminum extruded tube. The tube can be selected according to the corrosion of the fluid in the tube and the processing technology. The base tube can be carbon steel, copper, stainless steel, etc.
Extruded finned tube applications
Extruded finned tubes are the main equipment for air coolers and are commonly used as heat exchangers in power plants (electric, nuclear, thermal and geothermal). Steam condensate system. Chemical and petrochemical industries. Food processing plants and refrigeration technology. Industry (steel mills, incinerators, gas compression facilities). Petrochemical, power plant and power plant renovation, air conditioning and refrigeration, boilers, finned tube economizers and air preheaters. Maximum working temperature is 280°C-300°C.
Aluminum Extruded Tubing,Extruded Aluminum Tube,Extruded Aluminum Tubing,Extruded Fin Tubes Murphy Thermal Energy Co., Ltd. , https://www.murphyfinnedtube.com
According to reports, the current global fasteners are mainly used in the automotive industry, electronics industry and construction and maintenance industries. In 2007, China exported a total of 2.57 million tons of fasteners, which accounted for 48.95% of the current year's output. However, China’s exports of fasteners are still mainly medium and low-strength fasteners, and export orders are confusing, and export volume has grown too fast. Export time and export countries are too concentrated, low prices, high value-added products, which often trigger some trade frictions such as anti-dumping. Among them, the automotive industry is the largest user, with demand accounting for approximately 23.2% of the total sales of fasteners; followed by maintenance of the industrial market and construction industry, accounting for about 20% of the total sales of fasteners; the third is the electronics industry, accounting for about 16.6% of total sales of fasteners.
In recent years, the ratio of the unit price of imported fastener products to the unit price of exports has been increasing, and the ratio in the past two years actually exceeded eight times. In 2007, we used 56.95% of the amount of foreign exchange earned on fasteners. The number of fasteners with a export volume of 6.81% shows that China's fastener industry is still a developing industry. It is large and not strong, and it has a big gap with the developed countries of the United States, Japan, and Europe.
The next few years will be the high-speed oscillation period of the hardware industry. The direct consequence of this high-speed shock is the expansion of the polarization trend in the current hardware and kitchen brand camp. It is expected that the hardware companies that can really survive in the market in the next few years will definitely not be so much now. However, this high-speed oscillation in the hardware industry will bring huge opportunities. The result of the shock will make the market operation more rational.
China's Fasteners in the International Market Should Develop More Rationally
With the development of science and technology, the world has become smaller and smaller, and the integration between countries has been rapid. In this big family, the rapid rise of China’s economic strength has made China become the most dynamic economic region in the world. China's economic facilities are relatively complete, its industrial development is relatively mature, and its labor cost is relatively low. It has the comparative advantage of becoming a global hardware manufacturing center, and the outward development of hardware manufacturing industry has obvious characteristics.