Laser welded finned tube is a kind of heat conduction electronic device. It is easy to improve the heat transfer efficiency. Generally, fins are added on the surface of the heat exchange tube to expand the surface area of the heat exchange tube, so as to ensure the purpose of improving the heat transfer efficiency.
Important characteristics requirements
As a heat conduction electronic device, laser welded finned tube works in high temperature dust for a long time. For example, laser welded finned tube in heat treatment furnace is used in harsh environment, high pressure and etching atmosphere, which requires finned tube to have high technical parameters.
1)、Anti-corrosion
2)、Anti-wear
3)、lowercontactresistance
4)、HigherStability
5)、Professional ability of dust prevention
type
Suit plate wing
Using the method of manual customer service telephone suit is called handmade suit. It is with the help of common tools, relying on human kinetic energy to insert the fins one by one. This kind of method because of the plate fin type press in force is more limited, so the interference of suit is small, plate fin type is easy to lead to loose situation.
Embedded spiral plate fin
Embedded spiral finned tube heat pipe radiator
The plate fin type can be put into the chemical machinery, and the cost is not high, but the production efficiency is low.
Brazed spiral finned tube radiator heat pipe radiator
Because of the limitation of the thickness of the hot-dip galvanized layer (when the hot-dip galvanized layer is thick, the zinc layer is weak and easy to fall down), and the liquid zinc is unlikely to penetrate into the gap completely, so the combination rate of plate fin type and seamless tube is still not high. In addition, the heat transfer coefficient of zinc is smaller than that of steel (about 78% of that of steel), so the thermal conductivity of zinc is low. Zinc is easy to be corroded in acid, alkali and potassium thiocyanate. Therefore, it is not suitable to make air preheater with hot-dip galvanized spiral finned tube radiator.
Spiral plate fin type high frequency welding machine
Compared with the methods of insertion, brazing (or whole hot-dip galvanizing), it is more excellent in product quality, heat transfer efficiency, productivity and automation technology. The welding rate of the plate fin type is also significantly improved, but only up to 60%. Due to the limitation of the manufacturing process, the base tube should not be too thin, the plate fin spacing should not be too small, and the plate fin type can not be coiled to the air tray. Moreover, because the root of the heat pipe radiator of the high-frequency welding machine fin tube radiator can not be penetrated and there are wrinkles on the root and other factors, the heat pipe radiator of the high-frequency welding machine fin tube radiator still has many shortcomings in heat transfer efficiency and dust prevention.
In view of the above reasons and easy to respond to the relevant national energy conservation and emission reduction policies, our company has made innovation and achieved success, and developed new products of metal laser welding machine fin tube radiator and heat pipe radiator.
Aiermat metal laser welding machine finned tube radiator heat pipe radiator adopts international brand laser generator, automatic production line and fan for the company's independent research and development, has been patented invention, specific advantages are as follows:
1、Top brand laser generator for arc welding
2、Delicate and continuous welding
3、Use and maintain gas
4、More than 95% of the base cylinder fin penetration.
5、The root of plate fin type is flat without fold, and the dust prevention work is more diligent than that of general finned tube radiator and heat pipe radiator.
7、The plate fin type has small spacing and compact structure. The plate fin type spacing can ensure at least 2mm, which can greatly increase the heat conduction floor area.
8、Full automatic control arc welding is used in commercial economy production and manufacturing, which is conducive to the stability of product quality.
9、The shape design of laser welded finned tube is unique, the arc welding and electric welding are firm, and the products can be bent into different shapes.
At present, the three roll skew rolling integral spiral finned tube radiator has been successfully applied to single finned tube radiator, composite finned tube radiator, or low finned tube radiator made of steel; At present, the market of steel integral finned tube radiator is low finned tube radiator and high finned tube radiator.
