How to weld stainless steel wire mesh

Stainless steel wire mesh welding:

For 304 stainless steel wire mesh products for welding: because of the characteristics of stainless steel itself (for example, 304 stainless steel thermal expansion coefficient is low carbon steel and high chromium stainless steel 1.5 times; thermal conductivity of low carbon steel is about 1/3 , While the high-chromium stainless steel thermal conductivity is about low-carbon steel 1/2; specific resistance is low carbon steel more than 4 times, while the high-chromium stainless steel is low carbon steel 3 times.), And carbon steel phase Than the stainless steel welding has its particularity, more easily in its welded joints and heat affected zone (HAZ) produce all kinds of defects. Pay special attention to this when welding. For welding materials such as stainless steel wire, stainless steel wire mesh, etc., where necessary, there are oil removal descaling treatment to improve the welding quality.

TIG welding is the most commonly used welding process for deep-processed stainless steel mesh products. The argon arc is a gas-shielded welding technique. Is around in the arc through the welding
Protective gas argon to isolate the air outside the welding zone, to prevent the oxidation of the pad in order to achieve the purpose of double-sided forming. (Arc voltage of 10V or less, the voltage is generally not adjustable), the welding process to swing the use of zig-zag swing (see Figure 1), the welding process to use the zigzag swing swing, the welding current is about 60A, the current size can be manually adjusted) Way, inter-layer temperature as far as possible, the weld color to white as the standard, welding torch angle in the forward direction of 90 degrees and below angle, the gap in the control of about 2mm.

Welding stainless steel wire mesh, stainless steel welded wire mesh, stainless steel welded wire mesh, etc. It is through the automatic production of stainless steel row welding machine. Stainless steel welded wire mesh production is the use of resistance welding principle to complete the welding of stainless steel mesh: the circuit is closed, making the entire closed circuit and the current is equal everywhere; but the resistance can be different everywhere, especially in the fixed contact Welded wire machine at the highest resistance at the stigma, the resistance is called the physical contact resistance. According to the law of thermal effects of electric current (also called Joule's law), Q = I ^ 2; Rt, we can see that in the case of equal current, the higher the resistance of the part of the higher heat, welding resistance in welding the largest stigma, Part of the natural electric heating is also the largest, when the stigma will be pressed together with the vertical and horizontal diameter diameter when the release of a lot of heat, making the instantaneous diameter of the diameter of the dissolution of bonding. As the row of automatic welding machine is a row of stigma at the same time, so welding stainless steel wire mesh production efficiency is extremely high.

Stainless steel net roll welding technology, also known as seam welding, is a pair of roller electrodes instead of spot welding cylindrical electrodes, welding the workpiece moving between the rollers, resulting in a nest of nuggets welded together to seal the workpiece welding Up method. Generally use AC pulse current or amplitude modulation current, can also be used three (single) phase rectifier, IF, high frequency DC current. Rolling welding widely used stainless steel round hole screen, stainless steel filter cylinder (such as multi-layer oil sand control), high mesh stainless steel mesh docking or sewing links, stainless steel net processing is a commonly used technology.

In the production of stainless steel filters, commonly used to filter the fineness of a number of fine stainless steel filter welding process, because most of these stainless steel wire mesh thin and light, so the need to locate accurate and efficient welding process can be completed. The plasma welding is such an efficient welding technology: Plasma arc ionization gas ionization is to produce high-temperature ion flow, sprayed from the nozzle hole, compressed into a slender arc column, the temperature up toK, higher than Conventional free arc, such as: argon arc welding only up to 5000-8000K. As the arc has a long arc column, the characteristics of high energy density, and thus in the field of stainless steel welding has a broad and special role.

In addition, the silver welding technology in the stainless steel mesh with the welding, soldering technology in a number of electronic components used filter basket basket, there are special applications.