Article
Butt welding is resistance welding, also called contact welding. It is a metal connection method that presses the workpiece between the electrodes of the welding machine and energizes the workpiece itself to generate resistance heat. The resistance heat accumulates to the temperature of plastic deformation, and then is vertically pressurized or transversely forged. A metal connection method.
It includes:spot welding, butt welding, projection welding, seam welding (roll welding) and other welding methods. Spot welding, projection welding and seam welding are vertical pressure type, and butt welding is transverse forging type.
Spot welding and seam welding are mostly used on 0.1~4mmr medium and low carbon steel, stainless steel, copper, and aluminum sheets, while projection welding is used on stacked welding rods and metal plates with bumps, and butt welding is used for metal butt joints of rods, flat bars, and T-shaped bars.
The advantages are:
1. High thermal efficiency Utilizing the internal resistance heat source of the workpiece itself, the heat loss is relatively small, the thermal efficiency is relatively high, and energy saving is achieved.
2. The weld is dense The weld of resistance welding is solidified and crystallized under the action of external pressure. It has the characteristics of forging and belongs to the category of pressure welding. Therefore, it is easier to avoid defects such as shrinkage cavities, looseness and cracks, thereby obtaining a dense weld.
3. Low welding cost There is no need for flux or gas protection during welding, and there is no need to use filler metals such as welding wires and electrodes, so welding joints with better quality can be obtained and the welding cost is low.
4. Small deformation and stress Due to the concentrated heat and short heating time, the heat affected zone is small, and the deformation and stress are also small. Usually there is no need to consider correction or heat treatment procedures after welding.
5. Simple operation One-button operation makes it easy to realize mechanized and automated production, does not require high proficiency of workers, and has low labor intensity.
6. Less slag inclusion and good welding effect When the nugget is formed, it is always surrounded by a transparent plastic ring, the molten metal is isolated from the air, the metallurgical process is simple, and the welding effect is good.
7. High productivity Low noise, basically no smoke and dust, and good working conditions. It can be combined with other manufacturing machines to form an automatic production line for mass production. Only flash butt welding requires some isolation due to spark splash.
Wuxi Xinxing Welding Equipment Factory has been engaged in resistance welding for 29 years. Its core technology products include: semi-automatic butt welding machine, pneumatic-flash butt welding machine, multi-strand wire welding machine, foot spot welding machine, pneumatic spot welding machine, medium frequency spot welding machine, row welding machine, mesh welding machine,Resistance automatic welding machine, energy storage welding machine, copper rod and aluminum rod disc circular welding machine, auto parts spot welding machine, sheet metal spot welding machine, home appliance hardware spot welding machine, small electrical appliance spot welding machine, copper row copper pipe welding machine, nut spot welding machine, stainless steel welding machine, foil strip spot welding machine, aluminum spot welding machine, multi-head spot welding machine, bag There are more than 300 types of cage spot welding machines, mesh welding machines, ton rack welding production lines, resistance automatic welding machines, brazing machines, diffusion welding machines, projection welding machines, seam welding machines, wire and cable optical cable supporting equipment, etc. If you are interested in our welding equipment, please contact us.