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What should we pay attention to when welding galvanized sheets with DN1S CNC stainless steel spot welding machine?
Wuxi Xinxing Welding Equipment Factory mainly produces: spot welding machines, butt welding machines, flash butt welding machines, medium frequency spot welding machines, energy storage spot welding machines, nut spot welding machines, polymer diffusion welding machines and other resistance welding equipment! QQ online consultationSitemapContact us

Xinxing’s DN1S CNC stainless steel spot welding machine is also considered basic.simple formspot welding machineYes,It is often used to weld environmentally friendly ventilation ducts, that is, galvanized sheet iron workpieces, cold-rolled sheet metal stamping parts, etc. When welding non-galvanized sheets, we need to know the following issues:
1. Difficulties in spot welding of galvanized sheets:
1. The zinc layer has a low melting point and melts faster than the steel plate. The molten zinc metal flows into the gap, increasing the contact surface. The current density becomes smaller, requiring a larger current.
2. When the temperature rises, the zinc layer and the electrode tip often form compounds and stick together. The electrical and thermal conductivity of the electrode tip deteriorates. If the temperature rises further, the electrode will be damaged by contamination and will be damaged, and the zinc layer of the workpiece will be damaged in a larger area.
3. If the zinc layer metal enters the molten steel nugget area, crystallization cracks will occur, so the zinc layer must be extruded out of the welding area before the steel plate melts.
2. Solution:
1. Compared with the welding current of low carbon steel of equal thickness, increase the welding current by 30% to 50%, and then increase the pedaling strength, that is, the electrode pressure can be increased by 20% to 30%.
Compared with low carbon steel, under the same electrode pressure, its spark splash rises much higher, and the slow rise time is increased to prevent splash.
2. Use chromium zirconium copper or aluminum oxide copper electrode for welding, air cooling or water cooling, water cooling is better.
3. Frequently grinding off the compound on the electrode head or using projection welding is the best solution to solve the problem of electrode sticking.
4. Metal vapor and oxide fumes of zinc element are toxic to the human body, so please strengthen ventilation.
Wuxi Xinxing Welding Equipment Factory has focused on resistance welding machines for 29 years and has core technology. Its products include: copper rod and aluminum rod butt welding machines, steel bar butt welding machines, wire rope butt welding machines, copper and aluminum pipe butt welding machines, copper and aluminum row butt welding machines, flange butt welding machines, multi-strand copper wire and aluminum wire butt welding machines, wheel shell flash butt welding machines,Auto parts spot welding machine, sheet metal spot welding machine, home appliance hardware spot welding machine, electronic appliance spot welding machine, nut spot welding machine, stainless steel spot welding machine, foil strip spot welding machine, aluminum spot welding machine, multi-head spot welding machine, bag cage spot welding machine, mesh array welding machine, ton barrel frame welding production line, resistance automatic welding machine, brazing machine, diffusion welding machine, energy storage spot welding machine, projection welding machine, medium frequency array welding machine, There are more than 300 types of automatic welding mesh welding machines, AC seam welding machines, medium frequency seam welding machines, brazing machine diffusion welding machines, spark testing machines, ribbon meter printing machines, high-speed ribbon meter printing machines, unwinding machines, high-voltage test complete sets, etc. If you are interested in our welding equipment, please contact us: 400-001-0502.
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- After-sales phone number:400-001-0502
- Pre-sales phone number:199-5222-1801
- Email:cnhjsb@163.com
- Address:Next to Huaming Bridge, 161 kilometers away from National Highway 312, Luoshe Town, Huishan District, Wuxi City, Jiangsu Province
Good quality pneumatic spot welding machines on the market are generally resistance AC spot welding machines, and the controllers used have three modes: constant voltage, constant heat, and constant current. The factory default is constant voltage mode, but in actual operation, constant current mode is more needed, so it is crucial to master the setting of constant current mode.
How to set the constant current mode?
1. Like the other two modes, start by pressing the power switch "1" at the bottom of the controller, and the panel light will turn on.
2. Press the "Work/Setting" button to switch to the setting state
3. Press and hold the "▼" key on the right side of the controller for 5 seconds to enter the "secondary menu"
4. Press the "▲▼" keys until a single digit appears in the "Parameter Value" position.
5. Press the "+-" key again to adjust the value to "0"
6. Press the "▲" key to select the "A000" state
7. Press the "+" key to increase to 100 or 300 (according to the sampling circle setting)
8. Press the "▲▼" keys again to bring up "b 000", and press the "+" key to bring up "b 001"
9. Turn off the power switch of the controller and restart the switch, and the setting is successful.
At this time, the controller is in the "secondary constant current mode", and the value "3.50" displayed by the welding current is expressed in units of "kiloamps" (i.e. 3.50KA, 3,500 amps).
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