Spot Welding Machine

Classification of spot welding machines

1. According to the use can be divided into universal type, special type Spot Welding Machine;
2. According to the number of welding joints at the same time is divided into: single point, double point, multi-point;
3. According to the conduction mode can be divided into: unilateral, bilateral;
4. According to the transmission mode of the pressure mechanism, it is divided into: pedal type, motor-cam type, pneumatic type, hydraulic type, compound type (gas-hydraulic combination);
5. According to the characteristics of the operation is divided into: non-automation, automation;
6. According to the installation method is divided into: fixed, mobile or portable (hanging) spot welder;
7. According to the moving direction of the active electrode (usually the upper electrode) of the welding machine, it is divided into: vertical stroke (the electrode moves in a straight line) and circular stroke.
8. According to the nature of welding power supply is divided into three categories: 1, AC Spot Welding Machine; 2, energy storage spot welding machine; 3, DC spot welding machine.

AC Spot Welding Machine

Precision AC Spot Welding Machine generally refers to the power of 16KVA below the spot welding machine, mainly desktop, usually divided into foot and pneumatic two, the welding machine uses alternating current discharge, and on this basis, respectively using a single pulse, multi-pulse, frequency, time, program and other control methods. Can also implement single point welding, welding automatic control, human control, complete specifications. Mainly used in tungsten, molybdenum, iron nickel, aluminum, stainless steel, silver and other metal sheet, wire, bar material welding.

High-power AC spot welding machine generally refers to the power of more than 16KVA spot welding machine, mainly vertical pneumatic, high-power AC spot welding machine performance characteristics: Direct pressure mechanism, good following performance, fast welding speed, long service life, low noise and safety, easy to use the water-saving forced cooling method of high solid strength of the body structure upper insulation simple and practical main circuit using high-power SCR contactless switch high conductivity, low power loss, in the domestic AC spot welding machine in the secondary current circuit, The upper and secondary output of the main transformer adopts multi-layer flexible copper tape with high toughness and high conductivity, and is connected in U-shape. The service life is greatly improved, and the integrated direct connection mechanism is used for the lower and secondary outputs, and the current loss is minimized. The main circuit of the welding machine adopts water-cooled high-power thyristor, and the output power supply is strong, stable and reliable. It is rigid and resistant to shock and vibration, and can prevent the electrode head from sliding when pressurized to achieve stable welding. Mainly used in hardware, mechanical and electrical, automotive industry. The welding precision and welding performance of the AC machine are higher than that of the energy storage machine.

Energy Storage Spot Welder

Precision energy storage spot welding machine, this series of spot-welding machine uses capacitor energy storage charge and discharge welding, with a small impact on the power grid, welding current concentration, fast release speed, strong penetration, welding surface heat affected zone is small, suitable for copper, nickel, stainless steel, iron and other metal sheet, wire, rod welding. And all kinds of small relays, low-voltage electrical and reed, silver contacts, copper wire welding.

High-power energy storage spot welding machine generally refers to the power of 800J (Joule) above the energy storage spot welding machine, features: wide use, in addition to the general soft iron, stainless steel, copper and aluminum, alloy and general non-iron metal can be welded, and welding performance is excellent. Because the output and input are completely separated, it is not affected by external power supply changes and maintains a constant power output.

The product performance is worse than that of DC and AC Machines, and the appearance and welding firmness of the solder joints are OK, which is suitable for the processing of products with not high appearance requirements. The disadvantage is: energy storage, energy storage, as the name suggests, is to store electricity in the capacitor of the device, which needs to be charged before each discharge, and the capacitor needs to be replaced after the device is used for a period of time.

Inverter DC Spot Welding Machine

The principle of DC spot welding machine is to convert alternating current into direct current through technology for welding.

As we all know, the electricity we use, whether it is household or factory electricity is AC, that is because the advantage of AC is easy to transport and cheap, its advantage is the disadvantage of direct current, its disadvantage is the advantage of direct current, they are complementary, direct current relative to alternating current used in the equipment is more stable and safer. As with the AC machine, the DC machine is also more desktop, usually divided into foot and pneumatic two, the welding machine uses direct current discharge, can respectively use a single pulse, multi-pulse, frequency, time, and other control methods. Can also implement single point welding, welding automatic control, human control, complete specifications. Mainly used in tungsten, molybdenum, iron, nickel, aluminum, copper, stainless steel, silver and other metal sheet, wire, bar welding.

The advantages of DC welding machine compared with AC and energy storage welding machine are: compact structure, smaller volume, strong overload capacity, low energy consumption, superior performance, and higher welding precision. The disadvantage is that its cost is a little more expensive than the first two kinds of welding machines.