Definition and principle introduction of battery spot welding machine

Battery spot welding machine, also known as resistance welding machine, uses the principle of electric current passing through the solder joints of the workpiece to produce resistance heat welding.

When working, two electrodes press the workpiece,spot welding machine so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode to the other electrode, an instantaneous thermal weld is formed at the two contact resistance points, and the welding current flows instantaneously from the other electrode along the two workpieces, forming a loop without damaging the internal structure of the workpiece to be welded.

During the spot welding process, the surface of the weldment is cleaned, sent between the upper and lower electrode materials,battery machine and a certain pressure is applied so that it can contact the society well; the contact surface of the two workpieces to be heated is energized, and local melting technology forms a nugget ; Maintain economic pressure after the power is turned off, so that the molten nugget cools and solidifies under pressure to form a solder joint; remove the pressure and take out the workpiece.

Spot welding process parameters such as welding current,cell manufacture electrode pressure, power-on time, and electrode working surface size have a great impact on welding quality.

Battery spot welding machine process

The process of spot welding is to turn on the cooling water; clean the surface of the weldment, accurately assemble and feed it between the upper and lower electrodes, and press it to make good contact; energize the contact surface of the two workpieces to be heated, and locally melt to form a nugget; break After electricity, the pressure is maintained so that the molten nugget cools and solidifies under the pressure to form a solder joint; the pressure is released and the workpiece is taken out.

Preparation and installation of battery spot welding machine weldments:

Before welding steel weldments, all dirt, oil, scale and rust must be removed. For hot-rolled steel, it is best to clean and sandblast the welded area or use a grinding wheel to remove scale. Although uncleaned weldments can be spot welded, the service life of the electrode will be seriously reduced, and the output power and quality of spot welding will also be reduced. Mild steel with a thin coating can be welded directly.

In addition, users can analyze data by referring to the following development process when using:

Welding time: When welding medium and low carbon steel, strong standard welding method (instantaneous charging) or weak standard welding method (long time charging) can be used. Mass production should adopt high-standard welding methods, which can improve production efficiency, reduce energy consumption, and reduce workpiece deformation.

Welding current: The welding current depends on the size, thickness and contact surface of the weldment. Generally, the higher the conductivity of the metal, the greater the electrode pressure and the shorter the welding time. At this time, the required current density also increases.

Electrode pressure: The purpose of applying pressure to the weldment by the electrode is to reduce the contact resistance at the solder joint and ensure the pressure required to form the solder joint.