Dear Customers, Yuh Shin Electric Co,Ltd. will start Lunar New Year holiday from 14th to 22nd, Feb. During our holidays, we will have limited access to emails. We will reply to your emails within 3 working days on our return on 23rd Feb. We wish you a happy new year, 2026~

Dear Valued Customers, We would like to inform you that the following products will be discontinued from now on andthe product will no longer be in production. All series of YSIW Invert ARC stick welders, warranty service will continue until we are running out of the parts. YSBP Weld Bead Processor BTT107S-12V Battery Tester Electrode Tip Extractors (RO-13-25, RO-16-25, RO-13-35 & RO-16-35) We appreciate your business and support. ...

A resistance welding transformer is a transformer specifically designed for resistance welding. It reduces the voltage of the mains electricity but generates a high current of thousands to tens of thousands of amperes. This uses the resistance between the workpieces to generate heat, melting the metals and joining them. This transformer is highly efficient and fast, and is primarily used in spot/projection welders, seam welders, and butt welders. It is also suitable for difficult-to-weld mater...

Resistance welder, is a device that weld metal materials together using the principle of resistance heating. The working principle Is By applying pressure and passing an electric current through the contact points of the workpieces, the heat generated by the workpieces' resistance melts the metal, which then cools to form a strong spot or seam welding. This welding method is widely used in the automotive, home appliance, sheet metal fabrication, electronic component, metal furniture and c...

1)Resistance Spot Welding: It is a process to join two or more metal sheets by applying pressure and passing an electric current through them. The resulting resistance heating melts the metal at a concentrated spot, creating a fused bond upon cooling. This efficient, cost-effective, and automatable process is widely used in the automotive industry for joining thin sheets. 2)Projection Welding: It is a type of resistance welding that uses pre-designed projections on the workpiece to concen...

1)AC welding power supply: AC welding, characterized by its simple power source that controls the conduction angle of AC current, is generally best suited for easily weldable ferrous materials. However, it has relatively poor thermal efficiency, which can lead to a larger heat-affected zone on the workpiece. For this reason, it is not ideal for high-precision welding applications. 2)DC Inverter welding supply: No current stop time, and it can continuously provide heat energy, with advant...

1)Welding Current: Directly proportional to heat generation, the current impacts weld nugget size. Excessive current can cause expulsions and electrode damage. 2)Welding Time: The duration of current flow is crucial for heat transfer. Both a minimum and a correct time are necessary for a good weld. 3)Welding Force: Proper pressure compresses workpieces, ensuring smooth current flow and good contact. Incorrect force leads to poor weld quality. 4)Electrode Shape: It significantly influenc...

1)Tensile-shear test: Measures the force required to break the weld, which indicates its strength. 2)Peel test: Examines the fracture shape and nugget size to assess overall weld quality. 3)Chisel test: Used when a peel test is not feasible. A chisel is driven between sheets next to the weld to check its integrity. 4)Bend test: Verifies component performance under stress by bending the welded part. By conducting these destructive tests on the parts, you can establish the optimal weld p...

We offer a one-year warranty for our welding equipment and welding transformer, effective from the Bill of Lading issued date. The warranty does not cover defects or malfunctions resulting from natural disasters or human factors such as misuse, abuse, improper maintenance, failure to follow operating instructions, or use with unintended equipment. Additionally, the warranty does not apply to damage caused by unauthorized alterations, modifications, or repairs to the product. The warranty also ...