New Equipment for the Resistance Welder

After 137 years, resistance welding continues to be a tried-and-true process. Thanks to advancements and new equipment, such as the ones included here, resistance welding continues to be at the forefront of many industries.

AWS Publications | March 28, 2022 | Tech and Industries
Welding Digest ►  New Equipment for the Resistance Welder

After 137 years, resistance welding continues to be a tried-and-true process. Thanks to advancements and new equipment, such as the ones included here, resistance welding continues to be at the forefront of many industries.

 

Spot Welding Machine Ensures High Precision

Created by Emerson Electric Co. (emerson.com), the Branson™ GMX-20MA ultrasonic metal spot welding machine enables high-precision joining of nonferrous metals, including busbars, foils, switches, and wire terminations in automotive electrical systems, electric vehicles, batteries and battery packs, and power storage systems. It features a rigid pneumatic actuator with dual-linear bearings and a digital load cell to achieve smooth vertical motion and precise downforce control for maximum weld quality and repeatability. The spot welding machine also uses a linear encoder to track and measure actuator travel and tool position relative to the welded parts. Once tooling/part contact is made, a digital load cell measures and maintains a precise level of actuator downforce on the parts. This ensures that weld energy is accurately delivered and weld quality remains consistent from one weld to the next. Additionally, its programmable controls allow operators to manage the welding process in multiple modes: time, energy, peak power, and distance.

Lead photo: The Branson GMX-20MA ultrasonic metal spot welding machine by Emerson Electric Co.

 

Resistance Weld Checker Facilitates Production

Produced by Amada Weld Tech (amadaweldtech.com), the MM-410A handheld resistance weld checker monitors and troubleshoots issues in production. It can be used to correlate waveform and numeric data with process results as well as attain detailed weld data for process optimization and validation. If used continuously in a production environment, the unit reduces scrap by detecting drifts in the weld process and alerting operators before process failure. It also reduces the frequency of destructive testing and offers an independent way of monitoring the welding power supply. The compact unit supports a range of resistance welding technologies, including alternating current (AC), direct current inverter, AC inverter, transistor, and capacitive discharge. It is compliant with International Organization for Standardization (ISO) 17657, Resistance welding — Welding current measurement for resistance welding, when used with an ISO-compliant toroidal coil. Additionally, it features an intuitive user interface and a color touch panel display to deliver information on current, voltage, weld time, and force.

Photo 2-2The MM-410A handheld resistance weld checker by Amada Weld Tech.

 

Resistance Welding Machine Approved for OEMs

Made by Robaina Industries Inc. (robainaindustries.com), the TECNA 3664P Smart-Plus resistance spot welding machine maintains original equipment manufacturer (OEM) approval by most automakers. It comes with software specific to the automaker and is designed for both the assembly line and collision repair shop. The spot welding machine automatically determines the thickness and type of steel to be welded; automatically sets all welding parameters, including output power, weld time, and squeeze force; monitors and adjusts weld settings 2000 times per second to produce a factory-quality weld; and comes fully water-cooled, including transformer, welding gun, arms, and electrodes caps.

Photo 3-2The TECNA 3664P Smart-Plus resistance spot welding machine by Robaina Industries Inc.