Microcomputer digitally controls welding parameters (current/voltage/timing) for precise welding.
Supports high-frequency, high-efficiency operation and reduces energy consumption.
The core modules and operating procedures of CO2 welding equipment are as follows:
I. Core Modules
Welding Power Supply Module
Provides stable DC or pulsed current (35-350A), uses IGBTs or SiC MOSFETs for high-frequency
switching (70kHz), and achieves efficiency exceeding 90%.
Wire Feed System
A 24V DC motor drives the welding wire (0.8-1.6mm), supporting slow wire feeding for arc ignition
and arc termination.
Gas Shielding System
CO2 gas (18-25L/min) protects the weld pool, and the dual-nozzle design optimizes airflow.
Cooling System
A water-cooling circuit reduces contact tip temperature, and is equipped with a temperature sensor
for monitoring.
Control System
A microcomputer digitally regulates current and voltage, and supports undervoltage and overcur
rent protection.
II. Operating Procedures
Startup Preparation
Check the power supply, gas cylinder pressure (18-25L/min), and wire installation. Parameter
Settings
Adjust the current (35-350A) and voltage (18-39V) according to the material thickness.
Welding Execution
Maintain the nozzle 10-15mm from the workpiece, strike the arc at a 70-80° angle, and move the
welding torch at a constant speed.
Finishing Operations
Close the gas cylinder valve to release any remaining gas and clean the welding torch.
III. Technical Optimization
High Frequency and High Efficiency: The SiC MOSFET supports 70kHz operation, increasing
efficiency to 94.47% and saving 9.8% in electricity.
Energy Savings: The SiC welder can save 2.56kWh of electricity per 8 hours of operation.
