LWG-5200 Electric Spark Welding Repair Machine with Zero Damage to Base Metal Strong Metallurgical Bonding and Precise Digital Control

The LWG-5200 is an intelligent, precision electric spark welding repair machine. It adopts dual-MCU precise control and dual-stabilized inverter high-frequency switching power supply. Based on electric spark deposition technology, it realizes fast defect repair and surface strengthening of metal workpieces. During welding, the base material will not deform or anneal, with high repair accuracy and strong bonding strength. It is widely used for cast steel, cast iron, cast copper, cast aluminum and various metal materials, which is a professional choice for mold, casting and mechanical parts defect repair and surface performance improvement.

• Zero Damage to Base Metal No preheating needed; instant heat input and dissipation ensure no deformation, no annealing, no undercut, no residual stress.
• High-Quality Welding Result Same material with low-temperature welding provides almost no color difference, smooth welding spot, no hard spots, friendly to secondary machining.
• Strong Metallurgical Bonding Ionized welding material infiltrates the substrate, featuring high bonding strength, no peeling, no cracks, no porosity.
• Wide Application Works for ferrous and non-ferrous metals; excellent performance on copper, aluminum and other high-conductivity materials.
• Stable & Efficient Dual-stabilized inverter power supply with efficiency up to 95%+, stable output, fast welding speed.
• Precise Digital Control Dual MCU + digital CPU control for accurate discharge and fine parameter adjustment.
• Anti-Interference Built-in EMI / RFI anti-interference circuit ensures stable operation with other equipment.
• Easy Operation & Maintenance User-friendly for common workers; modular design for simple maintenance and low cost.

• Defect Repair Quickly fixes porosity, pinholes, material shortage, bumps, machining deviations and more.
• Surface Strengthening Coating treatment improves wear resistance, hardness and roughness; ideal for mold coating.
• Precise Discharge Control Dual microprocessors ensure stable and accurate discharge current.
• Wide Adjustable Range Discharge percentage: 10%–100%; Output voltage: 50–100V adjustable.
• High-Efficiency Power Supply Dual-stabilized inverter current-type PWM high-frequency switching power supply, efficiency ≥95%.
• Stable & Reliable Built-in EMI, RFI anti-interference circuits for stable running.
• Multi-Purpose Machine Supports build-up welding, surface strengthening, mold repair and multi-scenario use.
• Standard Interface Design Equipped with power, start, ground and welding torch connectors for easy use.