Common Methods of Mold Repair！

Molds are of vital importance in industrial production. However, issues such as wear and cracks occur frequently. How should one choose the right welding repair technology? As a leading brand in the field of mold welding equipment, San Laser. This article will provide a detailed introduction to the most common mold repair welding methods and offer professional solutions.

1. Laser Welding: The First Choice for High-Precision Repair
Applicable Scenarios: Precision injection molds, die-casting molds, molds with high surface finish
Advantages:
✅ Ultra-high precision (error < 0.1mm), suitable for the repair of tiny cracks
✅ Small heat-affected zone, reducing the risk of mold deformation
✅ Compatible with automation, and can be used with robotic arms for batch repair

0. Tungsten Inert Gas Welding (TIG): A Universal Welding Solution
Applicable Materials: Stainless steel, aluminum alloy, copper alloy, etc.
Advantages:
✅ High welding strength, suitable for molds that bear high stress
✅ Widely available equipment and relatively low operation threshold
✅ Capable of repairing large-area damage
Expert Tips:
• The preheating temperature needs to be strictly controlled (for example, H13 steel needs to be preheated to 300-500℃)
• Pulse TIG welding is recommended to reduce thermal deformation

0. Cold Welding Technology: A Special Solution without Thermal Deformation
Applicable Scenarios:
• Thin-walled molds (such as electronic connector molds)
• Heat-treated molds (to avoid secondary annealing)
Advantages:
✅ Welding at room temperature, without thermal stress
✅ No need for subsequent processing, saving time
Disadvantages:
❌ The bonding strength is relatively low (about 60-70% of the base metal)
❌ Only suitable for the repair of non-stressed parts

0. Other Emerging Technologies
4.1 Friction Welding
• Heat is generated through mechanical friction, suitable for the welding of dissimilar metals
• Typical case: Repair of mold inserts
4.2 Electron Beam Welding (EBW)
• Carried out in a vacuum environment, suitable for aerospace-grade molds
• Expensive equipment, limited to high-end fields

0. Why Choose San Laser's Welding Equipment?
• Low operation difficulty: The optical path movement direction can be remotely controlled through a three-axis operating lever, saying goodbye to manual adjustment of the optical path.
• Proprietary technology: The split operation design allows you to frequently adjust parameters at a distance of up to 4 meters.
• Global service: Provide 24-hour remote technical support.

The new mold repair welding machine of the 2025 model is now on hot sale. Come and experience the brand-new and ultra-precise mold repair experience!

Get professional support now

 [www.san-laser.com]

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Fiber Laser Welding Machine