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How Do Laser Welding Machines Reduce Welding Thermal Stress?
szhaiwei
2025-12-16
Thermal stress from welding can cause material deformation or cracks, a key concern for buyers choosing laser welding machines. The good news is that modern laser welding machines offer practical ways to minimize this issue through targeted settings and techniques.
Optimize Laser Parameters
Adjusting core parameters of the laser welding machine is the first step. Lowering heat input by fine-tuning power and increasing welding speed reduces the time materials are exposed to high temperatures. Pulsed laser modes, rather than continuous wave, deliver energy in controlled bursts, limiting heat spread and stress buildup—ideal for thin or heat-sensitive metals.
Choose Suitable Welding Techniques
Laser welding machines support techniques like seam tracking and wobble welding that cut down stress. Seam tracking ensures the laser follows the joint precisely, avoiding unnecessary heat application. Wobble welding distributes energy evenly across the weld area, preventing localized overheating and uneven stress distribution.
Use Auxiliary Cooling and Material Prep
Pairing the laser welding machine with simple cooling solutions (like forced air or water cooling) helps dissipate heat faster. Additionally, preheating materials moderately (for thicker workpieces) or cleaning surfaces to remove contaminants ensures more uniform heat absorption, reducing stress concentration.
When selecting a laser welding machine, prioritize models with flexible parameter adjustment and compatible technique support. These features let you tailor operations to your materials, minimizing thermal stress and ensuring consistent, high-quality welds for your production needs.
For reliable thermal stress reduction, choose Haiwei Laser’s laser welders—precision controls and optimized tech deliver consistent, high-quality welds.
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