Application Of Laser Cleaning Technology in Weld Pretreatment-QiangYuan Laser-Focus on laser cleaning

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Application Of Laser Cleaning Technology in Weld Pretreatment

Nov 26,2025

In welding processes, the quality of pretreatment of the weld bead area directly affects weld strength and structural safety. Traditional methods such as grinding and chemical cleaning are inefficient, easily damage the substrate, and are difficult to completely remove oxide layers, oil stains, and other impurities. SDQY LASER laser cleaning technology is redefining the standard for weld bead pretreatment with its non-contact, zero-damage, and high-efficiency characteristics.

I. Pre-welding Cleaning: The Cornerstone of Welding Quality
Welding contaminants are the number one "invisible killer" affecting weld quality. Oxide layers and rust can lead to insufficient weld penetration and porosity, severely reducing weld strength; oil and moisture can cause slag spatter and hydrogen-induced cracking, creating safety hazards; coating residues can reduce the purity and corrosion resistance of the weld metal. Traditional cleaning methods, such as angle grinder grinding, can easily cause surface hardening or micro-damage to the substrate; chemical cleaning faces environmental compliance and residue risks. Therefore, a better pre-welding treatment solution is urgently needed.

II. Core Advantages of Laser Cleaning Technology
Laser cleaning uses a high-energy laser beam to precisely remove oxide scale and rust from the weld surface, achieving zero damage to the metal substrate and preserving the original properties of the material. This creates a perfect base for high-quality welding. The cleaning speed can reach 3-5 times that of traditional grinding, making it particularly suitable for batch processing of long welds and complex structural parts. The cleaning process requires only electricity, with no consumables, no chemical waste liquid, and no dust pollution, meeting the stringent requirements of workshop environments.

III. Application Scenarios of Laser Cleaning Technology in Weld Pre-treatment

1. Pressure Vessel and Pipeline Welding: Precisely cleans circumferential and longitudinal weld bevels and lateral areas to ensure high-specification pressure equipment welding quality.

2. Shipbuilding and Marine Engineering: Efficiently treats thick plate welds and curved surface welds, resisting corrosion risks in high-salt and high-humidity environments.

3. Rail Transit Vehicle Body Manufacturing: Removes oxide films from aluminum alloy and high-strength steel welds, ensuring the structural strength of lightweight vehicle bodies.

Laser cleaning technology is revolutionizing efficiency and quality in the field of weld pre-treatment. SDQY Laser, with its advanced equipment and mature process experience, provides the welding industry with cleaner, more efficient, and more reliable pre-treatment solutions, helping companies improve welding yield, reduce overall costs, and create more competitive products.