Hidden Porosity Risks in Pre‑Weld Treatment? Laser Cleaning for New‑Energy Components in Three Core Scenarios

With growing export volumes of new‑energy vehicles, manufacturing capacity for power batteries and electric drive systems faces great challenges. For joining procedures of key components such as motor housings and battery trays, base‑material surface conditions directly determine final welding quality. Residual oil, oxide films or anti‑rust layers may introduce impurities into high‑temperature molten pools, triggering frequent porosity and poor bonding, and sharply reducing non‑destructive‑testing pass rates. Conventional manual grinding and chemical pickling suffer low efficiency, inconsistent results and severe environmental‑compliance pressures. Efficient, non‑damaging surface pre‑treatment has become an urgent challenge for many manufacturers.

Case Study: Cleaning Process Upgrade at a New‑Energy Component Manufacturer

A well‑known supplier for new‑energy electric‑drive systems long suffered porosity defects caused by incomplete surface cleaning on aluminum motor housings and battery trays. Conventional chemical cleaning generated high waste‑liquid disposal costs. After multiple rounds of process validation, the enterprise adopted Eagle Laser cleaning machines for full production‑line upgrade.

Breakdown of Three Core Application Scenarios

① Pre‑joining treatment for battery trays: Precise oxide‑film removal for stable molten pool
Aluminum alloy readily forms dense oxide films with melting points above 2000℃, which degrade molten‑pool fluidity during welding. By adjusting pulse parameters, Eagle Laser cleaners use photothermal effects to instantaneously expand and strip oxide layers. Cleaning width and depth are precisely controlled. Oxides are fully removed without damaging the aluminum substrate, creating a clean bonding interface and drastically lowering porosity rates.

② Pre‑treatment for motor housings: Efficient oil removal to guarantee sealing performance
Machined housings often retain cutting fluid and anti‑rust oil. Conventional wiping may lead to secondary contamination. Eagle Laser delivers non‑contact cleaning: laser beams rapidly vaporize residual oil. The process is consumable‑free and wastewater‑free. Single‑part processing cycle falls below 15 seconds, eliminating sealing‑failure risks originating from trapped oil films.

③ Removal of welding spatter and thermal discoloration as an alternative to manual grinding
Laser cleaning works excellently for post‑processing welding spatter and heat‑induced discoloration. By setting specific energy thresholds, only surface discolored layers and spatter are removed while preserving original substrate texture. Tasks taking skilled grinders 5 minutes can be finished within 1 minute by ordinary operators with laser cleaning guns. Highly uniform surface roughness meets delivery standards for high‑grade appearance parts.

Verified Field‑Test Data

After reconstruction, the workshop’s one‑time NDT pass‑rate rose from 82% to over 98%. Each production line saves more than 300,000 RMB annually on chemical reagents and waste‑liquid disposal, realizing genuine green smart manufacturing.

Three Major Strengths of Eagle Laser Cleaning Machines

① Core‑component collaboration and superior beam quality: Cooperating with leading domestic laser suppliers, Eagle Laser cleaning equipment achieves high electro‑optical conversion efficiency and stable beam output. Cleaning performance does not degrade during long‑hour continuous production.

② Rich parameter library for one‑click recall: Pre‑loaded cleaning parameters for aluminum, steel, copper and other materials. Operators can match optimal pulse frequency and power for oxide or oil layers of varying thickness without complex tuning, lowering dependence on highly‑skilled workers.

③ Ready for automation integration for flexible production lines: Standard communication interfaces support easy connection with robotic arms or gantry modules. Automated cleaning for 3D curved surfaces and complex workpieces fully satisfies high‑speed flexible‑manufacturing requirements of new‑energy production lines.

Free Sample Testing — Witness the Power of Laser Cleaning

Seeing is believing. If you struggle with low surface‑treatment efficiency, environmental‑compliance pressure or limited forming yield, send workpieces to Eagle Laser laboratory. We provide free sample testing and professional process‑evaluation reports.

About Eagle Laser

Changchun Eagle Laser Equipment Co., Ltd. is located in Changchun, birthplace of China’s first laser. As a high‑tech enterprise within Changchun New District Optoelectronics & Intelligent Manufacturing Industrial Park, it leverages local optoelectronic industry and research‑institute resources. The company focuses on R&D and manufacturing of laser welding, cutting, marking and cleaning equipment. It holds 2 invention patents and more than 20 utility‑model patents and software copyrights. Its products serve automotive manufacturing, precision machinery, advertising sheet‑metal and other sectors and are sold worldwide.

Inquiry Hotline: 132 3430 6142
Email: sales01@flelaser.com
Website: www.flelaser.com
Douyin: flelaser (Watch real‑world product videos)
Address: No. 2888 Zhongsheng Road, North Lake Sci‑Tech Development Zone, Changchun City, Jilin Province