Recently, a professional processing client visited the production plant of Chongqing Chuke Intelligent Machinery Equipment Co., Ltd. (hereinafter referred to as "Chuke Intelligent") to conduct on-site testing, focusing on the need for precise paint removal from galvanized sheets. Chuke Intelligent verified the selective laser ablation process and selective layer-by-layer peeling performance of its equipment on-site, providing a practical process reference for the procurement and selection of automated precision cleaning production lines.
In the current metal component surface finishing industry, paint removal from thin-coated workpieces remains a technological challenge. Traditional chemical paint removal easily generates hazardous waste liquid, resulting in high environmental compliance costs; mechanical sandblasting and grinding have uncontrollable impact forces, easily wearing through the surface galvanized protective layer; conventional continuous laser heat effects are concentrated, and high temperatures can easily burn the base coating, making precise layer-by-layer peeling impossible. This client company requires targeted removal of old paint and protective coatings from sheet surfaces in mass production. The core process requirement is complete peeling of the surface paint layer while perfectly preserving the underlying electroplated galvanized layer. This places stringent standards on the equipment's selective laser ablation layering processing capabilities, spot energy control, and heat-affected zone management.
At the testing site, technical engineers operated a handheld pulsed laser cleaning machine to remove paint from galvanized samples. Utilizing the output characteristics of short-pulse fiber lasers, the equipment precisely controls the energy range, achieving selective peeling by vaporizing only the surface paint. A follow-up air-cooling device removes residual heat in real time, significantly reducing heat conduction damage to the substrate coating and achieving the goal of selective layering at the process level. The client recorded key process parameters such as laser power and scanning speed throughout the process, and captured images of the entire test, allowing for direct comparison of the integrity of the coating in the cleaned area and detailed observation of the surface finish after selective peeling.
After pulsed laser treatment, the surface paint was completely removed from the samples, leaving the galvanized substrate bright and intact, without defects such as burning, peeling, or zinc de-oxidation. The basic layering processing indicators met the client's process standards. The test also objectively revealed the limitations of handheld models: manual operation is susceptible to hand shake and distance deviation, and the stability of the laser spot fluctuates, making it difficult to ensure processing consistency under long-term, high-volume, standardized production conditions. This is why the customer is focusing on the company's automated platform-based cleaning equipment and plans to discuss complete mass production solutions after the sample testing is passed.
With nearly 20 years of experience in the R&D of laser precision processing equipment, Chuke Intelligent has continuously iterated its pulsed laser cleaning product line around selective laser ablation and selective delamination processes. It optimizes process parameters for specific scenarios such as galvanized parts, aluminum alloys, precision molds, and thin film delamination, balancing the two core requirements of cleaning efficiency and substrate protection. In the future, Chuke Intelligent will customize complete selective laser ablation solutions to match the operating conditions of its customers' production lines based on feedback from customer laboratory testing. Supported by actual measured process data, this will help manufacturing enterprises achieve refined and low-loss upgrades in metal surface treatment.