A high-efficiency bumper paint shop by Dürr
Chonqing, April 2017 – Dürr China has successfully handed over a complete bumper paint shop to Chongqing Guangnengrongneng Automotive Trim Company. The paint shop in Chonqing, complete with Dürr’s process equipment, painting robots, paint supply system and exhaust-air purification system, is one of the turnkey bumper paint shops installed by Dürr in China.
Designed with an annual capacity of 450,000 bumpers, the bumper painting line offers high efficiency, thanks Dürr’s advanced technologies. Bumpers, which are conveyed on skids, pass through several stages of water rinsing and degreasing, flame treatment and three paint applications, followed by drying to complete the process.
Nine EcoRP L033 robots are used for flaming and the application of primer, base coat and clear coat. All the painting robots are equipped with compact and highly efficient EcoBell3 atomizers, along with four special EcoSupply P paint supply systems. This combination greatly reduces paint loss and flushing agent, shortens paint change time, and thus helps to lower the customer’s production costs.
In the spray booth, Guangneng opted for Dürr’s upgraded EcoEnvirojet3 wet scrubber, which is a good alternative to dry separation. The system is easy to operate, clean and maintain, and perfectly suitable for low overall heights like bumpers.
Dürr’s proven regenerative thermal oxidation technology, Ecopure® RTO, is used here for VOC treatment, and successfully reduces TOC emissions below 20mg/Nm3 for the spray booth, meeting local emission and EU standards.
For Chongqing Guangneng, its first fully automated painting line improves the overall quality of its products. In the extremely short time of seven months from the day the contract was signed until the first bumper rolled off the line, Dürr delivered a high-quality result. This emphasizes Dürr’s strength as a turnkey supplier.
Chongqing Guangneng was very impressed by the efficiency and the professionalism of the Dürr team as well as by their smooth communication. The good cooperation between Guangneng and Dürr currently continues at the new plant in Hangzhou, which will be launched later this year.