Automotive parts and new energy battery components have high requirements for coating corrosion resistance and consistency. E-coating is the mainstream primer method for automotive parts because of its excellent film thickness uniformity and anti-corrosion performance. Taizhou Yufeng Intelligent Equipment Co., Ltd. plans e-coating lines for automotive parts and new energy component manufacturers, providing reliable e-coating solutions from aluminum battery housings to ordinary steel parts.

E-coating process for aluminum battery housings

New energy battery housings mostly use aluminum. E-coating requires a dedicated pretreatment process. After degreasing, alkaline etching, desmutting and conversion coating, the aluminum surface is e-coated to ensure adhesion and corrosion resistance. Bath parameters are controlled by process, and film thickness is adjusted by voltage and bath concentration. The e-coating film of battery housings also requires good edge coverage and electrolyte resistance.

Process structure of the e-coating line

The e-coating line is organized in the order of loading, pretreatment, e-coating, ultrafiltration rinsing, baking, inspection and unloading. The pretreatment tanks are configured according to material. The e-coating tank uses a rectifier power supply and ultrafiltration system, and the ultrafiltrate recovers rinsing water. The baking oven sets temperature and time according to the e-coating paint curing requirement. The whole line is connected by a crane or conveyor with a unified cycle.

Batch production of automotive parts

Automotive parts have high output. The e-coating line is designed at batch cycle, and rack loading is optimized to increase output per batch. E-coating stability is maintained through bath analysis and filter maintenance. When changing colors or adjusting the process, standard procedures are followed. The inspection station performs film thickness, adhesion, salt spray and impact tests, and records the data.

Environmental protection and energy consumption

The e-coating line is equipped with wastewater and waste gas treatment facilities. The paint recovery system reduces paint consumption. The baking oven uses energy-saving design and waste heat recovery to reduce energy consumption. The production site follows environmental management regulations to meet audit requirements.

Project planning

When planning an automotive parts and new energy component e-coating line, provide the product material, size, output, coating standard and environmental requirements. We design the tank layout, e-coating power supply, conveying and environmental facilities, and provide the equipment list and investment estimate.

For an automotive e-coating and EV battery component line proposal, contact Taizhou Yufeng Intelligent Equipment Co., Ltd. for a professional evaluation.

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