Equipment Surface Coating Processing: Application of Alumina Ceramic Spraying for Lithium Battery Co
Information summary：In the material handling stage of lithium battery production lines, components are in constant contact with powder raw materials. Their surfaces undergo long-term particle scouring together with corrosion induced by media and powders. Alumina ceramic spraying is a thermal spraying process that forms a ceramic protective layer on the metal substrate of lithium battery equipment. It modifies the phy
In the material handling stage of lithium battery production lines, components are in constant contact with powder raw materials. Their surfaces undergo long-term particle scouring together with corrosion induced by media and powders. Alumina ceramic spraying is a thermal spraying process that forms a ceramic protective layer on the metal substrate of lithium battery equipment. It modifies the physical and chemical properties of the substrate surface to adapt to various working conditions in lithium battery manufacturing.
Prior to spraying, pretreatment is performed on workpieces. Oil stains and oxide layers are removed, and surface roughening is carried out to improve bonding strength between the coating and substrate, lowering the risk of coating peeling during continuous operation. Alumina powder is melted via thermal spraying and deposited at high speed onto component surfaces to form a dense ceramic coating. Coating thickness can be adjusted according to application scenarios to meet varying requirements for wear and corrosion protection.
This spraying treatment can be applied to mixing chambers, conveying pipelines, material distribution parts and powder transfer accessories on lithium battery production lines. The coating resists continuous scouring by powder materials, slows substrate wear and extends component service life. Featuring insulating properties, the coating mitigates static accumulation, complies with static control requirements in lithium battery production, reduces powder adhesion on equipment surfaces and cuts downtime for cleaning.
Alumina ceramic coatings deliver stable temperature resistance. The coating structure remains largely unchanged under temperature fluctuations during line operation and retains surface protection capacity. After surface finishing, the coating achieves low roughness. Less powder adheres when sliding over component surfaces, facilitating on-site cleaning and minimizing cross-contamination caused by residual materials.
The complete spraying service is available for lithium battery equipment components of diverse sizes, covering both small spare parts and large chamber structures. Machining is not restricted by component dimensions or shapes. Coatings can be applied to irregular curved surfaces, corners and inner bores to ensure full coverage of protective layers on all working surfaces.
The machining process proceeds sequentially: workpiece receiving, preliminary surface treatment, spraying and post-treatment. Sprayed workpieces undergo visual inspection and coating condition verification. Only parts free from defects such as peeling and pores are released for production line assembly.
For refurbishment of used line components, worn lithium battery parts can regain surface protection after surface restoration and alumina ceramic spraying. This alternative to purchasing new parts reduces production line maintenance costs. The coating bonds tightly to metal substrates and stays adhered under continuous equipment vibration to support long non-stop operation of production lines.
This surface treatment technology satisfies equipment protection needs across multiple sections of lithium battery manufacturing, including powder preparation, mixing and conveying. It provides surface protection solutions for metal components of lithium battery production equipment to meet the demand for long-term continuous line operation.
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