Solution

Lithium Battery Industry

In lithium battery production, corrosion and wear are two significant issues that pose serious risks to production.

Corrosion: Corrosion in the equipment can severely damage its structural integrity, reducing strength and stability. This deterioration can compromise the functionality of the equipment, making it unable to operate normally and ultimately shortening its lifespan.
Wear: The mixing and dispersion equipment experiences abrasion from the materials during production, which can directly to functional failures. The constant contact and friction during the mixing process can result in wear at friction points. This wear not only decreases the operational lifespan of the equipment but may also generate metal particles. These particles can contaminate the mixing materials, adversely affecting the quality of the lithium batteries.

Addressing these issues is crucial for ensuring the efficiency and longevity of lithium battery production equipment.

Common Solutions in the Lithium Battery Industry:

Chrome Plating: While this method can provide corrosion resistance, the coating is very thin, has poor wear resistance, and is costly. Additionally, it can lead to environmental pollution.
Electrostatic Spraying of Teflon: This method is cost-effective and has a simple processing technique. However, Teflon has poor wear resistance and high-temperature durability, resulting in a short lifespan. The spraying process can also release harmful substances, polluting the environment.
Stainless Steel or Ceramic Liners: Stainless steel has good corrosion resistance but low hardness and poor wear resistance. This can lead to the base materials, such as iron, contaminating the mixing of raw materials. Ceramic liners can increase costs and cause manufacturing difficulties.
Nitriding or Carburizing: While nitriding produces parts with high hardness, wear resistance, and fatigue strength, it results in only a thin surface layer and can cause dimensional changes due to the high temperatures involved.
Surface Thermal Spraying: This method offers several advantages: during the spraying process, the base material does not experience stress or deformation. The hardened composite coatings achieved through thermal spraying provide higher surface hardness, better wear resistance, and corrosion protection. The lifespan of such coatings can exceed that of stainless steel by more than ten times, thereby extending equipment longevity. Additionally, this process does not release metal elements like iron or nickel during friction, effectively improving product purity and reducing battery self-discharge rates, thereby enhancing battery performance.

Solutions:

Our company utilizes supersonic tungsten carbide spraying, employing fully automated robotic arms for uniform and durable coating application on equipment surfaces. After treating the base surface of lithium battery equipment with tungsten carbide, there is a significant improvement in surface hardness and wear resistance. This not only reduces equipment wear but also effectively prevents elements such as iron and nickel from contaminating the raw materials, thereby reducing the self-discharge rate of the batteries.

Jiangsu Yibai Precision Machinery Co., Ltd. has strong thermal spraying technology capabilities and rich processing experience. We welcome all customers to contact us for inquiries.

The application of tungsten carbide coatings provides components with excellent wear resistance, corrosion resistance, thermal insulation, electrical insulation, surface reinforcement, and protection against high-temperature adhesion and damage—characteristics that the base materials do not possess. This extends the lifespan of components and improves their operational efficiency.

We carry out comprehensive tungsten carbide spraying on the internal tank of the dual-shaft spiral mixer and all parts in contact with the materials in lithium battery production. This is crucial because metallic impurities in battery materials can cause self-discharge, puncture the separator, and lead to micro-short circuits. By preparing tungsten carbide coatings for lithium battery equipment, we significantly reduce the wear rate of components and minimize impurities in the materials, ensuring the purity of the battery powder.