The jaw crusher lining is a crucial wear-resistant part of the jaw crusher. It is directly involved in the crushing process of materials and plays a role in protecting the crusher body and other working parts. The following is a detailed analysis of the jaw crusher lining:
1. Function and classification of jaw crusher lining
The jaw crusher lining is mainly divided into fixed jaw lining (tooth plate) and movable jaw lining (tooth plate), as well as side linings (guard plates) located on both sides of the crusher.
• Crushing materials: Cooperating with the movable jaw and fixed jaw, the materials entering the crushing chamber are squeezed, split, and bent to achieve material crushing.
• Protecting the body: Reduce the direct impact and wear of the material on the crusher body and extend the overall service life of the crusher.
• Adjusting the crushing particle size: By adjusting the shape, size and arrangement of the lining, the particle size of the crushed product can be controlled to a certain extent.
2. Material selection of jaw crusher lining
The material selection of the jaw crusher lining has an important influence on its wear resistance, service life and crushing effect.
• High manganese steel: Due to its good toughness and wear resistance, it is widely used in jaw crusher liners. When high manganese steel is impacted, the surface can harden quickly to form a hardened layer with high hardness, thereby resisting wear.
• Alloy steel: Such as chromium-molybdenum alloy steel, etc., with high hardness and wear resistance, suitable for crushing materials with higher hardness.
• Composite materials: With the development of material science, some new composite materials have also been used in jaw crusher liners, such as ceramic composite materials, polymer composite materials, etc. These materials have excellent wear resistance and impact resistance.
3. Installation and maintenance of jaw crusher liners
• Installation: The liner should be installed flat and firmly on the movable jaw and fixed jaw of the crusher to ensure that the gap between it and the crushing chamber is uniform to avoid vibration and noise during operation. At the same time, attention should be paid to the arrangement and direction of the liner during installation to ensure the crushing effect.
• Maintenance: Regularly check the wear of the liner and replace the liner with severe wear in time. When replacing the liner, a new liner with the same material, specification, and performance as the original liner should be selected to ensure the normal operation and crushing effect of the crusher. In addition, attention should be paid to keeping the crusher clean and lubricated to reduce the wear and failure of the liner.
4. Factors affecting the liner of the jaw crusher
The degree of wear of the liner of the jaw crusher is affected by many factors, mainly including:
• Material properties: The hardness, humidity, mud content, etc. of the material will affect the wear degree of the liner. Materials with high hardness will wear the liner more seriously.
• Crusher structure and design: The structure of the crusher, the shape of the crushing chamber, the size of the discharge port, etc. will affect the crushing effect of the material and the wear of the liner.
• Operation and maintenance: The skill level of the operator, the maintenance status of the equipment, etc. will also affect the wear of the liner.
The liner of the jaw crusher is one of the indispensable components of the crusher. Its performance and service life are directly related to the overall performance and economic benefits of the crusher. Therefore, various factors should be fully considered when selecting, installing, and maintaining the liner to ensure the normal operation and efficient crushing of the crusher.
Baichy Machinery is a factory supplier of mining machinery, mainly focusing on stone crushers, powder grinding mills, and mineral beneficiation plants. We can offer you a free design and completed solutions according to your project.
Baichy Heavy Industry has grown into a high-tech mining equipment comprehensive enterprise, integrating R&D, manufacturing, sales, and after-sales service, Passing ISO9001:2015 quality management system certifications. The main products are mobile jaw crushing plants, construction waste crushing plants, PE jaw crushers, VSI sand-making machines, Symons cone crushers, single-cylinder hydraulic cone crushers, PCX high-fine crushers, grinding mills, ball mills, and full sets of beneficiation equipment with an excellent level.
