The door lining plate of the rod mill is one of the important components of the rod mill. Here is a detailed introduction:
Functions
• Protecting the door body: During the operation of the rod mill, the grinding rods and materials will constantly come into contact with the mill door and generate impacts and frictions. The door lining plate can effectively protect the metal surface of the mill door, preventing it from being worn, corroded and deformed, thus prolonging the service life of the mill door.
• Reducing resistance: Its surface is usually relatively smooth, which enables the materials to flow in and out of the mill door more smoothly, reducing the friction and resistance between the materials and the door body, and helping to improve the production efficiency and grinding effect of the rod mill.
• Assisting in sealing: The installation of the door lining plate can fill the gaps between the door body and other components to some extent, enhance the sealing performance of the mill door, reduce the leakage of materials and dust during the grinding process, improve the working environment, and also help to maintain a stable grinding environment inside the mill.
Materials
• Manganese steel: It has relatively high strength and toughness, can withstand large impact loads, and is not easy to crack or deform when impacted by grinding rods and materials. It is suitable for rod mills that process materials with high hardness and large particle size.
• High chromium alloy steel: With a relatively high chromium content, it has good wear resistance, corrosion resistance and oxidation resistance, and can work stably in a harsh grinding environment for a long time, effectively resisting the wear of materials and grinding rods. It is often used in rod mills with high requirements for the wear resistance of the lining plate.
• Rubber: It has good elasticity and wear resistance, can effectively absorb and buffer the impacts of grinding rods and materials on the door body, reduce noise, and also has good sealing performance to reduce dust leakage. However, the strength of the rubber lining plate is relatively low and it is suitable for rod mills that process relatively soft materials.
Structural features
• Block structure: It is composed of multiple block-shaped lining plates spliced together. This structure is convenient for installation and replacement. When a certain lining plate is worn or damaged, it can be replaced individually without replacing the entire door lining plate, reducing the maintenance cost and difficulty.
• Dovetail groove structure: The back of the lining plate is usually designed with a dovetail groove. By matching with the corresponding structure on the mill door body through the dovetail groove, the lining plate can be more firmly installed on the door body to prevent it from loosening and falling off during the working process.
• Surface patterns: In order to further improve the wear resistance of the lining plate and the fluidity of materials, the surface of some door lining plates will be designed with various patterns and protrusions, such as diamond patterns, strip-shaped protrusions, etc. These patterns and protrusions can increase the friction between the materials and the lining plate, make the sliding of materials on the door lining plate more stable, and also disperse the impact force of materials on the lining plate.
Installation and maintenance
• Installation: When installing the door lining plate, it is necessary to ensure that the lining plate fits tightly with the door body without gaps or looseness. Usually, bolts or other reliable connection methods are used for fixation. During the installation process, attention should be paid to ensuring the installation accuracy and position accuracy of the lining plate to ensure its normal operation.
• Maintenance: Regular inspection and maintenance of the door lining plate is an important measure to ensure the normal operation of the rod mill. During the inspection process, it is necessary to observe the wear condition of the lining plate. If it is found that the lining plate is seriously worn, cracked or loosened, it should be replaced or repaired in time to avoid affecting the working efficiency and safety of the rod mill.
Audited Supplier 
){kind=link}