Crusher Screen Plate Heat Treatment Process-Innally

Product Details

Material Preparation
First, select the appropriate material based on the screen plate design requirements. Typically, high-manganese steel, alloy steel, or other wear-resistant materials are used. The material should meet the corresponding chemical composition and mechanical property standards.
Cutting and Forming
The selected material is cut into the required dimensions and initially formed to prepare for the subsequent heat treatment process. During the forming process, dimensional accuracy and surface finish must be ensured.
Normalizing
Normalizing involves heating the screen plates to an appropriate temperature, generally above the material’s critical temperature, and then cooling them in air. This process eliminates internal stresses in the material, improves its microstructure, and lays a good foundation for subsequent heat treatment. 4. Quenching
Quenching involves heating the sieve plate to an appropriate temperature, holding it for a period of time, and then rapidly cooling it. Water or oil is typically used as the cooling medium. Quenching aims to increase the material’s hardness and strength, but it also makes it brittle.
Tempering
Tempering is necessary to eliminate the brittleness of the quenched material. Tempering involves reheating the quenched sieve plate to a temperature below its critical point, holding it for a period of time, and then slowly cooling it. Tempering adjusts the material’s hardness and toughness to achieve the desired combination of properties.
Surface Hardening
To further improve the wear resistance of the sieve plate, surface hardening treatments such as carburizing, nitriding, or case quenching can be used. These processes create a hardened layer on the sieve plate surface, significantly improving its wear resistance.
Finishing and Inspection
The heat-treated sieve plate undergoes finish machining to achieve the designed dimensions and surface finish. Afterwards, rigorous inspections, including hardness testing, metallographic analysis, and non-destructive testing, are conducted to ensure that the sieve plate meets quality standards. 8. Packaging and Delivery
Qualified screen plates undergo cleaning and rust-proofing, then are packaged and delivered to customers.
Conclusion
The heat treatment process for crusher screen plates is a critical step in ensuring their performance and lifespan. By precisely controlling each step of the heat treatment, the wear resistance and overall performance of the screen plates can be significantly improved, thereby enhancing the efficiency and reliability of the crushing equipment.