Optimization Design and Maintenance Points of Jaw Crusher Wearing Parts
Release time:
2025-05-02 08:08
The core working parts of a jaw crusher consist of a moving jaw plate and a fixed jaw plate. During the crushing process, they bear tremendous impact force and material friction, making them prone to wear. To improve equipment durability, Duma Machinery adds wear-resistant liners (also known as crusher plates) to the surface of the moving and fixed jaws, effectively extending the service life of the equipment.
1. Optimization of crusher plate structure
Manganese jaw plate (Mn13 material) is usually designed with a tooth structure, with the tooth peak angle between 90° and 120°. The specific value needs to be adjusted according to the material hardness and crushing particle size:
● Large material crushing: Use a larger tooth peak angle to enhance impact resistance
● Small material crushing: Use a smaller tooth peak angle to improve crushing efficiency
● Tooth spacing design: Usually 1/2 to 1/3 of the discharge port width, directly affecting the discharge particle size
Due to Jaw crusher wear parts The stress is uneven during operation, and the wear rate of the lower part is much higher than that of the upper part. Therefore, optimizing the liner structure is crucial to extending the service life.
2. Material selection and heat treatment process
Currently, manganese jaw plates (Mn13) are an excellent choice for jaw crusher wear parts, with advantages including:
✔ High toughness: Hardness is about 210HB, but it has cold work hardening characteristics, constantly strengthening under continuous pressure
✔ Wear resistance: Surface hardness increases during wear, significantly extending service life
✔ Water quenching treatment: Heated to 1000-1100℃ and then quickly cooled to stabilize the microstructure and prevent performance degradation
Although Manganese jaw plate The cost is higher, but considering the overall service life and maintenance cost, its cost-effectiveness far exceeds that of ordinary materials.
3. Design improvements and maintenance strategies
● Optimization of moving jaw plate and fixed jaw plate: Using a design where the tooth peaks move towards the tooth valleys, allowing materials to be simultaneously squeezed and bent, improving crushing efficiency
● Symmetrical structure: Small crushers use symmetrical wear-resistant liners, which can be interchanged after wear; large equipment needs to optimize stress distribution
● Regular maintenance: Check the wear of the crusher plates, adjust or replace them in time to avoid affecting production efficiency due to excessive wear
Conclusion
Jaw crusher wear parts The reasonable design and selection of materials (such as manganese jaw plates, moving jaw plates, fixed jaw plates, and wear-resistant liners) directly affect the service life and operating costs of the equipment. Duma Machinery, with its advanced material technology and structural optimization solutions, provides customers with high wear resistance and long-life crusher plate solutions. Welcome to consult and cooperate!
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The main products of Duma Machinery include: rolling mortar wall, crushing wall and material dividing plate of cone crusher; jaw plate, side guard plate and pressing strip of jaw crusher; lining plate of ball mill, autogenous mill and other equipment; plate hammer and impact plate of impact crusher; hammer head, screen strip, lining block and other wear-resistant alloy steel parts of metal crusher.
Contact Information
Jiangxi Duma Machinery Manufacturing Co., Ltd.
Address: No.15, Jinhui Road, High-tech Zone, Yushan County, Jiangxi Province
Mobile:13957606188
Telephone:0793-2238555
Mailbox:ceo@dumajx.cn
Chinese website:Duma. Website Wear parts. Website
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