Liner / Impact Plate / Apron - 2
Our Services
1.Before sales, we will fully understand the customer's working conditions and recommend the most appropriate material selection to the customer.
2.Provide customers with drawings based on their machine models, spare parts dimensions, etc.
3.After sales, we will continue to pay attention to the usage of the product and provide timely help.
4.Ensure that the quality of the purchased components is impeccable, and the technical parameters absolutely meet national standards.
5.Provide free quotation, worldwide sales, short delivery cycle, low price.
The impact plates (also known as blow bars aprons or impact aprons) of an impact crusher are among the core wear parts in crushing equipment. They not only directly affect the crushing efficiency and output particle size but also play a crucial role in protecting the main body of the equipment.
1. Core Functions
Secondary Crushing and Efficiency Improvement: After being struck by the rotor blow bars, the material impacts the impact plates at high speed. The plates rebound the material back into the crushing chamber, where it collides again with incoming material and blow bars, achieving secondary crushing and significantly boosting crushing efficiency.
Adjusting Output Particle Size: By adjusting the gap between the impact plates and the rotor, the size of the final product can be precisely controlled.
Protecting the Main Equipment: As wear parts, the impact plates bear the intense impact and abrasion from the material first, thereby protecting more expensive internal structures like the frame from damage.
2. Common Material Selection
The material of the impact plates determines their wear resistance and service life. The choice is usually based on the characteristics of the crushed material (such as hardness and silica content):
High Manganese Steel (e.g., ZGMn13-2): Features excellent toughness and impact resistance. Under intense impact, its surface undergoes work hardening to form a highly wear-resistant layer, while the inner core remains tough. It is suitable for crushing medium-hardness materials.
High Chrome Cast Iron / High Chrome Alloy: Possesses extremely high hardness (up to HRC58-65), with wear resistance typically 3 to 5 times that of high manganese steel. It is ideal for crushing hard and highly abrasive materials (e.g., granite and basalt).
Multi-Alloy Casting: Incorporates appropriate amounts of elements like Molybdenum (Mo), Nickel (Ni), and Titanium (Ti), combined with specialized heat treatment processes. This ensures high wear resistance while maintaining good toughness and impact resistance.
Composite Materials: Utilizes high-wear-resistant materials in the most severely worn areas and tough materials in other areas, achieving an optimal balance between performance and cost.
3. Structural and Installation Design
To withstand high-intensity impacts, modern impact plates are continuously optimized in structural design:
Anti-Drop and Anti-Hollow Design: Traditional bolt fastening can easily loosen or break due to material impact. Newer impact plates often feature sliding grooves on the back, working with sliders, protruding blocks, and filler blocks for a seamless fit. This prevents internal hollow spaces that could cause the plate to shatter upon impact.
Shock Absorption and Noise Reduction: Some impact plates have a rubber shock-absorbing layer at the bottom of the main body, which effectively buffers the impact force from the material, protects the frame, and reduces operating noise.
Surface Shape Optimization: The front surface of the plate is often designed with stepped blocks or corrugated patterns. This reduces the contact area between the material and the plate, increases the probability of crushing, and extends the plate's lifespan.
4. Maintenance and Replacement Tips
Regular Inspection and Replacement Criteria: A regular inspection system is recommended. The impact plate must be replaced immediately if wear exceeds 30%, if the wear approaches the nuts of the countersunk bolts, or if the plate fractures.
Flipping to Extend Lifespan: If the plate is worn on only one side without fracturing, it can be flipped 180° or rotated 90° to maximize material utilization.
Replacement Precautions: Before replacing the plate, the machine must be shut down and powered off, and the securing cotter pins, slotted nuts, and bolts must be removed. When installing the new plate, the fixing bolts must also be replaced and tightened strictly according to the specified torque (e.g., 270 N·m). After installation, the machine should run idle for 5 minutes to check for any abnormal noise or vibration.
Relevant parts
Auxiliary Throw Tip, Secondary Rotor Tip, Auxiliary Tip
- Categories : Sand Making Machine
- Customization Available : Yes
Service Process
The company's sales network covers all major cities across China, while our R&D and manufacturing products have reached numerous countries and regions in Southeast Asia, the Middle East, Africa, Europe, and beyond, earning widespread acclaim from customers worldwide.
FAQs
We have 30+ years of industry experience, a professional team of engineers, strong production strength and mature equipment.
The company has a complete accessory system to provide you with reliable and fast accessory services, complete models, high-quality and durable accessories.
Engineers personally go to the site for technical training in installation, operation and maintenance to help you solve installation and operation problems.
We provide lifelong service for the equipment we sell, including post-maintenance services.
We have professional technical experts and service teams to tailor solutions for each customer.
The mainframe is designed for continuous heavy-duty operation. Wear parts such as jaw plates, liners and blow bars are made of high-manganese steel or alloy materials, and their service life depends on the material hardness and working hours.
Every machine goes through material inspection, machining inspection, assembly and a full no-load test run before shipment. Inspection records and test videos are provided to customers.
Warmly welcome. You can visit our manufacturing base in person, and remote video inspection is also available for customers from overseas.
Yes. Package orders of a full line or multiple machines usually receive a more favorable price and priority in the production schedule.
Large mainframes are shipped by sea in containers or bulk vessels; smaller machines and spare parts go by container, air freight or international express, with full packaging for moisture and rust protection.