The surface of jaw crusher liner is generally made of tooth shape, and the arrangement of teeth is that tooth peaks and valleys of movable jaw plate and fixed jaw plate are opposite. In addition to crushing the ore, it also has a chopping and breaking effect, which is good for crushing the ore, but it is also relatively easy to wear. It must be replaced within a certain period, otherwise it will reduce the efficiency of the equipment, increase the load of the machine, and reduce Yield. Sometimes there will be fractures. The following is a brief summary of the 6 major reasons that constitute the fracture of the jaw crusher lining:
1. Movable jaw plate fails to pass the forging process when it is produced, and there are many defects such as pores on movable jaw plate, so defects such as breakage and breakage will occur after a period of use.
2. When jaw crusher enters the broken object, the impact pressure of the equipment increases, and toggle plate does not carry out the function of self-breaking maintenance, but transmits the strong impulse to the moving jaw plate.
3. The displacement of movable jaw plate occurred during operation, and the bottom of movable jaw plate collided with the frame guard plate and other parts, causing the fracture of the movable jaw.
4. The tension rod spring is out of effect, and the dynamic jaw pressure becomes larger.
5. The interval between movable jaw plate and fixed jaw plate determines the size of the discharge opening. When the discharge opening is unreasonable in size, it will also constitute a fracture defect of the movable jaw.
6. The feeding method is unreasonable, so that the falling of the material increases the impact pressure on the moving jaw.
After jaw crusher liner breaks, the equipment cannot operate normally. What should I do?
1. Replace the movable jaw plate with good quality.
2. When changing to new movable jaw plate, a new toggle plate and toggle plate pad components must be replaced.
3. After changing to the new movable jaw, adjust the position and connection of the misaligned shaft, bearing, tightening bushing and movable jaw.
4. Replace with a new lever spring or adjust the tension of the lever spring. Adjust the size of the discharge port.
5. The jaw crusher must ensure the continuous and stable feeding of the material during the task, and reduce the impulse of moving jaw plate due to the gravity of the material falling freely through the feeding struggle.
In the early stage of wear of liner of jaw crusher,tooth plate can be turned around, or the upper and lower parts can be turned around. The wear of jaw plate is mostly in the middle and lower part. When the tooth height is worn down by 3/5, a new liner needs to be replaced. When liner on both sides wear out by 2/5, they also need to be replaced.
Shanvim Industry (Jinhua) Co., Ltd., established in 1991. The company is a wear-resistant parts casting enterprise. The main products are the wear-resistant parts such as mantle, bowl liner, jaw plate, hammer, blow bar, ball mill liner, etc.. There are medium and high , Ultra-high manganese steel, medium carbon alloy steel , low, medium and high chromium cast iron materials, etc.. It mainly produces and supplies wear-resistant castings for mining, cement, building materials, infrastructure construction, electric power, sands and gravel aggregates, machinery manufacturing and other industries.
Post time: Jun-21-2022