The reason for the high maintenance cost of jaw crusher
The new jaw crusher produced by our company is a new type of crushing machine designed by combining the improvement of the old crusher before. This machine is a new generation product to replace the old crusher and is most suitable to be used in the new stone line or the old equipment transformation production of the old production line for sand and gravel production. The design features of the old crusher are abandoned and the new hydraulic crushing method is adopted. The stone produced has good granularity and uniform size, and has the advantages of high output, high production efficiency, large crushing ratio and low energy consumption.
The jaw crusher works mainly with two jaw plates, i.e. the fixed jaw plate and the movable jaw plate, which are the most worn parts in the jaw crusher and need to be manufactured with high strength and wear resistant materials. The strength of the jaw plate of the jaw crusher is generally used as an insurance part in the standard structure, so its safety factor should be reduced in the calculation. It is recommended to increase its permissible stress by 25-30% during design. In order to weaken the section of the thrust plate, sometimes through holes are laid along its width.
When calculating the strength of the thrust plate of a jaw crusher, the width of the thrust plate is generally determined by the width of the motor jaw of that crusher, and then the thickness of the thrust plate is derived from this width. The material we use according to the strength requirements of the jaw plate is manganese steel, which has the following high strength and anti-wear properties. Manganese steel is a high-strength anti-wear steel, mainly used in the need to withstand impact, extrusion, material wear and other harsh working conditions, the form of damage to wear consumption, part of the fracture, deformation. Wear is divided into three kinds: frictional wear between metal components surface contact with each other and movement; abrasive wear of other metal or non-metallic materials striking the metal surface and erosion wear caused by flowing gas or liquid in contact with the metal. The wear resistance of wear-resistant steel depends on the material itself, while anti-wear steel shows different wear resistance under different working conditions, the material itself and the working conditions both to determine its wear resistance.
The material of jaw crusher tooth plate is made of high strength manganese steel, which greatly reduces the replacement frequency of wearable parts and directly reflects the maintenance cost of the equipment and the continuous reliability of the equipment. In the future, with the development of material science, we may have better strength and better wear resistance materials to produce longer life jaw crushers.
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