Advantages and Disadvantages of Several Common jaw crusher

Advantages and Disadvantages of Several Common jaw crusher

The jaw crusher is commonly known as smashed, also known as the tiger's mouth. It is an early crushing equipment with durability Service online

Advantages and Disadvantages of Several Common jaw crusher

Advantages and Disadvantages of Several Common jaw crusher jaw materials

The jaw crusher is commonly known as smashed, also known as the tiger's mouth. It is an early crushing equipment with durability, excellent performance, simple maintenance, flexible adjustment, etc. It is still in the crushing industry. The fascia is the main wear component of the jaw crusher and consumes a lot of energy. Therefore, we must pay attention to the selection of the raft. The following SBM Heavy Industries will give you a detailed introduction to the advantages and disadvantages of several common jaw crusher jaw materials:

 

  • (1) High manganese steel
  • High manganese steel is the traditional material of the jaw crusher jaw plate. It has good toughness and good deformation hardening ability. However, due to the fact that the jaw crusher structure is not very reasonable, the opening angle between the moving and fixed jaws is too large, which is liable to cause the sliding of the abrasive and the high-manganese steel to be hardened and hardened. The surface hardness of the seesaw is low, the short cut of the abrasive is large, and the seesaw wears faster. Therefore, to improve the wear resistance of the high manganese steel slab, the first is to improve the structure of the jaw crusher, to minimize the sliding of the abrasive on the surface of the raft, and to allow the potential of high manganese steel to be hardened; Manganese steel is modified. However, the modification treatment of high manganese steel greatly impairs its toughness. Under some working conditions, the modified high manganese steel slab is prone to early fracture and failure.

  • (2) Medium manganese steel
  • Since the high hardness of the high manganese steel is low and the yield strength is low, the non-strong impact condition is small, the work hardening is insufficient, and it is easy to flow and be cut. In order to improve the service life of the seesaw, medium manganese steel was developed. Medium manganese steel has achieved good results in practical applications. For example, when crushed silica, the service life of high manganese steel slabs is increased by more than 20%, and the cost is comparable to that of high manganese steel slabs. Therefore, for small and medium-sized jaw crushers, medium-manganese steel is a material that is worth promoting.

  • (3) High chromium cast iron and high manganese steel composite
  • Although high-chromium cast iron is an excellent wear-resistant material for the jaw crusher, it has poor toughness (usually Ak is 5-8 J/cm2). When it is impacted or squeezed by material, it will be directly broken or deformed. Peeling occurs on a few occasions. Therefore, the use of high-chromium cast iron as a seesaw does not necessarily lead to better use. In recent years, high-chromium cast iron is cast or bonded to high-manganese steel slabs to form composite rafts, giving full play to the high wear resistance of high-chromium cast iron and the high toughness of high-manganese steel, making the life of rafts It has been significantly improved, which is an effective way to improve the service life of the seesaw. However, the manufacturing process is complicated and the process requirements are quite strict. Therefore, the manufacturing is difficult, which limits the application of the composite raft.

  • (4) Low alloy cast steel
  • Medium carbon low alloy cast steel is a widely used wear resistant material, mainly due to its high hardness (HRC ≥ 45) and appropriate toughness (Ak ≥ 15J / m2), which can resist the cutting of materials. The action and the fatigue peeling caused by repeated extrusion of the material, thus showing good wear resistance. The same medium carbon low alloy cast steel can also be adjusted by the composition and heat treatment process to make the hardness and toughness vary within a wide range to meet the requirements of different working conditions.

    The above briefly introduces four commonly used materials, but there are other types of jaw crusher materials, such as medium-strength ductile iron and martensitic ductile iron, which are not commonly used. When selecting the jaw crusher jaws, be sure to pay attention to the material properties and choose the most suitable material.

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