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The Basic Introduction Of Jaw Crusher Jaw Plate

Zhejiang Shengda Machinery Co.,Ltd | Updated: Jul 04, 2017

In the crusher crusher cavity of the moving jaw and jaw are equipped with high manganese steel with a longitudinal tooth profile, convex and concave relative to the activities of the fixed tooth plate, crusher operation is the relative movement of the tooth plate, the ore Bending and crushing to achieve the purpose of crushing.

1, Jaw Crusher Jaw Plate conditions, wear, failure

Tooth condition: Typical continuous strong impact load operation.

Tooth plate wear characteristics: the typical material, the hard protrusions interact with the surface of the material to cause the material to migrate.

Tooth plate failure: wear, deformation, fracture is the main failure mode. In the abrasive wear conditions, the casting material gradually disappeared, thinning, yield strength, impact toughness continued to decline, and the material fatigue limit continued to eventually lead to tooth plate failure.

2, Jaw Crusher Jaw Plate chemical composition

Chemical composition determines the organization and performance of steel, high manganese steel is a high carbon content of steel, high manganese steel in the amount of carbon on the wear resistance has an important role. Under normal circumstances, with the increase in carbon hardness increases in non-strong impact conditions, improve the carbon content, is conducive to improving the wear resistance of steel. However, in the case of strong impact, in order to heat treatment to get single-phase austenite structure, so that steel has good plasticity, toughness and work hardening, but also appropriate to reduce the carbon content.

Manganese is the main alloy and austenitizing element of high manganese steel. When the carbon content is constant, with the increase of manganese content, the steel structure changes from pearlite to martensite and further into austenite, steel strength Toughness will also improve.

As with the carbon content, the choice of manganese content in the steel also depends on the working conditions, the complexity of the casting structure and so on. Strong impact of high stress conditions, the wall thickness of the larger, complex shape of the casting, in order to obtain high toughness to prevent the use of the phenomenon of fracture, manganese content to be higher, non-strong impact load operations castings, manganese can be lower The

The tooth plate is operated under strong impact load conditions. According to the theory of high manganese steel composition design, lower carbon content and higher manganese content should be selected. This heat treatment, you can get a stable single-phase austenite structure, so that the material has good plasticity and toughness, easy to be hardened in the work hardening. Otherwise the hardening value of the work harder, harder layer is shallow, likely to cause early failure.

3, Jaw Crusher Jaw Plate of the microstructure

The tooth plate is operated under strong impact load and squeeze load conditions. It is required that the casting must have a tough and abrasion-resistant shell and a high toughness resistant fracture-resistant core tissue formed after hardening. This requires that the metal The organization of a single austenite, and contains a variety of forms of carbide high manganese steel, tooth in the working conditions, the microstructure is not appropriate.