350*750 river pebble fine tooth crusher high manganese steel tooth plate accessories foundry manufacturer

High manganese steel is the traditional material for the jaw plate of jaw crusher. It has good toughness and good deformation hardening ability. However, due to the unreasonable structure of the current jaw crusher, the opening angle between the movable and fixed jaw plates is too large, which easily causes the sliding of the abrasives and insufficient deformation hardening of the high manganese steel. The surface hardness of the jaw plates is low, and the short-range cutting amount of the abrasives is reduced. Larger, the jaw plate wears faster. Therefore, to improve the wear resistance of high manganese steel jaw plates, one is to improve the structure of the jaw crusher, minimize the sliding of abrasives on the surface of the jaw plates, and give full play to the potential of high manganese steel deformation hardening. The other is to improve the quality of high manganese steel. Make modifications. , Medium manganese steel has lower initial hardness and lower yield strength than high manganese steel. Under non-strong impact conditions, its work hardening is insufficient and it is easy to flow and be cut. In order to improve the service life of the jaw plate, medium manganese steel was developed. Its as-cast structure is composed of austenite, martensite and a small amount of pearlite. After water toughening treatment, its structure is single austenite or austenite plus a small amount of undissolved carbides. For example, when crushing silica, the service life of the jaw plate is more than % longer than that of high manganese steel, while the cost is equivalent to that of high manganese steel jaw plate. Therefore, when used in small and medium-sized jaw crushers, medium manganese steel is a jaw plate material worth promoting.
Composite of high chromium cast iron and high manganese steel
Although high chromium cast iron is an excellent wear-resistant material, its toughness is poor. When it is impacted or extruded by materials, it will directly break or deform very much. Peeling will occur after a few times. Therefore, using high-chromium cast iron as the jaw plate may not necessarily achieve better results. In recent years, high chromium cast iron has been inlaid or bonded to high manganese steel jaw plates to form composite jaw plates, which give full play to the high wear resistance of high chromium cast iron and the high toughness of high manganese steel, extending the service life of the jaw plates. This is an effective way to improve the service life of the jaw plate. However, the manufacturing process is relatively complex and the process requirements are quite strict. Therefore, the manufacturing is difficult, which limits the application of this composite jaw plate.
Zhengzhou Huayang Machinery Equipment Co., Ltd.
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