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High manganese steel lining board of deficiencies and weaknesses
2016-9-29 13:33:05

  High manganese steel lining board of deficiencies and weaknesses

  Is used, the most production enterprises to use high manganese steel lining board. Look from the performance-to-price ratio, high manganese steel lining board still has a certain advantage. Short of high hardness, high manganese steel surface, workers stadium soon wear out. At the same time, the yield limit of high manganese steel (delta 0.2

  ) with low (about 350 mpa), in use, especially using previous artifacts prone to plastic deformation. Another ball mill lining board and grinding medium (such as grinding balls) there is also a hardness matching problem between,

  Grinding medium hardness shall generally be higher than plate hardness HRC3 left and right sides is appropriate, but at present many factories use low chromium cast iron, the hardness of high chromium cast iron grinding ball is greatly higher than that of high manganese steel plate hardness. High manganese steel under low impact load of the above deficiencies often result in artifacts enough toughness and wear resistance, wear failure quickly, and deformation is serious, the stadium is shorter.

  The disadvantage of high manganese steel lining plate is: creep and easy to extend, phase transformation can cause the surface of the arch deformation, can't get ideal in the working condition of ball mill work hardening.

  Hard liner does not meet the requirements of higher use

  Traditional high manganese steel is not suitable for ball mill liner, it is already known, the disadvantage of high manganese steel lining plate is: creep and easy to extend, phase transformation can cause the surface of the arch deformation, can't get ideal in the working condition of ball mill work hardening. The former is the root cause of powder leakage and broken bolt, while the latter shows that cannot imagine the anti-wear performance: there must be even get some work hardening, nor as a symbol of the degree of anti-wear, because the work hardening is a kind of "destruction" of hardening, it and there is a difference between the initial hardness of lining board.

  Means wear-resisting, this is not in dispute. S and eighty s, both at home and abroad to launch a large number of high hardness lining material, grinding ball, such as high chromium cast iron, nickel iron, high carbon alloy steel, martensitic ductile iron, and in some carbon alloy steel, etc., but because of the material toughness values are low, some ak value only about 5 j. Bound to the traditional form of lining board, are not widely applied. Plate fracture has become a high hardness, high wear-resistant material application of the biggest obstacles.

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