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crane rail material

 


crane rail material

There are three kinds of crane running rails: crane rail, railway rail, and square steel. Rails are usually made of steel with high carbon and manganese content (C = 015% ~ 018%, Mn = 016% ~ 115%).

  1. The crane rail material is U71Mn, and the chemical composition of track material is (C 0.65-0.67, si0.15-0.35, mn1.1-1.5, P < = 0.04, s < = 0.04). The common models are qu70, QU80, qu100, and qu120. The number behind Qu indicates the width of the track head, the tensile strength is required to be no less than 880mpa, and the standard length is 9, 9.5, 10, 10.5, 11, 11.5, 12, and 12.5.
  2. Railway rail is divided into light steel rail and heavy steel rail.

Rails weighing more than 30kg/m are heavy steel rails. The main track material of heavy steel rail is 55Mn, 71Mn, with specifications of 50kg/m, 43kg/m, 38kg/m, and 33kg m. The crane rail is used for crane, with crane rail material of U71Mn, and rail specifications of QU70, QU80, QU100, and QU120.

Light steel rail is a rail with a weight of no more than 30k /m, and its length is generally 5 ~ 12m. Light rail steel usually adopts low-alloy structural steel containing manganese, silicon, phosphorus, and other alloy elements. Light crane rail material: Q235, 55Q, specification: 30, 24, 22, 18, 15, 12, 8;

  1. Square steel can be regarded as parallel rail, which has great wear on wheels. Generally, it is only used for cranes with small lifting capacity, slow running speed, and infrequent work.

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