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%).

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.
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;

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.

Comments

Principle of rail clamp design

Principle of rail clamp design rail clamp design The rail clamp design has several functional features: 1. Adjustability: The adjustable length is 15mm, and its adjustability functions include: (1) The rail presser is easy to install, saves time, and has high precision (2) The track can be adjusted if the structure of the support beam is slightly changed. 2. Anti-loosening: Under the action of the lateral force of the track, through the force analysis of the welding RTYB, a part of these lateral forces are transmitted to the bottom seat through the upper cover plate as the pressure of the bottom edge to seat on the upper cover plate. The other part is the lateral friction between the base and the upper cover. Since the wedge-shaped action between the base and the upper cover plate is converted into the tightening force of the bolts, it has an anti-loosening effect. 3. Self-locking: The three pieces are self-locking together through the interaction of the upper cover, the base, and the

steel chamfer / triangular steel bar supplier from China- Glroysteelwork

steel chamfer / triangular steel bar supplier from China- Glroysteelwork Steel chamfer is manufactured from cold drawn steel and can be welded or bolted into place to provide relief from sharp edges to reduce chipping and spalling.Steel chamfer is available in three sizes: 10mm*10mm15mm*15mm20mm*20mm25mm*25mm Glorysteelwork is an professional manufacture of cold drawn, we have many years export experiences and long term cooperation clients. Materials: SS400/A36/Q235B Length:4000mm or as required Contact Us E-mail： info@glorysteelwork.com Whatsapp：86 15036167067 Mobile: 86 15036167067 Skype: karenwu7067

What is rail creep

What is rail creep rail creep Rail creep is also known as line crawl. The creeping phenomenon of the rail along the longitudinal direction of the line. With the increase in railway transportation tasks, the impact of the wheels on the rails when the train is running accelerates the creep of the rails. Rail creep can cause many diseases of the line. In order to prevent the occurrence of track creep diseases, it is necessary to find out the real cause of creeping in order to effectively eliminate the problem. There are two different manifestations: the rails move along the soft sleeper surface due to insufficient fastening pressure of the fasteners; the longitudinal movement of the row is caused by insufficient ballast bed resistance. The reason for this is the longitudinal force of the rail caused by the wheel rolling and longitudinal slip, train braking, the change of rail temperature, and the creep caused by the deflection and deformation of the rail under the action of the wheel load

Glorysteelwork

Search This Blog