Welcome to Suzhou Sudelan Railway Parts Co., Ltd. 


  ©Suzhou Sudelan Railway Parts Co., Ltd.     All rights reserved.     备案号:苏ICP备11065469号-1

Add:No.9, Donghuan Rd., Fuqiao Town, Taicang City, Jiangsu Province, P.R.China    Tel:0086-512-53703217    Phone:0086-18012719858    Powered    SUZHOU



sleeper screws manufacturers take you to understand the classification of rail damage

Page view

Sleeper screws are the main components of railway tracks. The main material is manganese alloy. The function of sleeper screws is to guide the wheels of the rolling stock to move forward, bear the huge pressure of the wheels, and transmit them to the sleepers. The main material of sleeper screws is carbon steel, which has high strength and hardness, high elastic limit and fatigue limit.

Low price sleeper screws from China manufacturer
Rail damage classification:
The manufacturer of sleeper screws tells you that rail damage is a serious problem in railway rail transportation, which directly affects the safety and stability of train operation, and is closely related to transportation costs, selection of rail materials, and related design and manufacturing. The manufacturer of sleeper screws tells you that the rails need support and guide the locomotive in the prescribed direction. During long-term use, however, rails can suffer damage, such as common fractures, cracks, and other conditions that affect performance. Only by clarifying the rail damage and its causes can the quality of rail flaw detection be better improved.
Rail nuclear damage
The main reason is that in the process of smelting or rolling, the material used is relatively poor, or there are defects in the use process, so that the locomotive is under the action of repeated loads, the stress is concentrated, and the fatigue source continues to increase and expand. . The manufacturer of sleeper screws tells you that the nuclear injury of the rail mainly occurs on the inner side of the head of the rail, and as the diameter of the nuclear injury increases, the carrying capacity of the rail will decrease. Therefore, under the action of high-speed repetitive load, the rail is extremely prone to breakage.
Rail joint damage
This is the weakest link in the line. The wheels of the rolling stock continuously act on the joints of the rails, so that the maximum inertial force is increased by about 55% compared with other parts. The manufacturer of sleeper screws tells you that in the normal rail flaw detection process, screw hole cracks or saddle wear often occur.
Longitudinal and vertical horizontal cracks in rails
The longitudinal and vertical horizontal cracks of the rail are mainly due to the poor manufacturing process of the rail, and the serious segregation, shrinkage cavities, inclusions and other problems in the ingot are not paid attention to. The manufacturer of sleeper screws tells you that after the ingot is rolled into a rail, those defects will remain in the head of the rail, the waist of the rail and the bottom of the rail, on the contrary, it is parallel to the longitudinal direction of the rail, showing a horizontal or vertical state.
Rail bottom crack
The vertical longitudinal crack from the rail waist develops downward, and it becomes the rail bottom crack. Rust pits or scratches on the rail bottom will form transverse cracks on the rail bottom. The manufacturer of sleeper screws tells you that in the process of manufacturing the rail, the rail bottom has defects such as rolling and non-close contact with the backing plate and sleeper, which makes the bottom of the rail subject to great stress, resulting in transverse cracks or ruptures at the bottom of the rail.