railfastening

  As a   Railway Fastening System Exporter , let me share with you. Corrosion phenomena and mechanisms related to the stainless steel body of railway vehicles are discussed. Physical destruction Physical reasons damage the coating of high corrosion-resistant fasteners, resulting in corrosion of fasteners. Corrosion treatment and protection of railway vehicle fasteners: Square Bolt Fastener rust removal and antirust process methods can effectively prevent the rust phenomenon of fasteners. 1. Process flow ① Surface cleaning one ② Fastener rust removal one ③ Fastener rust prevention one ④ Anticorrosive wax drying 2. Surface cleaning Before construction, the area around the anti-rust treatment part should be protected to ensure that the anti-corrosion wax, cleaning agent, and anti-rust agent do not pollute rubber parts, plastic parts, electrical parts and other parts. Before anti-rust treatment, the surface dust, rust, oil and other impurities must be thoroughly removed. After cle...

  As a   Railway Fastening System Supplier , share with you. For the fastening requirements of fasteners, one of the most important points is that the teeth cannot be slipped, but the slipping of fasteners is a common problem. Today, China Standard Parts Network gives a detailed introduction to this problem and lists examples. Common phenomenon of bolt sliding teeth and solutions. Bridge Bolt Why do fasteners slip? Screw slippage may be caused by the material of the screw itself. When the screw material is not good, a lot of impurities and impurities will be produced. It may also be due to the fact that the customer's product itself is relatively hard (such as iron plate), and the reason must be found before the corresponding solution can be solved to prevent the self-tapping screw from slipping in the use of the product. Screw slippage is usually due to the following six reasons: 1. The length of the screw is not enough to bear the corresponding torque. 2. Quality reasons suc...

  As a   Railway Fastening System Exporter , let me share with you. The use of threaded fasteners is very extensive, and the problem that gives us a headache is the loosening of threaded fasteners during use. In response to this problem, inventors have been designing methods to prevent loosening of fasteners, and there are many mechanisms that cause fasteners to loosen. Recently, the standard parts network has learned that the rotating and non-rotating loosening mechanisms of fasteners are as follows: It is the prerequisite knowledge we share with you, and I hope it will be helpful to everyone. Railway Fastening System Rotating and non-rotating loosening In most applications, threaded fasteners are to be tightened in order to apply pre-tightening force in the joint. Loosening can be defined as the loss of pre-tightening force after tightening is completed. This can happen in either of two ways. Rotation loosening, usually called self loosening, refers to the relative rotation ...

  As a   Railway Fastening System Exporter , let me share with you. Generally, the screw and nut connection are self-locking, and will not loosen by themselves when subjected to static load and working temperature changes little. But under the action of shock, vibration or variable load, and when the working temperature changes little, this connection may loosen, affect the work, and even cause an accident. In order to ensure the safety and reliability of the connection, effective anti-loosening measures must be taken for the connection of screws and nuts. Rail Anchor Bolt 1. Choose the right size and size. A slightly larger or smaller screw may be barely used at the moment, but in the long run, it will be loose or locked. 2. Special engineering plastic is processed on the screw, so that the screw and nut can generate strong friction torque and reaction force due to the compression of the engineering plastic during the locking process, resulting in full-pitch contact, providin...

  The bolt that is loosened first in the bolt connection is more difficult to break. Do you know why? The following   Railway Fastening System Exporter   will share why the first loose bolt in the bolt connection is not easy to break. First of all, we must figure out the degree of looseness and what kind of load the bolt group bears in order to judge whether the first loose bolt will break first. Discuss in three situations. Bridge Bolt 1. If it only bears the static load, the bolt that is loosened first will not break first. If the bolt is loose, it means that the pre-tightening force has become smaller or the pre-tightening force is zero. The smaller the pre-tightening force, the external load Under the action of the bolt, the smaller the comprehensive working stress, the bolt with the smallest working stress will certainly not break first under static load conditions. Under normal circumstances, the bolt is applied with the same pre-tightening force. Assuming that the ...