railfastening

  As a   Railway Fastening System Exporter , let me share with you. We all know that in order to prevent the problem of corrosion, the fasteners on the track and railway will be connected and installed with stainless steel, but these fasteners are in the assembly stage as the fasteners damage the coating during the fastening process. This leads to corrosion of the fasteners. Therefore, it is also very important to remove rust and prevent rust from fasteners on railways. The following China Standard Parts Network, based on the understanding of the fastener corrosion problem, shares in detail how to protect the railway vehicle fastener corrosion problem. Railway Fastening System Listed below are pictures of rusty rail vehicle fasteners: 1. Analysis of the causes of fastener corrosion High-resistant fasteners are a kind of metal, and its corrosion principle is almost the same as that of other metal materials. In most cases, the corrosion of metal materials is the result of electr...

  Fastener nuts are common parts of connectors. For the use of fastener nuts, common surface defects are: cracks, shear bursts, bursts, cracks, wrinkles, dents, cuts, and damage. The following is a detailed explanation of some problems of fastener nut surface defects by   Track Bolt China Exporter . Bridge Bolt 1. Cracks A crack is a clear (crystalline) fracture along the metal grain boundary or across the grain, and may contain inclusions of foreign elements. Cracks are often caused by excessive stress during metal forging or other forming processes or heat treatment. Cracks may also exist in the raw materials. When the workpiece is heated again, the cracks are usually discolored due to the sharpness of the scale. (1) Quenching crack Causes of quenching cracks: During the heat treatment process, quenching cracks may occur due to excessive thermal stress and strain. Quenching cracks are usually irregular, with irregular directions appearing on the surface of the nut. Note: Que...

  As a   Railway Fastening System Manufacturer , share with you. In daily life, many small friends will find that when they loosen the screws, the more they tighten, the more they try to find that some screws are turned counterclockwise. Why is this happening? The reason is that the screws have positive and negative threads The points of silk can also be called positive buckle and reverse buckle. Hex Bolt Left and right thread comparison Positive buckle is common, tighten clockwise and loosen counterclockwise, while the application of reverse buckle is less, and the tightening method is opposite to positive buckle. Reverse screws are generally made according to needs and requirements, usually to prevent reverse. According to the direction of rotation, it is less likely to cause torque attenuation and more reliable than the right-hand screw. Rectangular countersunk screw The scientific name of the reverse buckle is "left-handed screw". As the name implies, it is the reverse of...

  In our daily life, if you carefully observe the connecting parts on mechanical equipment-screws, you will find that many mechanical equipment uses hexagon socket screws. Why is this? Hexagon screws have advantages for the connection of mechanical equipment Faced with these questions,   China Screw Spike Supplier   will explain the problem to you based on specific understanding. High Strength Bolt Hexagon socket screws have rounded heads and recessed hexagons in the middle. The advantages of this structure are obvious. 1. The load is greater. It has six force-bearing surfaces, which are more able to be tightened than flat screws and Phillips screws with only two surfaces. Note: The material of the hexagon socket bolts is generally made of stainless steel, carbon steel, alloy steel, and it is basically the same as other types of screw materials.The higher the performance level, the greater the strength. When selecting screws, you must strictly choose according to the requ...

  As a   Railway Fastening System Supplier , share with you. In order to improve the performance of fasteners, it will be hot galvanized. Hot dip galvanizing belongs to a process technology for treating the surface of the metal, mainly to improve the corrosion resistance of the metal surface, so what advantages will this have? Railway Fastening System 1.Good reliability: the metallurgical combination between the galvanized layer and the steel is a part of the steel surface, so the durability of the coating is more reliable; 2. Comprehensive protection: every part of the plated parts can be plated with zinc, even if it is in depressions, sharp corners and hidden places; it can be fully protected; 3.Low processing cost: the cost of hot dip galvanized anti-rust is lower than the cost of other paint coatings; 4. Save time and effort: the galvanizing process is faster than other coating construction methods, and can avoid the time required to paint on the construction site after in...