In order to avoid the corrosion, you can choose the alloy material of railroad spike. How to avoid corroding and prolong the service life of railroad spike?įirstly, we choose railroad spikes carefully. Generally, the greater the relative humidity, the more likely to form a water film on the surface of the railroad spike, the longer the membrane remains, so the more likely the atmospheric corrosion.īecause the existence of temperature difference will promote the water vapor in the iron surface to form a water film, that provides a corrosion conditions.Īll in all, the railroad spike is easy to be corroded. In the third stage, due to the local concentration of tensile stress, the rapid growth of cracks led to the destruction. The second stage is the development of corrosion cracking. During this period, due to the localization of the corrosion process and the effect of tensile stress, the cracks disappear. The first stage is the incubation period. The process of the railroad spikes has three stages. The railroad spike is both subjected to static tensile stress and the role of the cyclic stress when the train passes. When the train through with high-speed, that will produce strong pressure, friction, horizontal force and elastic vibration to the rails. The rail is pressed against the sleeper by the railroad fasteners, and the railway fastener is pressed by the railroad spike, which is anchored to the sleeper and formed integrally with the sleeper. In the medium, the oxygen concentration increases and the crevice corrosion increases the pH decreases, the anodic dissolution rate increases and the crevice corrosion increases. When the iron and iron or iron and other non-metallic surface forms a narrow gap, the movement of the material has been blocked in the gap, which will form a concentration of batteries, resulting in local crevice corrosion. Due to the anode area is very small, so the corrosion rate is fast. These active anions are adsorbed at certain points on the root surface of the railroad spike so that the passivation film of the metal surface is destroyed that resulting in the corrosion. But the corrosion is an inescapable topic.ĭue to the railroad spikes are exposed to the atmosphere, the active anions (such as Cl-ions in the feces) are contained in the media. Mechanical railroad spike can be a good way to avoid these problems. For example, the surface will be partially raised, the weight of railroad spike will be more or less and the like. So the use of this production process will have a certain defect. Blacksmithing railroad spike is the use of the hand-made way to make the railway spike. But in term of the manufacturing technique, they have many differences. Both of them are easy to handle and use, just use the railroad spike hammer to fix. The common railroad spikes are divided into two categories, blacksmithing railroad spike and the mechanical railroad spike. These railroad spikes have different usages, but the function of them is same.īlacksmithing railroad spike VS mechanical railroad spike Among the various types of railroad spikes, the most common types are dog spikes and screw spikes. There are track spike, hexagon screw spike and the like. Railroad spikes can be classified into many types according to the materials and performance. With 20 years’ experience in manufacturing railway fasteners like rail joint, rail clip, rail fastening system and other rail fasteners, AGICO Rail makes an analysis of railroad spikes corrosion. Besides, the railroad spike can ensure a correct railway gauge position. The function of the railroad spike is to fasten the rails in its correct position so that attaching rails firmly to rail ties. Railroad spike is always used with rail clip, rail tie and others rail fasteners to play its role. Along with the development of the railway system, the type and technology of the railroad spike are upgrading. As a common rail fastener, railroad spike was first used in 1832. Railroad spike (railway spike) is a kind of railroad nails in the railway fastening system.
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