Recently, meteorological departments in many northern regions have issued yellow warnings for hail, with some areas even experiencing hail the size of an egg. This sudden extreme weather not only troubles people's lives, but also poses a severe challenge to the safe operation of railway transportation. As the cornerstone of railway tracks, can anti-corrosion sleepers hold their ground under the fierce impact of hail? Today, Qingdao Tiehan will start with the production process of anti-corrosion sleepers and analyze their ability to resist hail.

From material selection to anti-corrosion, the cultivation of the "hard core" of sleepers

Anti corrosion sleepers are not ordinary wood, and their birth requires a series of rigorous craftsmanship "tempering". Firstly, the selection process is very particular. Anti corrosion sleepers for railways are usually made of pine wood, which has good elasticity and toughness and is a natural "shock absorber". But good wood alone is not enough, the subsequent processing technology is the key.

During the production process, sleepers need to go through multiple processes such as peeling, drying, sawing, and scoring. The peeling process requires thorough removal of the outer skin of the wood, and the damage thickness should not exceed 3 millimeters. This ensures the flatness of the sleeper surface and avoids the residual outer skin from becoming a breeding ground for decay. And the drying process is even more crucial - reducing the moisture content of wood to below 35% through natural drying. Low moisture content means that the wood has higher hardness and more stable structure, making it more resistant to hail impact.

The "Golden Bell Cover" made of anti-corrosion oil: a defense layer that cannot be broken by hail

If physical treatment is called "strengthening muscles and bones", then anti-corrosion treatment is like putting a layer of "golden bell cover" on the sleepers. Anti corrosion sleepers need to undergo vacuum pressure oil immersion treatment to penetrate the interior of the wood with anti-corrosion oil. These anti-corrosion oils can effectively prevent the erosion of decay bacteria and pests.

The oil immersion depth of anti-corrosion sleepers can usually reach over 13mm, which means that the sleepers are fully protected from the inside out. Even if hail leaves dents on the surface, the internal mechanical strength of the sleepers will not be affected. And hail is usually dominated by instantaneous impact force, making it difficult to penetrate this layer of protection, so the "anti hail ability" of anti-corrosion sleepers can be seen.

Practical Test: The 'Sea God's Needle' in Hail

The anti hail ability of anti-corrosion sleepers is not just a theoretical concept. On the northern railway lines, they have already experienced countless extreme weather conditions. Even in the event of hail the size of an egg, anti-corrosion sleepers can still firmly "root" on the track, safeguarding the safe passage of trains. Behind this is the confidence of scientific technology and strict quality inspection - every anti-corrosion sleeper that leaves the factory must go through multiple checkpoints such as sampling inspection, moisture content testing, and anti-corrosion oil immersion depth testing to ensure that it can withstand various harsh environments.

Conclusion: The Game between Technology and Nature

When hail strikes, we don't need to worry about anti-corrosion sleepers. From material selection to anti-corrosion, from detailed design to mechanical strengthening, every process is building a fortress for sleepers to resist natural disasters. The advantages of anti-corrosion sleepers in hail weather are not only a reflection of technical strength, but also a solid guarantee for the safe operation of railways.