火车轨道不是用不锈钢做的，因为它会生锈
When watching the "Thomas and Friends" children's video, the editor will think that every time we pass the train track, we will find that the track is rusty. Why? Isn't the train track made of stainless steel? Yes It’s not stainless steel. What kind of steel material is that? According to the understanding of steel materials, China Standard Parts Network learned that it is not easy to use stainless steel for train tracks.
The track of a train must have good abrasion resistance in order to withstand the high-intensity friction of the wheels throughout the year, and it must have super heat resistance, so that when the friction generates heat, the track will not deform due to high temperature, and the train track Steel has high requirements for compressive and tensile properties, and these stainless steels cannot meet them. The tensile and compressive resistance of stainless steel are not much lower.The steel used in train tracks is much lower.When the train passes quickly, if it is a track laid by stainless steel, it is easy to generate a lot of heat energy under strong friction. It is easy to deform. And the train runs on the deformed track, it is easy to cause a car accident, so stainless steel is excluded for everyone's safety.
So what kind of steel is used in the train track? Of course, it is high-manganese steel that is very good in compression resistance and tensile resistance, as well as heat resistance and wear resistance. And even the harsh environment on the Qinghai-Tibet Plateau can work well.
Although the high manganese steel has the above characteristics, it is easy to rust, so the railroad tracks you see are all rusty. But don't worry, even if it is rusty, the steel itself is worthy of our trust, and the staff will regularly check the safety of the rails. So you don't have to worry about the rusty rails will affect our safety. Our safety is guaranteed by the hard work of science and technology and the staff. Thanks to those who silently pay behind it.
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