What are the unique designs of Rail Transit Casting for durability in complex working environments?

Rail Transit Casting is subjected to complex and changing working environments in rail transit equipment, including high-speed operation, frequent vibration, harsh weather conditions, etc. Therefore, its durability and corrosion resistance are particularly important. In order to ensure the long-term stable operation of castings in these environments, we have adopted a series of unique design and technical measures.

In terms of material selection, we focus on selecting casting alloys with good durability and corrosion resistance. These alloys typically have high strength, hardness, and wear resistance, and can maintain stable performance in harsh working environments. At the same time, we also pay attention to the corrosion resistance of alloys and choose alloy materials that have good resistance to common corrosive media.

In terms of casting structure design, we have fully considered the actual working environment and usage requirements of rail transit equipment. By optimizing the structural shape and wall thickness distribution of castings, stress concentration and fatigue crack generation can be reduced, and the durability and reliability of castings can be improved. At the same time, we also pay attention to the sealing and drainage design of castings to prevent moisture and corrosive media from accumulating inside the castings, thereby reducing the occurrence of corrosion.

In addition, in terms of surface treatment technology, we use various methods to treat the surface of castings to improve their corrosion resistance. For example, removing oxide scale and dirt on the surface of castings through methods such as sandblasting and chemical cleaning; Form a dense anti-corrosion coating on the surface of castings through methods such as electroplating and thermal spraying; Alternatively, surface modification techniques such as carburizing and nitriding can be used to improve the hardness and wear resistance of the casting surface. These surface treatment techniques can effectively extend the service life of castings and reduce maintenance costs.