The reason why the vacuum furnace tray can withstand high temperature 1300 is mainly due to the special material it uses - ZG40CR28Ni48W5. This alloy steel has excellent high-temperature properties, and its high-temperature resistance mainly stems from the following aspects:
First of all, a large amount of chromium (Cr) and nickel (Ni) elements are added to ZG40Cr28Ni48W5 alloy steel. Chromium is a strong carbide forming element, which can effectively improve the oxidation resistance and corrosion resistance of steel; Nickel, on the other hand, enhances the strength and toughness of the steel, allowing it to maintain good mechanical properties at high temperatures. The combination of these two elements makes ZG40Cr28Ni48W5 have excellent resistance to high-temperature oxidation.
Secondly, a small amount of tungsten (W) element is also added to the alloy steel. Tungsten can refine the matrix structure of steel, improve the strength and hardness of steel, and further enhance its high temperature resistance. In addition, tungsten can improve the creep resistance of steel and prevent deformation under high temperature and long-term operating conditions.
Finally, through reasonable smelting process and heat treatment process, the microstructure of ZG40Cr28Ni48W5 alloy steel is more uniform and dense, so as to improve its stability and reliability at high temperature.
To sum up, ZG40CR28Ni48W5 alloy steel with its unique composition and exquisite craftsmanship makes the vacuum furnace tray work normally in a high temperature environment of 1300 meters, showing excellent high temperature performance.