Although high chromium cast iron has good hardenability, high chromium cast iron contains a large amount of chromium, making its thermal conductivity worse. When the cooling rate is high, the steep thermal gradient is easily produced in the casting. Then at different parts of the casting, the phase transition occurs at different times. Also, the […]
Abstract: High Chromium cast iron is a kind of excellent wear-resistant material; it not only has good wear resistance but also has a specific camber and toughness; electric Power and other industries have been widely used and achieved significant economic benefits.
The tensile specimen (cast steel) is cut from the button spindle with the size as shown in Figure 5 and the thickness is 1mm.
HU Zhi-jun, ZHAO Xiao-peng, YANG Yi-tao (School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China) Abstract： The influences of normalizing and tempering temperature on mechanical properties and microstructure of low alloy wear-resistant cast steel were investigated by using a vacuum arc furnace in lab situations. The results show that normalizing can refine the […]
The hardness of the tested sample after heat treatment at medium temperature (740 ~ 820 °c) is shown in Table 3. The corresponding metallograph is shown in Fig. 2. It can be seen that the hardness of hypoeutectic high chromium cast iron after heat treatment at medium temperature has significant change compared with the as-cast […]
Big and medium size of the liners It is essential to preheat and even temperature operation of the lining plate, directly related to the toughness of the lining plate. The quenching process includes expanding preheating and homogenizing. In this process, the influence of thermal stress and microstructure stress should be considered. This two types of […]
Abstract: The lining plate is an essential part of the composition of the machinery and equipment on the mine. In the production of the ore, it needs to be in direct contact with the ore material. After being subjected to a lot of pressure and wear, it can also maintain its original quality and performance […]
1) when non-ferro alloy is melted, charge, solvent, tool and ladle should be preheated and dried fully, rust and oil should be removed, and the amount of charge should be properly limited.