Many users, when customizing steel castings, directly indicate that they require castings to be wear-resistant for the sake of work and environment. Manufacturers also produce high-quality wear-resistant castings according to their requirements. With the passage of time, wear-resistant castings will also fail. What is the reason for this? In fact, most of the reasons for the failure of wear-resistant steel castings are caused by long-term wear of the castings, so that the wear-resistant castings gradually lose until they fail.
Hardness is an important factor affecting the wear of castings. It is generally believed that the higher the hardness of castings, the better its wear resistance will be. In fact, the hardness of wear-resistant steel castings is the hardness after its working face is worn, and before there is no wear, that is the initial hardness. Steel casting manufacturers tell you that, in fact, the higher the hardness of wear-resistant steel casting is not the better, and some steel casting even leads to microscopic cracks due to the higher hardness.
The manufacturer has found that the failure cause of wear-resistant steel castings is corrosive abrasive wear, which is that the wear-resistant castings will be used under the condition of high temperature or wet abrasive wear after processing. Because the corrosion will occur under high temperature or electrochemical conditions, the wear-resistant parts will be subjected to abrasive wear and the corrosion of the castings. In this case, improving the corrosion resistance of wear-resistant castings is also conducive to improving the wear resistance. In the case of wet corrosion wear, it is necessary to improve the electrode potential of the casting, reduce the external corrosion, and improve the wear resistance of the cast steel
