Wear-resistant manganese steel ball mill steel balls are the most widely used wear-resistant materials. Among them, high-manganese steel ball mill steel balls were invented by the British in 2001. The as-cast structure of the ball mill steel balls is austenite + martensite + carbide. After water toughening treatment, it becomes a single austenite structure. The main characteristic of high manganese steel ball mill steel balls is low yield strength. The workpiece of high manganese steel ball mill steel balls is easily deformed during use, with an impact value of up to /㎡, showing extremely high toughness, and can produce work hardening under strong impact conditions. As a result, it has good wear resistance. Over the years, the main components of high manganese steel have not changed much. The chemical composition of the currently mass-produced high manganese steel ball mill balls is,. The wear resistance of high manganese steel ball mill steel balls is related to the carbon content. Generally speaking, the higher the carbon content, the better the wear resistance. However, when it is above the carbon content, carbides will easily precipitate and the toughness will be reduced. In addition, depending on the conditions of use, on the basis of ordinary high manganese steel, some other alloying elements such as chromium, vanadium, tungsten, copper and boron are purposefully added to further solid solution the austenite to achieve solid solution strengthening. . Elements such as vanadium, titanium, chromium and molybdenum are added to disperse and precipitate fine carbides on the austenite matrix to achieve second phase strengthening.
This distribution pattern of carbides has little effect on the toughness of high manganese steel, but it can prevent dislocation movement, thus greatly improving the work hardening ability of high manganese steel. Adding elements such as rare earths, magnesium and calcium can purify grain boundaries and improve the shape and distribution of inclusions to achieve grain boundary strengthening. Adding rare earth, titanium and other elements can significantly refine the structure to achieve fine grain strengthening of ball mill steel balls in ball mill accessories.
Ball mill manufacturer Gongyi Xingnong Machinery not only puts great efforts into ball mill equipment, the company always takes the production of wear-resistant castings as its development direction, adheres to the policy of both technology introduction and independent development, and focuses on ball mill accessories, dryer accessories, rotary Various working conditions such as kiln accessories and the characteristics of the materials themselves have formed three series of wear-resistant castings, high manganese steel series, multi-element alloy steel series, high and low chromium cast iron series, which are suitable for various grinding working conditions. Hundreds of them are widely used in mining, metallurgy, building materials, electric power, refractory materials, chemicals and other industries. They are used in more than ten provinces, municipalities and autonomous regions across the country, and exported to many countries, winning high praise from users.
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