The influence of steel ball material selection for manufacturing process

Steel ball manufacturing technology is a key factor to determine the service life of. If the manufacture of steel ball surface or internal flaws, such as shrinkage cavity and crack, transgranular, will not only reduce the performance of steel ball, even will cause the steel ball. In the production of steel ball must formulate reasonable forging, casting and heat treatment process. Of high chromium cast iron ball, for example, vertical casting and the rational use of cold iron should be adopted, and strictly controlling the pouring temperature, which can make the steel ball in casting solidification sequence and feeding conditions, the internal organization, density is obtained and weakened the phenomenon of coarse grains. Steel heat treatment process is determined the realization of its mechanical properties and the distribution of the carbide morphology. Due to contain a certain amount of chromium in steel components and other alloying elements, therefore how to make the formation of hard spots carbide alloy elements role into full play, and make heat treatment process to consider a factor. Wear-resistant steel ball commonly used material: low carbon alloy, high manganese steel and high carbon high chromium cast iron, high manganese steel alloy low carbon alloy steel ball has good toughness and the price is reasonable, the service life of 1 times more than the low chromium cast ball ascension; Good toughness and high manganese steel surface layer of specific performance in the ai can rapidly generate work hardening, the strain hardening index is higher than other materials 5 - Seven times, and can effectively improve the wear resistance, the premise is in larger shocks or under the action of contact stress, before implementation. High chromium cast iron is a kind of excellent anti-wear performance of wear resistant materials. High carbon high manganese steel are mainly containing chromium, molybdenum and other elements of alloy structural steel, high hardness and toughness are good.