Hardened steel ball in the crushing industry is the largest wear-resistant materials consumables, in the process of using the need to understand the technology, performance, use characteristics and cost-effective, so as to be able to effectively adapt to the needs of the market, hardened steel ball Increase production efficiency is of great practical significance. Not to mention the performance of the ball can also directly affect the operation of the mill rate and grinding efficiency, resulting in a more extensive impact on corporate grinding system.
Hardened steel ball in the production process in the form of general forging, rolling and casting three categories, when used in the dressing industry for some of its special conditions and the use of integrated environment, the background, in the crushing industry, the domestic steel ball casting Accounting for a large proportion of foreign forging and rolling ball occupy a large proportion. However, according to the development of domestic forging ball industry, there is a gradual replacement of cast ball.
In the rising stage of mill motion of hardened steel ball, the relative slip of the material and other abrasive bodies during use and the abrasion of materials such as limestone, sandstone, clinker, slag, shale and coal during use Sharp and hard particles cut the surface of the abrasive body, the grooves cut deeper, relatively blunt and soft particles cut shallow grooves, so the grinding body surface of the groove depth.
Hardened steel ball and material relative sliding and impact, in addition to direct cutting and chiseling, there furrow deformation and chiseling accompanied by the occurrence of metal extrusion was pushed to the groove and the edge of the outer edge of the pit in the repeated role And metal deformation, due to strain fatigue cracks, crack growth, connection, the formation of plow chips, from the surface off.