A simple production process of steel ball Ball forming → ring removal → rough grinding → soft grinding → heat treatment → ball forming → smooth ball (or file) Cutting, soft grinding), then grinding, fine grinding, fine grinding (or polishing), super grinding.
View More →Composition of low chromium cast steel balls Using 2.5%~2.7%C (carbon), 0.5%~1.0%Si(silicon), 1.0% ~ 1.5% Mn (manganese), 2.2%-2.5% Cr (Cr) low chromium cast iron grinding ball, adding 0.005% ~ 0.030% B (boron), 0.15%~ 0.20% rare earth and 0. 10%-0.15% alkali earth element microalloying and metamorphism treatment can improve the hardenability of grinding balls and improve the microstructure and properties of grinding balls.
View More →The composition of all kinds of incoming metal charge must be clear. Except for the iron and scrap, which are determined by the batching personnel in front of the furnace according to the condition of the charge, rebar is not allowed to be added into the ductile iron. The rest of the charge must have chemical composition test sheet before use, at the same time should ensure that the charge, alloy dry
View More →Steel ball Steel ball is a kind of grinding body widely used in ball mill. According to the milling process requirements, usually choose various specifications of Q20-120mm steel ball; For the coarse grinding bin of the ball mill, various steel balls of Q50-100mm are generally selected, and various steel balls of G20-50mm are selected for fine grinding bin. Steel forgings Steel forgings are short cylindrical in shape and their specifications are expressed in millimeters of length multiplied by diameter. Steel forging is generally used in the fine mill bin of the open circuit ball mill and also in the fine mill bin of the closed circuit ball mill.
View More →Different shapes and sizes of grinding bodies have different grinding effects in the grinding process. Ball mill used in cement plant According to its shape, there are mainly the following types of grinding body:
View More →The microstructure of low chromium cast iron grinding ball should be composed of as many hard structures as possible, carbides and martensite with significant morphological changes on the basis of the realization of broken mesh. Meanwhile, it is the design concept and goal of the new technology to reduce and control the internal stress, micro-cracks and discontinuous microstructure in the parts. The principles of new process design are consistent in the aspects of cooling rate control, composition design, casting metallurgical treatment and heat treatment.
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