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Effect of Heat Treatment on the Hardness and Wear of ...

Oct 02, 2017· The effect quenching and tempering by different regimes on Rockwell hardness and wear processes of grinding balls 50 and 70 mm in diameter made of two melts of chromium-molybdenum cast iron is studied. The heating temperature for quenching is 850, 950, and 1050°C; the tempering temperature is 250, 400, and 600°C. Iron is analyzed in an electron microscope. Diffraction patterns …


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produce a wide range of specialty wear resistant high chromium castings and alloy castings for scrap shredder, cement grinding mill, mining industry. Close control of steel chemistry is followed by heat treatment with facilities for know-how solution treatment, annealing, normalizing and hardening and tempering. Production Standard: ASTM / DIN / BS /JIS / ISO.


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However, in the production of high chromium cast iron cast grinding ball, the low hardness and impact toughness of the grinding ball lead to the problems of the high rate of breakage and wear dia50mm grinding balls for coal mills in Shanxi and the United States are mainly used for grinding hard anthracite coal The ball must have high wear ...


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High Chrome Steel Grinding Media balls are made by the way medium-frequency electric furnace smelting and metal mould or sand casting, and it also called high-chromium cast ball.


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Oct 15, 2016· Charleston. 14528. 1.1054. 76.0. . 73259100. HIGH CHROMIUM GRINDING MEDIA BALLS (DIA30MM) (OTHER CAST ARTICLES …


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Grinding/ Milling - International Cement Review

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SHVRI:KLWH&DVW,URQVDQG

preferred [11]. The high chromium cast irons containing 30 - 40 wt. %Cr with lower carbon levels at 1.5 - 2.4 wt. %C have ferritic matrix structures. Ferrite (δ-Fe) is normally undesirable in abrasion-resistant high chromium cast irons since it is softer than austenite and …


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Progressive Minerals is the only supplier offering the full range of grinding balls in particular and grinding media in general: cast and forged, low and high chromium, balls/boulpebs/rods and ceramic grinding beads and balls. Why choose Progressive Minerals grinding balls.