Cast iron is an important engineering material with a number of advantages, mainly good castability and machinability and moderate mechanical properties. White cast iron contains 1.8 % -3.6 % C, 0.5 % -1.9 % Si and 1 % – 2 % manganese (Mn). White cast irons are so called because when broken, the fracture surface is white.
اقرأ أكثرThe abrasive wear resistance of a large group of cast steel and white iron grinding mill liners was studied using a combination of service and laboratory testing. The hardness of the liners was the metallurgical variable which correlated best with the weight losses experienced during both service exposure and pin abrasion tests. Chemical and …
اقرأ أكثرHigh Chrome Alloy Grinding Media Balls. High chromium white cast iron grinding balls are also called high chromium alloy casting balls.Most of the wear-resistant materials enterprise use medium frequency electric furnace through the melting of high-quality scrap steel and chromium alloy materials after reasonable matching.What is more,they also use grinding ball metal …
اقرأ أكثرIn this case, high chromium based cast iron were identified as a potential material for making the grinding media balls. High chromium cast irons (HCCIs) are excellent wear-resistant materials ...
اقرأ أكثرPrimary analyses of cast microstructure design of high chrome white cast iron grinding media (1) August 13, 2021 - 6:44 am Casting grinding balls making machine July 21, 2021 - 7:32 am Development and production of Bainite Ductile Iron grinding ball (3) …
اقرأ أكثرAbstract The grades of Ni-hard white cast iron alloys (ASTM-A 532) are known as abrasion resistant white iron. A large number of castings are produced with …
اقرأ أكثرDecolloy is one of the hardest and toughest white cast iron compositions commercially available. It is essentially a high carbon base chrome and nickel iron. Unless otherwise specified, a hard iron liner is furnished. This liner is made of the best grade white iron and is most serviceable for the smaller size mills where large balls are not used.
اقرأ أكثرThe microstructure of high chromium white cast iron grinding ball as-cast and after heat treatment was observed by metallographic microscope. The sample of 10mm* 10 mm* 8 mm in size at the center of the grinding ball was cut by weld and polished with 200 # to 1500 # metallographic sandpaper.
اقرأ أكثرThe grinding balls made of chromium white cast iron is used in many industries such as cement manufacturing, mining, metallurgy ... The grinding balls are filled in about 40% volume of the grinding equipment. When the ball mill works, …
اقرأ أكثرHigh-alloy white cast irons are an important group of materials whose production must be considered separately from that of ordinary types of cast irons. In these cast iron alloys, the alloy content is well above 4%, and consequently they cannot be produced by ladle additions to irons of otherwise standard compositions.
اقرأ أكثرLab-Research on Composition, Structure and Property of the High Alloy White Cast Iron Grinding Ball Used in Molydenum MineralCN
اقرأ أكثرAlibaba offers 2,414 ball casting grinding iron products. A wide variety of ball casting grinding iron options are available to you, such as applicable industries, warranty, and video outgoing-inspection.
اقرأ أكثرThe Influence Of Microstructure On The Corrosion And Wear …. corrosion in metal loss in ball … Interpretation of microstructure in high chromium white iron weld …Cast high chromium media in wet grinding.In Q.R … »More detailed
اقرأ أكثرThe experiments used Ni-hard and high-Cr cast iron grinding balls, both widely used as ball material. For comparison, drop tests were also carried out on chilled white iron balls. The chemical composition of the balls are shown in Table 1. Balls were of 50 mm diameter and weighed 500 g, cast by shell molding as shown in Fig. 1. The heat ...
اقرأ أكثرA process for producing a low alloy white cast iron is disclosed. The process comprises the steps of selecting one of a group of four alloying elements for a nickel, molybdenum/copper or modified low alloy iron; the four alloying groups consisting essentially, by weight percent of about: Group 1: 2.5 to 4.0% carbon; 0.3 to 0.8% silicon; 0.3 to 0.8% manganese; 0.75 to 2.0% nickel; …
اقرأ أكثرCast Grinding Iron Ball/Foundry Steel Ball, Jinan. 324 likes · 1 talking about this. Zhangqiu Taitou Special Steel Ball Factory manufactures high …
اقرأ أكثرmium white cast iron alloying with vanadium, particularly impact toughness, which is used for grinding balls ore, coal, gravel, and cement. In the industrial conditions, the balls of diameters 20–50 mm are cast in sand molds (Shell proce-dure), whereas balls of diameters 60–110 mm are cast in water-cooled permanent molds. Due to relatively ...
اقرأ أكثرZirconium Oxide Balls (95% ZrO2) are the strongest, best wearing ceramic media for metal-free, pharmaceutical and food processing grinding. These balls have a white, shiny appearance. They are also available in 3⁄8″ and ½" cylinders. This 95% grade is high-cost. 95% Beads; Specific Gravity: 6.0; Hardness: Hv 1150 kg/mm 2; Relative Cost: High
اقرأ أكثرGrinding balls and cylpebs. FEATURES Type: Cast spheres and cylinders of modified white cast iron Shape, dimensions: Spheres with diameters 30 - 120 mm and Cylinders - ø25h30; ø30h40 mm; Hardness: Brinel & Rockwell Density 7600 kg/m3 Structure: perlite-cement Tolerance of +5% mass
اقرأ أكثرof grinding media per ton of ore milled. (11) The role of retained austenite on the performance of cast iron based grinding media. (balls) is controversial. One school of thought is …
اقرأ أكثرPrimary analyses of cast microstructure design of high chrome white cast iron grinding media (1) August 13, 2021 - 6:44 am Casting grinding balls making machine July 21, 2021 - 7:32 am Development and production of Bainite Ductile Iron grinding ball (3) …
اقرأ أكثرNumerous grinding balls were obtained from eight major US manufacturers. All balls were nominally 75-mm diam. Steel grinding balls came from 6 manufacturers in 13 different lots, and alloyed white cast iron balls came from 3 manufacturers in 1 lot each. At least three balls selected at random from each lot were evaluated.
اقرأ أكثرCast grinding balls are solidified in high chromium cast iron to form (CR, Fe)7C3 type carbides, which are discontinuous in the structure, so they have …
اقرأ أكثرIn this study, high chrome white cast iron (HCWCI) and carbidic austempered nodular iron (CANI) grinding balls were subjected to different heat treatments to yield various amounts of retained austenite, after which they were subjected to abrasive wear testing.
اقرأ أكثرWhite cast iron displays white fractured surfaces due to the presence of an iron carbide precipitate called cementite. White iron is too brittle for use in many structural components, but with good hardness and abrasion resistance and relatively low cost, it finds use in such applications as: Wear surfaces (impeller and volute) of slurry pumps
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اقرأ أكثرAs grinding balls, mill liners, pulverizer rings and roll heads, slurry pump parts, ... name for a family of white cast irons alloyed with nickel and chromium to give high hardness and outstanding resistance to ... lab test with the ratio of the hardness of white iron to the abrasive hardness1,2
اقرأ أكثرThe microstructure of medium chromium white cast iron grinding ball can be regarded as a mixture of spongy reticulated M 3 C type cementite inlaid with austenite and alloy carbide transformation mainly M 7 C 3 type distributed in a three-dimensional open framework. The grinding balls' strength and toughness depend on the brittle M 3 C carbide phase's …
اقرأ أكثرThe invention discloses a method for manufacturing high-chrome cast iron grinding balls. The casting and melting process includes melting blank samples at the temperature ranging from 1450 DEG C to 1500 DEG C in a 100KW and 10Kg medium-frequency electric induction furnace, casting at high temperature and controlling discharge temperature at 1400 DEG C around.
اقرأ أكثر12%The detailed deformation mechanism and its microstructural modifications of white cast iron grinding balls used in comminution have been investigated using transmission electron microscopy (TEM) and XRD. De-shaping is the primary mode of ball consumption, and fracture of balls is a relatively uncommon failure mode. Deshaping is the …
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