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Cast Iron Balls Grinding Steel Balls. Fast delivery high chrome cast steel ball for cement plant 20mm180mm grinding ball cast iron balls with iso9001 made in china cast 150mm grinding media ball for ball mill and mine ore dressing high medium low chrome cast iron balls for cement plant ball mill high chrome cr 120 casting iron balls for ball mill and cement plant.
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Our cast iron grinding balls can be divided into three categories including the high chromium type, medium chromium type and the low chromium type. 1. The quality index of the high chromium type The chromium content of the high chromium type product is greater than or equal to 10.0%. And the carbon content is between 1.80% and 3.20%.
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As grinding balls, mill liners, pulverizer rings and roll heads, slurry pump parts, ... nickel and chromium to give high hardness and outstanding resistance to abrasion. There are two ... lab test with the ratio of the hardness of white iron to the abrasive hardness1,2
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Because of its outstanding wear resistance, a nickel-chromium white cast iron known as Ni-Hard has been successfully used for over forty years to make grinding media. The microstructure of Ni-Hard consists essentially or carbide and martensite, and its hardness is 600 Brinell in the chill cast and stress relieved condition.
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Ni-hard White Iron Mixer Blades with Investment Cast Process EB35001. ... BTMCr20 Grinding Balls for Coal Mills High Hardness EB15008. Rubber Liners (10) ... Incoloy 800/ 800H/ 800HT Bright Bar Nickel Chromium Alloy Bar. Hot Selling Products (18)
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Communication Standard 29CFR 1910.1200 (c). Dust or fumes generated by cleaning, machining, grinding, or welding of the casting may produce airborne contaminants, such as chromium, copper, iron, manganese, nickel, silicon, tin and silica. For hexavalent chromium references see 29 CFR 1910.1026. US-EPA (Toxic Substances Control Act, TSCA)
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One of the most common grinding ball materials is chromium white cast irons. For example, the Belgian com-pany Magotteaux [3] produces grinding bodies made of high-chromium cast iron grades MAXICROM®, HAR-DALLOY ®, DUOMAX®, DUROMAX, etc. In France, Canada and the USA, nickel-containing low-chromium
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The invention discloses a high-chromium alloy steel anti-abrasion liner, which is applied to ball mills in the industries of power plants, metallurgy, mines, building materials, and the like. The high-chromium alloy steel anti-abrasion liner comprises the following alloy components in percentage by weight: 2.20-2.50 percent of C, 15-18 percent of Cr, 0.3-0.5 percent of Ni, 1.0 …
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High Chromium White cast iron grinding ball is also known as high chromium alloy casting ball, high chromium steel ball, referred to as high chromium ball. At present, most of the domestic wear-resistant material enterprises take the medium frequency electric induction furnace as the main body, through the reasonable matching of high-quality ...
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Therefore, in order to make the hardness of 50mm high chromium white cast iron grinding ball larger than 60HRC, the optimum austenitizing temperature and holding time are fixed range. Because if the temperature is lower or holding time is not enough, the white cast iron is not fully austenitized and its hardness is lower after quenching.
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II.Material application. Application of high chromium cast iron grinding ball in ball mill; Ball mill is cement, power, mining and other industries grinding process of the main equipment, ball mill is one of the main vulnerable parts of the ball mill.The grinding ball should have high wear resistance and toughness.Its wear resistance to the production of a very …
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Compositional ranges suggested for the manufacture of Ni-Hard grinding balls and slugs are about 3% carbon, 0.5% silicon, 0.5% manganese, 1.5-4% nickel and 1.0-2% chromium, the rest being iron. A low alloy white cast iron having a hardness and a microstructure similar to those of Ni-hard was disclosed in Canadian Pat. No. 1,125,056 owned by the ...
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Grinding balls are prepared from white cast iron alloyed with chromium and molybdenum. After melting in a high-frequency induction furnace and pouring into sand molds the hardness of grinding balls 20 – 120 mm in diameter may reach 700 HB.
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Total Materia sind die umfangreichsten Metalldatenbanken der Welt: Stahl, Eisen, Stahllegierungen, Aluminium, Kupfer, Titan, Magnesium, Zinn, Zink, Blei, Nickel. Total Materia beinhaltet mehr als 10 Millione Einträge zu Eigenschaften für Metalle aus mehr als 69 Ländern/Normen: Metallnormen, chemische Zusammensetzung, Anwendung der Metalle, …
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ASTM A532-I is a class of martensitic nickel white iron. In low-alloy white iron, a matrix is made of pearlite. Pearlite is relatively soft and has low wear resistance. To increase the wear resistance of white cast iron, the Pearlitic matrix is shifted to martensite by introducing Nickel and Chromium in it. Nickel is added in between 5-8wt%.
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Ni-Hard is a white cast iron, alloyed with nickel and chromium suitable for low impact, sliding abrasion for both wet and dry applications. Ni-Hard is an extremely wear-resistant material, cast in forms and shapes which are ideal for use in abrasive and wear environments and applications.
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as chromium, manganese, and cobalt. ... ly the early nickel white irons, limited them to applications of low impact. There is considerable information in the ... commercial grinding balls made of high- carbon, low-alloy steel, and heat treated
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and to form chromium carbides which are harder than iron ones. Most of them also contain nickel, molybdenum, copper or combinations of these alloying elements in order to prevent the formation of pearlite in the microstructure [1,2]. The chromium-molybdenum white irons (class II of ASTM A532)
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In the laboratory, specimens in the form of balls, 75 mm in diameter, were subjected to repetitive impacts, up to 300 000, to produce cracking and spalling. Three high chromium white cast iron alloys, each with 10 different heat treatments, were investigated. The interiors of the impacted specimens were examined by scanning electron microscopy.
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Ni-Hard Type I to IV: Nickel-Chromium White Irons: These have 3-5% Ni, 1-4% Cr (Ni-hard IV has 7-11% Cr). Ni-hard IV with 3.2% C, 9% Cr, 6% Ni has 410 BHN hardness, 690 MPa, compressive yield strength, 160 J unnotched impact energy in the austenite state; 750 BHN hardness, 2450 MPa compressive yield strength, 170 J unnotched impact energy in ...
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the nickel-chromium martensitic white irons, containing up to about 7% ni and 11% cr, usually put into service after only a low-temperature heat treatment at 230 to 290c to temper the martensite and to increase toughness. if retained austenite is present and the iron therefore has less than optimum hardness, a subzero treatment down to liquid …
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How to Choose A Liner and Ball for A Ball Mill. For a long time, a less accurate statement has spread widely, that is, the hardness of the grinding ball is higher than the liner by HRC 3 ~ 5. Asked why, but nowhere to verify. There is no doubt that the liner and the grinding ball are in a cooperative relationship. They and the material together form a three-body …
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Beneath this subsurface region in spherical specimens, the reversal of the CRS to a tensile residual stress beneath the point of maximum CRS is required by static equilibrium [16]. The tensile residual stress is responsible for the occasional catastrophic explosion of high chromium white cast iron grinding balls [11]. 3.3.
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a manganese-copper molybdenum alloy white cast iron has a substantially uniformly distributed martensitic structure and a high and uniform hardness in excess of 500 brinell and a high resistance to abrasion and impact. a preferred range of alloying components includes between 2.5 and 5% manganese, between about 2% and about 4% carbon, up to about 2% silicon and at …
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A cast iron alloy composition comprising 2.5-3.5% carbon, 0.5-1.0% manganese, 0.25-1.5% silicon, 13-19% chromium, and 0.8-3.0% nickel, the balance essentially being iron, this composition being machinable in the annealed condition and abrasion-resistant in the hardened condition. The alloy assumes its annealed condition by heating to above the austenitizing …
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Nickel-chromium white ... greater toughness. A special grade, class J type C, has been developed for producing grinding balls and slugs. Here, the nickel-chromium alloy composition has been adapted for chill casting and specialized sand casting processes. The Class I type D (Ni-Hard 4) alloy is a modified nickel-chromium iron that contains ...
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Balls used in grinding white cement biosynergetics. manufacturing process of high chromium grinding media hi chromium white cement mills grinding mill china balls used in grinding white cement newest crusher grinding mill mobile crusher plant for quarry we manufacture grinding media for steel copper and cement mills made of white ductile and high chromium …
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