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A low-alloy steel and manufacturing method technology, applied in the field of wear-resistant materials, can solve the problems of wear resistance, low corrosion resistance, poor impact toughness of grinding balls, etc., to reduce production costs and energy consumption, high impact resistance and Good wear resistance and the effect of saving limited resources
Inactive Publication Date: 2013-04-03
MAANSHAN HENGDA WEAR RESISTANT MATERIALS
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[0003] The purpose of this invention is to solve the problems of poor impact toughness, wear resistance and corrosion resistance of grinding balls, and provide a multi-element low alloy steel wear-resistant ball and its manufacturing method
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[0014] The weight percentage of each chemical composition in multi-component low alloy steel wear-resistant ball is: C 0.8-1.2%, Si 1.5-2.0%, Mn 1.8-2.4%, Cr 1.6-2.2%, Mo 0.2-0.5%, V 0.08-0.12 %, Ti 0.04-0.06%, B 0.01-0.03%, Nb 0.02-0.04%, La 0.03-0.05%, Y 0.03-0.04%, Sc0.02-0.03%, P≤0.05%, S≤0.05%, remainder The amount is Fe.
[0015] A method for manufacturing a multi-element low alloy steel wear-resistant ball, comprising the following steps:
[0016] (1) Use medium frequency induction furnace for smelting, add pig iron, scrap steel, ferrochromium, ferrosilicon, ferromanganese, ferromolybdenum and other furnace materials according to the weight ratio of the above chemical components, and heat up. When the temperature of molten steel reaches 1580 ℃, take samples for chemical Analyze and control each chemical composition within the specified range; when the temperature reaches 1640°C, deoxidize by inserting aluminum;
[0017] (2) Molten steel can be tapped after ...
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Abstract
The invention discloses a multielement low alloy steel wear resisting ball which comprises the chemical components by weight percentage as follows: 0.8-1.2% of C, 1.5-2.0% of Si, 1.8-2.4% of Mn, 1.6-2.2% of Cr, 0.2-0.5 of Mo, 0.08-0.12% of V, 0.04-0.06% of Ti, 0.01-0.03% of B, 0.02-0.04% of Nb, 0.03-0.05% of La, 0.03-0.04% of Y, 0.02-0.03% of Sc, P smaller than or equal to 0.05%, S smaller than or equal to 0.05%, and the balance of Fe. According to the invention, the multielement low alloy steel wear resisting ball which uses Si, Mn and Cr as main alloy elements and where an appropriate amount of Mo, V, Ti, B, Nb and rare earth are added is prepared by optimizing material formula, regulating the casting and melting process and combining a reasonable thermal processing method. The ball and the method have the characteristics of high hardness, high tenacity, high impact resistance, good wear resistance and the like.
Description
technical field [0001] The invention relates to a multi-component low-alloy steel wear-resistant ball and a manufacturing method thereof, belonging to the technical field of wear-resistant materials. Background technique [0002] Ball mill is the main equipment for the production and processing of powder materials in metallurgical mines, building materials, cement, power chemical industry and other industries. During the working process of ball mill, its grinding ball is used as the end product, which belongs to the main wearable parts. Its usage is large and has a great impact on the cost of use. has always attracted people's attention. With the development of industry, various large-scale ball mills are increasing year by year, and the consumption of grinding balls is also increasing significantly. This not only consumes a large amount of iron and steel materials, but also a large amount of iron powder enters the boiler, corrodes the boiler parts and reduces its life. At...
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