Continuous-casting martensitic spheroidal graphite cast iron lining plate and machining process thereof

A ductile iron and processing technology, applied in the direction of grain processing, etc., can solve the problems of increasing wear, reducing the mechanical properties of the lining plate, failing to work hardening, etc., improving the corrosion resistance of grain boundaries, overcoming erosion and peeling wear, The effect of improving physical and mechanical properties
CN102011044AInactive Publication Date: 2011-04-13安徽省宁国耐磨配件总厂
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
安徽省宁国耐磨配件总厂
Publication Date
2011-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a continuous-casting martensitic spheroidal graphite cast iron lining plate and a machining process thereof. The lining plate comprises the following raw materials in percentage by weight: 3.40 to 3.90 percent of C, 2.20 to 2.50 percent of Si, 0.80 to 1.20 percent of Mn, 0 to 0.50 percent of Cr, 0 to 0.03 percent of S, 0 to 0.10 percent of P, 0.03 to 0.06 percent of Re, 0.03 to 0.05 percent of Mg and the balance of Fe. The lining plate is machined by the machining process comprising electric furnace smelting, spherifying, crystallization, continuous casting, thermal treatment and the like. The continuous-casting martensitic spheroidal graphite cast iron lining plate machined by the machining process according to the formula has the characteristics of fine crystal grains, strong strength, corrosion resistance, wear resistance and low noise in use, and improves the working environment of a workshop.
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Description

technical field

[0001] The invention relates to a steel fitting and a processing method thereof, in particular to a nodular cast iron liner and a processing technology thereof. Background technique

[0002] At present, in the domestic ferrous metal mining industry, tubular ball mills, namely wet mills, are usually used for grinding. The lining plates used are made of EGMn13 and alloy steel. The casting process of the lining plates is full sand casting, but the obtained lining plates The average service life of the steel is 4 to 6 months and the grinding effect is very unsatisfactory. The specific performance is: the grain size is coarse, the cooling speed of the molten steel in the sand mold is very slow, and it is close to the heat preservation state, so that the grain size of the lining plate is large and reduces The mechanical properties of the liner are improved, thereby increasing the grinding consumption; the hardness is low, the initial hardness (HB) of EGMn13 is not ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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