Method for solving non-uniform corrosion of steel ladle working layer
A technology of working layers and ladles, which is applied in the direction of manufacturing tools, metal processing equipment, casting molten material containers, etc., can solve the problems of scrapping ladles, shortening the overall service life of ladles, etc., to reduce maintenance costs, save maintenance time, and prolong service life Effect
Inactive Publication Date: 2011-04-06
ZHENGZHOU ZHENDONG TECH
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Problems solved by technology
During the process of converter tapping, argon blowing and stirring, etc., the molten steel or steel slag erodes the working layer of the ladle inner wall facing the steel surface area, the slag line area, the slag surface area, and the ladle bottom impact area faster than other parts, often The entire ladle is scrapped due to severe erosion of the working layer in a certain part, which greatly shortens the overall service life of the ladle
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[0012] As shown in the figure, the method for solving the unequal velocity erosion of the working layer of the ladle described in the present invention, wherein the working layer of the ladle includes: the steel-facing surface area 1 of the cladding wall, the lower slag line area 2, the slag surface area 3, and the ladle bottom impact area 4 ;The solution is to follow the steps below:
[0013] The first step is to first detect the erosion rate of the parts with the fastest erosion rate and the erosion rate of the parts with the slowest erosion rate in each area of the above-mentioned ladle;
[0014] The second step, according to the design thickness of each area of the ladle working layer, the reserved safety design thickness, and the design service life of the parts with slow erosion speed, thicken the thickness of the parts with the fastest erosion speed in each area, that is, in each area of the ladle working layer On the basis of the design thickness, thicken the par...
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The invention discloses a method for solving the non-uniform corrosion of the steel ladle working layer. The method comprises the following steps: 1) the corrosion rate of the part corroded in the highest speed and the corrosion rate of the part corroded in the lowest speed are detected in each region of a steel ladle; 2) according to the design thickness of each region of the steel ladle working layer, the preset safe design thickness and the design service life of the part with slow corrosion rate, the part with the highest corrosion rate of each region is thickened, namely the part with the highest corrosion rate is thickened on the basis of the design thickness of each region of the steel ladle working layer, the extra thickness is calculated by the following formula: extra thickness = [(design thickness of the region - preset safe design thickness of the region) * corrosion rate of the part with the highest corrosion rate in the region / the corrosion rate of the part with the lowest corrosion rate in the region] + preset safe design thickness of the region; and 3) according to the data obtained in the step 2), the refractory brick used in the part with the highest corrosion rate is widened or thickened.
Description
technical field [0001] The invention relates to a steel ladle for a steelmaking furnace, in particular to a method for solving the non-uniform velocity erosion of the working layer of the ladle. Background technique [0002] The ladle of the steelmaking furnace comprises a ladle shell, a permanent layer of pouring material for the ladle compounded on the inner wall of the shell, and a working layer compounded on the inner wall of the permanent layer of castable material for the ladle. Due to the working layers in different areas of the inner wall of the ladle, refractory bricks of different materials need to be used according to the design requirements. During the process of converter tapping, argon blowing and stirring, etc., the molten steel or steel slag erodes the working layer of the ladle inner wall facing the steel surface area, the slag line area, the slag surface area, and the ladle bottom impact area faster than other parts, often The entire ladle is scrapped due ...
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IPC IPC(8): B22D41/02
Inventor 侯振东刘大圈靳秀礼王俊超朱长栓肖代洲
Owner ZHENGZHOU ZHENDONG TECH