Composite lining plate of ball mill and preparation method thereof

A compound ball and mill technology, applied in the field of mechanical equipment, can solve the problems of inability to carry out large-scale industrial production, fail to meet the needs of actual use, complex preparation process, etc., achieve high wear resistance, prevent collapse, and simple manufacturing process Effect

Active Publication Date: 2010-11-17
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the above-mentioned liners and their preparation processes cannot meet the needs of actual use at all, and some of them have complicated preparation processes and high production costs, making it impossible to carry out industrialized large-scale production

Method used

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  • Composite lining plate of ball mill and preparation method thereof
  • Composite lining plate of ball mill and preparation method thereof
  • Composite lining plate of ball mill and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] A composite ball mill liner with tungsten carbide particles as the hard phase and Mn13Mo2 high manganese steel as the matrix was prepared.

[0023] 1. Select tungsten carbide particles 1 with a particle size range of 40 to 60 mesh, add 3% furan resin and 1% borax by weight of the tungsten carbide particles, and stir evenly;

[0024] 2. Make the mold 2 according to the requirements of the casting process;

[0025] 3. Lay the stirred tungsten carbide particles 1 to a thickness of 2 mm in the cavity of the mold 2 and compact them properly;

[0026] 4. Select Mn13Mo2 high manganese steel as the base metal 3. After smelting and melting in an intermediate frequency furnace, it reaches 1600°C and is released from the furnace. Pour Mn13Mo2 high manganese steel liquid into the cavity of the mold 2 until it is full;

[0027] 5. After the molten metal is cooled and solidified, take out the casting and clean it, and then make the liner 4 of the composite ball mill with tungsten ca...

Embodiment 2

[0029] A composite ball mill liner with silicon carbide particles as the hard phase and Mn13 high manganese steel as the matrix was prepared.

[0030] 1. Select silicon carbide particles 1 with a particle size range of 20 to 40 mesh, add 2% furan resin and 0.5% borax by weight of the silicon carbide particles, and stir evenly;

[0031] 2. Make the mold 2 according to the requirements of the casting process;

[0032] 3. Lay the stirred silicon carbide particles 1 to a thickness of 10mm in the cavity of the mold 2, and compact them properly;

[0033] 4. Select Mn13 high manganese steel as the base metal 3. After smelting and melting in an intermediate frequency furnace, it is released at 1600°C. Pour the Mn13 high manganese steel liquid into the cavity of the mold 2 until it is full;

[0034] 5. After the molten metal is cooled and solidified, take out the casting and clean it, and then make the liner 4 of the composite ball mill with tungsten carbide particles on the working s...

Embodiment 3

[0036] A composite ball mill liner with silicon nitride (or titanium nitride) particles as the hard phase and Mn13Mo2 high manganese steel as the matrix was prepared.

[0037] 1. Select silicon nitride (or titanium nitride) particles 1 with a particle size range of 60 to 80 meshes, add 5% furan resin and 1.5% borax by weight of the silicon nitride particles, and stir evenly;

[0038] 2. Make the mold 2 according to the requirements of the casting process;

[0039] 3. Lay the stirred silicon nitride (or titanium nitride) particles 1 to 6 mm in the cavity of the mold 2, and compact them properly;

[0040] 4. Select Mn13Mo2 high manganese steel as the base metal 3. After smelting and melting in an intermediate frequency furnace, it reaches 1600°C and is released from the furnace. Pour Mn13Mo2 high manganese steel liquid into the cavity of the mold 2 until it is full;

[0041] 5. After the molten metal is cooled and solidified, take out the casting and clean it, and then make the...

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Abstract

The invention relates to a composite lining plate of a ball mill and a preparation method thereof. A layer of hard ceramic grains are compounded on a wear surface of the composite lining plate of the ball mill to form an anti-wear hard phase, so that the wear resistance is improved. The preparation method comprises the following steps of: adding an adhesive and a permeation-promoting agent into the ceramic grains; stirring the mixture uniformly; paving the mixture in a cast of the lining plate of the ball mill according to the design requirements; casting a matrix metal; and cooling, demoulding and cleaning to obtain the composite lining plate of the ball mill. The composite lining plate of the ball mill and the preparation method thereof have the advantages that: one layer of the hard ceramic grains are compounded on the wear surface of the composite lining plate of the ball mill to form the anti-wear hard phase and the matrix metal is filled in the gap of the ceramic grains, so the composite surface has the wear resistance of the ceramic grains and the plasticity and the fatigue resistance of the matrix metal; the hard phase is difficult to drop off; the controllability of process parameters is high; the defects of slag inclusion and the like do not exist in the organization; the processing operation is convenient; industrialized mass production is facilitated; and the service life of the lining plate is prolonged by 5 to 8 times compared with that of the common metal lining plate.

Description

technical field [0001] The invention relates to mechanical equipment in the fields of crushing, grinding, conveying, flotation and crushing, in particular to a ball mill liner under impact wear conditions and a preparation method thereof. Background technique [0002] Coal, metallurgy, mining, electric power, building materials, refractory materials, energy and other industrial industries widely use ball mills for material crushing, and ball mill liners are the most important wearable parts. At present, the materials of ball mill liners used in various industries mainly include several single metal materials such as high manganese steel, multi-element low alloy steel, and chromium-based white cast iron. There are no hard carbides in high manganese steel, so the hardness is low. Only under high load and high impact stress, the solid phase transformation from austenite to martensite and work hardening can give full play to its wear resistance. In general working conditions, t...

Claims

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Application Information

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IPC IPC(8): B02C17/22
Inventor 蒋业华黄汝清岑启宏周荣周荣锋黎振华
Owner KUNMING UNIV OF SCI & TECH
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