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A composite wear-resistant liner

A wear-resistant liner and composite technology, applied in the field of wear-resistant liner, can solve the problems of easy fracture, low strength and toughness, and difficulty in exerting work hardening ability, and achieve the effect of good combination and cost saving.

Inactive Publication Date: 2016-05-18
NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The work hardening ability of high manganese steel is difficult to exert under the condition of low stress abrasive wear, which affects the effect of
High chromium cast iron liner has excellent wear resistance, but its strength and toughness are low, and it is easy to break when used in transportation, installation and high stress conditions
Therefore, it is often difficult for a single material to meet the requirements of a wide stress range.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A composite wear-resistant liner, which uses low-carbon high-manganese steel as a matrix, and casts high-manganese steel and high-chromium cast iron on both sides of the matrix. The components and weight percentages of the high-manganese steel are: C: 0.98% , Mn: 11.8%, Si: 0.5%, Cr: 3.65%, Mo: 0.85%, S: 0.03%, P: 0.01%, RE: 0.06%; the balance is Fe; the components of the high chromium cast iron and Its weight percentage is: C: 3.05%, Mn: 0.65%, Si: 0.54%, Cr: 18.2%, Mo: 1.88%, S: 0.02%, P: 0.005%, RE: 0.07%; the balance is Fe.

[0027] The preparation method of composite wear-resistant liner comprises the following steps:

[0028] (1) Prepare sand molds, use 50-80 mesh washed sand to make sand molds, wherein: 60-80 mesh washed sand accounts for 26%, 50-60 mesh washed sand accounts for 74%;

[0029] (2) Raw material smelting, smelting high manganese steel and high chromium cast iron according to the ratio of raw materials, the melting temperature of high manganese stee...

Embodiment 2

[0040] A composite wear-resistant liner, which uses low-carbon high-manganese steel as the matrix, and casts high-manganese steel and high-chromium cast iron on both sides of the matrix. The components and weight percentages of the high-manganese steel are: C: 0.95%, Mn : 12.8%, Si: 0.4%, Cr: 3.8%, Mo: 0.8%, S: 0.04%, P: 0.01%, RE: 0.04%; the balance is Fe; the components and weight percentages of high chromium cast iron are : C: 3.1%, Mn: 0.5%, Si: 0.6%, Cr: 17.5%, Mo: 2.0%, S: 0.04%, P: 0.01%, RE: 0.04%; the balance is Fe.

[0041] The preparation method of composite wear-resistant liner comprises the following steps:

[0042] (1) Prepare sand molds, use 50-80 mesh washed sand to make sand molds, wherein: 60-80 mesh washed sand accounts for 28%, 50-60 mesh washed sand accounts for 72%;

[0043] (2) Raw material smelting, smelting high manganese steel and high chromium cast iron according to the proportion of raw materials, the melting temperature of high manganese steel is 16...

Embodiment 3

[0049] A composite wear-resistant liner, which uses low-carbon high-manganese steel as a matrix, and casts high-manganese steel and high-chromium cast iron on both sides of the matrix. The components and weight percentages of the high-manganese steel are: C: 1.1%, Mn : 11.5%, Si: 0.6%, Cr: 3.6%, Mo: 1.0%, S: 0.02%, P: 0.008%, RE: 0.1%; the balance is Fe; the components and weight percentages of high chromium cast iron are : C: 2.95%, Mn: 0.8%, Si: 0.5%, Cr: 18.8%, Mo: 1.8%, S: 0.03%, P: ≤0.007%, RE: 0.1%; the balance is Fe.

[0050] The preparation method of composite wear-resistant liner comprises the following steps:

[0051] (1) Prepare sand molds, use 50-80 mesh washed sand to make sand molds, wherein: 60-80 mesh washed sand accounts for 25%, 50-60 mesh washed sand accounts for 75%;

[0052] (2) Raw material smelting, smelting high manganese steel and high chromium cast iron according to the proportion of raw materials, the melting temperature of high manganese steel is 1...

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PUM

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Abstract

The invention discloses a compound type wear-resisting lining plate which takes low-carbon high-manganese steel as a matrix two sides of which are respectively cast with high-manganese steel and high-chromium cast iron. The high-manganese steel consists of the following components in percent by weight: 0.95-1.1% of C, 11.5-12.8% of Mn, 0.4-0.6% of Si, 3.6-3.8% of Cr, 0.8-1.0% of Mo, not greater than 0.04% of S, not greater than 0.01% of P, 0.04-0.1% of Re, and the balance of Fe; the high-chromium cast iron consists of the following components in percent by weight: 2.95-3.1% of C, 0.5-0.8% of Mn, 0.5-0.6% of Si, 17.5-18.8% of Cr, 1.8-2.0% of Mo, not greater than 0.04% of S, not greater than 0.01% of P, 0.04-0.1% of Re, and the balance of Fe. According to the compound type wear-resisting lining plate disclosed by the invention, the high-chromium cast iron and the high-manganese steel are combined well without dropping and loosening; meanwhile, the compound type wear-resisting lining plate has toughness of the high-manganese steel and wear resistance of the high-chromium cast iron, has the characteristics of being high in toughness, high in wear resistance and corrosion-resistant, so that service life of the lining plate is 2.2-2.5 times that of a single high-manganese steel lining plate and 2.0-2.4 times that of a single high-chromium cast iron lining plate, and therefore, cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of wear-resistant lining boards, in particular to a composite wear-resistant lining board. Background technique [0002] Wear-resistant materials are a large class of new materials with special electrical, magnetic, optical, acoustic, thermal, mechanical, chemical and biological functions. They are important basic materials for high-tech fields such as information technology, biotechnology, energy technology, and national defense construction. At the same time, it also plays a very important role in transforming some traditional industries. [0003] Wear-resistant linings refer to various wear-resistant linings processed from wear-resistant steel plates through cutting, coiling deformation, drilling and welding, such as conveyor linings, coal feeder bottom plates / cyclone separator inverted cones And liners, wear-resistant blades, etc., the wear-resistant life can be increased by more than 15 times than ordi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/38C22C37/10B22D19/16
Inventor 李根有李骏
Owner NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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