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Medium-chromium wear-resistant lining board

A wear-resistant lining, weight percentage technology, applied in the field of wear-resistant linings, can solve the problems of high cost of composite ceramic grids, reduce the lifting height of the grinding body, etc. Effect

Inactive Publication Date: 2014-10-08
NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of this kind of liner is flat, and the lack of friction between the grinding body and the liner surface will cause the grinding body to slide along the surface of the liner, which reduces the lifting height of the grinding body, and the cost of composite ceramic mesh on the entire surface is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A medium-chromium wear-resistant lining plate, the components and their weight percentages are: C: 0.7%, Mn: 0.68%, Si: 0.75%, Cr: 5.9%, Mo: 0.65%, B: 0.045%, Cu: 0.1 %, P: 0.004%, Re: 0.06%; the balance is Fe.

[0030] The preparation method of medium chrome wear-resistant liner comprises the following steps:

[0031] (1) Preparation of sand molds;

[0032] (2) Raw material smelting, after the raw material is smelted, cover the liquid surface with pearl sand; add ferromanganese when the temperature is 1562 degrees Celsius; add ferrosilicon when the temperature is 1573 degrees Celsius, and then add medium chromium steel to balance the content of C and Cr; When the temperature is high, adding ferromanganese and ferrosilicon is convenient for slag removal, deoxidation, desulfurization and dephosphorization;

[0033] (3) add Re to carry out metamorphic treatment;

[0034] (4) Add ladle covering agent;

[0035] (5) casting, the temperature is 1485 degrees Celsius;

[0...

Embodiment 2

[0044] A medium chromium wear-resistant lining plate, the components and their weight percentages are: C: 0.65%, Mn: 0.8%, Si: 0.6%, Cr: 6.2%, Mo: 0.6%, B: 0.05%, Cu: 0.1 %, P: 0.01%, Re: 0.1%; the balance is Fe.

[0045] The preparation method of medium chrome wear-resistant liner comprises the following steps:

[0046] (1) Preparation of sand molds;

[0047] (2) Raw material smelting, after the raw material is smelted, cover the liquid surface with pearl sand; add ferromanganese when the temperature is 1560 degrees Celsius; add ferrosilicon when the temperature is 1575 degrees Celsius, and then add medium chromium steel to balance the content of C and Cr; When the temperature is high, adding ferromanganese and ferrosilicon is convenient for slag removal, deoxidation, desulfurization and dephosphorization;

[0048] (3) add Re to carry out metamorphic treatment;

[0049] (4) Add ladle covering agent;

[0050] (5) Casting is carried out at a temperature of 1480 degrees Cels...

Embodiment 3

[0054] A medium-chrome wear-resistant lining plate, the components and their weight percentages are: C: 0.8%, Mn: 0.6%, Si: 0.8%, Cr: 5.6%, Mo: 0.7%, B: 0.03%, Cu: 0.2 %, P: 0.01%, Re: 0.02%; the balance is Fe.

[0055] The preparation method of medium chrome wear-resistant liner comprises the following steps:

[0056] (1) Preparation of sand molds;

[0057] (2) Raw material smelting, after the raw material is smelted, cover the liquid surface with pearl sand; add ferromanganese when the temperature is 1565 degrees Celsius; add ferrosilicon when the temperature is 1570 degrees Celsius, and then add medium chromium steel to balance the content of C and Cr; When the temperature is high, adding ferromanganese and ferrosilicon is convenient for slag removal, deoxidation, desulfurization and dephosphorization;

[0058] (3) add Re to carry out metamorphic treatment;

[0059] (4) Add ladle covering agent;

[0060] (5) Casting is carried out at a temperature of 1500 degrees Celsiu...

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Abstract

The invention discloses a medium-chromium wear-resistant lining board, belonging to the technical field of wear-resistant lining boards. The medium-chromium wear-resistant lining board is composed of the following components in percentage by weight: 0.65-0.8% of C, 0.6-0.8% of Mn, 0.6-0.8% of Si, 5.6-6.2% of Cr, 0.6-0.7% of Mo, 0.03-0.05% of B, at most 0.2% of Cu, at most 0.01% of P, 0.02-0.1% of Re and the balance of Fe. By reasonably improving the formula of the wear-resistant lining board and using the reasonable processing technique, the wear-resistant lining board has the advantages of favorable wear resistance, favorable corrosion resistance and favorable toughness, and can be used as a ball mill lining board or composite self-fixing lining board; the surface HRC is greater than or equal to 60 Mpa, the shock absorption energy is greater than or equal to 20J, and the service life is 10000-12000 hours; and the wear-resistant lining board has fewer alloy types, lower weight ratio and lower cost.

Description

technical field [0001] The invention relates to the technical field of wear-resistant lining boards, in particular to a medium-chrome 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 ...

Claims

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Application Information

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IPC IPC(8): C22C38/32C22C33/04C21D6/00B22C9/02
Inventor 李根有李骏
Owner NINGGUO ZHENGXING WEAR RESISTANT MATERIALS
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