Multi-element alloy lining plate suitable for semi-automatic mill and machining process thereof

A semi-autogenous mill and multi-element alloy technology, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve the problems of reduced equipment operation rate, short service life of lining board, easy fracture and wear resistance, etc., and achieve high wear resistance , high yield strength, simple operation

Inactive Publication Date: 2016-11-09
CHENGDE RONGMAO CAST STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the high-carbon chromium-molybdenum alloy liner is easy to break and has poor wear resistance during use, and the service life of the liner is short, which makes the mineral processing plant need to replace the liner frequently, which greatly reduces the operation rate of the equipment and increases the cost of mineral processing. Plant operating costs

Method used

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  • Multi-element alloy lining plate suitable for semi-automatic mill and machining process thereof
  • Multi-element alloy lining plate suitable for semi-automatic mill and machining process thereof
  • Multi-element alloy lining plate suitable for semi-automatic mill and machining process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A processing technology for a multi-element alloy liner suitable for semi-autogenous mills, including the following processes:

[0033] (a) casting molding:

[0034] The smelting molten iron temperature is 1480°C, and the pouring temperature is 1420°C. Resin self-setting sand molding process. After molding, remove the sprue to make the as-cast liner.

[0035] The molten iron includes the following components in mass percentage: 1.2% carbon, 0.45% silicon, 12.4% manganese, 1.0% chromium, 0.2% molybdenum, 0.3% vanadium, 0.1% titanium, phosphorus <0.05%, sulfur <0.03%, and the balance for iron.

[0036] The multi-element alloy liner finally prepared includes the following components in mass percentage: 1.2% carbon, 0.45% silicon, 12.4% manganese, 1.0% chromium, 0.2% molybdenum, 0.3% vanadium, 0.1% titanium, phosphorus<0.05%, sulfur< 0.03%, the balance is iron;

[0037] (b) Heat treatment of the as-cast liner: put the as-cast liner into the heat treatment furnace, rais...

Embodiment 2

[0039] A processing technology for ausferic ductile iron grinding balls suitable for semi-autogenous mills, including the following processes:

[0040] (a) casting molding:

[0041] The smelting molten iron temperature is 1470°C, and the pouring temperature is 1400°C. Resin self-setting sand molding process. After molding, remove the sprue to make the as-cast liner.

[0042]The molten iron includes the following components in mass percentage: 1.1% carbon, 0.6% silicon, 11.8% manganese, 1.2% chromium, 0.3% molybdenum, 0.45% vanadium, 0.15% titanium, phosphorus <0.05%, sulfur <0.03%, and the balance for iron.

[0043] The multi-element alloy liner finally prepared includes the following components in mass percentage: 1.1% carbon, 0.6% silicon, 11.8% manganese, 1.2% chromium, 0.3% molybdenum, 0.45% vanadium, 0.15% titanium, phosphorus<0.05%, sulfur< 0.03%, the balance is iron;

[0044] (b) Heat-treat the as-cast liner: put the as-cast liner into the heat treatment furnace, r...

Embodiment 3

[0046] A processing technology for ausferic ductile iron grinding balls suitable for semi-autogenous mills, including the following processes:

[0047] (a) casting molding:

[0048] The temperature for smelting molten iron is 1450°C, and the pouring temperature is 1380°C. Resin self-setting sand molding process. After molding, remove the sprue to make the as-cast liner.

[0049] The molten iron includes the following components in mass percentage: 1.3% carbon, 0.5% silicon, 13% manganese, 1.5% chromium, 0.3% molybdenum, 0.5% vanadium, 0.15% titanium, phosphorus <0.05%, sulfur <0.03%, and the balance for iron.

[0050] The multi-element alloy liner finally prepared includes the following components in mass percentage: 1.3% carbon, 0.5% silicon, 13% manganese, 1.5% chromium, 0.3% molybdenum, 0.5% vanadium, 0.15% titanium, phosphorus<0.05%, sulfur< 0.03%, the balance is iron;

[0051] (b) Heat treatment of the as-cast liner: put the as-cast liner into the heat treatment furn...

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PUM

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Abstract

The invention relates to a multi-element alloy lining plate suitable for a semi-automatic mill and a machining process thereof. The multi-element alloy lining plate is formed by machining smelting molten iron; and the smelting molten iron comprises the following components in percentage by mass: 1.1-1.3% of carbon, 0.3-0.8% of silicon, 11-14% of manganese, 0.8-1.5% of chromium, 0.10-0.5% of molybdenum, 0.3-0.7% of vanadium, 0.05-0.2% of titanium, phosphorus less than 0.05%, sulfur less than 0.03%, and the balance of iron. The technical scheme of the invention provides a novel lining plate suitable for a large semi-automatic mill; and the lining plate satisfies the requirements of wear resistance and high toughness by a large semiautomatic-milled lining plate, is long in use period and low in cost, and largely reduces the cost of a dressing plant.

Description

technical field [0001] The invention relates to the technical field of a multi-element alloy liner, in particular to a multi-element alloy liner suitable for semi-autogenous mills and its processing technology. Background technique [0002] At present, the lining plates of large semi-autogenous mills at home and abroad mostly use high-carbon chromium-molybdenum alloy lining plates. The impact toughness of high carbon chromium molybdenum alloy lining plate is relatively low due to the high carbon content and alloy content. The impact value is generally only 30-40 joules. Secondly, the high carbon chromium molybdenum alloy lining plate needs to ensure a certain impact toughness. The air cooling and tempering process is usually adopted during heat treatment, and the obtained structure is tempered troostite, which has moderate hardness and poor wear resistance. Since the diameter of the semi-autogenous mill is relatively large, the impact and wear of the liner during the operat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/18C22C38/12C22C38/14C21D1/18C21D9/00
CPCC22C38/04C21D1/18C21D9/0081C21D2211/001C21D2211/004C22C38/02C22C38/12C22C38/14C22C38/18
Inventor 王景荣王景利王景会王荣伟凌海军
Owner CHENGDE RONGMAO CAST STEEL
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