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Method for improving application performance of nodular cast iron on mine car wheel

A technology of ductile iron and application performance, which is applied in the field of improving the application performance of ductile iron on mining wheels, can solve the problem that the vibration absorption, wear resistance and mobility of steel castings are not as good as those of iron castings, and cannot meet the heavy and high load requirements of mining vehicles. , loss of manpower, material resources, financial resources, etc., to achieve the effect of promoting rapid development, promoting sustainable development of resources, and improving application performance

Inactive Publication Date: 2020-04-14
TONGLING MINGCHENG FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vibration absorption, wear resistance and maneuverability of steel castings are not as good as those of iron castings, and the cost is also higher than that of iron castings.
Therefore, there are continuous attempts to apply ball milled cast iron materials on mine wheels. In the existing technology, the performance of cast iron materials is improved by adding alloying elements (such as copper, molybdenum, nickel, etc.), which improves t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for improving the application performance of nodular cast iron on mine wheels, the preferred solution is to add the prepared composite nanoparticles, inoculants and nodulizers into a ladle, and further pour molten iron into the ladle , to prepare ductile iron castings with high strength properties;

[0017] Specifically, the following steps are included:

[0018] S1: Preparation of composite nanoparticles: Weigh 3.85 grams of titanium boride micropowder and place it in a beaker, add 60 milliliters of ethanol to the beaker, ultrasonicate for 15 minutes, then add 1.70 grams of prepared nano-yttrium oxide and 0.8 grams of hexamethyl Disilazane, continue to sonicate for 40 minutes, use a high-speed centrifuge to centrifuge at a speed of 3000 rpm, separate the precipitate, and dry it in a vacuum oven at 70°C for 5 hours to obtain a dry powder that is placed in a mortar and ground Mix evenly, put it into a sintering furnace, raise the temperature to 780° C. under th...

Embodiment 2

[0023] A method for improving the application performance of nodular cast iron on mine wheels, the preferred solution is to add the prepared composite nanoparticles, inoculants and nodulizers into a ladle, and further pour molten iron into the ladle , to prepare ductile iron castings with high strength properties;

[0024] Specifically, the following steps are included:

[0025]S1: Preparation of composite nanoparticles: Weigh 3.87 grams of titanium boride micropowder and place it in a beaker, add 65 milliliters of ethanol to the beaker, ultrasonicate for 18 minutes, then add 1.73 grams of prepared nano-yttrium oxide and 0.9 grams of hexamethyl Disilazane, continue ultrasonic treatment for 45 minutes, centrifuge at a speed of 3200 rpm in a high-speed centrifuge, separate the precipitate, and dry it in a vacuum oven at 80°C for 6 hours to obtain a dry powder that is placed in a mortar and ground Mix evenly, put it into a sintering furnace, raise the temperature to 790° C. unde...

Embodiment 3

[0030] A method for improving the application performance of nodular cast iron on mine wheels, the preferred solution is to add the prepared composite nanoparticles, inoculants and nodulizers into a ladle, and further pour molten iron into the ladle , to prepare ductile iron castings with high strength properties;

[0031] Specifically, the following steps are included:

[0032] S1: Preparation of composite nanoparticles: Weigh 3.90 grams of titanium boride micropowder and place it in a beaker, add 70 milliliters of ethanol to the beaker, ultrasonicate for 20 minutes, then add 1.76 grams of prepared nano-yttrium oxide and 1.0 grams of hexamethyl Disilazane, continue to sonicate for 50 minutes, use a high-speed centrifuge to centrifuge at a speed of 3400 rpm, separate the precipitate, and dry it in a vacuum oven at 90°C for 7 hours to obtain a dry powder that is placed in a mortar and ground Mix evenly, put it into a sintering furnace, raise the temperature to 800° C. under th...

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Abstract

The invention relates to the technical field of new material machining, and discloses a method for improving the application performance of nodular cast iron on a mine car wheel. The influence of a nodular cast iron smelting process on product performance is explored by researching composite nanoparticles, the prepared composite nanoparticles, inoculant and nodulizer are added into a casting ladle, molten iron is further poured into the casting ladle, the high-strength nodular iron casting is prepared, the performance of the nodular cast iron is comprehensively improved, and the operation safety and the service life of a cast iron ore wheel are prolonged; and the application performance of the nodular cast iron on the mine car wheel can be remarkably improved, the defect problem of replacing cast steel with the nodular cast iron is solved, the strength and toughness of the nodular cast iron are improved, the chemical and mechanical properties are stable, the forming performance is good, the application occasion is expanded, and the economic benefit and the safety benefit are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for improving the application performance of nodular cast iron on mining wheels. Background technique [0002] Mining cars are narrow-gauge railway transportation vehicles for transporting bulk materials such as coal, ore and waste rocks in mines, and generally must be pulled by locomotives or winches. According to the structure and unloading method, the mine car is divided into: fixed mine car (material car, flat car), dump mine car, single side curved track side unloading mine car, bottom (side) unloading mine car and shuttle mine car There are 5 categories in total. As the main part of the mine car, the expansion wheel plays the role of running load. [0003] At present, the processing material commonly used in mine wheels is cast steel, and its strength is higher than that of cast iron. However, the vibration absorption, wear resistance...

Claims

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Application Information

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IPC IPC(8): C22C37/04C22C37/10C22C33/08C21C1/10
CPCC21C1/105C22C33/10C22C37/04C22C37/10
Inventor 陈斌张蔓青肖颍
Owner TONGLING MINGCHENG FOUNDRY
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