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Abrasion resistant cast steel and preparation method thereof

A technology of cast steel and chemical composition, applied in the field of casting, can solve the problems of poor process stability, high production cost, low performance, etc., and achieve the effects of simple production process, less inclusions, and good wear resistance.

Inactive Publication Date: 2012-03-21
SHANDONG HUIFENG CASTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned wear-resistant cast steel may have high production costs, low performance, or poor process stability.

Method used

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  • Abrasion resistant cast steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Adopt 750 kilograms of intermediate frequency induction furnace to smelt wear-resistant cast steel of the present invention, and its manufacturing process steps are:

[0037] (1) Mixing and heating common scrap steel, pig iron, ferrosilicon and copper plate, heating up to 1563°C, adding ferrotitanium, adjusting the composition before the furnace and raising the temperature to 1594°C, adding aluminum for deoxidation and alloying, and then out of the furnace;

[0038] (2) Broken iron boron, iron zirconium, tellurium copper master alloy and cerium-based rare earth magnesium alloy to small pieces with a particle size of less than 16 mm, dried at 240°C for 4 hours, placed at the bottom of the ladle, and washed with the in-ladle punching method. The molten steel is microalloyed;

[0039] (3) After the molten steel is allowed to stand and slag, it is poured into the mold when the temperature is 1445 ° C. After pouring for 6.0 hours, the castings are unpacked and air-cooled, the ...

Embodiment 2

[0042] Adopt 500 kilograms of intermediate frequency induction furnace to smelt wear-resistant cast steel of the present invention, and its manufacturing process steps are:

[0043] (1) Mix and heat common scrap steel, recarburizer, ferrosilicon and copper plate, heat up to 1579°C, add ferrotitanium, adjust the composition before the furnace and raise the temperature to 1608°C, add aluminum for deoxidation and alloying, and then release from the furnace ;

[0044] (2) Broken iron boron, iron zirconium, tellurium copper master alloy and cerium-based rare earth magnesium alloy to small pieces with a particle size of less than 16mm, dried at 200°C for 5 hours, placed at the bottom of the ladle, and washed with the punching method in the ladle. The molten steel is microalloyed;

[0045] (3) After the molten steel is allowed to stand and slag, it is poured into the mold when the temperature is 1468 °C, and after pouring for 1.0 hours, the castings are unpacked and air-cooled, the ...

Embodiment 3

[0048] Adopt 500 kilograms of intermediate frequency induction furnace to smelt wear-resistant cast steel of the present invention, and its manufacturing process steps are:

[0049] (1) Mixing and heating common scrap steel, pig iron, ferrosilicon and copper plate, heating up to 1570 ℃, adding ferrotitanium, adjusting the composition before the furnace and raising the temperature to 1598 ℃, adding aluminum for deoxidation and alloying, and then out of the furnace;

[0050] (2) Broken iron boron, iron zirconium, tellurium copper master alloy and cerium-based rare earth magnesium alloy to small pieces with a particle size of less than 16mm, dried at 220 °C for 3 hours, placed at the bottom of the ladle, and washed with the punching method in the ladle. The molten steel is microalloyed;

[0051] (3) After the molten steel is left to stand and slag is removed, it is poured into the mold when the temperature is 1455°C. After pouring for 4.0 hours, the castings are unpacked and air-...

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Abstract

The invention discloses abrasion resistant cast steel and a preparation method thereof and belongs to the technical field of casting. The abrasion resistant cast steel comprises the following chemical constituents of: 1.60 to 1.80 of C, 3.5 to 4.0 of Ti, 1.65 to 1.85 of Si, less than 0.8 of Mn, 0.4 to 0.6 of Cu, 0.003 to 0.006 of B, 0.015 to 0.030 of Zr, 0.03 to 0.10 of Te, 0.04 to 0.08 of Ce, 0.015 to 0.040 of Mg, 0.12 to 0.15 of Al, less than 0.04 of S, less than 0.05 of P and the balance of Fe and unavoidable micro impurities, wherein the total of the chemical constituents is 100; and C %=0.25*Ti %+(0.70 to 0.85). The abrasion resistant cast steel can be produced by using an electric furnace and is treated by isothermal quenching; due to high-hardness TiC particles and an austenite-bainite base body which are contained in the abrasion resistant cast steel, the abrasion resistant cast steel has the characteristics of high strength, high hardness, high flexibility, high abrasion resistant and the like; and the service life of an abrasion resistant part can be prolonged obviously.

Description

technical field [0001] The invention relates to a cast steel and a preparation method thereof, in particular to a wear-resistant cast steel and a preparation method thereof, belonging to the technical field of casting. Background technique [0002] Wear is a basic type of component failure. Generally speaking, wear refers to the reduction of the geometric size (volume) of the component. A component that loses the function specified by the original design is called failure. Failure includes complete loss of original function, reduced function and serious damage or hidden danger. Continued use will lose reliability and safety. Metal wear-resistant materials at home and abroad not only consume a lot, but their wear resistance not only affects the service life of components, but also affects the time and frequency of downtime and maintenance of equipment or even the entire production line due to wear and replacement of components, resulting in equipment or production lines. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60C21C5/52C21D1/20B22D1/00
CPCY02P10/20
Inventor 刘宪民刘明亮郭宏涛符寒光
Owner SHANDONG HUIFENG CASTING TECH
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