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Steel flat for high-performance farm tools and working tools and processing method of steel flat

A technology for working tools and processing methods, which is applied in the field of high-performance farm tools and flat steel for working tools and its processing, can solve the problems of inability to meet performance requirements and flat steel rolling, and achieves strong process applicability and controllability , The effect of excellent comprehensive product performance and low production cost

Active Publication Date: 2013-12-18
WUKUN STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these processes cannot meet the rolling of flat steel for agricultural or work tools, and cannot meet the performance requirements of flat steel for modern farm tools or work tools. Therefore, a kind of flat steel and Its processing method has become an important way to solve this problem

Method used

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  • Steel flat for high-performance farm tools and working tools and processing method of steel flat

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The flat steel for high-performance farm implements and work tools has a chemical composition of C: 0.43wt%, Si: 0.18wt%, Mn: 0.60wt%, S: 0.021wt%, P: 0.018wt%, and the rest are Fe and Unavoidable impurities obtained by the following procedure:

[0033] A. Molten steel smelting and deoxidation alloying: Add molten iron, scrap steel and pig iron into the LD oxygen converter, carry out conventional top-bottom compound blowing, add lime, dolomite and magnesite balls according to the conventional amount to make slag, and control the carbon content of the end point to 0.08 wt%, the tapping temperature is 1663°C; add lime to the bottom of the ladle before tapping, the amount of lime added is: 4.0kg / t steel; slag washing and full bottom blowing argon process are adopted when tapping, and the flow rate of argon is controlled at 20NL / min, when the amount of molten steel in the ladle is greater than 1 / 4, add 7.5kg / t to the ladle in turn 钢 High-carbon ferromanganese (of which Mn...

Embodiment 2

[0041] The flat steel for high-performance farm tools and working tools has a chemical composition of C: 0.45 wt%, Si: 0.24 wt%, Mn: 0.67 wt%, S: 0.025 wt%, P: 0.025 wt%, and the rest is Fe and unavoidable impurities obtained through the following procedures:

[0042] A. Molten steel smelting and deoxidation alloying: Add molten iron, scrap steel and pig iron into the LD oxygen converter, carry out conventional top-bottom compound blowing, add lime, dolomite and magnesite balls according to the conventional amount to make slag, and control the carbon content at the end point to 0.10 wt%, the tapping temperature is 1665°C; add lime to the bottom of the ladle before tapping, and the amount of lime added is: 4.0kg / t steel; slag washing and full bottom argon blowing process are adopted when tapping, and the argon flow rate is controlled at 40NL / min, when the amount of molten steel in the ladle is greater than 1 / 4, add 8.1kg / t to the ladle in turn 钢 High-carbon ferromanganese (of...

Embodiment 3

[0050] The flat steel for high-performance farm tools and work tools has a chemical composition of C: 0.47 wt%, Si: 0.30 wt%, Mn: 0.75 wt%, S: 0.025 wt%, P: 0.025 wt%, and the rest is Fe and unavoidable impurities obtained through the following procedures:

[0051] A. Molten steel smelting and deoxidation alloying: Add molten iron, scrap steel and pig iron into the LD oxygen converter, carry out conventional top-bottom compound blowing, add lime, dolomite and magnesite balls according to the conventional amount to make slag, and control the carbon content of the end point to 0.12 wt %, the tapping temperature is 1650°C; lime is added to the bottom of the ladle before tapping, and the amount of lime added is: 4.0kg / t steel; slag washing and full bottom argon blowing process are adopted during tapping, and the argon flow rate is controlled at 30NL / t min, when the amount of molten steel in the ladle is greater than 1 / 4, add 9.5kg / t to the ladle in turn 钢 High-carbon ferromangane...

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Abstract

The invention discloses steel flat for high-performance farm tools and working tools and a processing method of the steel flat. The steel flat is composed of the following components in percentage by weight: 0.43-0.47 wt% of C, 0.18-0.30 wt% of Si, 0.60-0.75 wt% of Mn, not larger than 0.025 wt% of S, not larger than 0.025 wt% of P, and the balance of Fe and inevitable impurities. The steel flat is prepared by the procedures of molten steel smelting and deoxidation alloying, molten steel LF furnace refining, molten steel casting, billet heating, rolling and steel finishing. The 90mm*16mm steel flat for hoe and shovel tools is obtained by the processing method disclosed by the invention, the mechanical processing property of the steel flat is better than that of GB / T699 standard, and the section of the steel flat is rectangular. Compared with 45 steel for hoe and shovel tools produced by a complete continuous-rolled bar rolling mill process, the steel flat disclosed by the invention has the advantages that the rolling cost is reduced by more than 20 Yuan / ton, and the steel flat has the advantages of low production cost, strong process adaptability and controllability, excellent comprehensive product performance and the like, thereby being capable of well meeting the requirements of city greening and farm production development.

Description

technical field [0001] The invention belongs to the technical field of metal material processing and forming, and in particular relates to a flat steel for high-performance farm implements and work tools and a processing method thereof. Background technique [0002] With the demolition, reconstruction and expansion of old urban areas in large and medium-sized cities, the construction of new towns, the construction of some new industrial parks, and the upgrading of expressways, the requirements for urban gardens and road greening are getting higher and higher, and the workload of greening is doubled. Large; at present, some basic tools for urban greening are relatively simple, and there is a large demand for flat steel for hoes and shovels in order to develop planting in plateau mountainous areas such as farm product planting bases. Although there are standards for the materials used to make agricultural tools in China such as GB / T1199 "Agricultural Composite Steel" and GB / T1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C21D8/02
Inventor 陈伟邓家木王卫东庾郁梅吴光耀苏灿东杜龙文玉兵
Owner WUKUN STEEL
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