Trough type steel rail resistant to concrete corrosion and production method of trough type steel rail

A technology of grooved steel rail and concrete, which is applied in the direction of track, track superstructure, manufacturing converter, etc., to meet the requirements of service performance and corrosion resistance, improve the corrosion resistance of concrete, and reduce the cost of alloy

Inactive Publication Date: 2019-02-01
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Prior to the present invention, none of the patents disclosed at home and abroad related to the corrosion resistance of channel rails to concrete

Method used

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  • Trough type steel rail resistant to concrete corrosion and production method of trough type steel rail
  • Trough type steel rail resistant to concrete corrosion and production method of trough type steel rail
  • Trough type steel rail resistant to concrete corrosion and production method of trough type steel rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0032] The schematic diagram of the production process of the concrete corrosion-resistant hot-rolled channel rail described in embodiments 1 to 5 is shown in figure 1 , the specific preparation method includes the following steps: desulfurization of molten iron, 120-ton converter smelting, argon blowing, ladle furnace refining, vacuum treatment, continuous casting, heating, rolling, and the parameters of the main steps are:

[0033] Converter smelting: slag basicity is controlled at 2.5-4.5, tapping temperature control target: 1660±15°C, when tapping molten steel is about 1 / 4, deoxidizing alloys such as silicon and manganese and recarburizers are added along with the steel flow, and the molten steel is tapped to 3 / 4, all alloys and carburizers are added;

[0034] Ladle furnace refining: white slag operation is adopted, the slag basicity is controlled at 2-4, and the chemical composition is adjusted according to the target composition after forming white slag; LF furnace proc...

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PUM

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Abstract

The invention discloses a hot-rolled trough type steel rail resistant to concrete corrosion. Components comprise, by mass percent, 0.62%-0.80% of C, 0.60%-1.30% of Mn, 0.40%-0.90% of Si, not larger than 0.025% of S, not larger than 0.025% of P, not larger than 0.6% of Cu, not larger than 0.6% of Cr and the balance Fe and inevitable impurities. Through the optimized components and the production process, the trough type steel rail resistant to concrete corrosion is produced, and the requirement for corrosion resistance of the hot-rolled trough type steel rail resistant to concrete corrosion ismet; and the related production process is simple, the preparation cost is low, and the trough type steel rail is suitable for application and popularization.

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy and materials, and in particular relates to a concrete corrosion-resistant grooved steel rail and a production method thereof. Background technique [0002] Modern tram is an advanced transportation mode developed through comprehensive transformation and upgrading on the basis of traditional tram, and it is one of the important urban rail transportation modes. As a new type of green, medium and low-capacity public transportation system, modern trams have the characteristics of energy saving, environmental protection, comfort and safety, flexible operation, and reasonable cost. . According to my country's urban rail transit network planning, the long-term planning line of trams in the country is nearly 5,000 kilometers, and the lines to be built before 2020 will exceed 2,500 kilometers, with a total investment of 300 billion. At present, more than 50 large and medium-sized cities in the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28C21C7/10C21D8/00C22C33/04C22C38/02C22C38/04C22C38/20B22D11/115E01B21/00
CPCB22D11/115C21C5/28C21C7/10C21D8/005C22C33/04C22C38/002C22C38/02C22C38/04C22C38/20E01B21/00
Inventor 王瑞敏周剑华朱敏费俊杰郑建国欧阳珉路赵国知
Owner 武汉钢铁有限公司
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