Corrosion-resisting steel rail and process for producing the same

A production method and corrosion-resistant technology, which are applied in the plating, coating, metal material coating process of superimposed layers, etc., can solve the problems of hydrogen absorption of high-carbon rails, large investment, brittle fracture, etc., and achieve low production costs. , The production line is simple, and the anti-scratch performance is good.

Inactive Publication Date: 2006-12-27
PANZHIHUA IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of chemical methods to treat surface oil and rust, it is easy to cause high-carbon steel rails to absorb hydrogen and cause brittle fractures; the waste acid and waste liquid discharge treatment is facing environmental protection pressure, and the investment is large; the steel rails need to be inverted on the production line, and the process is complicated and cumbersome.

Method used

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  • Corrosion-resisting steel rail and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] On the arc spraying production line of corrosion-resistant steel rails, the finished steel rails are placed upright on the roller table line driven by the motor and move at a constant speed, and the steel rails enter the work of shot blasting or sandblasting, cleaning, arc spraying and organic coating spraying or rolling in sequence. Area. First, use a shot blasting machine to clean the oxide scale and rust on the rail waist and rail bottom to ensure that there is no oxide scale and rust on both sides of the rail waist and rail bottom, and the surface roughness is Rz2.5, and then use clean and dry compressed air to blow Sweep the floating dust on the surface of rail waist and rail bottom. Then arrange two arc spraying guns side by side and longitudinally on both sides of the rail waist and rail bottom, spray the metal layer formed by Ф2.0mm zinc wire, spray the arc voltage at 30V, the current at 160A, and the atomizing gas pressure at 0.65 MPa, the spray gun is 150mm a...

Embodiment 2

[0025] On the arc spraying production line of corrosion-resistant steel rails, the finished steel rails are placed upright on the roller table line driven by the motor and move at a constant speed, and the steel rails enter the work of shot blasting or sandblasting, cleaning, arc spraying and organic coating spraying or rolling in sequence. Area. First, use a sandblasting machine to clean the scale and rust on the rail waist and rail bottom to ensure that there is no scale and rust on both sides of the rail waist and rail bottom, and the surface roughness is Rz5, and then use clean and dry compressed air to blow the rails The surface of the waist and rail bottom is dusty. Then arrange three arc spraying guns side by side and vertically on both sides of the rail waist and the bottom side of the rail respectively, and spray the metal layer formed by Ф3.0mm aluminum wire. The spraying arc voltage is 30V, the current is 200A, and the atomizing gas pressure is 0.65 MPa, the spray ...

Embodiment 3

[0027] On the arc spraying production line of corrosion-resistant steel rails, the finished steel rails are placed upright on the roller table line driven by the motor and move at a constant speed, and the steel rails enter the work of shot blasting or sandblasting, cleaning, arc spraying and organic coating spraying or rolling in sequence. Area. First, use a shot blasting machine to clean the oxide scale and rust on the rail waist and rail bottom to ensure that there is no oxide scale and rust on both sides of the rail waist and rail bottom, and the surface roughness is Rz12.5, and then use clean and dry compressed air to blow Sweep the floating dust on the surface of rail waist and rail bottom. Then arrange four arc spraying guns side by side and longitudinally on both sides of the rail waist and rail bottom, spray the metal layer formed by Ф2.0mm zinc-aluminum alloy wire, the spraying arc voltage is 30V, the current is 160A, the atomizing gas The pressure is 0.65MPa, and t...

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Abstract

This invention provides the anticorrosive railway and producing method. The steps are: 1) locate the railway on production line and move with even speed. Peening or blasting pretreatment with peening machine or sander; 2) arc spraying zinc, aluminium or alloy on rail waist and base surface; 3) auto spraying, roll coating or human coating the organic closed layer or paint layer. In this invention there is no waste acid or waste liquid. The anticorrosive life can reach 5-8 years, same as the normal life of railway. There is no power on railway and will not interfere railway signal.

Description

technical field [0001] The invention relates to a railway steel rail and a production method thereof, in particular to a corrosion-resistant railway steel rail and a production method thereof. Background technique [0002] There are three main types of existing anti-corrosion railway rails: one is the anti-corrosion railway rails made by ZL 92108213.4 "Chodic Protection Method for Rail Corrosion in Tunnels". Since this method uses direct current, it is easy to interfere with railway signals and the operation is more complicated. The second class is ZL 02222327.4 disclosed "corrosion-resistant railway rail", CN03117936.3 disclosed "a kind of corrosion-resistant coated steel rail production process" and "corrosion-resistant steel rail in the closed tunnel" (Tian Shenzhe also, new line, 2000, 54(1), P36~38), the corrosion-resistant railway rail made by brushing organozinc paint, tar epoxy resin and ethyl nitroformate paint is easy to fall off due to the low binding force betwee...

Claims

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Application Information

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IPC IPC(8): C23C28/00C23C4/02C23C4/06C23C4/18B05D7/14C23C4/08C23C4/131
Inventor 周家琮李大东徐权梅东生余腾义
Owner PANZHIHUA IRON AND STEEL
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