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Steel rail capable of preventing subway stray current corrosion, paint for coating said steel rail and preparation method

An anti-corrosion coating and stray current technology, which is applied to the rails for preventing stray corrosion in subways, and the coating used for coating the rails, can solve the problems of reducing the degree of stray corrosion, but cannot completely eliminate the stray corrosion, so as to solve the problem of stray corrosion. Flow corrosion, increased stiffness, smooth coating effect

Active Publication Date: 2007-04-18
PANZHIHUA IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only achieve the effect of reducing the leakage of traction current and reducing the degree of stray corrosion, but cannot completely eliminate stray corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1 Preparation of the coating of the present invention

[0075] Preparation of insulating paint:

[0076] Component I: ①Butanol etherified melamine urethane resin film-forming material 50kg, ②Modified calcium carbonate whisker filler 25kg, ③Titanium dioxide: 2kg, ④Titanate TC-2 type coupling agent 2kg, ⑤Polymer Oxyethylene laurate diluent 11kg, ⑥acetone 9kg, ⑦modified silicone BYK306 leveling agent 1kg.

[0077] (1) In the raw material components ①, 1 / 2 of the amount of ⑤, and 1 / 2 of the amount of ⑥, stir and dilute to a transparent liquid at a medium speed (800-1000r / min);

[0078] (2) Add ②, ③, ④ to the dilution in step (1), and disperse at high speed (1200~1500r / min) for 20min~30min, until the fineness is ≤45μm;

[0079] (3) Add ⑦, the remaining 1 / 2 amount ⑤, and the remaining 1 / 2 amount ⑥ to the mixture in step (2), and stir evenly at low speed (300-500 r / min).

[0080] (4) Packing in barrels.

[0081] Component II: take 20kg of a commercially available l...

Embodiment 2

[0090] Example 2 Preparation of the coating of the present invention

[0091] The preparation method of insulating coating is as follows:

[0092] Component I: ①Butanol etherified melamine urethane resin film-forming material 40kg, ②Modified calcium carbonate whisker filler 28kg, ③Titanium dioxide: 3kg, ④Titanate TC-2 type coupling agent 3kg, ⑤Polymer Oxyethylene laurate diluent 13kg, ⑥acetone 11kg, ⑦modified silicone BYK306 leveling agent 2kg.

[0093] (1) Mix ①, 1 / 2 of the amount of ⑤, and 1 / 2 of the amount of ⑥ in the above proportions, stirring and diluting them to a transparent liquid at a medium speed (800-1000r / min);

[0094] (2) Add ②, ③, ④ to the dilution in step (1), and disperse at high speed (1200~1500r / min) for 20min~30min, until the fineness is ≤45μm;

[0095] (3) Add ⑦, the remaining 1 / 2 amount ⑤, and the remaining 1 / 2 amount ⑥ to the mixture in step (2), and stir evenly at low speed (300-500 r / min).

[0096] (4) Packing in barrels.

[0097] Component II: Take...

Embodiment 3

[0106] Example 3 Preparation of the coating of the present invention

[0107] The preparation method of insulating coating is as follows:

[0108] Component I: ①Butanol etherified melamine urethane resin film-forming material 45kg, ②Modified calcium carbonate whisker filler 26kg, ③Titanium dioxide: 2.5kg, ④Titanate TC-2 type coupling agent 2.5kg, ⑤Polyoxyethylene laurate diluent 12kg, ⑥acetone 10.5kg, ⑦modified silicone BYK306 leveling agent 1.5kg.

[0109] (1) 1, 1 / 2 the amount of ⑤, 1 / 2 the amount of ⑥ of component I, stir and dilute to a transparent liquid at a medium speed (800~1000r / min);

[0110] (2) Add ②, ③, ④ to the dilution in step (1), and disperse at high speed (1200~1500r / min) for 20min~30min, until the fineness is ≤45μm;

[0111] (3) Add ⑦, the remaining 1 / 2 amount ⑤, and the remaining 1 / 2 amount ⑥ to the mixture in step (2), and stir evenly at low speed (300-500 r / min).

[0112] (4) Packing in barrels.

[0113] Component II: Take 10kg of commercially availab...

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Abstract

This invention involves the chemical engineering and the surface processing technique fields .The invention provided a kind of steel rail that keeps subway from fan to flow to decay, the strength of insulating is 45.0V / mm-103.4V / mm; The specific resistance is 6.7*1013omega .cm- 5.8*1015omega .cm. The steel rail is made through putting on insulate coating and antisepsis eclipse coating outside it. The invention of steal rail's produce craft is simple and operating is simple too, The steal rail's surface layer from producing can cut off the leak that lead electric current lies in the subway circuit ,resolving the problem of dying decay, having a good market foreground.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and surface treatment, in particular to a steel rail for preventing the corrosion of subway turbulence, and a paint used for coating the steel rail. Background technique [0002] At present, the subway project is developing rapidly as an important means of transportation. The direct current drawn by the subway locomotive flows along the circuit formed by the overhead wires, the locomotive carriages and wheels, and the track laid on the ground. During the operation of the subway, part of the current will leak from the track to the track bed and the surrounding soil, thereby causing the metal buried underground. Electrochemical corrosion of steel bars in pipelines and reinforced concrete main structures occurs. This leakage current is called stray current, also known as stray current in subway engineering. The corrosion of buried metal objects caused by this stray current is called stray c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B5/02B05D7/14B05D5/00C09D1/00
Inventor 田冰梅东生徐权邹明张勇刚马建权
Owner PANZHIHUA IRON AND STEEL
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