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Guard rail and preparation method thereof

A guard rail and ceramic layer technology, which is applied in the direction of rails, steel rails, manufacturing tools, etc., can solve the problems of demanding production equipment, low production efficiency, and low bonding strength of coatings

Active Publication Date: 2017-02-22
SUZHOU FURUTA AUTOMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the surface coating technology of metal materials includes: laser cladding method, high temperature self-propagating sintering technology, powder metallurgy technology, material vapor deposition technology (including: chemical vapor deposition (CVD), physical vapor deposition (PVD)), etc. The method of material coating includes chemical vapor deposition method, physical vapor deposition method, thermal spraying method, hot-dip coating method, etc., but these methods have the disadvantages of demanding production equipment, low production efficiency, and low coating bonding strength.

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  • Guard rail and preparation method thereof
  • Guard rail and preparation method thereof
  • Guard rail and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Embodiment 1: the preparation method of guard rail, comprises the steps:

[0072] 1. First prepare a tungsten plate 2, in which the purity of tungsten should be controlled at 99.7%. The tungsten plate 2 should be surface treated first, the steps are as follows:

[0073] The first step is pickling, choose 300ml / L hydrochloric acid, and then rinse with running water;

[0074] In the second step of pickling, choose 300ml / L hydrofluoric acid, and then rinse with running water;

[0075] The third step is surface grinding, using 800 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the tungsten plate 2 is controlled at 0.2mm.

[0076] 2. According to the size of the guard rail, use polystyrene foam to make the lost foam of the guard rail 8. According to the working force of the guard rail, the main wear parts are the rail head and the rail waist surface of the guard rail. Fix the tungsten plate on the surface of the rail head and the...

Embodiment 2

[0085] Embodiment 2: the preparation method of guard rail, comprises the steps:

[0086] 1. Prepare a tungsten plate 2 first, wherein the purity of tungsten should be controlled at 99.8%. The tungsten plate 2 should be surface treated first, and the thickness of the tungsten plate 2 should be controlled at 0.8mm. Proceed as follows:

[0087] The first step is pickling, 60ml / L phosphoric acid, and then rinse with running water;

[0088] The second step is pickling, 200ml / L sulfuric acid, and then rinse with running water;

[0089] The third step is surface grinding, using 1000 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol.

[0090] 2. According to the size of the guard rail, use polystyrene foam to make the lost foam of the guard rail 8. According to the working force of the guard rail, the main wear parts are the rail head and the rail waist surface of the guard rail. The tungsten plate is fixed on the surface of the rail head and the rail waist of th...

Embodiment 3

[0099] Embodiment 3: the preparation method of guard rail, comprises the steps:

[0100] 1. Prepare a tungsten plate 2 first, wherein the purity of the tungsten is controlled at 99.8%, and the thickness of the tungsten plate 2 is controlled at 1 mm. The tungsten plate 2 should be surface treated first, the steps are as follows:

[0101] The first step is pickling, 120ml / L hydrogen peroxide, and then rinse with running water;

[0102] The second step is pickling, 240ml / L hydrogen peroxide, and then rinse with running water;

[0103] The third step is surface grinding, using 1000 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol.

[0104] 2. According to the size of the guard rail, use polystyrene foam to make the lost foam of the guard rail 8. According to the working force of the guard rail, the main wear parts are the rail head and the rail waist surface of the guard rail. The tungsten plate is fixed on the surface of the rail head and the rail waist o...

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Abstract

The invention provides guardrails. The surfaces of the working positions of the guardrails are coated with carbide coatings. The invention also provides a manufacturing method of the guardrails. The upper and the lower surfaces of the working positions of the guardrails are coated with the carbide coatings. Quasi-single crystal WC compact ceramic coatings, micron WC ceramic coatings and WC-and-basal body compound coatings are distributed in turn in a gradient way from outside to inside and carbon steel surfaces are coated with the quasi-single crystal WC compact ceramic coatings, the micron WC ceramic coatings and the WC-and-basal body compound coatings. Basal body-and-tungsten complexes that are obtained in a casting way are introduced with an outer carbon source from the outside, and then heating operation and heat preservation operation are performed so that the carbide coatings are formed on the surfaces of the basal bodies. Metallurgical bonding is applied between each of the coatings and each of the basal bodies, and the bonding force is strong. The guiderails solve the problems of weak bonding force and easy falling situation of particles since metallurgical bonding is not applied between each hard particle and each metal basal body with the conventional method. The abrasion proof performance of the working surfaces of the guardrails is greatly enhanced.

Description

technical field [0001] The invention relates to a guard rail with a wear-resistant coating and a preparation method thereof, in particular to a guard rail with a wear-resistant carbide coating and a preparation method thereof, in particular to a wear-resistant carbide applied to the surface of carbon steel Coated composite guard rail and preparation method thereof. Background technique [0002] The railway guard rail is one of the essential parts at the railway turnout, which is used to ensure the safe and smooth passage of the train when passing the turnout. At present, the guard rails used in railway turnouts are generally made of rail steel. The guard rails made of rail steel are not high in hardness and poor in wear resistance. Under the impact and friction of high-speed wheels, the guard rail working surface (similar to the rail One side) wearing and tearing is faster, and service life is lower, and this has undoubtedly increased the on-site maintenance workload and us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/16E01B5/18C21D9/04C23C8/64B22C3/00
CPCB22C3/00B22D19/16C21D9/04C23C8/64E01B5/18
Inventor 许云华赵娜娜燕映霖梁淑华钟黎声叶芳霞王亮亮邹军涛肖鹏
Owner SUZHOU FURUTA AUTOMATION TECH