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A kind of electric arc spraying wear-resistant iron-based TIC coating and preparation method thereof

An arc spraying and iron-based technology, which is applied in coating, metal material coating process, fusion spraying, etc., can solve the problems of low coating cost, difficult control, and low wear resistance, and achieve low cost and high production efficiency. High and easy-to-obtain raw materials

Active Publication Date: 2017-11-14
WEIFANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an arc spraying wear-resistant iron-based TiC coating that can be obtained by arc spraying to induce self-reaction synthesis of TiC hard phase, which can obtain a coating with small thickness limitation, low cost and good wear resistance. , to solve the shortcomings of existing methods such as high cost, difficult control, and low wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Preparation of powder core

[0019] Titanium powder, chromium powder and sucrose are used as raw materials, and the powder ratio is carried out according to the atomic ratio of Ti:C:Cr 10:12:1, and mechanical ball milling is carried out with anhydrous ethanol as the medium, the material-ball ratio is 1:4, and the ball milling time is 14h , The resulting slurry was vacuum dried at 120° C. for 10 h. The dried powder was carbonized in a nitrogen protective atmosphere. The carbonization process was as follows: heating rate 6°C / min, heat preservation at 270°C for 1.5h, heat preservation at 360°C for 4h, crushing and sieving to obtain powder cores.

[0020] 2. Preparation of wear-resistant iron-based TiC coating by arc spraying

[0021] Use 14X0.4 (width 14mm±0.05, thickness 0.4mm±0.05, the same below) carbon steel strip. It is first rolled into a U shape, and the aforementioned powder core is added in the U-shaped groove, and the powder core accounts for 28% of the tota...

Embodiment 2

[0023] 1. Preparation of powder core

[0024] Titanium powder, chromium powder and sucrose are used as raw materials, and the powder ratio is carried out according to the atomic ratio of Ti:C:Cr 10:13:2, and mechanical ball milling is carried out with absolute ethanol as the medium, the material-ball ratio is 1:4, and the ball milling time is 15h , and the resulting slurry was vacuum-dried at 100° C. for 16 h. The dried powder was carbonized in a nitrogen protective atmosphere. The carbonization process was as follows: heating rate 7°C / min, heat preservation at 265°C for 2 hours, heat preservation at 355°C for 5 hours, crushing and sieving to obtain powder cores.

[0025] 2. Preparation of wear-resistant iron-based TiC coating by arc spraying

[0026] Choose 14X0.4 carbon steel belt. It is first rolled into a U shape, and the aforementioned powder core is added in the U-shaped groove, and the powder core accounts for 35% of the total weight of the powder core wire material o...

Embodiment 3

[0028] 1. Preparation of powder core

[0029] Using titanium powder, chromium powder and sucrose as raw materials, the powder ratio is carried out according to the atomic ratio of Ti:C:Cr 10:13:1, and mechanical ball milling is carried out with anhydrous ethanol as the medium, the material-ball ratio is 1:4, and the ball milling time is 13h , and the resulting slurry was vacuum-dried at 110° C. for 13 h. The dried powder was carbonized in a nitrogen protective atmosphere. The carbonization process was as follows: heating rate 6.5°C / min, heat preservation at 275°C for 2 hours, heat preservation at 365°C for 3 hours, crushing and sieving to obtain powder cores.

[0030] 2. Preparation of wear-resistant iron-based TiC coating by arc spraying

[0031] Choose 14X0.3 carbon steel belt. It is first rolled into a U shape, and the aforementioned powder core is added in the U-shaped groove, and the powder core accounts for 38% of the powder core wire material gross weight of the prese...

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Abstract

The invention discloses an electric arc spraying wear-resistant iron-based TiC coating and a preparation method thereof. Titanium powder, chromium powder and sucrose are used as raw materials, and the atomic ratio of Ti:C:Cr is 10:11-13:1-2. Ratio proportioning, the powder core is prepared through mechanical ball milling, vacuum drying, carbonization treatment, crushing and sieving, and the powder core and carbon steel belt are prepared together into powder core wire, and then arc spraying is used to trigger self-reaction synthesis of TiC hard The phase is prepared into a wear-resistant iron-based TiC coating. The coating prepared by the powder core wire material developed by the invention has high surface Rockwell hardness and microhardness, and the abrasive wear resistance is far better than that of Q235 low-carbon steel.

Description

technical field [0001] The invention relates to an arc spraying wear-resistant iron-based TiC coating and a preparation method thereof, which belongs to the field of surface engineering in material processing engineering and is mainly used in the surface protection of wearable parts and parts in industries such as electric power, energy, and automobiles. Background technique [0002] Abrasion is the main form of material damage, and it has always been a subject of great concern in the industrial field. It has brought huge economic losses and social harm to human beings. Therefore, using modern science and technology to economically and safely prevent, control or reduce material damage wear, is of great significance. How to prevent wear and reduce the occurrence of catastrophic accidents is a subject that countries all over the world are studying. Using thermal spraying technology, a layer of wear-resistant metal or cermet coating is applied to the wear parts and areas of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/131C23C4/10C23C4/06
Inventor 刘均波王立梅刘均海宋桂香
Owner WEIFANG UNIVERSITY
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