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Method for preparing reaction nitrogen arc surfacing titanium carbonitride reinforced titanium based complex coating

A technology of titanium carbonitride and composite coating, applied in the direction of arc welding equipment, welding equipment, welding equipment, etc., can solve the problems of high production cost, limited universal application, expensive equipment, etc., to improve surface wear resistance, The effect of improving preparation efficiency and simple method

Inactive Publication Date: 2009-12-02
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Analyzing the above methods, it will be found that they generally have one or several disadvantages such as expensive equipment, complicated process, thin coating, low coating preparation efficiency, and high production cost, which limits their general application in industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In this example, titanium carbonitride-enhanced wear-resistant coatings were prepared on the surfaces of commercially pure titanium TA2 and TC4 titanium alloy specimens of 30 mm × 15 mm × 10 mm, respectively. The specific implementation methods are as follows:

[0016] (1) Dilute the self-made binder with acetone and adjust the high-purity graphite powder with a particle size of 200 mesh and a carbon content of 99.99% into a paste.

[0017] (2) Polish the surface of the test piece with 200-grit sandpaper until a metallic luster appears, and completely remove the scale, rust and other pollutants on the surface of the test piece.

[0018] (3) Clean the polished surface of the test piece with acetone alcohol solution to completely remove the oil stain on the surface of the test piece.

[0019] (4) Coat the pre-prepared pasty graphite powder on the surface of the polished and cleaned test piece with a coating thickness of 1.5mm, and keep compacting the coating layer during ...

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Abstract

The invention provides a method for preparing a reaction nitrogen arc surfacing titanium carbonitride reinforced titanium based complex coating. The method comprises the following steps: adopting the prior direct current tungsten nitrogen arc welding equipment; taking tungsten electrode as cathode and substrate of titanium and titanium alloy as anode; using nitrogen arc surfacing under the protection of nitrogen gas; and performing the reaction on the surfaces of the substrates of titanium and titanium alloy to synthesize the titanium carbonitride reinforced titanium based complex coating. The titanium carbonitride reinforced titanium based complex coating prepared by the method has the advantages of large thickness, metallurgical bonding with the substrates, high bonding strength, high hardness of the coating, and good wear resistance.

Description

technical field [0001] The invention relates to a large-thickness titanium carbonitride-reinforced titanium-based composite coating preparation technology, in particular to a method for preparing a titanium carbonitride-reinforced titanium-based composite coating on the surface of titanium and titanium alloy substrates. Background technique [0002] Titanium and its alloys are widely used in chemical industry, energy, aviation, medicine and other fields because of their light weight, high mechanical properties and excellent corrosion resistance. However, the low hardness and poor wear resistance of titanium and its alloys limit its wider application. Therefore, it is necessary to improve the wear resistance of the surface of titanium and its alloys. Titanium carbonitride is a non-oxide material with excellent performance and wide application. It is also a coating material with excellent performance. It has the characteristics and advantages of titanium nitride and titanium c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/173B23K9/235B23K9/095B23K35/04
Inventor 郝建军马跃进张淑云赵建国李建昌马璐萍
Owner HEBEI AGRICULTURAL UNIV.
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