Laser-induced metal surface composite TiCN strengthening method with tio2, isopropylamine, carbon black, methane and nitrogen as components

A laser-induced, isopropylamine technology, applied in metal material coating process, coating and other directions, can solve the problems of low bonding strength, low forming temperature, high cost, improve wear resistance, strengthen wear resistance, good hardness and wear resistance

Active Publication Date: 2014-10-22
NANTONG BEST MACHINE CO LTD
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AI Technical Summary

Problems solved by technology

The deposition temperature of the CVD method is high, exceeding the heat treatment temperature of most steel materials, and CVD uses chlorides as raw materials, and requires a set of equipment for preparing Ti-containing halide gases. The process is complicated and the cost is high, which is different from the current green industry. contradict
The PVD method has a lower formation temperature, thinner coating, low bonding strength with the substrate, easy peeling of the coating from the substrate, and poor wrapping properties
[0004] Regardless of the CVD or PVD method, the TiCN coating obtained is relatively thin, with a thickness of only a few microns (μm), and the coating is mechanically bonded to the substrate, the strength of the bonding surface is low, and the coating is prone to peeling off during use.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] 1. Surface treatment of Q235A, 20 steel, 40 steel, 45 steel, 20G, 20Mn, 40Mn and 60Mn carbon structural steel:

[0018] 1. Apply industrial pure TiO on the surface of carbon structural steel 2 And isopropylamine, carbon black mixture, its mass ratio is 9:5:3, and thickness is 1.5 millimeters;

[0019] 2. As the laser spot moves, a mixed gas of methane and nitrogen is passed through, and the flow rates of methane and nitrogen are 9L / min and 7L / min respectively;

[0020] 3. The laser beam scans at a speed of 500mm / min, the laser power is 900W, the laser wavelength is 1.06μm, and the spot diameter is 2mm.

[0021] 4. According to the test results, a TiCN layer with a thickness of up to 600 microns is formed in situ on the surface of carbon structural steel, and the microhardness can reach above HV2600.

[0022] 2. Surface treatment of 20MnV, 40Cr, 35CrMoV and 20CrMnSi alloy structural steel respectively:

[0023] 1. Coating industrial pure TiO on the surface of allo...

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PUM

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Abstract

The invention discloses a method for strengthening a laser induced metal surface layer composite TiCN by using TiO2, isopropylamine, carbon black, methanol and nitrogen as components, and relates to the technical field of strengthening treatment on metal surfaces. A mixture of the TiO2, the isopropylamine and carbon black is applied to the metal surface, and the metal surface applied with the mixture is scanned by a laser beam in a co-existence of the methanol and the nitrogen. By adopting the method, TiCN is generated by in-situ compounding of the metal surface layer, so that the strengthening to the metal surface and the abrasion resistance are realized.

Description

technical field [0001] The invention relates to the technical field of metal surface strengthening treatment. Background technique [0002] Titanium carbide nitride (TiCN) is a non-oxide material with excellent performance and wide application. It is also a coating material with excellent performance. It is an infinite solid solution of titanium carbide and titanium nitride, and has both titanium carbide and titanium nitride. It has the advantages of high hardness, wear resistance, corrosion resistance, oxidation resistance, etc., and has good thermal conductivity, electrical conductivity and chemical stability. It is widely used in cutting tools, powder metallurgy and cermet products. It is the current research and One of the most widely used thin film materials. [0003] The preparation techniques of TiCN coating are mainly chemical vapor deposition (CVD) and physical vapor deposition (PVD). The deposition temperature of the CVD method is high, exceeding the heat treatme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
Inventor 王辉左健民张荣荣童涵肖圣亮
Owner NANTONG BEST MACHINE CO LTD
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