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Laser-induced reinforcing method for compositing TiCN on metal surface layer

A laser-induced, metal surface technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of low strength of the joint surface, the coating is prone to peeling, etc., to achieve good hardness and wear resistance, and the effect of strengthening and improving

Active Publication Date: 2013-04-03
路亚科消防车辆制造有限公司
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AI Technical Summary

Problems solved by technology

[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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Examples

Experimental program
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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 tetramethyl urea, carbon black mixture, its mass ratio is 6:5:3, 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. After testing, the surface layer of the treated carbon structural steel is compounded with TiCN up to 500 microns, 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 alloy structural steel 2 And ...

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Abstract

The invention discloses a laser-induced reinforcing method for compositing TiCN on a metal surface layer, and relates to the technical field of reinforcement of a metal surface. The reinforcing method takes TiO2, tetramethyl urea, carbon black, methane and nitrogen as components. A mixture of TiO2, tetramethyl urea and carbon black is coated on the metal surface; and laser beams are used for scanning the metal surface coated with the mixture under the condition that methane and nitrogen coexist. According to the reinforcing method, TiCN is generated on the metal surface layer in an in-situ composite manner; the metal surface is reinforced; and the wear resistance of the metal surface is improved.

Description

technical field [0001] The invention relates to the technical field of metal surface strengthening. 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 treatment tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
Inventor 王辉左健民童涵肖圣亮张荣荣
Owner 路亚科消防车辆制造有限公司
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