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Wear resistant coating layer of titanium alloy cutter and preparation method thereof

A wear-resistant coating, titanium alloy technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of poor coating thickness and substrate bonding force, low effective service life, low hardness, etc., to improve wear resistance. , prolong the effective service life, improve the effect of wear resistance and hardness

Active Publication Date: 2017-12-15
沈阳钛成科技合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, especially in the military industry and marine industry, titanium alloy knives are basically used, and the hardness value of the material used to make the knives is greater than 53HRC, but the hardness value of the knives made of the existing grades of titanium alloy is much lower than Use requirements, traditional titanium alloy tools have poor wear resistance, low hardness and low effective service life, and coatings prepared by PVD or CVD processes have defects such as thin thickness and poor bonding with the substrate.

Method used

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  • Wear resistant coating layer of titanium alloy cutter and preparation method thereof
  • Wear resistant coating layer of titanium alloy cutter and preparation method thereof
  • Wear resistant coating layer of titanium alloy cutter and preparation method thereof

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preparation example Construction

[0038] figure 1 A schematic flow diagram of a method for preparing a wear-resistant coating on a titanium alloy tool provided according to an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0039] Step 101: After pre-treating the surface of the titanium alloy tool, it is placed in the processing chamber of the laser welding system for vacuuming and argon filling; Step 102: drying, cooling and mixing the pre-prepared welding alloy powder It is then placed in the powder feeder of the laser welding system, and laser welding is used for laser welding.

[0040] Wherein, in step 101, the surface of the titanium alloy tool is pretreated and placed in the processing chamber of the laser welding system for vacuuming and argon filling treatment.

[0041] Specifically, the laser cladding system includes a laser, a cooling unit, a powder feeder, and a processing chamber. The titanium alloy tool is preprocessed and placed in the processing chamber for vacuum...

Embodiment 1

[0064] In this embodiment, the raw materials of the deposited alloy powder are pure titanium powder, pure chromium powder and graphite, wherein the pure titanium powder, pure chromium powder and graphite are mixed in a ratio of 87:11:2; the composition of the deposited alloy powder and The mass percentages are: Ti: 86.62%, Cr: 10.88%, C: 2.18%, Al: 0.013%, Si: 0.018%; the content of related impurities is: Fe≤0.08%, N≤0.01%, H≤0.006%, O≤0.09%, the balance is other elements.

[0065] The thickness of the substrate of the titanium alloy tool is 2.5mm. After the surface of the titanium alloy tool is polished, polished, degreasing, cleaned, and dried, it is placed in the processing chamber of the laser welding system for vacuuming and argon filling;

[0066] Fully mix the pre-prepared 100-200 mesh welding alloy powder, and dry it at 100-200℃ for 2h. After cooling, place it in the powder feeder of the laser welding system, and adjust the speed of the powder feeder to The powder delivery...

Embodiment 2

[0071] In this embodiment, the raw materials of the deposited alloy powder are pure titanium powder, pure chromium powder and graphite, and the pure titanium powder, pure chromium powder and graphite are mixed in a ratio of 86:12:2; wherein The composition and mass percentage are: Ti: 85.62%, Cr: 11.68%, C: 2.25%, Al: 0.016%, Si: 0.019%; the content of related impurities is: Fe≤0.06%, N≤0.03%, H≤0.006 %, O≤0.08%, the balance is other elements.

[0072] The thickness of the substrate of the titanium alloy tool is 6mm. After the surface of the titanium alloy tool is polished, polished, degreasing, cleaned, and dried, it is placed in the processing chamber of the laser cladding system for vacuuming and argon filling treatment;

[0073] Fully mix the pre-prepared 100-200 mesh welding alloy powder, and dry it at 100-200℃ for 2h. After cooling, place it in the powder feeder of the laser welding system, and adjust the speed of the powder feeder to The powder feeding rate of the welding b...

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Abstract

The invention provides a wear resistant coating layer of a titanium alloy cutter and a preparation method thereof. The wear resistant coating layer comprises the components of Ti, Cr, C, Al and Si, wherein the mass percentages of all the components are as follows: 84.76-89.80% of Ti, 8.67-13.00% of Cr, 1.25-2.26% of C, 0.018-0.027% of Al, and 0.013-0.020% of Si. In the wear resistant coating layer of the titanium alloy cutter and the preparation method thereof, a laser cladding method is adopted to clad titanium alloy mixed powder on the surface of the titanium alloy cutter for in-situ generation of a complete TiC network skeleton structure on the surface of the titanium alloy cutter, so that the wear resistance and the hardness of the titanium alloy cutter are improved, and the effective service life of the titanium alloy cutter is prolonged.

Description

Technical field [0001] The invention relates to the field of titanium alloy application materials, in particular to a titanium alloy tool wear-resistant coating and a preparation method thereof. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Titanium alloys are widely used in various fields because of their high strength, good corrosion resistance, and high heat resistance. Many countries in the world have recognized the importance of titanium alloy materials, have conducted research and development on them, and have been practically applied. Titanium is generally used in the aerospace industry and aviation. Titanium alloy meets the needs of high-performance flying tools with its unique qualities of lightness and hardness. The biggest charm of using titanium as the basic material in the knife industry is of course its lightness. Another advantage is that it is easy to maintain and not easy to rust. Titanium alloy has good corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C14/00C22C32/00
CPCC22C14/00C22C32/0052C23C24/103
Inventor 杜菲菲韩卫利钟军李德清阎耿旭
Owner 沈阳钛成科技合伙企业(有限合伙)
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