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A kind of preparation method of tialsin superhard gradient coating

A gradient coating and vacuum technology, applied in the field of materials science, can solve problems such as unmet requirements and poor tool service life, and achieve the effect of improving service life, excellent mechanical properties, and excellent high temperature oxidation resistance.

Active Publication Date: 2017-01-18
马鞍山精耕新材料科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing a TiAlSiN superhard gradient coating, which solves the problem of metal processing tools in the prior art. Due to poor hardness and high temperature stability, the service life of the tool cannot meet the technical problems

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  • A kind of preparation method of tialsin superhard gradient coating
  • A kind of preparation method of tialsin superhard gradient coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of a kind of TiAlSiN superhard gradient coating of the present invention comprises the following steps:

[0027] (1) Sandblasting and cleaning the surface of the workpiece

[0028]Put the substrate in the sandblasting equipment, turn on the equipment to perform sandblasting on the surface of the workpiece, and remove the scale, dirt, corrosion and impurities on the surface. After sandblasting, take out the workpiece, and then use alcohol to manually clean the surface of the workpiece to remove residual substances such as oil on the surface. After the manual cleaning is completed, the workpiece is clamped and sent to an ultrasonic cleaning machine for automatic cleaning by ultrasonic waves. After the ultrasonic cleaning is completed and the workpiece is dried, the workpiece is clamped and sent into the preheated coating furnace chamber, and the program is started. After the furnace chamber is evacuated and the substrate temperature reaches 400-500...

Embodiment 2

[0042] Example 2 High temperature resistance experiment of TiAlSiN

[0043] Select 5 groups of high-speed steel (brand M2) samples, 5 pieces in each group (each piece specification Φ20×5), polish one side of the sample, and after cleaning the whole sample, apply TiAlSiN coating according to the above process, one side of the coating The thickness is 3 microns. Put the prepared coating samples into the heating furnace in groups, set the temperature of the heating furnace to 600°C, 800°C, 1000°C, 1200°C and 1400°C respectively, and then cut the samples with slow wire walking , Observe the cross-section of the coating part under the scanning electron microscope, and the results are shown in Table 1.

[0044] Table 1 SEM observation results of high temperature experiment

[0045]

Embodiment 3

[0046] Example 3 High hardness cutting experiment of TiAlSiN coating

[0047] Tool: Carbide ball end milling cutter, Φ10mm;

[0048] Processed material: Japanese Daido mold steel DC53, hardness HRC60;

[0049] Cutting parameter: v=320m / min;

[0050] f=0.2mm / r;

[0051] a p =0.3mm;

[0052] VB=0.12mm;

[0053] Cooling method: dry cutting;

[0054] Reference coating: Swiss commercial coating;

[0055] In this embodiment, a cemented carbide ball end milling cutter is selected, and a high-hardness milling test is carried out through a TiAlSiN coating. At present, there is a Swiss company on the market that specializes in the preparation of high-hardness cutting coatings for milling cutters. For comparison, the coating produced by this Swiss company is specially selected for comparison with the TiAlSiN coating. The coating produced by the Swiss company is named "Swiss commodity coating". Experimental results such as figure 1 shown. It can be seen from the experimental re...

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Abstract

The invention provides a method for manufacturing a TiAlSiN super-hard gradient coating. The method includes the steps that abrasive blasting and cleaning are carried out on the surface of a workpiece; the step of plating the TiAlSiN super-hard gradient coating on the workpiece through a cathode ion plating process includes the first stage of manufacturing a Ti prime coating, the second stage of manufacturing a TiN gradient coating, the third stage of manufacturing a TiAl gradient coating, the fourth stage of manufacturing a TiAlN gradient coating, the fifth stage of manufacturing a SiN gradient coating and the sixth stage of manufacturing a TiSi gradient coating; finally, the surfaces of the coatings are polished. The elasticity modulus of the TiAlSiN gradient coating manufactured through the method can reach 340 GPa, high-temperature-resistant oxidation temperature can reach 1200 DEG C, high-speed cutting of quenched steel and other workpieces with the hardness over HRC60 can be achieved, and the service life of a cutter is greatly prolonged.

Description

technical field [0001] The invention belongs to the field of materials science, and relates to a surface modification technology of a metal cutting tool, in particular to a preparation method of a TiAlSiN superhard gradient coating with superhardness, high temperature resistance and oxidation resistance. Background technique [0002] Physical Vapor Deposition (Physical Vapor Deposition, PVD) is a physical method under vacuum conditions to vaporize the surface of solid or liquid materials into gaseous atoms, molecules or parts into ions, and through a low-pressure gas (or plasma) process, The technology of depositing a thin film with a certain special function on the surface of the substrate, including vacuum evaporation, sputtering and ion plating. Cathode ion plating has the advantages of evaporation and sputtering, so it is more and more widely used in the preparation of high hardness coatings. Traditional binary coatings and ternary coatings such as CrN, TiC, (Ti, Al) N,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/32C23C14/06C23C14/54
Inventor 张而耕陈强
Owner 马鞍山精耕新材料科技有限公司
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