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CN-116676564-B - Trimming die coating and preparation method thereof

CN116676564BCN 116676564 BCN116676564 BCN 116676564BCN-116676564-B

Abstract

The invention relates to the technical field of materials and discloses a trimming die coating and a preparation method thereof, wherein the trimming die coating comprises a substrate and at least one layer of coating, the coating comprises a first sub-coating W, a second sub-coating HT-TiCN, a third sub-coating Al 2 O 3 , a TiN coating, a TiC coating and a TiCO coating, one side of the TiC coating is deposited on one side of the first sub-coating W, one side of the second sub-coating HT-TiCN is deposited on one side of the TiN coating, one side of the TiC coating is deposited on one side of the second sub-coating HT-TiCN, one side of the TiCO coating is deposited on one side of the TiC coating, and one side of the third sub-coating Al 2 O 3 is deposited on one side of the TiCO coating.

Inventors

  • FENG LEI

Assignees

  • 常州艾恩希真空技术有限公司
  • 常州艾恩希纳米镀膜科技有限公司

Dates

Publication Date
20260508
Application Date
20230523

Claims (8)

  1. 1. A trimming die coating is characterized by comprising a substrate and at least one layer of coating; the coating comprises a first sub-coating W, tiN coating, a second sub-coating HT-TiCN, a TiC coating, a TiCO coating and a third sub-coating kappa-Al 2 O 3 which are sequentially deposited on the outer surface of the substrate.
  2. 2. The trimming die coating according to claim 1, wherein the C/N atomic ratio of HT-TiCN of the second sub-coating gradually increases from 0.25 to 4.0, and the HT-TiCN of the second sub-coating is made of high temperature titanium carbide nitride.
  3. 3. A trimming die coating as in claim 1, wherein the hardness of the first sub-coating layer W, the second sub-coating layer HT-TiCN and the third sub-coating layer kappa-Al 2 O 3 increases sequentially.
  4. 4. The trimming die coating as claimed in claim 1, wherein the total thickness of the coating is 8-18 μm.
  5. 5. The trimming die coating as claimed in claim 1, wherein the total thickness of the coating is 10-12 microns.
  6. 6. The trimming die coating according to claim 4, wherein the first sub-coating layer W has a thickness of 0.5-2 microns, the TiN coating layer has a thickness of 1-2 microns, the second sub-coating layer HT-TiCN has a thickness of 3-6 microns, the TiC coating layer has a thickness of 1-2 microns, the TiCO coating layer has a thickness of 0.5-1 micron, and the third sub-coating layer kappa-Al 2 O 3 has a thickness of 2-5 microns.
  7. 7. A trimming die coating as in claim 1, wherein the substrate is hot work die steel or high speed steel.
  8. 8. A method of producing a cut off die coating according to any one of claims 1-7, comprising the steps of: s1, preparing a first sub-coating W, wherein the preparation of the first sub-coating W is obtained by adopting a physical vapor deposition magnetron sputtering method or a chemical vapor deposition method; The physical vapor deposition magnetron sputtering method comprises the steps of performing deposition at a temperature of 400-600 ℃ and a deposition pressure of 0.01-0.1 mbar, wherein a target material is a pure W target, the power of the target material is 5-10 kw, and Ar is introduced into a furnace chamber during deposition; The chemical vapor deposition method comprises the steps of setting the deposition temperature to 900-1050 ℃, setting the deposition pressure to 50-100 mbar, and enabling the reaction gas to comprise WCl 6 and H 2 ; S2, preparing a TiN coating, and adopting a chemical vapor deposition method, wherein the deposition temperature is 900-1000 ℃, the deposition pressure is 50-200mbar, and the reaction gas comprises TiCl 4 、N 2 and H 2 ; S3, preparing a second sub-coating HT-TiCN by adopting a chemical vapor deposition method, wherein the deposition temperature is 900-1050 ℃, the deposition pressure is 50-200mbar, and the reaction gas comprises TiCl 4 、N 2 、CH 4 and H 2 ; S4, preparing a TiC coating, and adopting a chemical vapor deposition method, wherein the deposition temperature is 900-1050 ℃, the deposition pressure is 50-200mbar, and the reaction gas comprises TiCl 4 、CH 4 and H 2 ; S5, preparing a TiCO coating, and adopting a chemical vapor deposition method, wherein the deposition temperature is 900-1050 ℃, the deposition pressure is 50-200 mbar, and the reaction gas comprises TiCl 4 、CO、CH 4 and H 2 ; S6, preparing a third sub-coating kappa-Al 2 O 3 by adopting a chemical vapor deposition method, wherein the deposition temperature is 900-1050 ℃, the deposition pressure is 50-100 mbar, and the reaction gases comprise AlCl 3 、CO 2 、H 2 S and H 2 .

Description

Trimming die coating and preparation method thereof Technical Field The invention relates to the technical field of materials, in particular to a trimming die coating and a preparation method thereof. Background The hexagonal trimming die is an important tool in standard bolt production, the service performance and service life of the hexagonal trimming die directly influence the quality and production cost of a product, and the service life of the hexagonal trimming die and the quality of the product can be obviously improved by the coating. Common trimming dies are made of M2 die steel (W6 Mo5Cr4V 2), high-speed steel and the like, and hard coatings (such as TiN, tiCN, al 2O3 and the like) are directly deposited on the die steel and a high-speed steel substrate, so that the bonding force is poor, the reason is that the hardness difference between the hard coatings and the substrate is large, the component elements of the substrate and the coating materials are large, and the coherent growth is difficult to form at the interface between the substrate and the coating, and therefore, the trimming die coating and the preparation method thereof are provided. Disclosure of Invention The invention aims to provide a trimming die coating and a preparation method thereof, which are used for solving the problems that the common trimming die provided in the background technology is provided with M2 die steel (W6 Mo5Cr4V 2), high-speed steel and the like, and a hard coating (such as TiN, tiCN, al 2O3 and the like) is directly deposited on a die steel and a high-speed steel substrate, so that the bonding force is poor, the hardness difference between the hard coating and the substrate is large, the component elements of the substrate and the coating material are large, and the coherent growth is difficult to form at the interface of the substrate and the coating. In order to achieve the aim, the invention provides the technical scheme that the trimming die coating comprises a substrate and at least one layer of coating; the coating comprises a first subcoat W, a second subcoat HT-TiCN, a third subcoat Al 2O3, a TiN coating, a TiC coating and a TiCO coating, wherein one side of the TiC coating is deposited on one side of the first subcoat W, one side of the second subcoat HT-TiCN is deposited on one side of the TiN coating, one side of the TiC coating is deposited on one side of the second subcoat HT-TiCN, one side of the TiCO coating is deposited on one side of the TiC coating, and one side of the third subcoat Al 2O3 is deposited on one side of the TiCO coating. Preferably, one side of the first sub-coating W is deposited on one side of the substrate, and one side of at least one of the coatings is deposited on one side of the substrate. Preferably, the atomic ratio of C/N of the HT-TiCN of the second sub-coating gradually increases from 0.25 to 4.0, and the HT-TiCN of the second sub-coating is made of high-temperature titanium carbide nitride. Preferably, the hardness of the first sub-coating layer W, the second sub-coating layer HT-TiCN and the third sub-coating layer Al 2O3 is sequentially increased. Preferably, the third sub-coating layer Al 2O3 has a face centered cubic kappa phase structure. Preferably, the total thickness of the coating is 8-18 micrometers, and the total thickness of the coating is 10-12 micrometers. Preferably, the thickness of the first sub-coating W is 0.5-2 microns, the thickness of the TiN coating is 1-2 microns, the thickness of the second sub-coating HT-TiCN is 3-6 microns, the thickness of the TiC coating is 1-2 microns, the thickness of the TiCO coating is 0.5-1 micron, and the thickness of the third sub-coating Al 2O3 is 2-5 microns. Preferably, the substrate is hot work die steel or high speed steel. The invention also provides a preparation method of the trimming die coating, which comprises the following steps: S1, preparing a first sub-coating W, wherein the preparation of the first sub-coating W can be obtained by adopting a physical vapor deposition magnetron sputtering method or a chemical vapor deposition method; The physical vapor deposition magnetron sputtering method comprises the steps of performing deposition at a temperature of 400-600 ℃ and a deposition pressure of 0.01-0.1 mbar, wherein a target material is a pure W target, the power of the target material is 5-10 kw, and Ar is introduced into a furnace chamber during deposition; The chemical vapor deposition method comprises the steps of setting the deposition temperature to 900-1050 ℃, setting the deposition pressure to 50-100 mbar, and enabling the reaction gas to comprise WCl 6 and H 2; S2, preparing a TiN coating, and adopting a chemical vapor deposition method, wherein the deposition temperature is 900-1000 ℃, the deposition pressure is 50-200 mbar, and the reaction gas comprises TiCl 4、N4 and H 2; S3, preparing a second sub-coating HT-TiCN by adopting a chemical vapor deposition method, wherein the deposition te