Deplating method for carbon-based thin film on surface of metal workpiece

A technology for metal workpieces and workpiece surfaces, which is applied in the field of removing surface vapor deposition coatings to achieve the effect of avoiding corrosion damage and smoothing the surface

Active Publication Date: 2016-08-10
广州今泰科技股份有限公司 +1
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is only aimed at the rapid stripping of the carbon-based coating

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1: Decoating treatment after hot wire preparation of diamond coating on the surface of M2 steel test piece

[0028] An M2 steel test piece with a diamond coating of about 2 microns thick on the surface. The sample is black with a size of 100mmx30mmx2mm. The diamond coating is known to be prepared by the hot wire method, and the coating needs to be completely removed to obtain a smooth surface.

[0029] A method for stripping a carbon-based film on the surface of a metal workpiece includes the following steps:

[0030] 1) Put the M2 steel test piece with surface coating in an aqueous solution containing 5wt% of commercially available "Qiqiang" metal degreasing detergent, boil for about 5 minutes, rinse the test piece with clean city water and bake it Dry; Mount the M2 steel test piece with surface coating on the fixture and put it into the vacuum system.

[0031] 2) Close the door of the vacuum chamber and turn on the workpiece holder to rotate; the vacuum chamber is pum...

Example Embodiment

[0034] Example 2: Decoating treatment after preparing diamond-like carbon coating on the surface of 316L watch case

[0035] The 316L case with a diameter of 38mm is coated with a matrix / Cr / CrC / a-C:H diamond-like carbon coating, of which the surface diamond-like carbon coating is 1.2 microns, and the metal and its carbide transition layer is 1.2 microns. Due to the preparation of the coating, the coating is partially peeled off, the surface is black and gray, and occasionally there are white bright spots that can be seen by visual inspection, and it is necessary to remove the treated coating and recoat it.

[0036] A method for stripping a carbon-based film on the surface of a metal workpiece includes the following steps:

[0037] 1) Place the watch case in an aqueous solution containing 5wt% of commercially available "Qiqiang" metal degreasing detergent, boil for about 5 minutes, rinse the test piece with clean city water and dry it; hang the watch case on Put the vacuum system on ...

Example Embodiment

[0041] Example 3: Stripping treatment of Ti / TiN / AlTiN / graphite coating on the surface of H13 steel test piece

[0042] The surface of the H13 steel test piece with a size of 100mmx30mmx2mm is prepared with Cr / CrN / AlTiN / graphite coating. The thickness of the black graphite coating on the surface is 0.8 microns, and the thickness of the transition coating is 2 microns; the edges are wiped with 1500# water sandpaper. Drop to expose the substrate.

[0043] A method for stripping a carbon-based film on the surface of a metal workpiece includes the following steps:

[0044] 1) Put the test piece in an aqueous solution containing 5wt% of commercially available "Qiqiang" metal degreasing cleaner, boil for about 5 minutes, rinse the test piece with clean city water and dry it; hang the test piece on Put the vacuum system on the special fixture;

[0045] 2) Close the door of the vacuum chamber and turn on the workpiece holder to rotate; the vacuum chamber is pumped to the background and the va...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a deplating method for a carbon-based thin film on the surface of a metal workpiece. Oily pollutants on the surface of the steel-substrate workpiece are removed firstly; then the pretreated workpiece is fixed to a workpiece rack in a vacuum chamber of a vacuum coating system containing a hollow cathode ion source, a gas inlet pipeline for guiding in working gas is mounted, and oxygen plasma is obtained when oxygen is led in; and the surface of the sample is bombarded by the oxygen plasma generated by the ion source, and then the workpiece separated from the carbon-based coating is soaked in a faintly-acid soak solution and then cleanly rinsed. The carbon-based coating can be completely stripped off in the oxygen plasma bombarding process, and the stripping speed can reach 0.5-1.0 micron/h; due to oxidation protection in the carbon-based surface layer stripping process, the positions where the coating is abraded or stripped are protected, and excessive etching of the positions cannot be caused by the proper oxygen ion density and energy.

Description

technical field [0001] The invention relates to a stripping method, in particular to a treatment method for completely stripping the coatings after depositing diamond-like, diamond and graphite-based coatings on the metal surface, and is a method for stripping the surface vapor deposition coatings. Background technique [0002] Because carbon-based materials have extremely low friction coefficients, high thermal conductivity, and diamond coatings and diamond-like coatings also have high hardness, they are widely used in the surface coating of key basic elements (cutting tools, molds) in the advanced manufacturing field. layer, to improve the service life of the tool and mold and the efficiency of processing and manufacturing, and to increase the technical added value of the tool and mold. The carbon-based coating on the surface of the workpiece needs to be removed in the following two cases: 1) The quality of the coating is unqualified during the coating preparation process;...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23G5/00C23G1/18C23G1/02
CPCC23G1/02C23G1/18C23G5/00
Inventor 彭继华苏东艺谭笛
Owner 广州今泰科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap