Composite Strengthening Method for Large-area Flat Coatings

A large-area, flat technology, applied in the field of large-area flat coating composite strengthening, can solve the problems of insufficient coating film/base bonding force, weak film/base bonding force, poor mechanical properties of components, etc., to improve hardness, increase The effect of interfacial adhesion, fatigue strength and wear and corrosion resistance

Active Publication Date: 2021-08-17
QILU UNIV OF TECH
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both electroless plating technology and physical vapor deposition technology have the following disadvantages: first, the film / substrate bonding force is weak, and the film layer is prone to fall off, resulting in component failure; second, the surface roughness after coating is high, and there are Residual tensile stress, resulting in poor mechanical properties of components and short service life
However, the above method is to strengthen the final forming surface after the coating process by using plastic strengthening processes such as ultrasonic rolling to improve surface roughness and residual stress distribution. However, there is still the problem of insufficient coating film / base bonding force. However, the post-strengthening treatment under the condition of insufficient film / substrate bonding force is often prone to the problem of film layer sliding or microscopic cracks.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite Strengthening Method for Large-area Flat Coatings
  • Composite Strengthening Method for Large-area Flat Coatings
  • Composite Strengthening Method for Large-area Flat Coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The composite strengthening method of large-area flat coating comprises the following steps:

[0048] S1. Ultrasonic vibration assisted peripheral milling (suitable for large-sized workpieces)

[0049] as attached figure 1 , 2 As shown, the workpiece 1 is fixed and clamped on the milling machine table; the peripheral milling cutter 2 rotates around the main shaft, and at the same time makes a feed motion along the horizontal direction, and makes a small reciprocating vibration with a fixed frequency along the feed direction, forming a as attached image 3 The shown regular distribution of micron-sized furrow-shaped 3D microstructures.

[0050] Set the process parameters as follows:

[0051] Spindle rotation speed: 5000r / min;

[0052] Milling cutter helix angle: 25°;

[0053] Circumferential milling cutter feed speed: 40mm / min;

[0054] Ultrasonic vibration amplitude: 7 microns;

[0055] Ultrasonic vibration frequency: 20KHz.

[0056] In the obtained three-dimen...

Embodiment 2

[0070] as attached Figure 5 As shown, in step S1, the workpiece 1 is clamped on the worktable of the milling machine and follows the worktable along the feeding direction of the circumferential milling cutter 2 to make a small reciprocating vibration with a fixed frequency; the circumferential milling cutter 2 rotates around the main shaft and simultaneously Do feed movement, form specific regular distribution of nano-scale micro-geometric topography on the processing surface (suitable for small-sized workpieces).

[0071] Steps S2, S3, and S4 are the same as those in Embodiment 1.

experiment example 1

[0077] Sample 1: the workpiece processed by milling in step S1.

[0078] Sample 2: The workpiece processed by ordinary circumferential milling.

[0079] The roughness of the sample surface was measured, and the results were as follows: Figure 6 shown. It can be seen that at the same feed rate, the roughness of ultrasonic vibration milled parts is much lower than that of ordinary milled parts.

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 large-area flat coating composite strengthening method, which belongs to the field of metal material surface processing. The composite strengthening method includes: S1. using an ultrasonic vibration-assisted circumferential milling process to form regularly distributed micron / nano-level furrow-shaped three-dimensional microstructures on the workpiece surface; S2. surface coating; S3. using an ultrasonic rolling process to The coated surface is mechanically strengthened. Compared with the prior art, the large-area flat coating composite strengthening method of the present invention can greatly improve the bonding strength of the bonding interface between the base material and the coating layer, and at the same time improve the hardness, fatigue strength and wear resistance and corrosion resistance of the final formed surface. It is a comprehensive and effective surface treatment method for planar high-strength engineering components, and has good popularization and application value.

Description

technical field [0001] The invention relates to the field of surface processing of metal materials, and specifically provides a composite strengthening method for a large-area plane coating. Background technique [0002] In order to improve the tribological properties of the workpiece, improve its anti-corrosion performance, or improve its construction process, surface treatment of metal workpieces has become a routine treatment method, and surface coating is one of the most common methods. The commonly used coating method Such as electroplating, chemical plating, laser cladding, ion-assisted coating, cold spraying, thermal spraying, chemical vapor spraying, physical vapor spraying, physical vapor deposition, etc. [0003] The electroless plating technology is a plating method that reduces the metal ions in the plating solution to metal and deposits them on the surface of the part with the help of a suitable reducing agent without an external current. Compared with electrop...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23P9/02
CPCB23P9/02B23P15/00
Inventor 沈学会张常胜
Owner QILU UNIV OF TECH
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