Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for testing bonding force and wear resistance of surface plating layer of aluminum-based composite material

A technology of aluminum-based composite materials and testing methods, which is applied in the directions of testing wear resistance, analyzing materials, and measuring devices. It can solve the problems of inability to truly reflect the bonding force of the coating, failure of the coating, and preferential peeling off of the coating, so as to ensure effective evaluation, The effect of reliable results and reducing incompleteness

Inactive Publication Date: 2018-07-10
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though the scratch method evaluates the coating's high bonding strength, during the service process of the coating, the coating at the corners of the parts will still fall off preferentially, which will lead to the failure of the overall coating
Therefore, the evaluation result of the scratch method suitable for the bonding force of the coating on the flat surface cannot truly reflect the bonding force of the coating at each part of the part, especially the coating part with weak bonding force at the corner of the part.

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
  • Method for testing bonding force and wear resistance of surface plating layer of aluminum-based composite material
  • Method for testing bonding force and wear resistance of surface plating layer of aluminum-based composite material
  • Method for testing bonding force and wear resistance of surface plating layer of aluminum-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Prepare aluminum-based composite coating parts: 40 pieces of sheet parts, size 15mm×30mm×3.5mm, wear-resistant coating thickness 10-30um, 20 pieces for each of the two coating processes, corresponding to coating process 1 and coating process 2. Accurately measure the weight of parts.

[0022] 2. In the drum with an inclination angle of 5°, fill the oblique triangle brown corundum abrasive with a particle size of 10mm, the abrasive occupies 80% of the inner volume of the drum, and at the same time fill with a lubricating slurry, set the rotation speed to 180 rpm / min, the rotation time is 1h. After the rotation, the parts are taken out, cleaned and dried, the weight of the parts is measured, and the weight changes of the parts before and after the test are calculated, which are used as the wear resistance index of the coating in turn; observe the damage of the coating at the corners of the part under a 100X optical microscope to evaluate the coating bonding force. Tabl...

Embodiment 2

[0024] 1. Prepare aluminum-based composite material coating parts: 40 strip parts, size 20mm×20mm×3.5mm, and wear-resistant coating thickness 30-50um. Each of the two plating processes has 20 pieces, corresponding to plating process 1 and plating process 2. Accurately measure part thickness.

[0025] 2. In the drum with an inclination angle of 45°, fill with 10mm silicon carbide abrasive, which accounts for 95% of the internal volume of the drum, and at the same time fill with a lubricating slurry, set the speed to 5 revolutions / min, and rotate The time is 4h. After the rotation, the parts are taken out, cleaned and dried, the thickness of the parts is measured, and the thickness changes of the parts before and after the test are calculated, which in turn are used as the wear resistance index of the coating; the damage of the coating at the corners of the part is observed under a 100X optical microscope to evaluate the coating bonding force.

Embodiment 3

[0027] 1. Prepare aluminum-based composite material coating parts: 40 cylindrical parts, size Φ5mm×20mm, wear-resistant coating thickness 50-100um, 20 pieces for each of the two coating processes, corresponding to coating process 1 and coating process 2. Accurately measure the thickness and weight of parts.

[0028] 2. Put a stainless steel ball with a diameter of 5mm in the drum with an inclination angle of 30°. The stainless steel ball occupies 70% of the inner volume of the drum. At the same time, it is filled with a grinding fluid with lubricating effect. The rotation speed is set to 5 revolutions / min. The rotation time is 8h. After the rotation, the parts are taken out, cleaned and dried, and the thickness and weight of the parts are measured. The thickness and weight changes of the parts before and after the test are calculated, which are used as the wear resistance index of the coating. Observe the damage of the coating at the corners of the part under a 100X optical micro...

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 belongs to the technical field of test of the performance of the surface plating layer of an aluminum-based composite material, and particularly relates to a method for testing the bonding force and the wear resistance of the surface plating layer of an aluminum-based composite material. The specific operations comprise that a certain number of aluminum-based composite plating layerparts are loaded into a rotation drum having an abrasive material and a grinding lubricating liquid; the rotation drum obliquely rotates, such that the plating layer parts and the abrasive material are subjected to flipping, collision and friction; and after the rotating is completed, the shedding condition and the wear weightlessness data of the plating layer on the corner of the part are checkedso as to evaluate the bonding force and the wear resistance of the plating layer, wherein the axial oblique angle alpha of the rotation drum is 5-45 DEG, and the rotation speed r is 5-300 rpm / min. According to the present invention, the bonding force at various parts of the surface plating layer of the aluminum-based composite material can be effectively evaluated, and especially the plating layer part having the weak bonding force and positioned at the corner of the part can be evaluated; and by using the abrasive material during the process, the wear resistance of the plating layer can be effectively evaluated.

Description

Technical field [0001] The invention belongs to the technical field of testing the surface coating performance of aluminum-based composite materials, and specifically relates to a method for testing the bonding force and wear resistance of the surface coating of aluminum-based composite materials. Background technique [0002] In addition to the excellent properties of ordinary aluminum alloys, aluminum-based composite materials also have the characteristics of low expansion, high thermal conductivity, high modulus, high specific stiffness, and high specific strength. They are used in aviation, aerospace, electronics, energy, transportation and other fields. More widely used. Due to the particularity of its structure, the corrosion resistance of aluminum-based composites is often unsatisfactory; in the application environment of high specific strength and high specific stiffness, its surface wear resistance often cannot meet the requirements. Coating the surface with a metal-bas...

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 Applications(China)
IPC IPC(8): G01N3/56
CPCG01N3/56G01N2203/0005G01N2203/0037G01N2203/0676G01N2203/0682
Inventor 赵月红
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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
Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com