Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for detecting bonding strength of babbitt metal and matrix

A technology of babbitt alloy and bonding strength, which is applied in the detection field, can solve the problems that the bonding strength of babbitt alloy and the matrix cannot be quantitatively characterized, the strength value cannot be given, and the sample preparation steps are complicated, so as to achieve easy sample processing and easy sampling Check and analyze the effect of short cycle time

Pending Publication Date: 2021-02-05
JIANGSU UNIV OF SCI & TECH
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The soft babbitt alloy is prepared on the high-strength substrate by surfacing welding, so that it can better serve the wear resistance and impact resistance. However, if the bonding strength between the babbitt alloy and the substrate is not good, there will be babbitt alloy Therefore, it is very important to test the bonding strength between the babbitt alloy surfacing layer and the substrate
[0003] In terms of testing the bonding strength of the Babbitt alloy layer, GB / T 12948-91 specifies the destructive test method for the bimetallic bonding strength of sliding bearings. The standard stipulates that the thickness of the Babbitt alloy layer is not less than 2mm, but this standard requires higher dimensional accuracy , the sample preparation steps are relatively complicated; in addition, the Chisel test method is often used in enterprises to quickly and qualitatively analyze the bonding performance of Babbitt alloy and matrix, but it cannot quantitatively characterize the bonding strength of Babbitt alloy and matrix. Unable to give strength value as a reference

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 detecting bonding strength of babbitt metal and matrix
  • Method for detecting bonding strength of babbitt metal and matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The technical solutions of the present invention will be further described below through specific embodiments.

[0021] as attached figure 1 Shown, be the detection method of a kind of low-carbon steel surface welding babbitt alloy of the present invention and matrix bonding strength, comprise the steps:

[0022] Step 1: Under the welding currents of 50A, 70A, and 90A, respectively, adopt the arc surfacing method to surfacing the Babbitt alloy layer with a thickness of 4mm on the surface of Q235B low-carbon steel with a thickness of 6mm. The welded workpiece is processed by wire cutting to make a cuboid sample with a length × width × thickness of 10mm × 5mm × 2mm.

[0023] Three workpieces were sampled for each welding current. The components of Babbitt welding consumables and low carbon steel used are shown in Table 1 and Table 2 respectively;

[0024] Step 2: Place the sample in the fixture stably and clamp it firmly;

[0025] Step 3: Place the fixture of the asse...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a detection method for detecting the bonding strength of babbitt metal and a matrix. The method comprises the following steps of: preparing a matrix with a babbitt metal layerprepared on the surface into a shear sample, stably placing the sample in a clamp, performing firm clamping, placing the clamp with the clamped sample on a tensile testing machine platform, pressing the babbitt metal layer downwards along the direction of a surfacing bonding surface at a speed of 0.1mm / s-0.4mm / s by a pressure head until the babbitt metal layer is stripped from the matrix, and stopping pressing; and recording the maximum load and the sectional area of a fracture during stripping of the babbitt metal layer, and calculating the bonding strength value of the babbitt metal layer according to the formula W=F / S. The method can be used for quantitatively measuring the bonding strength of the babbitt metal and the matrix, overcomes the defects of large error and incapability of quantitative rating in qualitative analysis, can acquire precise and visual bonding strength data, and has the advantages of short analysis period, easy sample processing, simple operation, low detectioncost, precise data, high sensitivity and the like.

Description

technical field [0001] The invention belongs to the technical field of detection, and relates to a method for detecting the bonding strength of a surface material and a substrate, in particular to a method for detecting the bonding strength of a babbitt alloy and a substrate. Background technique [0002] Babbitt alloy is widely used in sliding bearings in various mechanical fields because of its excellent wear resistance. The soft babbitt alloy is prepared on the high-strength substrate by surfacing welding, so that it can better serve the wear resistance and impact resistance. However, if the bonding strength between the babbitt alloy and the substrate is not good, there will be babbitt alloy Therefore, it is very important to detect the bonding strength between the babbitt alloy surfacing layer and the substrate. [0003] In terms of testing the bonding strength of the Babbitt alloy layer, GB / T 12948-91 specifies the destructive test method for the bimetallic bonding str...

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): G01N19/04
CPCG01N19/04
Inventor 周方明魏通达张庆亚徐冬豪石铭霄
Owner JIANGSU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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