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

Ultrasonic flaw detection method of gear press-in section of locomotive axle

An ultrasonic and axle technology, which is applied in the analysis of solids using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, and measuring devices. It can solve problems such as no other adjustments, and achieve great practicality and feasibility. sexual effect

Inactive Publication Date: 2012-10-24
CRRC LUOYANG CO LTD
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there is no comparison test block of the same type, there is currently no other method for adjusting the sensitivity of the ultrasonic flaw detection of the gear press-fitting part of the locomotive axle

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
  • Ultrasonic flaw detection method of gear press-in section of locomotive axle
  • Ultrasonic flaw detection method of gear press-in section of locomotive axle
  • Ultrasonic flaw detection method of gear press-in section of locomotive axle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as image 3 As shown, using the comparison test blocks of DF8B (integral) and SS3B locomotive integral wheels, the ultrasonic flaw detection sensitivity of the inner and outer sides of the tested DF8B (semi-suspension) axle gear press-fitting part 4 is adjusted respectively.

[0016] (1) Place the 2.5P13×13 axis shear-wave oblique probe K1 on the wheel seat 2 of the tooth end of the DF8B (overall) comparison test block, adjust the relevant buttons and parameters of the ultrasonic flaw detector, and scan the inner side of the gear press-fitting part 4 650- 1 artificial crack, adjust the amplitude of the best reflected echo to 80% of the vertical full range, and use it as the ultrasonic flaw detection sensitivity inside the gear press-fitting part of the DF8B (semi-suspended) axle, as shown in image 3 (A) shown.

[0017] (2) Put the 2.5P13×13-axis shear-wave oblique probe K1 on the gear pressing part 4 of the SS3B (integral) type comparison test block, adjust the r...

Embodiment 2

[0019] Such as Figure 4 As shown, the ultrasonic flaw detection sensitivity at the inside and outside of the detected SS6B (whole) axle gear pressing part 4 is adjusted by using the comparison test block of the SS3B (whole) locomotive.

[0020] (1) Place the 2.5P13×13-axis shear-wave oblique probe K1 on the wheel seat 2 of the SS3B (integer) type comparison test block, adjust the relevant buttons and parameters of the ultrasonic flaw detector, and scan the inner side of the gear press-fitting part 4 640- 1 artificial crack, the best reflected echo amplitude is adjusted to 80% of the vertical full range, which is used as the ultrasonic flaw detection sensitivity inside the gear press-fitting part 4 of the SS6B (whole) axle, as shown in Figure 4 (A) shown.

[0021] (2) Place the 2.5P13×13-axis shear-wave oblique probe K1 on the gear press-fitting part 4 of the SS3B-type comparison test block, adjust the relevant buttons and parameters of the ultrasonic flaw detector, and dete...

Embodiment 3

[0023] Such as figure 2 As shown, the ultrasonic flaw detection sensitivity of the tested 8K axle gear pressing part 4 is adjusted by using the comparison test block of the SS7C locomotive.

[0024] Place the 2.5P13×13-axis shear-wave oblique probe K1 on the wheel seat 2 of the tooth end of the SS7C-type comparison test block, adjust the relevant buttons and parameters of the ultrasonic flaw detector, and scan the artificial crack 640-1 inside the gear press-fitting part 4, Adjust the highest reflected wave amplitude to 80% of the vertical full scale, which can be used as the ultrasonic flaw detection sensitivity of the gear press-fitting part 4 of the 8K axle. When the shear wave detects the axle gear seat, the detection is carried out on the wheel seat 2 and the bearing seat 3 respectively.

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 an ultrasonic flaw detection method of a gear press-in section of a locomotive axle, and relates to a method for adjusting sensitivity of ultrasonic flaw detection of the gear press-in section of a whole wheel axle by different types of reference blocks. The problem that a locomotive cannot be adjusted when the locomotive is provided with the same type of reference blocks, and the problem of the sensitivity of the gear press-in section of the whole wheel axle are mainly solved. The ultrasonic flaw detection method comprises the following steps: (1) determining maximal detection depth of transverse wave incidence once according to 1 / 2 of sum of prototype sizes of two axle diameters of the part of the detected axle provided with a probe and the gear press-in section; (2) selecting the parts with the same detection depths in the reference blocks; and (3) putting a transverse wave inclined probe for the axle on the gear press-in sections or wheel seat parts of the reference blocks, scanning a linear cutting artificial crack which is 1mm in depth at the part corresponding to the reference blocks, adjusting the optimal reflection echo amplitude to be 80% of vertical amplitude, and respectively adjusting the sensitivity of ultrasonic flaw detection at the inner side and outer side of the gear press-in section of the detected axle. According to the ultrasonic flaw detection method of the gear press-in section of the locomotive axle, the sensitivity of ultrasonic flaw detection of the gear press-in sections of whole wheel axles of various locomotives can be adjusted under the condition that the same type of reference blocks do not exist.

Description

technical field [0001] The invention relates to an ultrasonic flaw detection method used in the railway industry, in particular to adjusting the ultrasonic flaw detection sensitivity of the gear pressing part of the integral wheel axle of various locomotives by using different types of comparison test blocks, and the gear can be effectively detected during detection. Ultrasonic flaw detection method for press-fit parts of locomotive axle gears for fatigue cracks in press-fit parts. Background technique [0002] Known ultrasonic flaw detection methods commonly used in axle press-fitting parts of railway locomotives include small-angle longitudinal wave flaw detection method and shear wave incident method. Small-angle longitudinal wave flaw detection is to place the small-angle longitudinal wave probe 1 on the axle end face 5 to scan the press-fit part, such as figure 1 As shown in (A); the shear wave incidence method is to place the axial shear wave oblique probe K1 on the a...

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): G01N29/04G01N29/30
Inventor 周纲吉世剑
Owner CRRC LUOYANG CO LTD
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