Method for measuring depth of alloy steel decarbonized layer

A measurement method and technology of decarburization layer, applied in measurement devices, instruments, using wave/particle radiation, etc., can solve the problems of high accuracy, difficult detection, and large detection range of direct reading spectrometers, and achieve accurate analysis and simple operation. , the effect of large application value

Inactive Publication Date: 2011-10-19
HARBIN
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metallographic method is intuitive and simple, but human error is large; the microhardness method has high accuracy, but the control of the depth of the decarburization layer is too strict; the chemical method (c

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

Embodiment 1

[0033] Determination of decarburization layer depth on the inner surface of 15CDV6φ40×1, R980 steel pipe

[0034] 1. Sample cutting: In this embodiment, the vertical material surface of the 15CDV6φ40×1 steel pipe is cut into a square sample, the sample size is 10×10mm, and the thickness of the entire wall is thick, so that the surface of the test sample is perpendicular to the cross section, which is convenient for scanning Measure and analyze, and preserve the original inner surface of the material;

[0035] 2. Prepare the test piece: inlay the cut sample, inlay the sample thoroughly and ensure that the inlaid sample is vertically inlaid with the mold of the machine, prepare and polish the metallographic sample on the surface of the test side, and use the polished test surface Etching with nitric acid alcohol solution, it is better to show the microstructure more clearly.

[0036] 3. Clean the sample: soak the sample in absolute alcohol for 1 minute, take it out, remove the ...

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 physico-chemical test technology, and relates to a method for measuring depth of an alloy steel decarbonized layer. In the invention, the method for measuring the depth of the alloy steel decarbonized layer is characterized in that an image signal output terminal of a scanning electron microscope is connected with an input terminal of an X-ray energy spectrometer, the scanning electron microscope is used for measurement and analysis; and the X-ray energy spectrometer is used for analysis and verification. The method comprises the following steps of firstly cutting a sample; carrying out surface treatment on the sample; cleaning the sample; subsequently placing the sample in the scanning electron microscope and vacuuming the scanning electron microscope; adjusting parameters of the scanning electron microscope and carrying out organization form analysis; subsequently collecting images to carrying out energy spectrum analysis at two sides of a measuring point at a half position of a transition area; verifying a carbon ingredient; and finally completing the measurement on the depth of the decarbonized layer. The method can carry out exact analysis on the depth of the alloy steel decarbonized layer, can be operated simply and conveniently, and can meet the requirement of practical scientific research production and failure analysis.

Description

technical field [0001] The invention belongs to physical and chemical testing technology, and relates to a method for measuring the depth of decarburization layer of alloy steel. Background technique [0002] In the detection process of alloy steel decarburization layer depth, GB / 224 and ISO3887 standards are mainly implemented. The standard only stipulates the general measurement method of decarburization layer, metallographic method, microhardness method, chemical method (chemical analysis and spectral analysis) . The metallographic method is intuitive and simple, but human error is large; the microhardness method has high accuracy, but the control of the depth of the decarburization layer is too strict; the chemical method (chemical analysis and spectral analysis) is theoretically feasible, but poor in operability and difficult to detect. The direct reading spectrometer has a large detection range and cannot achieve fixed-point detection. Contents of the invention [...

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): G01B15/00
Inventor 陈国权张鸿霞马飞亚金光慧
Owner HARBIN
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