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

Sample preparation method for hot-rolled strip steel oxide scale EBSD analysis

A technology for hot-rolled strip steel and iron oxide scale, applied in the field of steel rolling, can solve the problems of difficult sample preparation and detection, high cost, etc., and achieves the effects of high universality, low cost, and poor electrical conductivity

Pending Publication Date: 2022-01-21
NORTHEASTERN UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this processing method is costly and difficult to carry out large-scale sample preparation and testing

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
  • Sample preparation method for hot-rolled strip steel oxide scale EBSD analysis
  • Sample preparation method for hot-rolled strip steel oxide scale EBSD analysis
  • Sample preparation method for hot-rolled strip steel oxide scale EBSD analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of sample preparation method of EBSD analysis of hot-rolled steel strip scale, carries out according to the following operation steps:

[0030] Step 1: Use SPHC hot-rolled strip steel, and use a wire cutting machine to cut out a test sample with a size of 10*8*2mm. After cutting, use ultrasonic waves to clean in absolute ethanol for 10 minutes;

[0031] Step 2: If figure 1 , the sample is fixed with a metal fixture and placed in a corundum mold, the tin block is melted in a crucible, and slowly poured into the mold after it is in a molten state, as figure 2 As shown; the amount of pouring of molten tin liquid completely covers the sample; after the mold is naturally cooled to room temperature, it is demolded to obtain a cast sample;

[0032] Step 3: For cast samples, follow image 3 Use 1000, 1200, 1500# sandpaper to perform unidirectional grinding along the direction of the scale, and then use a polishing machine to mechanically polish the sample. The partic...

Embodiment 2

[0043] A sample preparation detection method for hot-rolled strip steel oxide scale EBSD analysis is carried out according to the following steps:

[0044] Step 1: Use Q235 hot-rolled steel strip, and use a wire cutting machine to cut out a test sample with a size of 8*8*2mm. After cutting, use ultrasonic waves to clean in absolute ethanol for 10 minutes;

[0045]Step 2: Fix the cleaned sample with a metal fixture and place it in the corundum mold, put the tin block into the crucible to melt, and slowly pour it into the mold and cover the sample after it is in a molten state; wait for the mold to naturally After cooling to room temperature, demoulding is carried out to obtain a cast sample;

[0046] Step 3: Use 1200 and 1500# sandpaper in sequence to grind the cast sample in one direction along the scale direction, and then use a polishing machine to mechanically polish the sample. The particle size of the diamond polishing paste is selected to be 1.5 μm, mechanically polishe...

Embodiment 3

[0050] A sample preparation detection method for hot-rolled strip steel oxide scale EBSD analysis is carried out according to the following steps:

[0051] Step 1: Use Q235 hot-rolled steel strip, and use a wire cutting machine to cut out a test sample with a size of 8*6*3mm. After cutting, use ultrasonic waves to clean in absolute ethanol for 12 minutes;

[0052] Step 2: Fix the cleaned sample with a metal fixture and place it in the corundum mold, put the tin block into the crucible to melt, and slowly pour it into the mold and cover the sample after it is in a molten state; wait for the mold to naturally After cooling to room temperature, demoulding is carried out to obtain a cast sample;

[0053] Step 3: Use 1200 and 1500# sandpaper in sequence to grind the cast sample in one direction along the scale direction, and then use a polishing machine to mechanically polish the sample. The particle size of the diamond polishing paste is 2.5 μm, mechanically polished for 60 minut...

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 sample preparation method for hot-rolled strip steel oxide scale EBSD analysis, and belongs to the technical field of steel rolling. According to the sample preparation method for the hot-rolled strip steel oxide scale EBSD analysis, an oxide scale sample is subjected to hot inlaying packaging by utilizing the physical characteristic that tin liquid is low in melting point, and then further mechanical polishing and vibration polishing machining are carried out; and finally, an SEM and an attached EBSD assembly are used for detection. The method provides a technical basis for high-quality detection of the oxide scale sample. Compared with a traditional sample preparation mode, the method has the advantages that through a molten metal tin liquid pouring mode, oxide skin is protected from being damaged in the polishing process, and meanwhile the problem that the conductivity of an oxide skin inlaid sample is poor is solved; and compared with a focused ion beam processing mode, the cost is lower, and batch processing of the samples can be realized. And high-end equipment is not needed in sample treatment, so that the method has higher universality.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, and in particular relates to an EBSD analysis sample preparation and detection method for hot-rolled strip steel oxide scale. Background technique [0002] Electron Backscatter Diffraction (EBSD) technology is one of the important characterization methods in material science research, and has been widely used in various fields of material research, such as crystallographic orientation, recrystallization nucleation and growth mechanism, texture, phase transition and its Orientation relationship, interface structure characteristics, crystal defect density, orientation and texture inside the adiabatic shear band, etc., are crucial for researchers to deeply understand the material preparation process and the essential relationship between microstructure and performance. [0003] When performing EBSD analysis, the detection surface needs to be fresh, clean, flat, free of stress introduced by sam...

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): G01N23/20008
CPCG01N23/20008
Inventor 刘振宇王皓曹光明高欣宇单文超潘帅王晨阳姜禹辰
Owner NORTHEASTERN UNIV
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