Unlock instant, AI-driven research and patent intelligence for your innovation.

Measurement method for {111} crystal face in automobile plate rolling

A technology of {111} and measurement method, which is applied in the field of measurement of {111} crystal planes in automobile sheet rolling surfaces, and can solve problems such as not knowing the absolute percentage

Inactive Publication Date: 2018-03-16
武汉钢铁有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This measurement method is simple to operate, but the disadvantage is that the extreme density can only be used to compare the relative amount of a certain crystal plane between different samples, and the absolute percentage of each crystal plane in the sample in the entire rolling surface is not known. example

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

[0018] An embodiment of the present invention provides a method for measuring a {111} crystal plane in a rolled surface of an automobile sheet, comprising the following steps:

[0019] 1) Prepare a standard sample: the standard sample is Fe single crystal, and the Fe single crystal has a body-centered cubic structure with only one measurement surface {111}; the measurement surface size of the standard sample is length×width=25mm×25mm;

[0020] 2) Prepare the sample to be tested: cut the automobile plate sample so that the size of the measurement surface is consistent with the size of the standard sample, and then perform grinding and polishing. During the grinding and polishing process, it is required to The surface normal direction is uniformly thinned in different plate surface areas to obtain the sample to be tested;

[0021] 3) Measurement: put the above-mentioned prepared standard sample and the sample to be tested into the goniometer of the X-ray diffractometer, control ...

Embodiment 2

[0024] An embodiment of the present invention provides a method for measuring a {111} crystal plane in a rolled surface of an automobile sheet, comprising the following steps:

[0025] 1) Prepare a standard sample: the standard sample is Fe single crystal, and the Fe single crystal has a body-centered cubic structure with only one measurement surface {111}; the measurement surface size of the standard sample is length×width=22mm×20mm;

[0026] 2) Prepare the sample to be tested: cut the automobile plate sample so that the size of the measurement surface is consistent with the size of the standard sample, and then perform grinding and polishing. During the grinding and polishing process, it is required to The surface normal direction is uniformly thinned in different plate surface areas to obtain the sample to be tested;

[0027] 3) Measurement: put the above-mentioned prepared standard sample and the sample to be tested into the goniometer of the X-ray diffractometer, control ...

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

Belonging to the technical field of analysis methods, the invention provides a measurement method for {111} crystal face in automobile plate rolling. The method includes the steps of: 1) selecting a standard sample and a to-be-tested sample, wherein the standard sample is a single crystal of {111} crystal face; 2) controlling the same experimental conditions, under the circumstance of deducting the background, using an X-ray diffractometer to determine the diffraction peak net intensity of {222} crystal face in the standard sample and to-be-tested sample, i.e. I net sample and I net standard sample; and 3) calculating the absolute value content chi of {111} crystal face in the to-be-tested sample, wherein the chi satisfies the following mathematical relationship: chi=( I net sample / I net standard sample)*100%. The measurement method can accurately measure the absolute value content of {111} crystal face in automobile plate rolling, and provides direct basis for adjustment and improvement of automobile plate production and heat treatment process.

Description

technical field [0001] The invention relates to the texture research of iron and steel materials, belongs to the technical field of analysis methods, and in particular relates to a method for measuring {111} crystal planes in rolled surfaces of automobile plates. Background technique [0002] Texture has a direct impact on the performance of steel materials (such as silicon steel sheet, automobile sheet, etc.). For automobile sheets, deep drawing performance, plastic strain ratio (r value) and work hardening index (n value) are the most important performance indicators of automobile sheets, and the number of {111} crystal planes in the rolling surface directly affects The deep drawing performance, plastic strain ratio (r value) and work hardening index (n value) of the automobile sheet are determined, and the more {111} crystal plane content, the better the performance, otherwise the worse. Therefore, how to accurately and quantitatively measure the surface texture of the {...

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): G01N23/207
CPCG01N23/207G01N2223/056G01N2223/1016
Inventor 周顺兵孙宜强王志奋姚中海
Owner 武汉钢铁有限公司