Method for quick testing data of pole figure for deep drawn sheet plate made from aluminium alloy

A technology of deep drawing and aluminum alloy, which is applied in the field of X-ray inspection and can solve the problems of unsuitable detection of stamping aluminum plate

Inactive Publication Date: 2004-10-27
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

However, the {111} surface texture of the deep-drawn steel plate is mainly parallel to the rolled surface, and the selection principle of t...

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  • Method for quick testing data of pole figure for deep drawn sheet plate made from aluminium alloy
  • Method for quick testing data of pole figure for deep drawn sheet plate made from aluminium alloy
  • Method for quick testing data of pole figure for deep drawn sheet plate made from aluminium alloy

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Embodiment Construction

[0013] Use separately figure 1 with figure 2 The method and area shown, the data of two pole figures of {111} and {200} of the domestic deep-drawn aluminum alloy sheet were tested. Its measurement range is: χ angle is π / 6~π / 3, measured in a continuous manner;  angle measurement span is π / 2, and the value interval is π / 36. Then the corresponding orientation distribution function is calculated by conventional series expansion method. The result is as image 3 , Figure 4 shown. Depend on Figure 4 It can be seen that in the pole figure detected by this method, the density values ​​greater than 3.0 are detected at the upper and lower ends of the pole figure and the places not far from the upper and lower ends of the pole figure center; low density value. This is the same as image 3 As shown, the density distribution on the polar figure detected by the traditional method is basically consistent, which shows that the method has high precision and is suitable for industri...

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Abstract

Aluminous index of crystal face in face centered cubic structure includes nine different pole figures: {111}, {200}, {220}, {311}, {222}, {400}, {331}, {420} and {422}. 2-4 crystal faces selected from the said nine different pole figures are as pole figures to be tested. In 2D detection system of X ray measuring each data of pole figure is carrying out at same time under Chi angle Pi/6-Pi/3 and Phi angle Pi/2. Based on their tested data, it is guaranteed that calculated precision of orientation distribution function and inverse computed integrated pole figure are accordant between invented method and traditional algorithm. But, measuring time in the invented method is only 1%-2% of time needed by traditional algorithm. Thus, the invented method can realize measuring in real time under precision.

Description

Technical field: [0001] The invention belongs to the technical field of X-ray detection. Background technique: [0002] Aluminum alloy sheet is widely used in the production of rigid beverage can materials in industry. During its processing and manufacturing, the sheet is subjected to deep drawing and stretching deformation. Therefore, the technical performance, consistency and stability of aluminum alloy sheet are extremely strict. However, the aluminum alloy sheet often produces an ear effect during processing, which is very harmful to the highly automated continuous stamping of the tank body, greatly reducing production efficiency and economic benefits. People have discovered the intrinsic connection between earing and texture a long time ago. For example, rolling texture will cause earing in 45° direction, and cubic texture will cause earring in 0° or 90° direction. A variety of methods are known to eliminate the ear effect, among which the more reasonable method is to ...

Claims

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Application Information

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IPC IPC(8): G01N23/00G01N23/20
Inventor 陈冷毛卫民冯惠平
Owner UNIV OF SCI & TECH BEIJING
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