Method for quickly analyzing punching crack defects of ultra-deep drawing steel plate

A rapid analysis and ultra-deep drawing technology, applied in material inspection products, testing metals, etc., can solve problems such as deviation of results, and achieve the effect of fast inspection speed, high efficiency and less time-consuming

Active Publication Date: 2018-08-28
ANGANG STEEL CO LTD
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  • Abstract
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Problems solved by technology

At the same time, due to the uncertainty in the selection of mechanical properties and metallographic sampling points, the analysis results may sometimes have certain deviations

Method used

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  • Method for quickly analyzing punching crack defects of ultra-deep drawing steel plate
  • Method for quickly analyzing punching crack defects of ultra-deep drawing steel plate
  • Method for quickly analyzing punching crack defects of ultra-deep drawing steel plate

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings, but it should be pointed out that the implementation of the present invention is not limited to the following embodiments.

[0036] The method for quickly analyzing the cracking defects of ultra-deep-drawn steel plates is to divide the cut steel plates for forming into N fan-shaped areas with the center point of the steel plate as the center of the circle, and divide the center line of each fan-shaped area into M equal parts. Measure the hardness value at each equal point, then calculate the hardness extreme value deviation and influence factor, and finally judge whether the steel plate has the possibility of punching cracks or ear defects; N and M are integers, and the value range of N is 6 to 12 , and the value range of M is 2-5.

[0037] When testing the hardness value of each equal point, when the thickness of the steel plate is ≥ 2.5mm, the hardness test uses the ...

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Abstract

The invention relates to a method for quickly analyzing punching crack defects of an ultra-deep drawing steel plate. The method comprises the following steps: taking the center point of a steel platecut for forming as the center of a circle, dividing into N fan-shaped regions uniformly, equally dividing the center line of each fan-shaped region into M parts, measuring the hardness value of each equipartition point at each equipartition point, then calculating hardness extreme deviation and influence factors, finally judging the possibility of punching crack defects or ear-making defects in the steel plate; both N and M are integers. The method for quickly analyzing the punching crack defects of the ultra-deep drawing steel plate has the advantages that the strength of the steel plate canbe indirectly evaluated through detecting the hardness and the hardness detection is high in speed and less in time consumption, furthermore, the hardness detection of each point for the steel plate is performed and the 'microscopic' strength of each point is indirectly tested, so that the anisotropy trend of the formed steel plate is quickly tested, thereby saving time, being high in efficiency,and further saving resources.

Description

technical field [0001] The invention relates to a method for rapidly analyzing punching crack defects of ultra-deep drawn steel plates. Background technique [0002] With the continuous expansion of the application field of deep-drawn steel plates, industries such as compressor shells, enamel products, automobiles, and food packaging are gradually increasing the application proportion of deep-drawn steel plates. [0003] Deep-drawn steel sheets require good surface quality and deep-drawing properties during the stamping process, especially for ultra-deep-drawn steel sheets. Defects such as punching cracks or earing often occur during the stamping process. How to analyze and judge the performance of formed steel sheets As well as the potential possibility of cracking during stamping and forming, it has very important practical significance. [0004] At present, when deep-drawn steel plates have punching cracks and ear defects during the stamping process, the usual analysis m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/20
CPCG01N33/20
Inventor 徐承明王永明丁燕勇黄秋菊吕家舜陈义庆苏皓璐满彦臣
Owner ANGANG STEEL CO LTD
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