Method for testing conductivity correction coefficients of 7-series aluminum alloys with different curvature radii

A technology of curvature radius and correction coefficient, which is used in the field of testing the conductivity correction coefficient of different curvature radii.

Inactive Publication Date: 2019-03-08
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to solve the current domestic aluminum alloy conductivity test standard GB / T12966-2008 "Eddy Current Test Method for Aluminum Alloy Conductivity", which only stipulates the correction coefficient for the 2.067-type eddy current conductivity meter when testing curved surface materials. The 2.069-type conductivity meter is currently There is no relevant data accumulation, and it is impossible to obtain the correction coefficient of the conductivity value of the curved surface material. When it is applied to the actual production inspection, the quality of the product inspection cannot be guaranteed, and it is easy to cause quality objections. However, a 7-series aluminum alloy with different curvature radii is provided. Test method for conductivity correction factor

Method used

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  • Method for testing conductivity correction coefficients of 7-series aluminum alloys with different curvature radii
  • Method for testing conductivity correction coefficients of 7-series aluminum alloys with different curvature radii
  • Method for testing conductivity correction coefficients of 7-series aluminum alloys with different curvature radii

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specific Embodiment approach 1

[0020] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment in detail. This embodiment is a test method for the correction coefficient of conductivity of different radii of curvature of 7 series aluminum alloys, which is completed according to the following steps:

[0021] 1. Selection of sample material:

[0022] Select a 7-series aluminum alloy round ingot, and obtain a round bar after equalizing, surface turning, heating, extrusion, quenching and sawing;

[0023] 2. Production of samples with different curvature radii:

[0024] Machining the circular rods prepared in step 1, forming circular steps with different diameters on the circular rods, and the diameters increase sequentially from top to bottom, and then processing one on each of the curved surfaces of circular steps with different diameters plane, and the length of the processing plane is greater than or equal to 20mm, the width of the processing plane is the same as the heigh...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the diameter of the round rod described in step 1 is 160 mm, and the length is 200 mm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the length of the processing plane in step 2 is 20 mm, and the width of the processing plane is 20 mm. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for testing conductivity correction coefficients of 7-series aluminum alloys with different curvature radii, and relates to a method for testing conductivity correction coefficients with different curvature radii. The method aims to solve the problems that The Method for Determining Aluminum Alloys Conductivity Using Eddy Current in the current domestic aluminum alloy conductivity test standard GB / T 12966-2008 only specifies correction coefficients when testing a curved surface material for a 2.067-type eddy electric conductivity meter, the 2.069-type electricconductivity meter has no relevant data accumulation at present, the correction coefficient of the conductivity value of the curved surface material cannot be obtained, so that the product inspectionquality cannot be guaranteed when the method is applied to actual production detection, and the quality objection is easy to occur. The method includes the following steps: I. selecting sample materials; II. preparing samples with different curvature radii; III. testing equipment; IV. testing the conductivity; V. summarizing. The method is mainly used for testing the conductivity correction coefficients of the 7-series aluminum alloys with different curvature radii.

Description

technical field [0001] The invention relates to a testing method for conductivity correction coefficients with different curvature radii. Background technique [0002] With the rapid development of aviation and aerospace manufacturing, the demand for aluminum alloy products is increasing day by day. Most aerospace aluminum alloy products need to be tested for electrical conductivity. The instrument for testing conductivity has been phased out from the Sigmatast2.067 pointer eddy current conductivity meter thirty years ago and updated to 2.068, 2.069 digital eddy current conductivity meter, but now the domestic aluminum alloy conductivity test standard GB / T12966-2008 The "Eddy Current Test Method for Aluminum Alloy Conductivity" only stipulates the correction coefficient for the 2.067-type eddy-current conductivity meter when testing curved surface materials. There is no relevant data accumulation for the 2.069-type conductivity meter so far, and the correction coefficient fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
CPCG01N27/041
Inventor 陈丽君霍庆利刘超李德贵包金王红玉马振波
Owner NORTHEAST LIGHT ALLOY CO LTD
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