Residual stress detection method for aluminum product

A residual stress and detection method technology, applied in force/torque/work measuring instruments, measuring devices, analysis materials, etc., can solve the problems of many interference factors and low data reliability, reduce the influence of external factors and improve detection The effect of improving reliability and efficiency

Inactive Publication Date: 2020-04-21
ANHUI GAODE ALUMINUM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing residual stress is achieved in an open environment, there are many interference factors, and the data reliability is not high, so a residual stress detection method for aluminum products is now proposed

Method used

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  • Residual stress detection method for aluminum product

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0023] refer to figure 1 , a method for detecting residual stress of aluminum products, comprising the following steps:

[0024] S1: Cut the sample, cut and sample at both ends and the middle part of the tested sample;

[0025] S2: Appearance inspection of the sample. When in use, the laser level detection device detects the level of the sample, and at the same time records the weight of the sample separately;

[0026] S3: Sample number, different samples are numbered differently and stored in the same location;

[0027] S4: Ultrasonic testing, place the sample to be tested together with the ultrasonic testing equipment in a vacuum box, and perform residual stress ...

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Abstract

The invention discloses a residual stress detection method for an aluminum product. The method comprises the following steps: cutting samples; respectively cutting and sampling the two ends and the middle part of tested samples wafer; carrying out sample appearance inspection; during use, carrying out horizontal detection on the samples by a laser horizontal detection device; meanwhile, respectively weighing and recording the samples; numbering the samples, differentially numbering different samples, storing the samples at the same position; carrying out ultrasonic detection, putting the sample to be detected and ultrasonic detection equipment into a vacuum box; carrying out residual stress detection and surface treatment on the samples by virtue of an ultrasonic part detector, and washingand cleaning the surfaces of the samples by using purified water. The chemical detection efficiency can be improved, the reliability of a chemical detection result is improved; meanwhile, vacuum detection is matched, influences of external factors are reduced, the data reliability is improved, the detection cost is saved; and the detection reliability is improved, and production and machining ofaluminum materials are more convenient.

Description

technical field [0001] The invention relates to the technical field of residual stress detection, in particular to a method for detecting residual stress of aluminum products. Background technique [0002] Residual stress refers to the self-balanced internal stress that remains in the object after eliminating the effects of external force or uneven temperature field. Mechanical processing and strengthening processes can cause residual stress, such as cold drawing, bending, cutting, rolling, etc. Pressing, shot peening, casting, forging, welding and metal heat treatment, etc., may cause residual stress due to uneven plastic deformation or phase transformation. Residual stress is generally harmful, such as parts after improper heat treatment, welding or cutting. Residual stress can cause parts to warp or distort, or even crack, or cracks will appear on the surface after quenching and grinding. When the superposition of stress makes the total stress exceed the strength limit, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00G01N29/04
CPCG01L5/0047G01N29/04G01N2291/0234
Inventor 黄锡新
Owner ANHUI GAODE ALUMINUM
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