Quick detection method of internal defect in die-casting aluminum alloy

Abstract

The invention provides a quick detection method of an internal defect in die-casting aluminum alloy. The detection method comprises the following detection steps: S1, manufacturing a test block for internal defect detection of die-casting aluminum alloy; S2, performing impact work on the die-casting aluminum alloy test block by utilizing a metal pendulum impact testing machine; S3, performing internal defect confirmation on a fracture after the impact of the die-casting aluminum alloy test block by utilizing an image size measurer; and S4, determining whether this batch of die-casting aluminumalloy can be included according to the internal defect judgement standard of the die-casting aluminum alloy. Through the quick detection method of the internal defect in the die-casting aluminum alloy provided by the invention, the test block for die-casting aluminum alloy impact at the specific location is manufactured through detection personnel by combining the metal pendulum bob impact testing machine without adopting dedicated detection equipment and analysis software for the internal defect of the metal material; the destructive breaking at the specific location of the die-casting aluminum alloy is realized by utilizing an impact job function of the impact testing machine, the fracture analysis on the die-casting aluminum alloy is performed with the help of an image size measurer, thereby realizing the quick detection of the internal defect.

Description

technical field [0001] The invention relates to the technical field of industrial detection, in particular to a method for detecting internal defects of a die-casting aluminum alloy by using an impact testing machine and fracture analysis. Background technique [0002] In the existing industrial testing field, there are two ways to detect the internal defects of die-casting aluminum alloys. One is to use special non-destructive testing equipment. Although the operation is convenient and fast, it requires high operating and analysis skills for operators, and they must have corresponding qualifications. The second is to use destructive testing methods to destroy the existing defective parts and prepare samples, and then use general testing equipment and analysis software such as metallographic microscopes and scanning electron microscopes to analyze the defects of the damaged fractures . The inspection cycle is long and requires high professional skills of the analysts. It is...

AI Technical Summary

Problems solved by technology

[0002] In the existing industrial testing field, there are two ways to detect the internal defects of die-casting aluminum alloys. One is to use special non-destructive testing equipment. Although the operation is convenient and fast, it requires high operating and analysis skills for operators, and they must have corresponding qualifications. The second is to use destructive testing methods to destroy the existing defective parts and prepare samples, and then use general testing equipment and analysis software such as metallographic microscopes and scanning electron microscopes to analyze the defects of the damaged fractures

The inspection period is long and requires high professional skills of the analysts. It is suitable for the investigation and analysis of quality problems of parts with complex shapes and materials, but not suitable for the incoming inspection of specific positions of parts with simple shapes and single materials.

[0003] The disadvantages of the existing technology are: non-destructive testing equipment generally has poor versatility, is highly restricted by materials and defect types, and non-destructive testing equipment has requirements for personnel's operating qualifications, and requires regular professional maintenance and calibration, management High cost; general testing equipment such as metallographic microscopes and scanning electron microscopes need to prepare specific samples and select appropriate analysis software based on materials and defect types, which requires high operating skills and professional analysis capabilities of testing personnel, and the testing cycle is long. Not applicable to express incoming inspection of components

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