Rapid detection method for internal defects of die-casting aluminum alloy

Abstract

The invention provides a method for quickly detecting internal defects of die-casting aluminum alloys, comprising the following detection steps: S1, making a test block for detecting internal defects of die-casting aluminum alloys; S2, using a metal pendulum impact testing machine to perform impact operations on the die-casting aluminum alloy test blocks ; S3. Use the image size measuring instrument to confirm the internal defects of the fracture of the die-casting aluminum alloy test block after impact; S4. Determine whether this batch of die-casting aluminum alloys can be included according to the internal defect judgment standard of die-casting aluminum alloys. The rapid detection method for internal defects of die-casting aluminum alloys described in the present invention does not use special detection equipment and analysis software for internal defects of metal materials, and combines metal pendulum impact testing machines to make test blocks for die-casting aluminum alloy impacts at specific positions by testing personnel. The impact operation function of the impact testing machine is used to realize the destructive fracture of the specific position of the die-casting aluminum alloy, and the fracture analysis of the die-casting aluminum alloy is carried out with the help of the image size measuring instrument, so as to realize the rapid detection of its internal defects.

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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