Large-diameter aluminum alloy ingot grain size inspection device and automatic inspection method

Abstract

The invention belongs to the technical field of aluminum alloy production inspection equipment. The invention relates to a large-diameter aluminum alloy ingot grain size inspection device and an automatic inspection method. The large-diameter aluminum alloy cast ingot grain size inspection device comprises a fuming cupboard, a spraying device, a visual unit and a calculation processing system. A workbench for placing an aluminum alloy cast ingot is arranged in the fuming cupboard; the spraying device is arranged above the workbench and is fixedly connected with the fuming cupboard; the visual unit is arranged above the workbench; and the visual unit is connected with the calculation processing system. The inspection method comprises the following steps: S1, establishing a grain size standard image library; S2, clamping a cast ingot; S3, carrying out corrosion treatment on the section of the cast ingot; S4, obtaining a grain size image and S5, calculating the grain size grade. According to the invention, the problem of metallographic corrosion pollution is solved, the grain size is graded by adopting a grain average area calculation method, and the result accuracy is improved by comparing and rechecking with a grain size standard image library; and automatic grading of the grain size is realized.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy production inspection equipment, and relates to a large-diameter aluminum alloy ingot grain size inspection device and an automatic inspection method. Background technique [0002] The number of grains per unit area is related to the size of the grains, and the size of the grains has a decisive influence on the mechanical properties of the metal such as tensile strength, toughness, and plasticity. Therefore, the counting of grains is of great significance in metallographic analysis. At present, when inspecting the grain size of large-diameter round ingots, there are the following problems and deficiencies: [0003] 1. Due to the large diameter of the ingot (specification diameter 1080mm, weight about 50 kg), two testers cooperate to lift the round ingot and place it on the inspection platform, which is dangerous. [0004] 2. The tester holds a bamboo clip and dips it in high-strength mixe...

AI Technical Summary

Problems solved by technology

Because the human body is in direct contact with the mixed acid at close range, it is easy to corrode the mucous membrane of the respiratory tract and cause harm to the human body

[0005] 3. Due to the influence of human factors, it is impossible to ensure that the mixed acid is evenly applied to the sample of the round ingot. Some areas of the ingot section are under-corroded, and some areas are over-corroded, which affects the test results of the ingot grain size.

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