Length calibration device and calibration method for 7a60 aluminum alloy tensile specimen at room temperature

Abstract

The invention discloses a scale distance calibration device and method for a 7A60 aluminum alloy room-temperature tensile sample. The scale distance calibration device comprises a laser marking machine and a fixing seat; the fixing seat is composed of a base and a positioning block installed at the upper top face of the base; the upper top face of the positioning block is formed with a groove. The scale distance calibration device and the method exactly realize the high-efficient scale distance calibration of the tensile sample in the physical performance test of 7A60 ultra-high aluminum alloy, avoid the shortcomings of bad controllability, low precision and low efficiency in the scale distance calibration by adopting a traditional mechanical scale distance calibrator, add accuracy of the physical performance test and greatly improve the marking efficiency, and are applicable to the batched work.

Description

technical field [0001] The invention belongs to a gauge length calibration device and a calibration method, in particular to a gauge length calibration device and a calibration method of a 7A60 aluminum alloy tensile sample at room temperature. Background technique [0002] In order to determine the elongation after fracture of 7A60 ultra-high-strength aluminum alloy tensile specimen at room temperature, the gauge length must be calibrated before the test. At present, a mechanical gauge is generally used for calibration. This equipment has a simple structure and strong versatility. In small batch tests, it can be carefully adjusted by the operator to obtain ideal results. However, due to the structure of the mechanical gauge itself, its operation is cumbersome, the punctuation accuracy is low, and it is prone to serious physical damage, which will have a negative impact on the mechanical properties of the sample. In large-scale operations, its efficiency is low, The problem...

AI Technical Summary

Problems solved by technology

However, due to the structure of the mechanical gauge itself, its operation is cumbersome, its punctuation accuracy is low, and it is prone to serious physical damage, which will have a negative impact on the mechanical properties of the sample. In large-scale operations, its efficiency is low, The problem of poor precision is particularly obvious

In addition, because the equipment is extremely easy to wear and tear, it is necessary to maintain or replace the equipment regularly to ensure the gauge length accuracy during batch operations

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