High-temperature rigidity measuring method based on electrified heating

Abstract

The invention provides a high-temperature rigidity measuring method based on electrified heating, and relates to a metal material rigidity measuring method. The high-temperature rigidity measuring method comprises the steps of 1) preparing a rigidity meter, an adjustable direct-current voltage-stabilized source, two heating electrodes and a temperature sensor; 2) placing a metal work piece to be measured on a measuring table of the rigidity meter, and adjusting the position; and arranging the two heating electrodes on the work piece to be measured; connecting the two heating electrodes with the adjustable direct-current voltage-stabilized source through lead wires; forming a loop through both electrodes of the adjustable direct-current voltage-stabilized source, the two heating electrodes, and the material of the metal work piece to be detected between the two heating electrodes; and arranging the temperature sensor beside a rigidity to-be-measured point of the metal work piece to be measured; 3) turning on the adjustable direct-current voltage-stabilized source, and heating the metal work piece to be measured in an electrified manner; 4) starting to measure the rigidity of the metal work piece to be measured when the measured temperature of the temperature sensor reaches a desired temperature value; 5) recording rigidity measurement data, and repeating the steps 4) and 5) if the rigidities of the metal work piece under a plurality of the temperature values need to be measured; and 6) switching off the adjustable direct-current voltage-stabilized source.

Description

technical field [0001] The invention relates to a method for measuring hardness of metal materials, in particular to a method for measuring hardness at high temperature based on electric heating. Background technique [0002] With the continuous development of modern industrial technology, the study of the performance of metal materials at room temperature is far from meeting the requirements of engineering, and higher requirements are put forward for the performance of metal materials at high temperatures, especially in aerospace. field. The high temperature performance test of metal materials has been listed as one of the basic tests. However, the acquisition of some performance indicators of metal materials at high temperatures is often more complicated than at room temperature, especially the hardness of metals at high temperatures is difficult to measure. Measuring the hardness of metals at high temperatures has always been a concern. question. [0003] According to ...

AI Technical Summary

Problems solved by technology

But these measurement methods and devices are very inconvenient in actual measurement. The workpiece needs to be heated in a vacuumized heating box, and the hardness measuring indenter needs to be inserted into the heating box as a whole to load and measure, and the temperature is kept constant by the temperature control device.

These hardness measuring devices are complex and cumbersome to operate, and cannot easily and quickly measure the hardness of metals at high temperatures; the measuring devices are bulky and expensive, and are not suitable for wide application in actual production

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