Device for measuring breaking- after lateral swelling capacity of impact test piece after irradiation

Abstract

The invention discloses a measurement device used for measuring lateral expansion quantity of broken Charpy key hole specimen after radiation. The device of the invention comprises two heavy hammers, a pulley, an indicating gauge, a contact block, a guideway, a sample installation trough and a rolling trough. A compression spring in the indicating gauge is pulled away by the free drop of the heavy hammer so as to lead the ejector rod of the indicating gauge to be controlled under the traction of the heavy hammer; the guideway is internally provided with the sliding trough; the contact block can freely slide in the sliding trough; the broken sample is arranged inside the sample installation trough; the compression spring inside the rolling trough pushes a bump bead to tightly press the sample so as to lead two broken samples to be close to a benchmark surface and kept on the same plane; the compression spring of the indicating gauge is used for pushing the contact blocks to move face to face to tightly press the sample, thus ensuring good contact between the broken sample and the contact block. The measurement device of the invention used for measuring the lateral expansion quantity of the Charpy key hole specimen after radiation is simple and feasible, has high measurement precision, facilitates the remote operation by manipulators in a heat room, and greatly reduces the working quantity and labour intensity of the working personnel.

Description

technical field [0001] The invention relates to a device for measuring the mechanical properties of materials, in particular to a device for measuring the lateral expansion of impact samples after irradiation. Background technique [0002] In addition to being subjected to high temperature, high pressure and high load, reactor pressure vessel materials are also subjected to neutron irradiation during service, which leads to degradation of material properties. Therefore, pressure vessel materials are required to have sufficient mechanical properties. It is an important means to ensure the safe operation of the reactor to study the change of mechanical properties of the materials in the reactor due to the effect of neutron irradiation during service. [0003] At present, impact tests and tensile tests are generally used to test the mechanical properties of pressure vessel materials during service. The lateral expansion after fracture of the impact specimen is one of the impor...

AI Technical Summary

Problems solved by technology

This measuring device needs to measure one sample four times, but the operation of the hot chamber is frequent and difficult, which is not conducive to the measurement of samples after irradiation

Images