Cooling box for CTOD (crank tip opening displacement) test and operating process of cooling box

Abstract

The invention provides a cooling box for a CTOD (crank tip opening displacement) test and an operating process of the cooling box. The cooling box for the CTOD test comprises a box body, an ejecting head, a lifting frame and lifting mechanisms, wherein the box body is rectangular, and an opening is formed in the upper end of the box body and allows a sample to be placed in; the ejecting head is arranged in the middle of the bottom of the box body; the lifting frame is movably arranged in the box body, the two lifting mechanisms are located on two side walls of the box body respectively and connected to two sides of the lifting frame respectively to allow the lifting frame to move up and down in the box body. Therefore, the cooling box is safe, reliable and simple to operate, a cryogenic liquid can be effectively prevented from injuring an operator in a test link, the safety of the test is improved, and orderly and smooth implementation of the test can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of auxiliary equipment for testing, in particular to a cooling box for CTOD testing and its operation process. Background technique [0002] In the current CTOD low-temperature test, the placement and removal of the specimens are all manual operations, that is, the operator wears gloves to carry the specimens, especially to put the specimens into the cooling liquid of the cooling box, or remove them from the After the test is completed, the test piece is taken out. When using small specimens for testing, because the specimens are light, flexible, and easy to move, phenomena such as difficulty in handling, contact with coolant, falling off, and difficulty in positioning, etc., do not or rarely occur. However, for medium or large specimens, the probability of such a thing is relatively high. [0003] Large specimens are relatively large in volume and quality, and some of them have a mass of up to or even ove...

AI Technical Summary

Problems solved by technology

However, for medium or large specimens, the probability of such a thing is still relatively high

[0003] Large specimens are relatively large in volume and quality, and some of them have a mass of up to or even over 25Kg. When such specimens are used for testing, such prominent problems are likely to occur: 1. When taking out and putting in the specimen, fingers will penetrate into it. In the coolant, a certain amount of damage will occur for a long time

2 The surface of the test piece is smooth, and it is easy to fall off from the hand, and the splashed coolant will cause damage to the operator, especially the face and head

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