Heat preservation tool in impact test low-temperature groove
A technology of impact test and low temperature bath, which is applied in the direction of using a single impact force to test the strength of materials, preparation of test samples, measuring devices, etc. Avoid turbidity and poor visual field, facilitate positioning and clamping, accurate and fast positioning and clamping effect
Pending Publication Date: 2019-10-08
SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD
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Problems solved by technology
[0004] The currently used grid, the samples can be separated from each other when they are placed, but during the heat preservation process, due to the need to stir the liquid medium in the low temperature tank to make the temperature uniform, it often leads to the impact of the sample on the grid. Move, touch each other, do not meet the requirements of the standard
The conventional practice is to leave as much space as possible in a low-temperature tank to reduce the number of samples placed, but this will reduce the test efficiency, and there is no guarantee that the samples will not touch each other
Method used
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Embodiment 1
[0035] The utility model relates to a thermal insulation tool in a low-temperature tank for an impact test, which is provided with a tray grid, and a plurality of grooves for placing samples are arranged on the tray grid. The depth of the groove is 5-8mm. The top view of the groove is as Figure 4 As shown, it is in the shape of "convex". The main body of the groove is rectangular, with a length of 70-80 mm and a width of 20-30 mm. The second side of the groove ( Figure 4 The upper part of the center) is provided with a recessed part, the recessed part is recessed by 5-10 mm, and the width of the recessed part is 20-30 mm. The bottom of the groove slopes downward toward the second side.
[0036] In summary, the thermal insulation tooling in the impact test low temperature tank of the present invention is convenient, efficient and reasonable to use, the thermal insulation process meets the requirements of the standard, can be positioned more quickly and accurately during t...
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Abstract
The invention discloses a heat preservation tool in an impact test low-temperature groove. The heat preservation tool comprises a plurality of tray grids which are arranged in a stacked mode, and a plurality of grooves used for placing samples are formed in the tray grid of each layer, wherein the bottom surface of the groove is inclined towards the second side surface from the first side surfaceof the groove, the first side surface and the second side surface are oppositely arranged, and the bottom of the second side surface is lower than the bottom of the first side surface; a first gap isformed between the placed sample and the first side surface; the second side surface is provided with a recessed portion, so that a second gap is formed between the placed sample and the second side surface; in the use state, when the sample is placed into the groove, the sample can slide towards the second side surface of the groove; when the sample is transferred, a transferring device can extend into the first gap and the second gap to clamp the sample. The heat preservation tool in the invention can be rapidly and accurately positioned and does not cause mutual touch of the samples.
Description
technical field [0001] The invention relates to the technical field of metal detection equipment, in particular to a thermal insulation tool in a low-temperature tank for an impact test. Background technique [0002] The Charpy impact test is a test used to determine the notch resistance (toughness) of metallic materials. Prepare a metal sample with a certain shape and size, so that it has a U-shaped notch or a V-shaped notch, and it is in a simply supported beam state on the Charpy impact testing machine. For notch punching, calculate the absorbed energy of the sample by using the height difference when the pendulum rises again when it breaks. A large absorbed work value (joule) indicates that the material has good toughness and is not sensitive to gaps in the structure or other stress concentrations. [0003] The Charpy impact test can be used for impact tests at different temperatures. It is more common to use a liquid medium for cooling. The relevant national standard ...
Claims
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IPC IPC(8): G01N3/30G01N3/02G01N1/42
CPCG01N3/30G01N3/02G01N1/42
Inventor 谢晓宇顾佳磊丁建薛小丽
Owner SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD