Ultralow-temperature tensile test device and method for ship material

A tensile test, ultra-low temperature technology, used in measuring devices, analyzing materials, and testing the strength of materials by applying stable tension/pressure, to solve the problems of sample loading and unloading and cooling, improve ship construction quality, and ensure reliability.

Pending Publication Date: 2022-03-04
HUDONG ZHONGHUA SHIPBUILDINGGROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Among the low-temperature mechanical performance testing projects currently carried out, the low-temperature and ultra-low temperature impact projects are very mature, while the low-temperature and ultra-low temperature stretching projects have just emerged and have not yet been popularized. The testing industry uses its own methods

Method used

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  • Ultralow-temperature tensile test device and method for ship material
  • Ultralow-temperature tensile test device and method for ship material
  • Ultralow-temperature tensile test device and method for ship material

Examples

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Effect test

Embodiment 1

[0046] This embodiment provides an ultra-low temperature tensile test device for ship materials,

[0047] It includes a main body frame, a force receiving mechanism, a storage bucket 22 , an upper connecting sleeve 16 and a lower connecting sleeve 19 .

[0048]Among them, the main frame includes the upper beam 1 of the testing machine, the lower beam 11 of the testing machine, the movable beam 2 and the column 3 of the testing machine, the upper beam 1 of the testing machine and the lower beam 11 of the testing machine are fixed structures, and the upper end of the column 3 of the testing machine passes through the upper beam of the testing machine 1. The lower end of the column 3 of the testing machine passes through the lower beam 11 of the testing machine. The moving beam 2 is located between the upper beam 1 of the testing machine and the lower beam 11 of the testing machine and can move up and down along the column 3 of the testing machine. The column 3 of the testing mach...

Embodiment 2

[0053] This embodiment provides a method for ultra-low temperature tensile testing of ship materials, comprising the following steps:

[0054] Step 1. Install the force-bearing mechanism on the force-bearing installation shaft 8 through the force-bearing connecting piece 4. There is a force-bearing turntable 10 between the force-bearing connecting piece 4 and the force-bearing installation shaft 8. Turn the force-bearing mechanism in or out as required. Out of the test space of the testing machine and installed firmly; the force-bearing mechanism can be transferred into the test space of the testing machine when the ultra-low temperature test is required, and transferred out of the test space of the testing machine when the ultra-low temperature test is not required, without affecting the testing machine for other tests;

[0055] Step 2, install the storage on the force bearing mechanism through the barrel connector 9;

[0056] Step 3. Connect one end of the upper connecting s...

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Abstract

The invention discloses an ultralow-temperature tensile test device and method for ship materials, the device comprises a main body frame, a stress mechanism, a storage barrel, an upper connecting sleeve and a lower connecting sleeve, the upper connecting sleeve is arranged on the main body frame, the lower connecting sleeve is mounted on the stress mechanism, and the stress mechanism is arranged on the storage barrel. A to-be-tested sample is mounted between the upper connecting sleeve and the lower connecting sleeve, is provided with a low-temperature extensometer, and is immersed into a storage barrel. According to the invention, the tensile test can be accurately and quickly carried out on the ultralow-temperature material, and the real mechanical properties such as ultralow-temperature yield strength, tensile strength, percentage elongation after fracture, percentage reduction of area and the like of the ultralow-temperature material are reflected, so that the strength and toughness of the ultralow-temperature material in an ultralow-temperature environment are verified and are used as a basis for checking and accepting the ultralow-temperature material; the material use reliability is ensured, and the ship building quality is improved.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, and in particular relates to a device and method for ultra-low temperature tensile testing of ship materials. Background technique [0002] In recent years, with the increase in the number of ships sailing in ice regions and liquefied natural gas ships, low-temperature and ultra-low temperature materials have gradually become popular. These materials need to meet the requirements of maintaining sufficient strength at ultra-low temperatures, not easily deformed, and have certain toughness requirements . Therefore, the corresponding low temperature detection requirements also follow. [0003] Among the low-temperature mechanical performance testing projects currently carried out, the low-temperature and ultra-low temperature impact projects are very mature, while the low-temperature and ultra-low temperature stretching projects have just emerged and have not yet been popularized. The testing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G01N3/02
CPCG01N3/18G01N3/02
Inventor 周承金向红施可扬吴永飞沈恩峰
Owner HUDONG ZHONGHUA SHIPBUILDINGGROUP
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