FUSIBLE PLUG - NIPPON PISTON RING CO LTD

Title:

FUSIBLE PLUG

Document Type and Number:

Japanese Patent JP2022117440

Kind Code:

A

Abstract:

To provide a fusible plug suitable for a safety device for a high-pressure gas container.SOLUTION: A fusible plug for a high-pressure gas container has a communication hole filled with a low-melting-point alloy, where a porous metal sintered body is press-fitted into at least a part of the communication hole in a length direction, and all or part of the porous metal sintered body is impregnated with the low-melting-point alloy and solidified into a composite state. The low-melting-point alloy is preferably an alloy with a melting point of 110°C. Also, the porous metal sintered body to be press-fitted is preferably a porous metal sintered body having 30% or more and 50% or less of pores in terms of an area ratio, and 80% or more of pores having a diameter of more than 5 μm of all pores in terms of an area ratio. The porous metal sintered body is preferably a porous austenitic stainless steel sintered body.SELECTED DRAWING: Figure 1

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Inventors:

TAKIGUCHI HIROSHI
AOKI ATSUYA
NUMAZAKI KAZUSHI
TAKAHASHI TAKESHI
IWAMOTO NATSUKI
WATABE YUDAI

Application Number:

JP2021208881A

Publication Date:

August 10, 2022

Filing Date:

December 23, 2021

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