Alloy for fusible plug and fusible plug

A technology for fusible plugs and alloys, which is applied in the field of alloys for fusible plugs, and can solve problems such as the use of alloys that cannot be used for fusible plugs.

Inactive Publication Date: 2010-12-01
SENJU METAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the temperature fuse is used as a load for electronic equipment to cope with abnormal high temperature, it is enough to cut off the power according to the temperature. Since no pressure

Method used

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  • Alloy for fusible plug and fusible plug
  • Alloy for fusible plug and fusible plug
  • Alloy for fusible plug and fusible plug

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An alloy for a fusible plug and a fusible plug according to the present invention were produced, and their characteristics were compared.

[0030] The fusible alloys shown in Table 1 and Table 2 were prepared, and the heating curves from the differential thermal analysis of each alloy composition were measured, including the starting point of the endothermic peak, the lowest point of the endothermic peak, and the end point of the endothermic peak, and the solid Phase temperature, peak temperature, liquidus temperature. The melting temperature of each alloy is shown in Table 1 and Table 2.

[0031] In Table 1, Comparative Examples 4 and 5 are alloys for fusible plugs of Patent Documents 2 and 3.

[0032] The measurement conditions of the melting temperature are as follows.

[0033] 1. Determination of Differential Thermal Analysis

[0034] ·Differential thermal analysis measuring device SII differential scanning calorimeter

[0035] ·Heating rate: 5deg / min

[0036] ...

Embodiment 2

[0042] Secondly, in figure 1 The spacer 1 of the shown single-bolt type fusible plug is filled with the fusible plug alloys in Table 1 and Table 2 to make a fusible plug, and the creep characteristics of each alloy composition (called withstand voltage test) and the fusible plug are measured. plug operating temperature. A fusible plug with a total length of 28 mm and an inner diameter of a tip portion of 3 mm was used in the withstand voltage test and the operation test.

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PUM

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Abstract

Because the alloy for a conventional fusible plug contains harmful elements such as Cd and Pb and the like, the harmful elements may cause pollution. The invention provides a fusible plug. The fusible plug does not contain the harmful components Cd and Pb; even if the fusible plug is used as a safety device of a freezing device for long time, the alloy cannot be extruded from the fusible plug; and the fusible plug has strong mechanical properties such as creep property and the like. The invention adopts the solution that: the fusible plug adopts the following alloy for the fusible plug: the alloy melted at the temperature of between 70 and 75 DEG C comprises 0.1 to 2.0 mass percent of Sn, 31 to 37 mass percent of Bi and the balance of In; and the alloy melted at the temperature of between 90 and 95 DEG C comprises 0.05 to 0.4 mass percent of Zn, 47 to 55 mass percent of Bi and the balance of In.

Description

[0001] This application is a divisional application of application number: 200480044460.9, application date: 2004.11.24, and invention name: "alloy for fusible plug and fusible plug". technical field [0002] The present invention relates to an alloy for a fusible plug that functions as a protection mechanism for a freezer, especially an alloy for a fusible plug that operates at 70 to 75°C and 95 to 100°C, and a fusible plug using the alloy for a fusible plug Melt plug. Background technique [0003] In a large refrigerator, if the pressure inside the refrigerator increases abnormally or the temperature of the refrigerant rises, not only the refrigerator itself will be damaged, but also the surrounding area will be damaged due to high-pressure gas ejection. For large-scale refrigeration equipment, as a mechanism to prevent damage and destruction of the refrigerator, it is stipulated as an obligation to install a device that ensures that the pressure of the refrigerant gas of ...

Claims

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Application Information

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IPC IPC(8): C22C28/00C22C12/00C22C30/00
Inventor 加藤力弥菊池哲郎出口睦
Owner SENJU METAL IND CO LTD
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