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Eutectic Bi-Pb-Sn-Cd fusible alloy at temperature of 70 DEG C and method for preparing eutectic Bi-Pb-Sn-Cd fusible alloy

A fusible alloy, bi-pb-sn-cd technology, applied in the field of alloys, can solve problems such as insensitivity and inaccurate operating temperature, and achieve the effects of accurate melting point, accurate melting point operating temperature and good application prospects

Inactive Publication Date: 2018-01-30
SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, there have been many safety accidents caused by the inaccurate action temperature of the fusible alloy plug. The main reason is that the action temperature is inaccurate and insensitive.

Method used

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  • Eutectic Bi-Pb-Sn-Cd fusible alloy at temperature of 70 DEG C and method for preparing eutectic Bi-Pb-Sn-Cd fusible alloy
  • Eutectic Bi-Pb-Sn-Cd fusible alloy at temperature of 70 DEG C and method for preparing eutectic Bi-Pb-Sn-Cd fusible alloy
  • Eutectic Bi-Pb-Sn-Cd fusible alloy at temperature of 70 DEG C and method for preparing eutectic Bi-Pb-Sn-Cd fusible alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0022] According to mass percentage, it consists of the following components: Bi 47%, Pb 25%, Sn 24% and Cd 4%. The preparation method includes: weighing Bi, Pb, Sn and Cd in proportion, using a high-frequency heating furnace to melt the alloy under the condition of pre-evacuation and then filling with argon, and controlling the melting temperature at 360°C to obtain Bi - Pb-Sn-Cd fusible alloy, denoted as Alloy 1.

Embodiment 2

[0024] According to mass percentage, it consists of the following components: Bi 54%, Pb 25%, Sn 15% and Cd 6%. The preparation method includes: weighing Bi, Pb, Sn and Cd in proportion, using a high-frequency heating furnace to melt the alloy under the condition of pre-evacuation and then filling with argon, and controlling the melting temperature at 360°C to obtain Bi - Pb-Sn-Cd fusible alloy, denoted as alloy 2.

Embodiment 3

[0026] According to mass percentage, it consists of the following components: Bi 57%, Pb 25%, Sn 9% and Cd 9%. The preparation method includes: weighing Bi, Pb, Sn and Cd in proportion, using a high-frequency heating furnace to melt the alloy under the condition of pre-evacuation and then filling with argon, and controlling the melting temperature at 360°C to obtain Bi -Pb-Sn-Cd fusible alloy, denoted as alloy 3.

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Abstract

The invention relates to eutectic Bi-Pb-Sn-Cd fusible alloy at the temperature of 70 DEG C and a method for preparing the eutectic Bi-Pb-Sn-Cd fusible alloy. The eutectic Bi-Pb-Sn-Cd fusible alloy comprises, by weight, 49%-51% of Bi, 25%-27% of Pb, 13%-14% of Sn and 9%-10% of Cd. The method includes proportionally weighing the Bi, the Pb, the Sn and the Cd; smelting alloy by the aid of a high-frequency heating furnace at the melting temperatures of 340-380 DEG C under the control under the conditions that the high-frequency heating furnace is preliminarily vacuumized and then is filled with argon. The eutectic Bi-Pb-Sn-Cd fusible alloy and the method have the advantages of high strength, accurate melting point, narrow melting range, excellent comprehensive performance, simple preparation process, low cost and excellent application prospect.

Description

technical field [0001] The invention belongs to the field of alloys, in particular to a 70°C eutectic Bi-Pb-Sn-Cd eutectic alloy and a preparation method thereof. Background technique [0002] Bi-Pb-Sn-Cd fusible alloy has low melting point, narrow melting range, and good brazing performance. It is often used to make temperature and heat sensitive components in electrical appliances, fire protection, fire alarms and other devices. The sensitivity and stability of the temperature sensing and heat-sensitive elements depend on the melting point and mechanical properties of the fusible alloy, so the study of the composition, structure and properties of the fusible alloy is of great value to the development and application of the fusible alloy heat-sensitive element . [0003] Fusible alloy plug, as an important accessory on the valve of CNG gas cylinder for vehicles, plays a key role in the filling and use of gas cylinder medium, and is the last line of defense for safety prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/04C22C12/00C22C1/02
Inventor 李前朱洪波郑红星王烈高徐维普汪双敏
Owner SHANGHAI INST OF SPECIAL EQUIP INSPECTION & TECHN RES
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