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Alloy type thermal fusing body made of temperature fuse wire containing rare-earth elements of lanthanum and cerium

A rare earth element and alloy-type technology, applied in the field of alloy-type thermal fuse links, can solve the problems of high content, fragility, inability to meet the requirements of installation process and stable use, etc.

Inactive Publication Date: 2011-04-27
洪湖市蓝光电子有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alloy of Sn-Bi composition is made into a thermal fuse, which is fragile due to the high content of Bi, and is not suitable for the welding and assembly process of thermal fuse production; at the same time, the anti-vibration ability and mechanical stability of the finished product are poor, which cannot meet the general requirements. The installation process and stable use requirements of electrical appliances, electronic equipment and similar components used in the indoor environment during the production process

Method used

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  • Alloy type thermal fusing body made of temperature fuse wire containing rare-earth elements of lanthanum and cerium
  • Alloy type thermal fusing body made of temperature fuse wire containing rare-earth elements of lanthanum and cerium
  • Alloy type thermal fusing body made of temperature fuse wire containing rare-earth elements of lanthanum and cerium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The mass percentage of the alloy composition is: Sn 45.5%, Bi 48.2%, In 6%, Ce 0.2%, La 0.1% base metal is processed into a wire with a diameter of 550 μm by wire extrusion. The wire extrusion temperature is 55 ° C. Wire pressure is 10MPa. To make a square radial alloy type thermal fuse, the flux is 71.5 parts by mass of super natural rosin, 15 parts by mass of stearic acid, 5 parts by mass of ethylene-vinyl acetate copolymer (EVA for short), and di-n-octyl sebacate 2.5 parts by mass, 1 part by mass of glycerin, and 5 parts by mass of triethanolamine.

[0034] 1. Take 25 samples, pass a DC current of 0.008 ampere respectively, soak them in a glycerin oil tank with a heating rate of 1°C / min (immersion depth 60-120mm), and measure the temperature of the glycerin that was cut off due to the blown thermal fuse. The measured working temperature is within the range of 128°C±2°C.

[0035] 2. Take 25 samples, pass a DC current of 1.1 amperes respectively, soak them in a glyce...

Embodiment 2

[0038] The mass percentage of the alloy composition is: Sn 45.5%, Bi 48.2%, In 6%, Ce 0.2%, La 0.1%, the base metal is processed into a wire with a diameter of 550 μm by spinning, the spinning temperature is 132 ° C, and the spinning pressure is 0.02MPa, add 50-100ml of glycerol to the vessel containing the molten alloy. To make a square radial alloy type thermal fuse, the flux is 71.5 parts by mass of super natural rosin, 15 parts by mass of stearic acid, 5 parts by mass of ethylene-vinyl acetate copolymer (referred to as EVA), 2.5 parts by mass of di-n-octyl sebacate parts by mass, 1 part by mass of glycerin, and 5 parts by mass of triethanolamine.

[0039] 1. Take 25 samples and place them in a constant temperature box at 116°C for 3,000 hours of uninterrupted high-temperature aging. The measured working temperature is in the range of 126°C to 130°C.

[0040] 2. Take 25 samples and place them in a constant temperature box at 121°C for 3,000 hours of uninterrupted high-tem...

Embodiment 3

[0044] The mass percentage of the alloy composition is: Sn 45.5%, Bi 48.2%, In 6%, Ce 0.2%, La 0.1% base material is processed into a wire with a diameter of 550 μm by wire extrusion, the wire extrusion temperature is 55 ° C, and the wire extrusion pressure is 10MPa. To make a square radial alloy type thermal fuse, the flux is 71.5 parts by mass of super natural rosin, 15 parts by mass of stearic acid, 5 parts by mass of ethylene-vinyl acetate copolymer (referred to as EVA), 2.5 parts by mass of di-n-octyl sebacate parts by mass, 1 part by mass of glycerin, and 5 parts by mass of triethanolamine.

[0045] 1. Take 25 pieces of samples, respectively pass a current with a power factor of 0.60, a voltage of AC275V, and a current of 1.1 ampere, and heat it up in an oven with a heating rate of 2°C / min to make it fuse. Check that the square insulating box 3 and sealant 2 of each sample are not damaged, and there is no flame ejection, the insulation resistance value between the two t...

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Abstract

The invention relates to an alloy type thermal fusing body made of a temperature fuse wire containing rare-earth elements of lanthanum and cerium, belonging to the technical field of alloy type thermal fusing bodies. The alloy type thermal fusing body comprises tinned copper wires, a sealant, an insulator, a fluxing agent and the temperature fuse wire, wherein the insulator is in the shape of a square or a cylinder; two tinned copper wires are connected through the temperature fuse wire; the fluxing agent is filled around the temperature fuse wire; the sealant is filled around the tinned copper wires positioned on an opening of the insulator; and the temperature fuse wire is manufactured from the following alloy components by mass percent: 45.5% of Sn, 48.2% of Bi, 6% of In, 0.2% of Ce and 0.1% of La. The invention has working temperature of 126 DEG C-130 DEG C.

Description

Technical field: [0001] The invention relates to an alloy type thermal fuse made of a temperature fuse wire containing rare earth elements lanthanum and cerium with a working temperature of 126°C to 130°C, and belongs to the technical field of alloy type thermal fuses. Background technique: [0002] As electrical appliances, electronic equipment and similar components used in general indoor environments, in order to prevent them from overheating in case of failure, alloy type thermal fuses are usually used for protection. The structure of the alloy type thermal fuse is as follows: an alloy with a given melting point is used as a temperature fuse, a flux is coated on the temperature fuse, and an insulator is used to seal the temperature fuse coated with the flux. [0003] The working principle of the alloy type thermal fuse is as follows: [0004] Alloy type thermal fuses installed in electrical appliances, electronic equipment and similar components used in general indoor e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H85/06C22C30/04
Inventor 吴峰代柏林田杰茹红英盛成罗梦婕童华佼
Owner 洪湖市蓝光电子有限责任公司