A silver-based electrical contact that can be directly soldered and its manufacturing method

An electric contact and silver-based technology, which is applied in the field of brazing, can solve the problems that silver-based electric contacts cannot be directly brazed, achieve automatic and standardized welding, significantly improve industrial application value, and achieve high welding quality.

Active Publication Date: 2019-08-23
上海天固焊接器材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned problems and demands in the prior art, the object of the present invention is to provide a silver-based electrical contact that can be directly soldered and its manufacturing method, so as to solve the technical problem that the silver-based electrical contact cannot be directly soldered, and realize Silver-based electrical contacts can be welded automatically and standardized to meet the rapid development needs of the electronics industry

Method used

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  • A silver-based electrical contact that can be directly soldered and its manufacturing method

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Embodiment 1

[0024] 1. Preparation of paste fluid for brazing composite materials:

[0025] Bond 10 parts by mass of flux (you can choose FB102 silver flux produced by Shanghai Tiangu Welding Equipment Co., Ltd.), 7 parts by mass of binder (you can choose Handy Flo 130 produced by Lukes Brazing Materials (Suzhou) Co., Ltd. agent), 8 parts by mass of curing agent (the epoxy resin curing agent produced by Shandong Deyuan Epoxy Technology Co., Ltd. can be selected) and 75 parts by mass of brazing alloy powder are mixed, and stirred under vacuum until it becomes a paste-like fluid (the viscosity value is 100,000 centipoise); the brazing alloy powder is composed of 7.5wt% Ni, 8.2wt% Sn, 6.0wt% P and a balance of Cu;

[0026] 2. Print the obtained paste fluid on the welding surface of the silver tin oxide alloy electrical contact with a dispenser;

[0027] 3. Sintering the silver-tin oxide alloy electrical contacts printed with the paste fluid at 150° C. under the protection of an inert gas (pr...

Embodiment 2

[0031] 1. Preparation of paste fluid for brazing composite materials:

[0032] 7.5 parts by mass of flux (FB102 silver flux produced by Shanghai Tiangu Welding Equipment Co., Ltd. can be selected), 10 parts by mass of binder (Handy Flo 130 produced by Lukes Brazing Materials (Suzhou) Co., Ltd. can be used for bonding) agent), 12.5 parts by mass of curing agent (the epoxy resin curing agent produced by Shandong Deyuan Epoxy Technology Co., Ltd. can be selected) and 70 parts by mass of brazing alloy powder are mixed, and stirred under vacuum until it becomes a paste-like fluid (viscosity value is 250,000 centipoise); the brazing alloy powder is made up of 6.0wt% Ni, 9.0wt% Sn, 7.0wt% P and balance Cu;

[0033] 2. Print the obtained paste fluid on the welding surface of the silver tin oxide alloy electrical contact with a dispenser;

[0034] 3. Sintering the silver tin oxide alloy electrical contact printed with the paste fluid at 120° C. under the protection of an inert gas (pr...

Embodiment 3

[0038] 1. Preparation of paste fluid for brazing composite materials:

[0039] Bond 5 parts by mass of flux (you can choose FB102 silver flux produced by Shanghai Tiangu Welding Equipment Co., Ltd.), 15 parts by mass of binder (you can choose Handy Flo 130 produced by Lukes Brazing Materials (Suzhou) Co., Ltd. agent), 15 parts by mass of curing agent (the epoxy resin curing agent produced by Shandong Deyuan Epoxy Technology Co., Ltd. can be selected) and 65 parts by mass of brazing alloy powder are mixed, and stirred under vacuum until it becomes a paste-like fluid (viscosity value is 400,000 centipoise); the brazing alloy powder is made up of 8.0wt% Ni, 7.0wt% Sn, 5.0wt% P and balance Cu;

[0040] 2. Print the obtained paste fluid on the welding surface of the silver tin oxide alloy electrical contact with a dispenser;

[0041] 3. Sintering the silver-tin oxide alloy electrical contacts printed with the paste fluid at 180° C. under the protection of an inert gas (preferably ...

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Abstract

The present invention discloses a directly-brazable silver-based electrical contact and a manufacturing method thereof. According to the silver-based electrical contact, a brazing composite material layer is sintered on the welding surface of a silver-based electrical contact body; the brazing composite material at least comprises brazing alloy powder, a soldering flux, an adhesive and a curing agent. The manufacturing method of the silver-based electrical contact includes the following steps that: the components of the brazing composite material are mixed according to a certain proportion, so that a paste fluid can be formed; the paste fluid is printed on the welding surface of the silver-based electrical contact through a dispensing machine; and sintering and curing are performed under the protection of an inert gases. According to the directly-brazable silver-based electrical contact provided by the invention, direct brazing can be realized, the consistency of welding quality can be ensured, energy-saving performance and environmental friendliness can be realized, the automatic and standardized welding of the silver-based electrical contact can be realized. The directly-brazable silver-based electrical contact has a significant industrial application value.

Description

technical field [0001] The present invention relates to a silver-based electrical contact and a manufacturing method thereof, in particular to a silver-based electrical contact capable of direct soldering and a manufacturing method thereof, belonging to the field of brazing technology. Background technique [0002] With the rapid development of the economy, the electronics industry has also developed at an unprecedented speed. Silver-based electrical contacts are one of the most critical contact elements in high-voltage switches. They have high electrical conductivity, wear resistance and arc resistance, and are widely used in switching circuits of various electrical appliances. However, since the current production of silver-based electrical contacts does not have a brazing material layer, the silver-based electrical contacts cannot be directly brazed on the bridge of the electrical appliance, and the solder must be manually pre-set between the silver-based electrical conta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/04H01H11/04
CPCH01H1/04H01H11/04
Inventor 胡煜保徐巧儒唐晓国
Owner 上海天固焊接器材有限公司
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