Method and device for conducting silver or silver alloy contact hard soldering through alternating current welding machine

A silver alloy contact and electric welding machine technology, which is applied to electric heating devices, auxiliary devices, welding equipment, etc., can solve problems such as affecting the fluidity and spreadability of solder, inability to braze, and affecting the quality of brazing.

Inactive Publication Date: 2017-09-19
贵州振华群英电器有限公司(国营第八九一厂)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the brazing process, when adding flux between the solder and the metal, the amount of addition is not easy to control. If the amount is too large, the current will be broken, and th

Method used

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  • Method and device for conducting silver or silver alloy contact hard soldering through alternating current welding machine
  • Method and device for conducting silver or silver alloy contact hard soldering through alternating current welding machine
  • Method and device for conducting silver or silver alloy contact hard soldering through alternating current welding machine

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1. An electric welding machine for brazing silver or silver alloy contacts, such as figure 2 As shown, it includes an upper electrode 1 and a lower electrode 2, and also includes a pressure rod 5, a metal reed 3 is arranged between the upper electrode 1 and the lower electrode 2, and a solder 4 is placed on the metal reed 3, and the solder 4 is placed Below the pressing rod 5, the pressing rod 5 compresses the brazing material 4, and there is a contact point 6 between the brazing material 4 and the pressing rod 5.

[0019] During welding, the metal reed 3 is placed on the lower electrode 2 so that the metal reed 3 is located between the upper electrode 1 and the lower electrode 2 . Put the brazing material 4 on the metal reed 3, press the brazing material 4 and the metal reed 3 tightly with the pressing rod 5, the brazing material 4 and the pressing rod 5 have a contact 6, and then turn on the power to make the upper electrode 1 and the metal reed 3 The metal...

Embodiment 2

[0020] Embodiment 2. A kind of electric welder carries out the device of silver or silver alloy contact brazing, as image 3 As shown, it includes an upper electrode 1 and a lower electrode 2, and also includes a pressure rod 5, a metal reed 3 is placed on the lower electrode 2, a solder 4 is placed on the metal reed 3, and the solder 4 is placed under the pressure rod 5, and the pressure rod 5 Press the brazing material 4 tightly, and the brazing material 4 has a contact point 6 with the pressure rod 5 .

[0021] When welding: place the metal reed 3 on the lower electrode 2, put the brazing material 4 on the metal reed 3, press the brazing material 4 and the metal reed 3 with the pressure rod 5, and then turn on the power to make the upper electrode 1 and the The lower electrode 2 is connected, and the current flows through the lower electrode 2, so that the lower electrode 2 generates heat, and the heat is conducted to the metal reed 3, the contact 6 and the solder 4, and th...

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PUM

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Abstract

The invention discloses a method and device for conducting silver or silver alloy contact hard soldering through an alternating current welding machine. A metal reed (3) is disposed on a lower electrode (2) and provided with a soldering material (4). The soldering material (4) and the metal reed (3) are tightly pressed through a pressing rod (5), then a power source is switched on, an upper electrode (1) and the lower electrode (2) are made to communicate, heat is generated when a current flows through the lower electrode (2), and is conducted to the metal reed (3), a contact (6) and the soldering material (4), the metal reed (3) and the contact (6) are welded into a whole after the soldering material (4) reaches the melting temperature and is melted, and operation is completed. By means of the method, the current direction of the upper electrode is changed, and accordingly the influences of the addition amount of soldering flux on soldering and soldering quality are eliminated.

Description

technical field [0001] The invention relates to a method for hard brazing of silver or silver alloy contacts by an AC welding machine during the production of parts of relays or contactors, in particular to a method for brazing silver or silver alloy contacts by an AC welding machine that does not affect current conduction. Point brazing method. Background technique [0002] For the brazing of silver or silver alloy contacts of AC welding machines, the solder is silver-copper solder or copper-based solder, and the spot welding heating method usually used, such as figure 1 Shown: [0003] The upper electrode is made of copper or graphite; the lower electrode is mainly made of graphite; the solder is made of silver-copper alloy or copper-based alloy; the metal reed is usually made of copper or copper alloy, and the contact is made of silver or copper. Silver alloy material. [0004] Brazing process and principle. When the contact is brazed, the upper electrode exerts a cer...

Claims

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Application Information

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IPC IPC(8): B23K1/00B23K1/19B23K3/00B23K3/047B23K3/08
CPCB23K1/0004B23K1/0006B23K1/19B23K3/00B23K3/047B23K3/08
Inventor 张瑜陈奎顾韬姚茂吉何云山周敬林海
Owner 贵州振华群英电器有限公司(国营第八九一厂)
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