Wave-soldering brazing filler metal active agent

An active agent and wave soldering technology, applied in the direction of welding/cutting medium/material, welding medium, welding equipment, etc., to achieve uniform heat distribution, improve welding process, and improve wettability and fluidity

Inactive Publication Date: 2010-07-21
李平荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to better solve the problem of tin slag, improve product quality, and reduce production costs, the invention provides a wave soldering solder activator, which can not only effectively prevent the oxidation of lead-free solder, but also can wrap the tin slag Most of the lead-free solder is restored, which effectively solves the problem of tin slag, and can achieve convenient maintenance of equipment and clean tin furnace

Method used

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  • Wave-soldering brazing filler metal active agent
  • Wave-soldering brazing filler metal active agent
  • Wave-soldering brazing filler metal active agent

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Embodiment Construction

[0039] The wave soldering solder activator used in the present invention can be a dimer acid, a trimer acid or a mixture of the above two acids. In one embodiment of the present invention, take commercially available dimer acid and trimer acid as active agent, in fact, dimer acid or trimer acid or the mixture of both can be used as active agent, and as required, also Alcohols such as nonylphenol ethoxylate or isopropanol can be added to reduce the concentration of the active agent. The specific operating steps of using the wave soldering solder activator of the present invention are as follows:

[0040] 1. When the wave crest is normally opened for melting tin, clean up the tin slag, and leave about 2-3 kg of tin slag on the tin surface;

[0041] 2. In the tin furnace, use ROHS-compliant metal sheets to control the direction of tin flow, so that tin liquid and tin slag flow out to one end of the tin furnace that is convenient to operate, and then make a reduction area at this...

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Abstract

The invention relates to a wave-soldering brazing filler metal active agent containing dimer acid, trimer acid or the mixture of the dimer acid and the trimer acid. The wave-soldering brazing filler metal active agent is oily liquid and forms a layer of protective film on the surface of fused brazing filler metal to protect the fused brazing filler metal from being oxidized and prevent the brazing filler metal from adsorbing with oxygen in air, thereby reducing the forming speed of tin slag, saving the consumption of soldering tin and power consumption and reducing production cost. The wave-soldering brazing filler metal active agent can also greatly improve the quality of products, enhance the soldering force of the products and simultaneously be convenient for the maintenance of equipment.

Description

technical field [0001] The patent application of the present invention relates to a wave soldering solder activator. The activator can prevent molten solder from being oxidized and reduce oxidized tin slag to usable metal, which belongs to the technical field of wave soldering. Background technique [0002] In industrial production, in order to achieve the combination of two materials (or parts), it is necessary to add fillers in or beside the gap, and this filler is solder, and the melting point of the solder must be lower than the melting point of the welding material. In the electronic assembly industry, the most important solders are tin-lead alloys and tin alloys. Many electronic manufacturers often use liquid tin-lead alloys (or tin alloys) to solder various components on the PCB to fix them. effect. At first, workers welded by hand, but the production efficiency of manual welding is low and cannot adapt to large-scale production. So a kind of welding equipment - wav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/22H05K3/34
Inventor 李平荣
Owner 李平荣
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