Soldering flux for solder wires for robotic automatic welding and preparation method thereof

A technology of automatic welding and solder wire, applied in welding equipment, welding medium, welding/cutting medium/material, etc., which can solve the problems of high viscosity, poor fluidity and unevenness of flux.

Active Publication Date: 2013-12-25
深圳市唯特偶新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the temperature cannot be too high, the melted flux has high viscosity and poor fluidity, and the melted flux is easy to be interrupted and uneven during extrusion.

Method used

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  • Soldering flux for solder wires for robotic automatic welding and preparation method thereof
  • Soldering flux for solder wires for robotic automatic welding and preparation method thereof
  • Soldering flux for solder wires for robotic automatic welding and preparation method thereof

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preparation example Construction

[0022] The present invention also provides a preparation method for the flux used for the automatic welding of the above-mentioned robot solder wire, the steps of which are as follows:

[0023] First add the above-mentioned high-temperature solvent and rosin resin in the weight percentage into the container, heat to 155-165°C, and stir at a speed of 30-40 rpm until completely melted, then add the above-mentioned weight percentage of the linear polymer, active agent and Surfactant, continue to stir at the speed of 30-40 rpm at the aforementioned temperature for 30-45 minutes, stop stirring after the materials are melted and mixed evenly, and then the flux for robot automatic welding solder wire can be obtained. Pour the flux prepared above into an extruder, and extrude it into the solder wire at a temperature of 120-130°C and an air pressure of 0.18-0.22Mpa. The flux accounts for 2.8-3.2% by weight of the solder alloy. Solder wires of different specifications are drawn through ...

Embodiment 1

[0026] This embodiment provides a kind of flux that robot automatic soldering tin wire is used, is made up of the component of following weight:

[0027]

[0028]

[0029] The above-mentioned polystyrene is highly linear polystyrene (HDPS 1300J, Mitsui Corporation of Japan); FC-4430 is produced by 3M Company of the United States.

[0030] First add 55g propylene glycol butyl ether, 600g hydrogenated rosin and 247g polymerized rosin into the container, heat to 160°C while stirring at a speed of 35 rpm until completely melted, then add 70g polystyrene, 16g suberic acid, 8g Diethylamine hydrobromide and 4g FC-4430 were stirred for 40 minutes at a speed of 35 rpm, and the stirring was stopped after the materials were melted and mixed uniformly to obtain the flux for robot automatic welding solder wire. Pour the flux prepared above into the extruder, and extrude it into the solder alloy (alloy composition is Sn96.5Ag3.0Cu0.5) wire at a temperature of 125°C and an air pressure...

Embodiment 2

[0033] This embodiment provides a kind of flux that robot automatic soldering tin wire is used, is made up of the following components by weight percentage:

[0034]

[0035] The above polystyrene is highly linear polystyrene (HDPSP 5000G Korea LG Company), and the above FC-4430 is produced by 3M Company of the United States.

[0036] First add 80g propylene glycol butyl ether, 600g hydrogenated rosin and 187g polymerized rosin into the container, heat to 160°C and stir at a speed of 35 rpm until completely melted, then add 105g polystyrene propylene, 16g suberic acid, 8g Diethylamine hydrochloride and 4g FC-4430 were stirred for 40 minutes at a speed of 35 rpm, and the stirring was stopped after the materials were melted and mixed uniformly to obtain the flux for robot automatic welding solder wire. Pour the flux prepared above into the extruder, and extrude it into the solder alloy (alloy composition is Sn96.5Ag3.0Cu0.5) wire at a temperature of 125°C and an air pressure ...

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Abstract

The invention provides soldering flux for solder wires for robotic automatic welding. The soldering flux comprises, by weight, 6.0-11.0% of linear polymer, 5.0-8.5% of high-temperature solvent, 2.0-3.5% of active agent, 0.2-1.2% of surfactant, and the balance of rosin resin. The soldering flux has the advantages that the problem that the flux easily breaks and is easily uneven can be avoided; surface tension of molten solder is reduced, wetting power is increased, weldability of the solder is enhanced, the solder is squeezed to the solder wires at agreeably high temperature and is full and even, and high wetting and expansion rate of the solder wires can be guaranteed; welding defectives such as tin bonding and missing solder during robotic automatic welding can be avoided.

Description

technical field [0001] The invention relates to the field of soldering flux, and more specifically relates to a soldering flux for robot automatic welding solder wire and a preparation method thereof. Background technique [0002] With the rapid development of the electronics industry, electronic products are becoming more and more miniaturized and sophisticated. In the past, most electronic products were soldered and assembled by wave soldering, but wave soldering required manual insertion of components, resulting in low production efficiency, high energy consumption, and high material costs. At present and in the future, a large number of reflow furnaces will be used for chip soldering. This process not only overcomes the above-mentioned shortcomings of wave soldering, but also makes electronic products smaller and more precise. Reflow soldering has many advantages, but some special components in the reflow soldering process must still be soldered manually with solder wir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/363
Inventor 唐欣
Owner 深圳市唯特偶新材料股份有限公司
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