Lead-free solder tin wire applicable to drag soldering technology

A lead-free solder, lead-free solder technology, applied in welding media, welding equipment, welding/cutting media/materials, etc., to achieve the effects of stable performance, reduced surface tension, and non-conductive performance

Inactive Publication Date: 2017-12-22
广东中实金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with automatic spot welding, it poses new challenges to the tin wire used by the automatic drag welding machine. First, the tin wire speed on the tin wire is fast to ensure the welding effect during fast welding. There will be no soldering phenomenon during the soldering process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh the following components by weight:

[0024] Ethylene glycol 2g

[0025] Propylene glycol methyl ether 1.8g

[0026] AEO-9 0.5g

[0027] Glutaric acid 2.5g

[0028] Salicylamide 1g

[0029] Benzotriazole 0.2g

[0030] Water white rosin 92g.

[0031] Add all the above materials into the container, dissolve and stir at a temperature of 145-170°C until the flux becomes a uniform transparent liquid, then add it to the rosin barrel of the hydraulic press, and go through hydraulic pressure, rolling, wire drawing, and winding processes. Finally, the product of the present invention is made into a lead-free solder wire suitable for drag soldering technology.

Embodiment 2

[0033] Weigh the following components by weight:

[0034] Tetrahydrofurfuryl alcohol 1g

[0035] Propylene glycol ether 1.5g

[0036] FSN-100 1.0g

[0037] Glutaric acid 6g

[0038] Benzotriazole 0.3g

[0039] KE-604 60.2g

[0040] Pentaerythritol ester 30g.

[0041] Add all the above materials into the container, dissolve and stir at a temperature of 145-170°C until the flux becomes a uniform transparent liquid, then add it to the rosin barrel of the hydraulic press, and go through hydraulic pressure, rolling, wire drawing, and winding processes. Finally, the product of the present invention is made into a lead-free solder wire suitable for drag soldering technology.

Embodiment 3

[0043] Weigh the following components by weight:

[0044] Tetrahydrofurfuryl alcohol 1.5g

[0045] Citric acid 0.5g

[0046] Salicylamide 3g

[0047] Imidazole 6g

[0048] Triethylamine 0.4g

[0049] Acrylic resin 30g

[0050] QH-604 58.6g.

[0051] Add all the above materials into the container, dissolve and stir at a temperature of 145-170°C until the flux becomes a uniform transparent liquid, then add it to the rosin barrel of the hydraulic press, and go through hydraulic pressure, rolling, wire drawing, and winding processes. Finally, the product of the present invention is made into a lead-free solder wire suitable for drag soldering technology.

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PUM

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Abstract

The invention discloses a lead-free solder tin wire applicable to the drag soldering technology. The lead-free solder tin wire comprises the following components in percentage by weight: 96.0%-98.5% of lead-free solder and 4.0%-1.5% of scaling powder, wherein the scaling powder comprises the following components in percentage by weight: 1-4% of an organic solvent with a low boiling point, 4-10% of an activator, 0-0.5% of corrosion inhibitor and the balance of modified rosin. The lead-free solder tin wire can rapidly weld a component on a base plate, is high in tin breaking performance, does not cause the continuous tin phenomenon during the continuous application process, greatly improves the working efficiency, lowers the cost, does not contain the forbidden substances including RoHS2.0, REACH and the like, does not cause harm to the environment and meets the environmental protection requirement.

Description

technical field [0001] The invention relates to the technical field of solder wire, in particular to a lead-free solder wire suitable for drag soldering technology. technical background [0002] With the development of the market economy, labor costs are getting higher and higher. In order to save costs, many companies start to use machinery and equipment, and the traditional manual soldering iron soldering is gradually replaced by automatic soldering machines. The automatic soldering machine starts to use automatic spot welding. After welding a point, it needs to lift the welding head, and then proceed to the next spot welding. However, the efficiency of this method needs to be further improved, so the automatic drag welding machine appears. [0003] Compared with the automatic spot welding machine, the automatic drag welding machine can weld many points at one time without lifting the welding head, which greatly improves the work efficiency. However, compared with automat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/26B23K35/36B23K35/40
CPCB23K35/262B23K35/3613B23K35/40
Inventor 方翰楷范欢方翰宽方喜波梁静珊
Owner 广东中实金属有限公司
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