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A solid flux for stainless steel soldering

A flux and soldering technology, which is applied in welding medium, welding equipment, welding/cutting medium/material, etc. Soldering performance instability and other problems, to achieve the effect of improving the reliability of solder joints, promoting spreading, and improving service life

Active Publication Date: 2016-08-24
THOUSAND ISLAND METAL FOIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a solid flux for stainless steel soldering and its preparation method, which can effectively solve the problem that the soldering activity of soldering at 320-420°C cannot meet the actual production requirements, and can effectively solve the problem of soldering flux The problem of unstable performance can effectively solve the problem of poor solder spreading and low expansion rate

Method used

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  • A solid flux for stainless steel soldering
  • A solid flux for stainless steel soldering
  • A solid flux for stainless steel soldering

Examples

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preparation example Construction

[0048] Correspondingly, the present invention also provides a method for preparing solid flux as described above, which is characterized in that it includes the following steps:

[0049] Step a, by weight ratio, mixing and stirring the organic co-solvent and the metal active agent;

[0050] Step b, adding an acid active agent to the solution prepared in step a, and standing for 24 hours;

[0051] Step c, heating the solution prepared in step b to 140-145°C to remove moisture brought in or generated during the reaction, and then cooling to room temperature to obtain solid crystals;

[0052] Step d, placing the solid crystalline substance obtained in step c in a reactor, heating and maintaining the temperature at 105-120°C, and stirring until it melts into a liquid substance;

[0053] Step e, adding the corrosion inhibitor to the molten liquid substance, and continuously stirring for 5-30min;

[0054] Step f, cooling the liquid substance in step e to a temperature of 90-95°C, ...

Embodiment 1

[0058] A kind of solid-state flux used for stainless steel soldering, the raw material formula components are as follows:

[0059]

[0060] Configuration method: Weigh N, N-diethylethanolamine and zinc fluoride according to the above ratio and stir evenly in the corrosion-resistant reaction kettle, slowly add the weighed 40%wt concentration of fluoboric acid into the reaction kettle drop by drop place in the reactor for 24 hours until the reaction is complete; heat the above reaction solution to 145°C to fully remove the water, and wait to cool to obtain a solid active mixture; then heat the above solid mixture to 110°C in the reactor, and then add benzotriazepam Add azoles into the above liquid, continue to stir for 20 minutes, add the above ratio of polyethylene oxide 100,000 carrier when the temperature of the liquid flux drops to 90°C, continue to stir until the mixture is uniform, and cool to room temperature to obtain a flux for stainless steel. Solid flux for brazing...

Embodiment 2

[0062] A kind of solid-state flux used for stainless steel soldering, the raw material formula components are as follows:

[0063]

[0064] Configuration method: weigh hydroxylamine, tetrahydroxyethyldiamine, and zinc oxide according to the above ratio and stir evenly in the corrosion-resistant reaction kettle, and slowly add the weighed 40% hydrofluoric acid into the reaction kettle drop by drop , place it for 24 hours until the reaction is complete; heat the above reaction solution to 140°C to fully remove the water, and wait to cool to obtain a solid active mixture; then heat the above solid mixture to 105°C in the reactor, and then add triazole corrosion inhibitors Add the flux into the above-mentioned liquid, continue to stir for 15 minutes, add the polyethylene glycol 8000 carrier of the above ratio when the temperature of the liquid flux drops to 90°C, continue to stir until the mixture is uniform, and cool to room temperature to obtain a Solid flux for stainless ste...

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Abstract

The invention discloses solid state scaling powder for stainless steel soldering and a preparing method. The solid state scaling powder comprises 0-68.5% of organic cosolvent, 0-19.8% of a metal active agent, 0-39.8% of an acids active agent, 0.1-0.8% of inhibiter and the balance is an organic vehicle. The preparing method comprises the steps that firstly, according to the weight ratio, the organic cosolvent and the metal active agent are mixed and stirred; secondly, the acids active agent is added into a solution disposed in the first step, standing is carried out on the solution for 24 hours. The solid state scaling powder for stainless steel soldering and the preparing method can be applied to the field of scaling powder, the problem that the welding performance is unstable can be effectively solved, and the problems that the spreading condition of soldering materials is poor, and the spreading rate is low can be effectively solved.

Description

technical field [0001] The invention relates to the field of flux, in particular to a solid flux used for stainless steel soldering and a preparation method. Background technique [0002] The American Welding Society (AWS) stipulates that brazing with a solder liquidus temperature higher than 450°C is brazing, and brazing at a temperature lower than 450°C is soft brazing. Soldering mainly relies on the wetting of the base metal by the solder to form the joint. Soft soldering is a low-temperature welding process. Compared with hard soldering, it has the following characteristics: (1) Soft soldering can be brazed with ordinary heat sources such as soldering irons and blowtorches, and is easy to operate; (2) The heating temperature is low, and the base metal There is little change in the structure and properties, and the welded parts can be welded in any way, and the possible expansion, strength change and deformation are small; (3) The brazing productivity is high, and dozens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/363B23K35/40
CPCB23K35/3612B23K35/362B23K35/40
Inventor 黄守友叶桥生黄义荣林东花彭丽周文军李章辉秦雪莲
Owner THOUSAND ISLAND METAL FOIL
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