CN108941971A - One kind aqueous tin cream free of cleaning and preparation method thereof - Google Patents
One kind aqueous tin cream free of cleaning and preparation method thereof Download PDFInfo
- Publication number
- CN108941971A CN108941971A CN201810935128.5A CN201810935128A CN108941971A CN 108941971 A CN108941971 A CN 108941971A CN 201810935128 A CN201810935128 A CN 201810935128A CN 108941971 A CN108941971 A CN 108941971A
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- Prior art keywords
- tin cream
- cleaning
- aqueous
- free
- lotion
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of aqueous tin creams free of cleaning and preparation method thereof, are related to the welding technology field of bellows-type pressure temperature controller.The aqueous tin cream free of cleaning is used for the weld job of bellows-type pressure temperature controller, and it is mainly made of the raw material of following mass percent: 88~92% alloy welding powder；8~12% lotion solder flux；Wherein, alloy welding powder includes the first component and the second component, first group of main body welding powder being divided into containing Sn, Ag and Cu, second group of two or more being selected from SnP, SnGa, SnNi, SnCe, SnGd, SnNd and SnPr alloy powder；Lotion solder flux includes activating agent, corrosion inhibiter, aqueous at lotion, rheological agent and solvent.Aqueous tin cream free of cleaning of the invention have the characteristics that high reliablity, postwelding residual less, the corrosion of free of cleaning, flux vapors butt-welding fitting it is small, can be adapted for the welding of bellows-type pressure temperature controller.
Description
Technical field
The present invention relates to the welding technology fields of bellows-type pressure temperature controller, and in particular to a kind of aqueous tin cream free of cleaning
And preparation method thereof.
Background technique
Bellows-type pressure temperature controller is a very important core component in household appliances, not with temperature controller product
Break and develop to micromation, high-performance, multipurpose direction, the requirement to welding assembly is also increasingly stringenter.Bellows-type pressure temperature control
Bellows and capillary inside device need to weld connection, due to the high-frequency switch triggering in use process, it is desirable that bellows and capillary
The welding of pipe has excellent reliability, and due to the particularity of its structure, at present generally using tin cream to bellows and capillary
It is welded.
Traditional tin cream is generally oiliness tin cream, due to largely using rosin and resinae as flux constituent, postwelding residual
It is more serious, bottom plate is caused to corrode.The solder joint of bellows-type pressure temperature controller is in the confined space of bellows, but traditional tin cream
Solder flux corrosivity it is stronger, welding process generate flux vapors rest in bellows, heavy corrosion bellows.Bottom plate and bellows
The stability of corrosion meeting extreme influence temperature controller, causes gas leakage, reliability substantially reduces when serious.
Summary of the invention
The purpose of the present invention is to provide a kind of aqueous tin cream free of cleaning, this aqueous tin cream free of cleaning overcomes common tin cream
Existing defect when bellows-type pressure temperature controller is welded, there is high reliablity, postwelding to remain less, is free of cleaning, flux vapors corrosion
The features such as small.
Another object of the present invention is to provide a kind of preparation method of aqueous tin cream free of cleaning, this method simple possible,
High reliablity can be prepared, postwelding remains less, free of cleaning, flux vapors corrode small aqueous tin cream free of cleaning.
The present invention solves its technical problem and adopts the following technical solutions to realize.
The present invention proposes a kind of aqueous tin cream free of cleaning, for the weld job of bellows-type pressure temperature controller, mainly by
The raw material of following mass percent is made:
88~92% alloy welding powder；
8~12% lotion solder flux；
Wherein, alloy welding powder includes the first component and the second component, first group of main body weldering being divided into containing Sn, Ag and Cu
Powder, second group of two or more being selected from SnP, SnGa, SnNi, SnCe, SnGd, SnNd and SnPr alloy powder；
Lotion solder flux includes activating agent, corrosion inhibiter, aqueous at lotion, rheological agent and solvent.
The present invention proposes a kind of preparation method of above-mentioned aqueous tin cream free of cleaning, comprising:
Activating agent, solvent, corrosion inhibiter are added in a mixing bowl and are stirred evenly, and circulator bath is warming up to 80 DEG C；
Constant temperature sequentially add rheological agent and it is aqueous at be again stirring for after lotion uniformly；
Hydrologic cycle cooling system is cooled to room temperature, and is vacuumized under closed environment after alloy welding powder is added, and with
It is free of cleaning aqueous to be obtained after the mixing speed stirring 25min of 50rad/min after the mixing speed stirring 10min of 20rad/min
Tin cream.
The beneficial effect of the aqueous tin cream free of cleaning of the offer of the embodiment of the present invention and preparation method thereof is:
The aqueous tin cream free of cleaning that the embodiment of the present invention provides is mainly used for the weld job of bellows-type pressure temperature controller,
The aqueous tin cream free of cleaning have many advantages, such as high reliablity, postwelding residual less, the corrosion of free of cleaning, flux vapors butt-welding fitting it is small.
Specifically, by adding other microalloy powder, the alloy powder containing lanthanide series, energy are especially added to
So that solder is formed new alloy phase, while making crystal structure finer and smoother neat, the toughness and stretch-proof of solder is greatly improved
Intensity, to improve the weld strength of solder.
Specifically, common tin cream is because of a large amount of postweldings residuals caused by largely using rosin and resinae at lotion, to avoid this
Defect, the present invention is at polyethylene glycol or stearic acid is selected on lotion, the component is with water-soluble, good at cream, postwelding is residual
The advantages that staying less, be small, without cleaning to ground corrosivity.
Therefore, the characteristics of forming sealing space for the bellows postwelding of bellows-type pressure temperature controller, to avoid solder flux from steaming
Vapour causes to corrode to bellows, influences the service life of product, and in the selection of flux composition component, having evaded component steam has
The component of strong corrosive has selected alcohols, ethers, amine or ammonium salt as the main constituent component of lotion solder flux, these components
A part of (such as alcohols and ethers) is corrosion-free component, and a part of (such as part amine and ammonium salt) has been decomposed into welding temperature
The component of non-corrosive gas, or resolve into and can greatly reduce the corruption of flux vapors with the gas of organic acid reaction or neutralization
Corrosion.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
Aqueous tin cream free of cleaning of the embodiment of the present invention and preparation method thereof is specifically described below.
The embodiment provides a kind of aqueous tin cream free of cleaning, the welding for bellows-type pressure temperature controller is made
Industry is mainly made of the raw material of following mass percent:
88~92% alloy welding powder；
8~12% lotion solder flux；
Wherein, alloy welding powder includes the first component and the second component, first group of main body weldering being divided into containing Sn, Ag and Cu
Powder, second group of two or more being selected from SnP, SnGa, SnNi, SnCe, SnGd, SnNd and SnPr alloy powder.
In detail, in an embodiment of the present invention, alloy welding powder include according to mass percent meter 96~99%
One component and 1~4% the second component.That is, in an embodiment of the present invention, alloy welding powder includes according to weight percent
96~99% main body welding powder containing Sn, Ag and Cu of meter and 1~4% SnP, SnGa, SnNi, SnCe, SnGd, SnNd
And two or more in SnPr alloy powder.By adding other microalloy powder, especially it is added to containing group of the lanthanides
The alloy powder of element can make solder form new alloy phase, while make crystal structure finer and smoother neat, and pricker is greatly improved
The toughness and tensile strength of material, to improve the weld strength of solder.
Also, as a preferred option, in an embodiment of the present invention, at least 90% in the grain diameter of alloy welding powder
Grain diameter is between 15~25 μm, and the largest particles partial size is no more than 28 μm.The particle diameter for controlling alloy welding powder is advantageous
In raising welding quality.Certainly, in other embodiments of the invention, the partial size of alloy welding powder can also be selected according to demand
It selects, the embodiment of the present invention is without limitation.
Wherein, lotion solder flux include activating agent, it is corrosion inhibiter, aqueous at lotion, rheological agent and solvent.
In detail, lotion solder flux include according to mass percent meter 1~7% activating agent, 0.05~0.35% it is slow
Lose agent, 50~60% it is aqueous at lotion, 2~4% rheological agent and 30~45% solvent.For bellows-type pressure temperature control
The characteristics of bellows postwelding of device forms sealing space, to avoid flux vapors from causing to corrode to bellows, influences the use of product
Service life, in the selection of flux composition component, evaded component steam have strong corrosive component, selected alcohols, ethers,
As the main constituent component of lotion solder flux, these components a part (such as alcohols and ethers) is corrosion-free group for amine or ammonium salt
Point, a part of (such as part amine and ammonium salt) has been decomposed into the component of non-corrosive gas in welding temperature, or resolves into
The corrosivity of flux vapors can be greatly reduced with the gas of organic acid reaction or neutralization.
Specifically, activating agent is selected from succinic acid, adipic acid, sebacic acid, citric acid, DL-malic acid, triammonium citrate, neighbour
Phthalic acid, triethanolamine, dimethylolpropionic acid and any three kinds or a variety of of dihydromethyl propionic acid.
Any two kinds in triazole, benzotriazole, imidazoline quaternary ammonium salt and oily acid based imidazolines of corrosion inhibiter
Or it is a variety of.
Aqueous one at lotion in polyethylene glycol 2000, Macrogol 4000, Macrogol 6000 and stearic acid
It plants, two or more.
Rheological agent is selected from polyamide wax, n,N-Dimethylformamide, ricinoleic acid sulfuric ester sodium salt and ethylene glycol-butyl ether
Any one of, two or more.
Solvent be selected from diethylene glycol list octyl ether, triethylene glycol butyl ether, diethylene glycol monohexyl ether, triethyl group carbitol ether,
Any three kinds or a variety of in 2- ethyl -1,3- hexylene glycol and 3- ethyl -2,6- pentanediol.
The embodiments of the present invention also provide a kind of preparation methods of aqueous tin cream free of cleaning stated, comprising:
Activating agent, solvent, corrosion inhibiter are added in a mixing bowl and are stirred evenly, and circulator bath is warming up to 80 DEG C；
Constant temperature sequentially add rheological agent and it is aqueous at be again stirring for after lotion uniformly；
Hydrologic cycle cooling system is cooled to room temperature, and is vacuumized under closed environment after alloy welding powder is added, and with
It is free of cleaning aqueous to be obtained after the mixing speed stirring 25min of 50rad/min after the mixing speed stirring 10min of 20rad/min
Tin cream.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of aqueous tin cream free of cleaning is present embodiments provided, mainly according to quality hundred as shown in following table 1
The raw material of score meter is made:
Table 1
Also, preparation method is as follows:
(1) raw material is got out by above-mentioned mass percent；
(2) prepared activating agent, solvent, corrosion inhibiter are added in a mixing bowl and are stirred until homogeneous, circulator bath heating adds
Enter rheological agent and at lotion, stirs evenly；
(3) hydrologic cycle cooling system is cooling, and alloy welding powder is added, closed to vacuumize, and sets 20rad/ for mixing speed
Min is stirred 10 minutes, then is set 50rad/min for mixing speed and stirred 25 minutes；Stopping stirs to get tin cream.
Embodiment 2
A kind of aqueous tin cream free of cleaning, the area of the aqueous tin cream free of cleaning provided with embodiment 1 are be provided
It is not, which is mainly made shown in following table 2 according to the raw material of mass percentage:
Table 2
Embodiment 3
A kind of aqueous tin cream free of cleaning, the area of the aqueous tin cream free of cleaning provided with embodiment 1 are be provided
It is not, which is mainly made shown in following table 3 according to the raw material of mass percentage:
Table 3
Embodiment 4
A kind of aqueous tin cream free of cleaning, the area of the aqueous tin cream free of cleaning provided with embodiment 1 are be provided
It is not, which is mainly made shown in following table 4 according to the raw material of mass percentage:
Table 4
Embodiment 5
A kind of aqueous tin cream free of cleaning, the area of the aqueous tin cream free of cleaning provided with embodiment 1 are be provided
It is not, which is mainly made shown in following table 5 according to the raw material of mass percentage:
Table 5
Comparative example 1
Comparative example 1 be by WQ-105 series leadless tin cream provided by Guangdong Province's welding technique research, as contain rosin or
Resin quasi-tradition tin cream, the aqueous tin cream free of cleaning provided with the embodiment of the present invention 1 to 5 compare.
Comparative example 2
Certain domestic institute of manufacturer business men tin cream.
It is welded using the tin cream that embodiment 1-5 and comparative example 1-2 is provided to auxiliary film type pressure temperature controller, test weldering
Disqualification rate, residual corrosion and the bellows corrosion of bellows-type pressure temperature controller are connect, to evaluate the welding effect of tin cream.As a result such as table
Shown in 6.
6 temperature controller of table welds test result
By upper table result it is found that the aqueous tin cream free of cleaning that the embodiment of the present invention provides is used for the temperature controller diaphragm capsule and hair
The temperature controller disqualification rate of the welding of tubule, welding is low, and postwelding residual is few, and flux vapors are corrosion-free to bellows.
And what comparative example 1 used contains rosin or resin quasi-tradition tin cream, because containing rosin and resin component in lotion solder flux,
The characteristics of causing postwelding residual more serious, not also being directed to bellows-type pressure temperature controller in lotion solder flux progress component is preferred, leads
It causes postwelding flux vapors to corrode bellows more serious, while being also the higher reason of its leak rate, comparative example 2 also has comparison
Disadvantage in example 1.
In conclusion the aqueous tin cream free of cleaning of the embodiment of the present invention overcomes common tin cream welding bellows-type pressure temperature control
Existing defect when device, have the characteristics that high reliablity, postwelding residual less, the corrosion of free of cleaning, flux vapors it is small.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of aqueous tin cream free of cleaning, the weld job for bellows-type pressure temperature controller, which is characterized in that its mainly by with
The raw material of lower mass percent is made:
88~92% alloy welding powder；
8~12% lotion solder flux；
Wherein, the alloy welding powder includes the first component and the second component, and described first group is divided into the main body containing Sn, Ag and Cu
Welding powder, described second group two kinds be selected from SnP, SnGa, SnNi, SnCe, SnGd, SnNd and SnPr alloy powder or more
Kind；
The lotion solder flux includes activating agent, corrosion inhibiter, aqueous at lotion, rheological agent and solvent.
2. aqueous tin cream free of cleaning according to claim 1, it is characterised in that:
The alloy welding powder includes described in first component and 1~4% according to the 96~99% of mass percent meter
Second component.
3. aqueous tin cream free of cleaning according to claim 2, it is characterised in that:
At least 90% grain diameter is between 15~25 μm in the grain diameter of the alloy welding powder, and the largest particles partial size
No more than 28 μm.
4. aqueous tin cream free of cleaning according to any one of claim 1 to 3, it is characterised in that:
The lotion solder flux include according to mass percent meter 1~7% activating agent, 0.05~0.35% corrosion inhibiter, 50
~60% it is aqueous at lotion, 2~4% rheological agent and 30~45% solvent.
5. aqueous tin cream free of cleaning according to claim 4, it is characterised in that:
The activating agent is selected from succinic acid, adipic acid, sebacic acid, citric acid, DL-malic acid, triammonium citrate, O-phthalic
Acid, triethanolamine, dimethylolpropionic acid and any three kinds or a variety of of dihydromethyl propionic acid.
6. aqueous tin cream free of cleaning according to claim 5, it is characterised in that:
Any two kinds in triazole, benzotriazole, imidazoline quaternary ammonium salt and oily acid based imidazolines of the corrosion inhibiter
Or it is a variety of.
7. aqueous tin cream free of cleaning according to claim 5 or 6, it is characterised in that:
Aqueous one at lotion in polyethylene glycol 2000, Macrogol 4000, Macrogol 6000 and stearic acid
It plants, two or more.
8. aqueous tin cream free of cleaning according to claim 7, it is characterised in that:
The rheological agent is selected from polyamide wax, n,N-Dimethylformamide, ricinoleic acid sulfuric ester sodium salt and ethylene glycol-butyl ether
Any one of, two or more.
9. aqueous tin cream free of cleaning according to claim 8, it is characterised in that:
The solvent be selected from diethylene glycol list octyl ether, triethylene glycol butyl ether, diethylene glycol monohexyl ether, triethyl group carbitol ether,
Any three kinds or a variety of in 2- ethyl -1,3- hexylene glycol and 3- ethyl -2,6- pentanediol.
10. a kind of preparation method of aqueous tin cream free of cleaning as claimed in any one of claims 1-9 wherein, which is characterized in that packet
It includes:
It will be stirred evenly in the activating agent, the solvent, the corrosion inhibiter and addition a mixing bowl, and circulator bath is warming up to
80℃；
Constant temperature sequentially add the rheological agent and it is described it is aqueous at be again stirring for after lotion uniformly；
Hydrologic cycle cooling system is cooled to room temperature, and is vacuumized under closed environment after the alloy welding powder is added, and with
It is described free of cleaning to be obtained after the mixing speed stirring 25min of 50rad/min after the mixing speed stirring 10min of 20rad/min
Aqueous tin cream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810935128.5A CN108941971B (en) | 2018-08-16 | 2018-08-16 | Cleaning-free water-based solder paste and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810935128.5A CN108941971B (en) | 2018-08-16 | 2018-08-16 | Cleaning-free water-based solder paste and preparation method thereof |
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| CN108941971A true CN108941971A (en) | 2018-12-07 |
| CN108941971B CN108941971B (en) | 2020-12-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730243A (en) * | 2020-07-02 | 2020-10-02 | 东莞市硕美电子材料科技有限公司 | Water-soluble flux composition for hot air leveling |
| US20220009042A1 (en) * | 2019-01-24 | 2022-01-13 | Koki Company Limited | Flux and solder paste |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220009042A1 (en) * | 2019-01-24 | 2022-01-13 | Koki Company Limited | Flux and solder paste |
| US11975411B2 (en) * | 2019-01-24 | 2024-05-07 | Koki Company Limited | Flux and solder paste |
| CN111730243A (en) * | 2020-07-02 | 2020-10-02 | 东莞市硕美电子材料科技有限公司 | Water-soluble flux composition for hot air leveling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108941971B (en) | 2020-12-18 |
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Effective date of registration: 20211130 Address after: 510000 room 09, room 2304, No. 1068, Xingang East Road, Haizhu District, Guangzhou City, Guangdong Province (office only) Patentee after: Guangzhou Zhongwu Welding Material Technology Co.,Ltd. Address before: 510000 courtyard, no.363, Changxing Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: China Uzbekistan Welding Research Institute, Guangdong Academy of Sciences |