CN110524140B - Oily soldering flux for cast-weld of lead-acid storage battery and preparation method thereof - Google Patents
Oily soldering flux for cast-weld of lead-acid storage battery and preparation method thereof Download PDFInfo
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- CN110524140B CN110524140B CN201910734049.2A CN201910734049A CN110524140B CN 110524140 B CN110524140 B CN 110524140B CN 201910734049 A CN201910734049 A CN 201910734049A CN 110524140 B CN110524140 B CN 110524140B
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- acid
- lead
- cast
- storage battery
- oily
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Classifications
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- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3612—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with organic compounds as principal constituents
-
- 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)
- Nonmetallic Welding Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses an oily scaling powder for lead-acid storage battery cast-weld and a preparation method thereof, wherein the oily scaling powder for lead-acid storage battery cast-weld is prepared from the following raw materials in percentage by weight: 75-81% of ethylene glycol, 6-12% of oxalic acid and the balance of polymerized phosphoric acid. The above-mentioned scheme that this application provided, oxalic acid can keep reducibility, get rid of and weld material surface oxide layer, oxalic acid is as organic acid simultaneously, but the surface lead layer of soluble alloy, make the surface lead layer not smooth, and then be favorable to fusing with the contact of lead liquid, the polymerized phosphoric acid is not volatile under high temperature, and then guaranteed when the cast joint, conveniently get rid of lead liquid surface tension, improve welding quality, reduce virtual false welding and package welding, when the cast joint finishes, the organic matter volatilizees under high temperature and decomposes, the residue is few, there is not halogen to remain the corrosion mould, thereby the cast joint quality has been improved.
Description
Technical Field
The invention relates to the technical field of welding, in particular to an oily soldering flux for lead-acid storage battery cast welding and a preparation method thereof.
Background
At present, in the cast-weld process of lead-acid storage batteries, most of lead-acid storage battery manufacturers in China generally use water-based soldering flux. By adopting the water-based soldering flux, although the oxide layer on the surface of the base metal can be reduced by the inorganic acid to destroy the surface tension of fluid during cast welding, the water-based soldering flux contains halogen elements, so that a mold can be corroded, halogen remains in a weldment and is oxidized into a strong-oxidizing and strong-corrosive substance by an electrode, and the service life of a battery can be further shortened.
Disclosure of Invention
In order to solve the problems, the invention provides the oily soldering flux for the cast welding of the lead-acid storage battery, which can simultaneously achieve low corrosivity, low residue and good welding bonding force, and the preparation method thereof.
The invention provides an oily soldering flux for lead-acid storage battery cast welding, which is prepared from the following raw materials in percentage by weight: 75-81% of ethylene glycol, 6-12% of oxalic acid and the balance of polymerized phosphoric acid.
Further, the oily scaling powder for cast welding of the lead-acid storage battery is prepared from the following raw materials in percentage by weight: 77-79% of ethylene glycol, 8-10% of oxalic acid and the balance of polymeric phosphoric acid.
The invention also discloses a preparation method of the oily soldering flux for cast welding of the lead-acid storage battery, which is based on any one of the soldering fluxes described in the embodiments of the application and comprises the following steps:
s1, mixing and stirring the glycol and the oxalic acid with the specific gravity until the glycol and the oxalic acid are completely dissolved to obtain a solution A;
s2, stirring the polymerized phosphoric acid with the specific gravity in an environment with the temperature of 250-350 ℃ to obtain molten polymerized phosphoric acid B;
s3, mixing and stirring the solution A obtained in the step S1 and the molten polymerized phosphoric acid B obtained in the step S2 uniformly to obtain the compound.
Further, in step S1, the ethylene glycol and oxalic acid are mixed and stirred for 15min to obtain solution a.
Further, in step S2, the polyphosphoric acid is stirred for 30min in an environment with a temperature of 250 to 350 ℃ to obtain molten polyphosphoric acid B.
Further, in step S3, the solution a obtained in step S1 and the molten polymerized phosphoric acid B obtained in step S2 are mixed and stirred for 30min to be uniform.
According to the oily soldering flux for cast welding of the lead-acid storage battery, the oily soldering flux comprises glycol, oxalic acid and polyphosphoric acid, wherein the oxalic acid can keep reducibility, an oxide layer on the surface of a welding material is removed, meanwhile, the oxalic acid is used as organic acid and can dissolve a lead layer on the surface of an alloy, so that the lead layer on the surface is not smooth and is beneficial to contact and fusion with lead liquid, and the polyphosphoric acid is not volatile at high temperature, so that the surface tension of the lead liquid is conveniently removed during cast welding, the welding quality is improved, pseudo-welding and ladle welding are reduced, when the cast welding is finished, organic matters are volatile and decomposed at high temperature, residues are few, no halogen remains corrode a mold, and the cast welding quality is improved.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification are for the purpose of clearly describing one embodiment only and are not meant to be necessarily order unless otherwise indicated where a certain order must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
Example one
The invention provides an oily scaling powder for lead-acid storage battery cast welding, which is prepared from the following raw materials in percentage by weight: 75% of ethylene glycol, 6% of oxalic acid and the balance of polymeric phosphoric acid.
The preparation method comprises the following steps:
s1, mixing and stirring the glycol and the oxalic acid with the specific gravity until the glycol and the oxalic acid are completely dissolved to obtain a solution A;
s2, stirring the polymerized phosphoric acid with the specific gravity in an environment with the temperature of 250 ℃ to obtain molten polymerized phosphoric acid B;
s3, mixing and stirring the solution A obtained in the step S1 and the molten polymerized phosphoric acid B obtained in the step S2 uniformly to obtain the compound.
Example two
The invention provides an oily scaling powder for lead-acid storage battery cast welding, which is prepared from the following raw materials in percentage by weight: 81% of ethylene glycol, 12% of oxalic acid and the balance of polymeric phosphoric acid.
The preparation method comprises the following steps:
s1, mixing and stirring the glycol and the oxalic acid with the specific gravity until the glycol and the oxalic acid are completely dissolved to obtain a solution A;
s2, stirring the polymerized phosphoric acid with the specific gravity in an environment with the temperature of 350 ℃ to obtain molten polymerized phosphoric acid B;
s3, mixing and stirring the solution A obtained in the step S1 and the molten polymerized phosphoric acid B obtained in the step S2 uniformly to obtain the compound.
EXAMPLE III
The invention provides an oily scaling powder for lead-acid storage battery cast welding, which is prepared from the following raw materials in percentage by weight: 78% of ethylene glycol, 9% of oxalic acid and the balance of polymeric phosphoric acid.
The preparation method comprises the following steps:
s1, mixing and stirring the glycol and the oxalic acid with the specific gravity until the glycol and the oxalic acid are completely dissolved to obtain a solution A;
s2, stirring the polymerized phosphoric acid with the specific gravity in an environment with the temperature of 300 ℃ to obtain molten polymerized phosphoric acid B;
s3, mixing and stirring the solution A obtained in the step S1 and the molten polymerized phosphoric acid B obtained in the step S2 uniformly to obtain the compound.
Above-mentioned embodiment oxalic acid can keep reducibility, get rid of and weld material surface oxide layer, oxalic acid is as organic acid simultaneously, but the surperficial lead layer of soluble alloy, make surperficial lead layer not smooth, and then be favorable to fusing with the contact of lead liquid, the polyphosphoric acid is not volatile under high temperature, and then guaranteed when cast joint, conveniently get rid of lead liquid surface tension, improve welding quality, reduce false welding and ladle welding, when cast joint finishes, the organic matter volatilizees under the high temperature and decomposes, the residue is few, there is not halogen residue corrosion mould, thereby cast joint quality has been improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (6)
1. The oily scaling powder for lead-acid storage battery cast welding is characterized by being prepared from the following raw materials in percentage by weight: 75-81% of ethylene glycol, 6-12% of oxalic acid and the balance of polymerized phosphoric acid.
2. The oily scaling powder for lead-acid storage battery cast welding is characterized by being prepared from the following raw materials in percentage by weight: 77-79% of ethylene glycol, 8-10% of oxalic acid and the balance of polymeric phosphoric acid.
3. A preparation method of an oily soldering flux for cast welding of a lead-acid storage battery is characterized in that the method is based on the soldering flux of any one of claims 1-2 and comprises the following steps:
s1, mixing and stirring the glycol and the oxalic acid with the specific gravity until the glycol and the oxalic acid are completely dissolved to obtain a solution A;
s2, stirring the polymerized phosphoric acid with the specific gravity in an environment with the temperature of 250-350 ℃ to obtain molten polymerized phosphoric acid B;
s3, mixing and stirring the solution A obtained in the step S1 and the molten polymerized phosphoric acid B obtained in the step S2 uniformly to obtain the compound.
4. The method for preparing the oil-based flux for cast-weld of the lead-acid storage battery according to claim 3, wherein,
in step S1, the ethylene glycol and oxalic acid are mixed and stirred for 15min to obtain solution a.
5. The method for preparing the oil-based flux for cast-weld of the lead-acid storage battery according to claim 3, wherein,
in step S2, the polyphosphoric acid is stirred for 30min in an environment with a temperature of 250-350 ℃ to obtain molten polyphosphoric acid B.
6. The method for preparing the oil-based flux for cast-weld of the lead-acid storage battery according to claim 3, wherein,
in step S3, the solution A obtained in step S1 and the molten polymerized phosphoric acid B obtained in step S2 are mixed and stirred for 30min to be uniform, and the product is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734049.2A CN110524140B (en) | 2019-08-09 | 2019-08-09 | Oily soldering flux for cast-weld of lead-acid storage battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734049.2A CN110524140B (en) | 2019-08-09 | 2019-08-09 | Oily soldering flux for cast-weld of lead-acid storage battery and preparation method thereof |
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| CN110524140A CN110524140A (en) | 2019-12-03 |
| CN110524140B true CN110524140B (en) | 2021-09-28 |
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Citations (3)
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| KR101128865B1 (en) * | 2010-10-01 | 2012-03-26 | 에이케이켐텍 주식회사 | Formulation of cleaner for removing residual flux after reflow and cleaning method by using it |
| CN102728817A (en) * | 2012-05-22 | 2012-10-17 | 山东圣阳电源科技有限公司 | Preparation method of soldering flux for cast welding of lead-calcium alloy polar plate grate of storage battery |
| CN109175789A (en) * | 2018-09-20 | 2019-01-11 | 湖北双登润阳新能源有限公司 | The aqueous formulations of solder flux of lead acid accumulator pole group automatic welding |
-
2019
- 2019-08-09 CN CN201910734049.2A patent/CN110524140B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101128865B1 (en) * | 2010-10-01 | 2012-03-26 | 에이케이켐텍 주식회사 | Formulation of cleaner for removing residual flux after reflow and cleaning method by using it |
| CN102728817A (en) * | 2012-05-22 | 2012-10-17 | 山东圣阳电源科技有限公司 | Preparation method of soldering flux for cast welding of lead-calcium alloy polar plate grate of storage battery |
| CN109175789A (en) * | 2018-09-20 | 2019-01-11 | 湖北双登润阳新能源有限公司 | The aqueous formulations of solder flux of lead acid accumulator pole group automatic welding |
Non-Patent Citations (3)
| Title |
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| 国外软钎焊助焊剂综述;李昭昭等;《电子工艺技术》;19841231(第12期);第2-9页 * |
| 无铅焊料用无卤素助焊剂的研究;乐燕群;《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》;20110215(第2期);第11-14页 * |
| 电子组装中助焊剂的选择;史建卫等;《电子工艺技术》;20090531;第30卷(第3期);第181-184页 * |
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