CN104625481A - Protective agent for welding spot in metal welding - Google Patents
Protective agent for welding spot in metal welding Download PDFInfo
- Publication number
- CN104625481A CN104625481A CN201410845830.4A CN201410845830A CN104625481A CN 104625481 A CN104625481 A CN 104625481A CN 201410845830 A CN201410845830 A CN 201410845830A CN 104625481 A CN104625481 A CN 104625481A
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- parts
- welding
- protective agent
- metal
- cold
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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
- B23K35/362—Selection of compositions of fluxes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a protective agent for a welding spot in metal welding and belongs to the field of metal plate processing. The protective agent comprises, by mass, 1.5-2.3 parts of dioctyl phthalate, 2-5 parts of sodium pyrophosphate, 1-3 parts of para-toluenesulfonic acid, 3-6 parts of strontium hydroxide, 3-5 parts of polydimethylsiloxane, 2-4 parts of benzotriazole, 3-8 parts of zeolite, 5-7 parts of sodium hypophosphite, 5-9 parts of sodium alginate, 0.3-0.8 part of diazolidinyl urea, 2-6 parts of stearic acid and 100 parts of deionized water. According to the protective agent for the welding spot in metal welding, the protection effect on the welding spot on a cold rolling plate is good, a protection layer can be formed on the surface of the cold rolling plate, and the cold rolling plate is prevented from beginning to be oxidized and corroded with the welding spot as the center after spot welding is conducted.
Description
Technical field
The present invention relates to panel beating process field, specifically, relate to the protective agent of solder joint during a kind of metal solder.
Background technology
Sheet metal process in general basic equipment comprises plate shearing machine, numerical control press/laser, plasma, water jet cutting machine, bender and various auxiliary equipment as uncoiler, levelling machine, flash trimmer, mash welder etc.Usually, most important four steps of sheet metal process are cut, rush/cut, roll over, welding, surface treatment etc.But traditional sheet metal process is all only consider physical property impact, do not consider chemical reaction, especially when carrying out spot welding to sheet metal, a large amount of solder joints can be formed at surface of the work, and these solder joints are spray paint to get over mostly, but these solder joints can become following Corrosion Potential, and especially for common cold-reduced sheet, cold-reduced sheet refers to that steel ingot becomes steel plate coiled strip or the sheet stock of required thickness through cold-rolling mill continuous rolling.Cold-reduced sheet surface without any protection, exposes very easily oxidized in atmosphere, particularly in a humid environment oxidation rate quickening; there is bolarious iron rust; surface will be sprayed paint, be electroplated or other protection in use, but only sprays paint, and very difficult butt welding point is protected.
How better the existing research direction about spot welding is all concentrate in welding, seldom relate to the protection after welding, such as China Patent No.: 201110303373, denomination of invention is: spot welding method and spot-welding equipment, a kind of spot welding method of this disclosure of the invention and a kind of spot-welding equipment, the stack assemblies formed by least three workpiece is clamped between the first and second soldering tips, the internal workpiece shown in stack assemblies in two workpiece of Maximum Contact impedance in workpiece be electrically connected to earth electrode or electrode, described internal workpiece is positioned at the inside of stack assemblies, described electrode has the polarity identical with described second soldering tip of the outside Workpiece fixing in described two workpiece in contiguous described workpiece, described outside workpiece and internal workpiece adjacent positioned from stack assemblies towards outside.Then, electric current is applied from the first soldering tip towards the second soldering tip.In this case, first, stack assemblies is pushed under the first thrust, and then stack assemblies is pushed under the second thrust being greater than the first thrust.But this invention is also how to improve spot-welding technology in research, does not relate to the problem how protecting solder joint, and more enterprise still sprays paint anticorrosion in dependence now.
Summary of the invention
the problem that 1, will solve
How research for the spot welding in existing panel beating is all keep in mind spot welding, how to improve welding efficiency and quality, seldom relate to the anticorrosion of solder joint, existing solder joint anticorrosion is all on concentrating on and spraying paint, but spray paint and not only there is the problem of contaminated environment, and there is the high problem of cost, the invention provides the protective agent of solder joint during a kind of metal solder, it adopts sodium pyrophosphate, p-methyl benzenesulfonic acid, strontium hydroxide, dimethyl silicone polymer, BTA, zeolite, inferior sodium phosphate, sodium alginate, two imidazolidinyl urea and stearic acid composition protective agent, well can protect the solder joint of sheet metal work, especially for cold-reduced sheet.
2, technical scheme
For solving the problem, the present invention adopts following technical scheme.
A protective agent for solder joint during metal solder, its composition and mass parts are:
Dioctyl phthalate 1.5-2.3 part;
Sodium pyrophosphate 2-5 part;
P-methyl benzenesulfonic acid 1-3 part;
Strontium hydroxide 3-6 part;
Dimethyl silicone polymer 3-5 part;
BTA 2-4 part;
Zeolite 3-8 part;
Inferior sodium phosphate 5-7 part;
Sodium alginate 5-9 part;
Two imidazolidinyl urea 0.3-0.8 part;
Stearic acid 2-6 part;
Deionized water 100 parts.
Preferably, its composition and mass parts are: dioctyl phthalate 2 parts;
Sodium pyrophosphate 3 parts;
P-methyl benzenesulfonic acid 2 parts;
Strontium hydroxide 4 parts;
Dimethyl silicone polymer 4 parts;
BTA 3 parts;
5 parts, zeolite;
Inferior sodium phosphate 6 parts;
Sodium alginate 6 parts;
Two imidazolidinyl urea 0.5 part;
Stearic acid 4 parts;
Deionized water 100 parts.
The application when metal solder in tack-weld protection of p-methyl benzenesulfonic acid or BTA or two imidazolidinyl urea.
The application of solder joint protective agent in tack-weld protection during foregoing a kind of metal solder.
3, beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) the present invention adopts sodium pyrophosphate, p-methyl benzenesulfonic acid, strontium hydroxide, dimethyl silicone polymer, BTA, zeolite, inferior sodium phosphate, sodium alginate, two imidazolidinyl urea and stearic acid composition protective agent, solder joint on cold-reduced sheet well can be protected, a kind of overcoat can be formed on the surface of cold-reduced sheet, prevent cold-reduced sheet from centered by solder joint, starting oxidation, corrosion at a postwelding;
(2) cost of material of the present invention is low, energy repeated multiple times utilization, more environmental protection;
(3) the present invention's overcoat that can be formed on the surface of cold-reduced sheet is effective, and do not affect follow-up processing, the thickness of overcoat is only 0.01-0.03 mm, plays protective action to metal.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further.
embodiment 1
A protective agent for solder joint during metal solder, the composition of each material and mass parts are: (surface tension of dimethyl silicone polymer is 21.3 × 10 for dioctyl phthalate 2 parts, sodium pyrophosphate 3 parts, p-methyl benzenesulfonic acid 2 parts, strontium hydroxide 4 parts, dimethyl silicone polymer
-3nm
-1, viscosity is 20000cP 25 ° time) and 4 parts, BTA 3 parts, 5 parts, zeolite, inferior sodium phosphate 6 parts, sodium alginate 6 parts, two imidazolidinyl urea 0.5 part, stearic acid 4 parts, deionized water 100 parts.
Its preparation method is:
1) weigh by mass fraction: the stearic acid of the BTA of the p-methyl benzenesulfonic acid of the sodium pyrophosphate of 3 mass parts, 2 mass parts, 3 mass parts, the inferior sodium phosphate of 6 mass parts and 4 mass parts is dissolved in 100 parts of deionized waters, stir 8 min, heat while stirring, be heated to 45 DEG C;
2) add the strontium hydroxide of 4 mass parts and the zeolite of 5 mass parts in the solution obtained in step 1), stir 10-15 min, in the process stirred, add the sodium alginate of 6 mass parts, solution is heated to 76 DEG C, is incubated 8 min;
3) by step 2) in add two imidazolidinyl ureas of the dimethyl silicone polymer of 4 mass parts, the dioctyl phthalate of 2 mass parts and 0.5 mass parts in the solution that obtains successively, stir while adding, two imidazolidinyl urea stirs 25 min after adding, and obtains the agent of metal welding point protection;
In order to explanation the present invention clearly, below using method is introduced.
4) 5-10 min is stirred in the metal welding point protection agent obtained in step 3);
5) cold-reduced sheet (thickness of cold-reduced sheet is 0.8 mm, material trademark: Q235A, and the quantity of tack-weld is 8) after spot welding processing is heated to 86 DEG C;
6) cold-reduced sheet in step 5) is put in the metal welding point protection agent in step 4), soak 60 s, dry cold-reduced sheet.
Find after salt mist experiment; cold-reduced sheet through protective agent process of the present invention improves 19% than the antiseptic power of the cold-reduced sheet through process of spraying paint; 290% is improved than the antiseptic power without the cold-reduced sheet of any process; and the place of treated cold-reduced sheet corrosion is not at first solder joint place; the present invention can improve the resistance to corrosion of cold-reduced sheet, especially can improve the resistance to corrosion of the joint of spot welding.
embodiment 2
With embodiment 1, difference is, the composition of each material and mass parts are: dioctyl phthalate 2.3 parts, sodium pyrophosphate 2 parts, p-methyl benzenesulfonic acid 3 parts, strontium hydroxide 3 parts, dimethyl silicone polymer 5 parts, BTA 2 parts, 8 parts, zeolite, inferior sodium phosphate 5 parts, sodium alginate 9 parts, two imidazolidinyl urea 0.3 part, stearic acid 6 parts, deionized water 100 parts.In preparation method:
Its preparation method is:
1) weigh by mass fraction: the stearic acid of the BTA of the p-methyl benzenesulfonic acid of the sodium pyrophosphate of 2 mass parts, 3 mass parts, 2 mass parts, the inferior sodium phosphate of 5 mass parts and 6 mass parts is dissolved in 100 parts of deionized waters, stir 10 min, heat while stirring, be heated to 40 DEG C;
2) add the strontium hydroxide of 3 mass parts and the zeolite of 8 mass parts in the solution obtained in step 1), stir 10 min, in the process stirred, add the sodium alginate of 9 mass parts, solution is heated to 70 DEG C, is incubated 10 min;
3) by step 2) in add two imidazolidinyl ureas of the dimethyl silicone polymer of 5 mass parts, the dioctyl phthalate of 2.3 mass parts and 0.3 mass parts in the solution that obtains successively, stir while adding, two imidazolidinyl urea stirs 20 min after adding, and obtains the agent of metal welding point protection;
In order to explanation the present invention clearly, below using method is introduced.
4) 5 min are stirred in the metal welding point protection agent obtained in step 3);
5) cold-reduced sheet (thickness of cold-reduced sheet is 1.2 mm, material trademark: Q195A, and the quantity of tack-weld is 10) after spot welding processing is heated to 90 DEG C;
6) cold-reduced sheet in step 5) is put in the metal welding point protection agent in step 4), soak 40 s, dry cold-reduced sheet.
Find after salt mist experiment; cold-reduced sheet through protective agent process of the present invention improves 16% than the antiseptic power of the cold-reduced sheet through process of spraying paint; 285% is improved than the antiseptic power without the cold-reduced sheet of any process; and the place of treated cold-reduced sheet corrosion is not at first solder joint place; the present invention can improve the resistance to corrosion of cold-reduced sheet, especially can improve the resistance to corrosion of the joint of spot welding.
embodiment 3
With embodiment 1, difference is, the composition of each material and mass parts are: dioctyl phthalate 1.5 parts, sodium pyrophosphate 5 parts, p-methyl benzenesulfonic acid 1 part, strontium hydroxide 6 parts, dimethyl silicone polymer 3 parts, BTA 4 parts, 3 parts, zeolite, inferior sodium phosphate 7 parts, sodium alginate 5 parts, two imidazolidinyl urea 0.8 part, stearic acid 2 parts, deionized water 100 parts.In preparation method:
Its preparation method is:
1) weigh by mass fraction: the stearic acid of the BTA of the p-methyl benzenesulfonic acid of the sodium pyrophosphate of 5 mass parts, 1 mass parts, 4 mass parts, the inferior sodium phosphate of 7 mass parts and 2 mass parts is dissolved in 100 parts of deionized waters, stir 5 min, heat while stirring, be heated to 50 DEG C;
2) add the strontium hydroxide of 6 mass parts and the zeolite of 3 mass parts in the solution obtained in step 1), stir 15 min, in the process stirred, add the sodium alginate of 5 mass parts, solution is heated to 80 DEG C, is incubated 5 min;
3) by step 2) in add two imidazolidinyl ureas of the dimethyl silicone polymer of 3 mass parts, the dioctyl phthalate of 1.5 mass parts and 0.8 mass parts in the solution that obtains successively, stir while adding, two imidazolidinyl urea stirs 30 min after adding, and obtains the agent of metal welding point protection;
In order to explanation the present invention clearly, below using method is introduced.
4) 10 min are stirred in the metal welding point protection agent obtained in step 3);
5) cold-reduced sheet (thickness of cold-reduced sheet is 0.9 mm, material trademark: Q345A, and the quantity of tack-weld is 6) after spot welding processing is heated to 80 DEG C;
6) cold-reduced sheet in step 5) is put in the metal welding point protection agent in step 4), soak 50 s, dry cold-reduced sheet.
Find after salt mist experiment; cold-reduced sheet through protective agent process of the present invention improves 17% than the antiseptic power of the cold-reduced sheet through process of spraying paint; 280% is improved than the antiseptic power without the cold-reduced sheet of any process; and the place of treated cold-reduced sheet corrosion is not at first solder joint place; the present invention can improve the resistance to corrosion of cold-reduced sheet, especially can improve the resistance to corrosion of the joint of spot welding.
Claims (4)
1. the protective agent of solder joint during metal solder, its composition and mass fraction are:
Dioctyl phthalate 1.5-2.3 part;
Sodium pyrophosphate 2-5 part;
P-methyl benzenesulfonic acid 1-3 part;
Strontium hydroxide 3-6 part;
Dimethyl silicone polymer 3-5 part;
BTA 2-4 part;
Zeolite 3-8 part;
Inferior sodium phosphate 5-7 part;
Sodium alginate 5-9 part;
Two imidazolidinyl urea 0.3-0.8 part;
Stearic acid 2-6 part;
Deionized water 100 parts.
2. the protective agent of solder joint during a kind of metal solder according to claim 1, is characterized in that: its composition and mass fraction are:
Dioctyl phthalate 2 parts;
Sodium pyrophosphate 3 parts;
P-methyl benzenesulfonic acid 2 parts;
Strontium hydroxide 4 parts;
Dimethyl silicone polymer 4 parts;
BTA 3 parts;
5 parts, zeolite;
Inferior sodium phosphate 6 parts;
Sodium alginate 6 parts;
Two imidazolidinyl urea 0.5 part;
Stearic acid 4 parts;
Deionized water 100 parts.
3. p-methyl benzenesulfonic acid or BTA or the two imidazolidinyl urea application when metal solder in tack-weld protection.
4. the application of solder joint protective agent in tack-weld protection during a kind of metal solder described in claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845830.4A CN104625481A (en) | 2014-12-31 | 2014-12-31 | Protective agent for welding spot in metal welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845830.4A CN104625481A (en) | 2014-12-31 | 2014-12-31 | Protective agent for welding spot in metal welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104625481A true CN104625481A (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410845830.4A Pending CN104625481A (en) | 2014-12-31 | 2014-12-31 | Protective agent for welding spot in metal welding |
Country Status (1)
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| CN (1) | CN104625481A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112625541A (en) * | 2020-12-08 | 2021-04-09 | 沈阳化工大学 | Hierarchical-pore nano-zeolite modified epoxy flame-retardant coating |
| CN112725775A (en) * | 2020-12-24 | 2021-04-30 | 福达合金材料股份有限公司 | Protective agent for reducing contact resistance of magnetic latching relay and application thereof |
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| JP2000017456A (en) * | 1998-07-02 | 2000-01-18 | Otake Rikichi | Metal product having silica coating and its preparation |
| CN1793822A (en) * | 2005-12-02 | 2006-06-28 | 东华大学 | Fracture end protective agent used for brittle fiber mechanics measurement, its proparation and use |
| CN103060803A (en) * | 2013-01-10 | 2013-04-24 | 西安科技大学 | Method for preparing composite coating at surface of neodymium iron boron permanent magnet |
| CN103556142A (en) * | 2011-07-27 | 2014-02-05 | 中国科学院宁波材料技术与工程研究所 | Passivation liquid for environment-friendly copper and copper alloy surface and passivation method |
| CN104109472A (en) * | 2014-06-19 | 2014-10-22 | 锐展(铜陵)科技有限公司 | Corrosion resistant aluminum alloy surface treatment agent |
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2014
- 2014-12-31 CN CN201410845830.4A patent/CN104625481A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017456A (en) * | 1998-07-02 | 2000-01-18 | Otake Rikichi | Metal product having silica coating and its preparation |
| CN1793822A (en) * | 2005-12-02 | 2006-06-28 | 东华大学 | Fracture end protective agent used for brittle fiber mechanics measurement, its proparation and use |
| CN103556142A (en) * | 2011-07-27 | 2014-02-05 | 中国科学院宁波材料技术与工程研究所 | Passivation liquid for environment-friendly copper and copper alloy surface and passivation method |
| CN103060803A (en) * | 2013-01-10 | 2013-04-24 | 西安科技大学 | Method for preparing composite coating at surface of neodymium iron boron permanent magnet |
| CN104109472A (en) * | 2014-06-19 | 2014-10-22 | 锐展(铜陵)科技有限公司 | Corrosion resistant aluminum alloy surface treatment agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112625541A (en) * | 2020-12-08 | 2021-04-09 | 沈阳化工大学 | Hierarchical-pore nano-zeolite modified epoxy flame-retardant coating |
| CN112725775A (en) * | 2020-12-24 | 2021-04-30 | 福达合金材料股份有限公司 | Protective agent for reducing contact resistance of magnetic latching relay and application thereof |
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Application publication date: 20150520 |