CN104562027A - Preparation method of metal welding spot protective agent - Google Patents
Preparation method of metal welding spot protective agent Download PDFInfo
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- CN104562027A CN104562027A CN201410845712.3A CN201410845712A CN104562027A CN 104562027 A CN104562027 A CN 104562027A CN 201410845712 A CN201410845712 A CN 201410845712A CN 104562027 A CN104562027 A CN 104562027A
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Abstract
The invention discloses a preparation method of a metal welding spot protective agent, and belongs to the field of welding protection. The preparation method comprises the following steps: 1) weighing in parts by mass: dissolving sodium pyrophosphate, p-toluenesulfonic acid, benzotriazole, sodium hypophosphite and stearic acid in deionized water, and stirring and heating at the same time; 2) adding strontium hydroxide and zeolites in the solution obtained from the step (1), adding sodium alginate during the process of stirring, and heating the solution; 3) sequentially adding polydimethylsiloxane, dioctyl phthalate and diazolidinyl urea in the solution obtained from the step (2), stirring after the addition of the diazolidinyl urea is completed, and obtaining the metal welding spot protective agent. The metal welding spot protective agent prepared by the preparation method can have a good protection effect on a welding spot on a cold-rolled sheet, form a protection layer on the surface of the cold-rolled sheet, and prevent oxidation and corrosion of the cold-rolled sheet with the welding spot as the center after spot welding.
Description
Technical field
The present invention relates to welding protection field, specifically, relate to the preparation method of a kind of metal welding point protection agent.
Background technology
Sheet metal process in general basic equipment comprises sheet shears, numerical control press/laser, plasma, water jet cutting machine, bending press and various utility appliance as Abrollhaspel, levelling machine, burnisher burring machine, spot welding machine 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 physicals 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 workpiece surface, 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 ground-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 snap-in force, and then stack assemblies is pushed under the second snap-in force being greater than the first snap-in force.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 contaminate environment, and there is the high problem of cost, the invention provides the preparation method of a kind of metal welding point protection agent, it adopts trisodium phosphate, tosic acid, strontium hydroxide, polydimethylsiloxane, benzotriazole, zeolite, inferior sodium phosphate, sodium alginate, two Imidurea and stearic acid prepare the agent of metal welding point protection, 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 preparation method for metal welding point protection agent, the steps include:
1) weigh by mass fraction: the stearic acid of the benzotriazole of the tosic acid of the trisodium phosphate of 2-5 mass parts, 1-3 mass parts, 2-4 mass parts, the inferior sodium phosphate of 5-7 mass parts and 2-6 mass parts is dissolved in 100 parts of deionized waters, stir 5-10 min, heat while stirring, be heated to 40-50 DEG C;
2) add the strontium hydroxide of 3-6 mass parts and the zeolite of 3-8 mass parts in the solution obtained in step 1), stir 10-15 min, in the process stirred, add the sodium alginate of 5-9 mass parts, solution is heated to 70-80 DEG C, insulation 5-10 min;
3) by step 2) in add two Imidureas of the polydimethylsiloxane of 3-5 mass parts, the dioctyl phthalate (DOP) of 1.5-2.3 mass parts and 0.3-0.8 mass parts in the solution that obtains successively; stir while adding; two Imidurea stirs 20-30 min after adding, and obtains the agent of metal welding point protection.
Preferably, the mass parts of described each material is:
Dioctyl phthalate (DOP) 2 parts;
Trisodium phosphate 3 parts;
Tosic acid 2 parts;
Strontium hydroxide 4 parts;
Polydimethylsiloxane 4 parts;
Benzotriazole 3 parts;
5 parts, zeolite;
Inferior sodium phosphate 6 parts;
Sodium alginate 6 parts;
Two Imidurea 0.5 part;
Stearic acid 4 parts;
Deionized water 100 parts.
Preferably, the surface tension of described polydimethylsiloxane is 21.3 × 10-3Nm-1.
Preferably, the Heating temperature in described step 1) is 45 DEG C.
Preferably, described step 2) in solution be heated to 76 DEG C, be incubated 8 min.
3, beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) preparation method of the present invention adopts trisodium phosphate, tosic acid, strontium hydroxide, polydimethylsiloxane, benzotriazole, zeolite, inferior sodium phosphate, sodium alginate, two Imidurea and stearic acid to prepare protective material, prepared protective material well can protect the solder joint on cold-reduced sheet, a kind of protective layer 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) raw materials cost of the present invention's employing is low, energy repeated multiple times utilization, more environmental protection;
(3) protective agent that prepared by the present invention can form good protective layer on the surface of cold-reduced sheet, and do not affect follow-up processing, the thickness of protective layer is only 0.01-0.03 mm, plays protective effect to metal.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
embodiment 1
A preparation method for metal welding point protection agent, the steps include:
1) weigh by mass fraction: the stearic acid of the benzotriazole of the tosic acid of the trisodium phosphate 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 Imidureas of the polydimethylsiloxane of 4 mass parts, the dioctyl phthalate (DOP) of 2 mass parts and 0.5 mass parts in the solution that obtains successively, stir while adding, two Imidurea 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 mark: Q235A, and the quantity of spot 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 material 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
A preparation method for metal welding point protection agent, the steps include:
1) weigh by mass fraction: the stearic acid of the benzotriazole of the tosic acid of the trisodium phosphate 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 Imidureas of the polydimethylsiloxane of 5 mass parts, the dioctyl phthalate (DOP) of 2.3 mass parts and 0.3 mass parts in the solution that obtains successively, stir while adding, two Imidurea 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 mark: Q195A, and the quantity of spot 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 material 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
A preparation method for metal welding point protection agent, the steps include:
1) weigh by mass fraction: the stearic acid of the benzotriazole of the tosic acid of the trisodium phosphate 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 Imidureas of the polydimethylsiloxane of 3 mass parts, the dioctyl phthalate (DOP) of 1.5 mass parts and 0.8 mass parts in the solution that obtains successively, stir while adding, two Imidurea 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 mark: Q345A, and the quantity of spot 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 material 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 (5)
1. a preparation method for metal welding point protection agent, the steps include:
1) weigh by mass fraction: the stearic acid of the benzotriazole of the tosic acid of the trisodium phosphate of 2-5 mass parts, 1-3 mass parts, 2-4 mass parts, the inferior sodium phosphate of 5-7 mass parts and 2-6 mass parts is dissolved in 100 parts of deionized waters, stir 5-10 min, heat while stirring, be heated to 40-50 DEG C;
2) add the strontium hydroxide of 3-6 mass parts and the zeolite of 3-8 mass parts in the solution obtained in step 1), stir 10-15 min, in the process stirred, add the sodium alginate of 5-9 mass parts, solution is heated to 70-80 DEG C, insulation 5-10 min;
3) by step 2) in add two Imidureas of the polydimethylsiloxane of 3-5 mass parts, the dioctyl phthalate (DOP) of 1.5-2.3 mass parts and 0.3-0.8 mass parts in the solution that obtains successively; stir while adding; two Imidurea stirs 20-30 min after adding, and obtains the agent of metal welding point protection.
2. the preparation method of a kind of metal welding point protection according to claim 1 agent, is characterized in that: the mass parts of described each material is:
Dioctyl phthalate (DOP) 2 parts;
Trisodium phosphate 3 parts;
Tosic acid 2 parts;
Strontium hydroxide 4 parts;
Polydimethylsiloxane 4 parts;
Benzotriazole 3 parts;
5 parts, zeolite;
Inferior sodium phosphate 6 parts;
Sodium alginate 6 parts;
Two Imidurea 0.5 part;
Stearic acid 4 parts;
Deionized water 100 parts.
3. the preparation method of a kind of metal welding point protection according to claim 1 agent, is characterized in that: the surface tension of described polydimethylsiloxane is 21.3 × 10
-3nm
-1.
4. the preparation method of a kind of metal welding point protection according to claim 1 agent, is characterized in that: the Heating temperature in described step 1) is 45 DEG C.
5. the preparation method of a kind of metal welding point protection according to claim 1 agent, is characterized in that: described step 2) in solution be heated to 76 DEG C, be incubated 8 min.
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| CN201410845712.3A CN104562027A (en) | 2014-12-31 | 2014-12-31 | Preparation method of metal welding spot protective agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410845712.3A CN104562027A (en) | 2014-12-31 | 2014-12-31 | Preparation method of metal welding spot protective agent |
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| CN104562027A true CN104562027A (en) | 2015-04-29 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0867996A (en) * | 1994-08-29 | 1996-03-12 | Nippon Steel Corp | Rust preventing method for continuously cast slab and surface treated slab |
| CN101517015A (en) * | 2006-08-02 | 2009-08-26 | Posco公司 | Coating solution for forming insulating film with excellent corrosion resistance property and film close adhesion property and film intensity without chrome and a method for making the insulation film |
| CN101910464A (en) * | 2007-12-26 | 2010-12-08 | Posco公司 | Coating solution for forming insulating film, method for forming insulating film of non-oriented electrical steel sheet and non-oriented electrical steel sheet by using it |
| CN102985509A (en) * | 2010-03-31 | 2013-03-20 | Cci株式会社 | Cooling liquid composition |
| CN104099595A (en) * | 2014-06-19 | 2014-10-15 | 锐展(铜陵)科技有限公司 | Surface treating agent for wipe resistant aluminum alloy |
| CN104231770A (en) * | 2014-09-03 | 2014-12-24 | 天长市开林化工有限公司 | Fireproof coating |
-
2014
- 2014-12-31 CN CN201410845712.3A patent/CN104562027A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0867996A (en) * | 1994-08-29 | 1996-03-12 | Nippon Steel Corp | Rust preventing method for continuously cast slab and surface treated slab |
| CN101517015A (en) * | 2006-08-02 | 2009-08-26 | Posco公司 | Coating solution for forming insulating film with excellent corrosion resistance property and film close adhesion property and film intensity without chrome and a method for making the insulation film |
| CN101910464A (en) * | 2007-12-26 | 2010-12-08 | Posco公司 | Coating solution for forming insulating film, method for forming insulating film of non-oriented electrical steel sheet and non-oriented electrical steel sheet by using it |
| CN102985509A (en) * | 2010-03-31 | 2013-03-20 | Cci株式会社 | Cooling liquid composition |
| CN104099595A (en) * | 2014-06-19 | 2014-10-15 | 锐展(铜陵)科技有限公司 | Surface treating agent for wipe resistant aluminum alloy |
| CN104231770A (en) * | 2014-09-03 | 2014-12-24 | 天长市开林化工有限公司 | Fireproof coating |
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Application publication date: 20150429 |
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