CN103898494A - Flameproof surface phosphating process and used phosphating solution - Google Patents
Flameproof surface phosphating process and used phosphating solution Download PDFInfo
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- CN103898494A CN103898494A CN201410120074.9A CN201410120074A CN103898494A CN 103898494 A CN103898494 A CN 103898494A CN 201410120074 A CN201410120074 A CN 201410120074A CN 103898494 A CN103898494 A CN 103898494A
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- explosion suppresion
- suppresion surface
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- phosphating
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Abstract
The invention relates to the technical field of flameproof surface treatment processes, and in particular relates to a flameproof surface phosphating process for electrical equipment. The process comprises the steps of preparing phosphating slurry: accommodating warm water with a plastic container, sequentially adding basic copper carbonate, nitric acid, phosphoric acid, zinc oxide, hexamethylene tetramine, sodium fluoride and zinc nitrate, and adding the prepared phosphating solution into talc powder to form paste; brushing the prepared phosphating solution slurry on a flameproof surface in a manner that the thickness of the slurry is not less than 2mm; ensuring the retention time of the phosphating solution slurry on the flameproof surface according to the ambient temperature and the following standards, and wiping the phosphating solution slurry on the flameproof surface, thus phosphating the flameproof surface, namely forming a layer of phosphating film on the flameproof surface. The flameproof surface treated through the phosphating process provided by the invention can not be rusted over more than two years, so that the use safety of underground equipment is greatly improved.
Description
Technical field
Explosion suppresion surface treatment process technical field of the present invention, is specifically related to a kind of explosion suppresion surface phosphorization treatment process of electric installation and the Phosphating Solution using.
Background technology
Along with the raising of development in science and technology and industrialization product requirement, the external coating that is used in the electric installation under mine has higher requirement, owing to being subject to the erosion of the obnoxious flavour adulterating in down-hole damp atmosphere and air, the surface of electric installation is not in long-time, its explosion suppresion surface just can produce chemical transformation, be that explosion suppresion surface there will be corrosion, performance reduces, even there is losing explosion prevention function, have influence on the safety in production under mine, existing processing mode is to plate the metal levels such as zinc to carry out antirust at explosion suppresion surface, corrosion, but this kind of complex process, production cost is high, cycle is long, although also there is the bonderizing mode of adopting, but its effect is not very desirable.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provide a kind of and effectively prevent explosion suppresion surface corrosion and can extend explosion suppresion surface and the explosion suppresion surface phosphorization treatment process of respective electric service life of equipment and the Phosphating Solution using.
The present invention is achieved through the following technical solutions:
Explosion suppresion surface phosphorization treatment process, comprises the steps,
The first step, preparation phosphatization slurry:
(1). contain into 10 kilograms, the warm water of 35C °-45C ° with plastic containers;
(2). weigh ventilation breather CuCO
3cu (OH)
2xH
2o60-80 gram, pours in the above-mentioned plastic containers that are filled with water and is in harmonious proportion;
(3). measure the nitric acid of 290-310 milliliter, density 1.4g/ml, pour in plastic containers and be in harmonious proportion;
(4). measure the phosphoric acid of 830-850 milliliter, density 1.69g/ml, pour in plastic containers and be in harmonious proportion;
(5). weigh zinc oxide 540-560 gram, pour in plastic containers and be in harmonious proportion;
(6). weigh vulkacit H C
6h
12n
470-90 gram, pours in plastic containers and is in harmonious proportion;
(7). weigh Sodium Fluoride 110-130 gram, pour in plastic containers and be in harmonious proportion;
(8). weigh zinc nitrate Zn (NO
3)
26H
2o790-810 gram, pours in plastic containers and is in harmonious proportion;
(9). the Phosphating Solution that above eight steps are prepared adds furnishing starchiness in talcum powder;
Second step, brushes on explosion suppresion surface with the Phosphating Solution preparing, and thickness is no less than 2mm;
The 3rd step, guarantees Phosphating Solution slurry residence time on explosion suppresion surface according to envrionment temperature by following standard:
(1). more than envrionment temperature 30C °, the residence time 25-35 minute of Phosphating Solution slurry on explosion suppresion surface;
(2). envrionment temperature 25C °~29C °, the residence time 55-65 minute of Phosphating Solution slurry on explosion suppresion surface;
(3). envrionment temperature 15C °~24C °, the residence time 115-125 minute of Phosphating Solution slurry on explosion suppresion surface;
(4). envrionment temperature 1C °~14C °, the residence time 175-185 minute of Phosphating Solution slurry on explosion suppresion surface; (5). below envrionment temperature 0C °, the residence time 235-245 minute of Phosphating Solution slurry on explosion suppresion surface;
The 4th step, wipes the Phosphating Solution slurry on explosion suppresion surface, and explosion suppresion surface completes bonderizing, on explosion suppresion surface, forms one deck phosphatize phosphate coat.
If detect, bonderizing is off quality, and need to adopt concentration is that the hot sodium hydroxide solution of 15%-20% is cleaned, and again carries out phosphatization according to above-mentioned steps after removing underproof phosphatize phosphate coat.
Explosion suppresion surface after phosphatization is carried out to quality test, explosion suppresion surface surface sediment-free, rusty stain, phosphatization less than blank; And adopt 2%-5%NaCl solution to be coated on phosphatize phosphate coat, and under room temperature state, flood 110-130 minutes, do not occur that rust spot is qualified.
On explosion suppresion surface after bonderizing, coat slushing oil.
Before phosphatization slurry is coated to explosion suppresion surface, need to be to explosion suppresion surface processing of rust removing, oil removal treatment; Processing of rust removing is with oil or the above sand papering processing of 400#, shows uniform metalluster to explosion suppresion surface surface; Oil removal treatment is for soaking non-leaded gasoline or the wiping of 200# solvent oil with absorbent cotton.
In explosion suppresion surface oil removal treatment, after absorbent cotton is wiped examination on explosion suppresion surface, nothing turns black; Before phosphatization slurry is coated to explosion suppresion surface, the phosphatization slurry that soaks preparation with cotton yarn is all wipings on explosion suppresion surface, check that it is that Phosphating Solution configuration is qualified that explosion suppresion surface is light red, if gray or black gray expandable, dark vermilion red are not good, need add phosphoric acid to allocate again.
For the parkerized Phosphating Solution of explosion suppresion surface, by following composition,
10 kilograms, the warm water of 35C °-45C °; The ventilation breather CuCO of 60-80 gram
3cu (OH)
2xH
2o, the nitric acid of 290-310 milliliter, density 1.4g/ml,
The phosphoric acid of 830-850 milliliter, density 1.69g/ml, the zinc oxide of 540-560 gram, the vulkacit H C of 70-90 gram
6h
12n
4, the Sodium Fluoride of 110-130 gram, the zinc nitrate Zn (NO of 790-810 gram
3)
26H
2o.
Through employing the explosion suppresion surface of above-mentioned Phosphating Solution and phosphorization treatment process, there is advantage, 1, due to the phosphatize phosphate coat forming, to have erosion resistance strong, explosion suppresion surface can not produce corrosion, the time limit of service that has greatly extended electric installation; 2, because explosion suppresion surface can be by corrosion, can guarantee the flame proof gap of equipment; 3, because explosion suppresion surface can be by corrosion, alleviate labour intensity, saved man-hour, and in the past in the time of an explosion-proof device of maintenance, blink just needs 10 several hours at decontamination rust cleaning this respect, transport to after the use of down-hole, the bimester of not wanting one, on explosion suppresion surface, there will be again rusty stain spot, and through phosphating process provided by the invention explosion suppresion surface after treatment can be more than 2 years the time there will not be corrosion phenomena, thereby greatly promoted the security that underground equipment uses.
Embodiment
Embodiment mono-
Explosion suppresion surface phosphorization treatment process, comprises the steps,
The first step, preparation phosphatization slurry:
(1). contain into 10 kilograms, the warm water of 35C with plastic containers;
(2). weigh ventilation breather CuCO
3cu (OH)
2xH
2o60 gram, pours in the above-mentioned plastic containers that are filled with water and is in harmonious proportion;
(3). measure 290 milliliters, the nitric acid of density 1.4g/ml, pour in plastic containers and be in harmonious proportion;
(4). measure 830 milliliters, the phosphoric acid of density 1.69g/ml, pour in plastic containers and be in harmonious proportion;
(5). weigh 540 grams, zinc oxide, pour in plastic containers and be in harmonious proportion;
(6). weigh vulkacit H C
6h
12n
470 grams, pour in plastic containers and be in harmonious proportion;
(7). weigh 110 grams of Sodium Fluorides, pour in plastic containers and be in harmonious proportion;
(8). weigh zinc nitrate Zn (NO
3)
26H
2o790 gram, pours in plastic containers and is in harmonious proportion;
(9). the Phosphating Solution that above eight steps are prepared adds furnishing starchiness in talcum powder;
Before phosphatization slurry is coated to explosion suppresion surface, need to be to explosion suppresion surface processing of rust removing, oil removal treatment; Processing of rust removing, for petrolize, shows uniform metalluster to explosion suppresion surface surface; Oil removal treatment is for soaking non-leaded gasoline wiping with absorbent cotton.In explosion suppresion surface oil removal treatment, after absorbent cotton is wiped examination on explosion suppresion surface, nothing turns black; Before phosphatization slurry is coated to explosion suppresion surface, soak Phosphating Solution local wiping on explosion suppresion surface of preparation with cotton yarn, check that it is that Phosphating Solution configuration is qualified that explosion suppresion surface is light red, if gray or black gray expandable, dark vermilion red are not good, need add again phosphoric acid to allocate.
Second step, brushes on explosion suppresion surface with the Phosphating Solution slurry preparing, and thickness is no less than 2mm;
The 3rd step, guarantees Phosphating Solution slurry residence time on explosion suppresion surface according to envrionment temperature by following standard:
(1). more than envrionment temperature 30C °, 25 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(2). envrionment temperature 25C °~29C °, 55 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(3). envrionment temperature 15C °~24C °, 115 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(4). envrionment temperature 1C °~14C °, 175 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(5). below envrionment temperature 0C °, 235 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
The 4th step, wipes the Phosphating Solution slurry on explosion suppresion surface, and explosion suppresion surface completes bonderizing, on explosion suppresion surface, forms one deck phosphatize phosphate coat.
Explosion suppresion surface after phosphatization is carried out to quality test, explosion suppresion surface surface sediment-free, rusty stain, phosphatization less than blank; And adopt 2%NaCl solution to be coated on phosphatize phosphate coat, and under room temperature state, flood 110 minutes, do not occur that rust spot is qualified.If detect, bonderizing is off quality, and need to adopt concentration is that 15% hot sodium hydroxide solution is cleaned, and again carries out phosphatization according to above-mentioned steps after removing underproof phosphatize phosphate coat.On explosion suppresion surface after bonderizing, coat slushing oil.
Here for the parkerized Phosphating Solution of explosion suppresion surface, by following composition,
10 kilograms, the warm water of 35C °; The ventilation breather CuCO of 60 grams
3cu (OH)
2xH
2o, 290 milliliters, the nitric acid of density 1.4g/ml, 830 milliliters, the phosphoric acid of density 1.69g/ml, the zinc oxide of 540 grams, the vulkacit H C of 70 grams
6h
12n
4, the Sodium Fluoride of 110 grams, the zinc nitrate Zn (NO of 790 grams
3)
26H
2o.
Embodiment bis-
Explosion suppresion surface phosphorization treatment process, comprises the steps,
The first step, preparation phosphatization slurry:
(1). contain into 10 kilograms, the warm water of 40C ° with plastic containers;
(2). weigh ventilation breather CuCO
3cu (OH)
2xH
2o70 gram, pours in the above-mentioned plastic containers that are filled with water and is in harmonious proportion;
(3). measure 300 milliliters, the nitric acid of density 1.4g/ml, pour in plastic containers and be in harmonious proportion;
(4). measure 840 milliliters, the phosphoric acid of density 1.69g/ml, pour in plastic containers and be in harmonious proportion;
(5). weigh zinc oxide 540-560 gram, pour in plastic containers and be in harmonious proportion;
(6). weigh vulkacit H C
6h
12n
470-90 gram, pours in plastic containers and is in harmonious proportion;
(7). weigh 120 grams of Sodium Fluorides, pour in plastic containers and be in harmonious proportion;
(8). weigh zinc nitrate Zn (NO
3)
26H
2o800 gram, pours in plastic containers and is in harmonious proportion;
(9). the Phosphating Solution that above eight steps are prepared adds furnishing starchiness in talcum powder;
Before phosphatization slurry is coated to explosion suppresion surface, need to be to explosion suppresion surface processing of rust removing, oil removal treatment; Processing of rust removing is with the above sand papering processing of 400#, shows uniform metalluster to explosion suppresion surface surface; Oil removal treatment is for soaking the wiping of 200# solvent oil with absorbent cotton.In explosion suppresion surface oil removal treatment, after absorbent cotton is wiped examination on explosion suppresion surface, nothing turns black; Before phosphatization slurry is coated to explosion suppresion surface, the phosphatization slurry that soaks preparation with cotton yarn is all wipings on explosion suppresion surface, check that it is that Phosphating Solution configuration is qualified that explosion suppresion surface is light red, if gray or black gray expandable, dark vermilion red are not good, need add phosphoric acid to allocate again.
Second step, brushes on explosion suppresion surface with the Phosphating Solution slurry preparing, and thickness is no less than 2mm;
The 3rd step, guarantees Phosphating Solution slurry residence time on explosion suppresion surface according to envrionment temperature by following standard:
(1). more than envrionment temperature 30C °, 30 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(2). envrionment temperature 25C °~29C °, 60 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(3). envrionment temperature 15C °~24C °, 120 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(4). envrionment temperature 1C °~14C °, 180 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(5). below envrionment temperature 0C °, 240 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
The 4th step, wipes the Phosphating Solution slurry on explosion suppresion surface, and explosion suppresion surface completes bonderizing, on explosion suppresion surface, forms one deck phosphatize phosphate coat.
Explosion suppresion surface after phosphatization is carried out to quality test, explosion suppresion surface surface sediment-free, rusty stain, phosphatization less than blank; And adopt 3%NaCl solution to be coated on phosphatize phosphate coat, and under room temperature state, flood 120 minutes, do not occur that rust spot is qualified.If detect, bonderizing is off quality, and need to adopt concentration is that 17% hot sodium hydroxide solution is cleaned, and again carries out phosphatization according to above-mentioned steps after removing underproof phosphatize phosphate coat.On explosion suppresion surface after bonderizing, coat slushing oil.
Here used for the parkerized Phosphating Solution of explosion suppresion surface, by following composition,
10 kilograms, the warm water of 40C °; The ventilation breather CuCO of 70 grams
3cu (OH)
2xH
2o, 300 milliliters, the nitric acid of density 1.4g/ml, 840 milliliters, the phosphoric acid of density 1.69g/ml, the zinc oxide of 550 grams,
The vulkacit H C of 80 grams
6h
12n
4, the Sodium Fluoride of 120 grams, the zinc nitrate Zn (NO of 800 grams
3)
26H
2o.
Embodiment tri-
Explosion suppresion surface phosphorization treatment process, comprises the steps,
The first step, preparation phosphatization slurry:
(1). contain into 10 kilograms, the warm water of 45C ° with plastic containers;
(2). weigh ventilation breather CuCO
3cu (OH)
2xH
2o80 gram, pours in the above-mentioned plastic containers that are filled with water and is in harmonious proportion;
(3). measure 310 milliliters, the nitric acid of density 1.4g/ml, pour in plastic containers and be in harmonious proportion;
(4). measure 850 milliliters, the phosphoric acid of density 1.69g/ml, pour in plastic containers and be in harmonious proportion;
(5). weigh 560 grams, zinc oxide, pour in plastic containers and be in harmonious proportion;
(6). weigh vulkacit H C
6h
12n
490 grams, pour in plastic containers and be in harmonious proportion;
(7). weigh 130 grams of Sodium Fluorides, pour in plastic containers and be in harmonious proportion;
(8). weigh zinc nitrate Zn (NO
3)
26H
2o810 gram, pours in plastic containers and is in harmonious proportion;
(9). the Phosphating Solution that above eight steps are prepared adds furnishing starchiness in talcum powder;
Before phosphatization slurry is coated to explosion suppresion surface, need to be to explosion suppresion surface processing of rust removing, oil removal treatment; Processing of rust removing is with oil or the above sand papering processing of 400#, shows uniform metalluster to explosion suppresion surface surface; Oil removal treatment is for soaking non-leaded gasoline or the wiping of 200# solvent oil with absorbent cotton.In explosion suppresion surface oil removal treatment, after absorbent cotton is wiped examination on explosion suppresion surface, nothing turns black; Before phosphatization slurry is coated to explosion suppresion surface, the phosphatization slurry that soaks preparation with cotton yarn is all wipings on explosion suppresion surface, check that it is that Phosphating Solution configuration is qualified that explosion suppresion surface is light red, if gray or black gray expandable, dark vermilion red are not good, need add phosphoric acid to allocate again.
Second step, brushes on explosion suppresion surface with the Phosphating Solution preparing, and thickness is no less than 2mm;
The 3rd step, guarantees Phosphating Solution slurry residence time on explosion suppresion surface according to envrionment temperature by following standard:
(1). more than envrionment temperature 30C °, 35 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(2). envrionment temperature 25C °~29C °, 65 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(3). envrionment temperature 15C °~24C °, 125 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(4). envrionment temperature 1C °~14C °, 185 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
(5). below envrionment temperature 0C °, 245 minutes residence time on explosion suppresion surface of Phosphating Solution slurry;
The 4th step, wipes the Phosphating Solution slurry on explosion suppresion surface, and explosion suppresion surface completes bonderizing, on explosion suppresion surface, forms one deck phosphatize phosphate coat.On explosion suppresion surface after bonderizing, coat slushing oil.
Explosion suppresion surface after phosphatization is carried out to quality test, explosion suppresion surface surface sediment-free, rusty stain, phosphatization less than blank; And adopt 5%NaCl solution to be coated on phosphatize phosphate coat, and under room temperature state, flood 130 minutes, do not occur that rust spot is qualified.If detect, bonderizing is off quality, and need to adopt concentration is that 20% hot sodium hydroxide solution is cleaned, and again carries out phosphatization according to above-mentioned steps after removing underproof phosphatize phosphate coat.
Here used for the parkerized Phosphating Solution of explosion suppresion surface, by following composition,
10 kilograms, the warm water of 45C °; The ventilation breather CuCO of 80 grams
3cu (OH)
2xH
2o, 310 milliliters, the nitric acid of density 1.4g/ml, 850 milliliters, the phosphoric acid of density 1.69g/ml, the zinc oxide of 560 grams, the vulkacit H C of 90 grams
6h
12n
4, the Sodium Fluoride of 130 grams, the zinc nitrate Zn (NO of 810 grams
3)
26H
2o.
The present invention is not limited to described embodiment, as adopt contain into 10 kilograms, warm water with plastic containers, here 10 kilograms is not that warm water can only be 10 kilograms, as required Phosphating Solution number adjust, as 20,30 kilograms etc., the certainly corresponding material that drops into also changes according to ratio.
Claims (7)
1. explosion suppresion surface phosphorization treatment process, is characterized in that, comprise the steps,
The first step, preparation phosphatization slurry:
(1). contain into 10 kilograms, the warm water of 35C °-45C ° with plastic containers;
(2). weigh ventilation breather CuCO
3cu (OH)
2xH
2o60-80 gram, pours in the above-mentioned plastic containers that are filled with water and is in harmonious proportion;
(3). measure the nitric acid of 290-310 milliliter, density 1.4g/ml, pour in plastic containers and be in harmonious proportion;
(4). measure the phosphoric acid of 830-850 milliliter, density 1.69g/ml, pour in plastic containers and be in harmonious proportion;
(5). weigh zinc oxide 540-560 gram, pour in plastic containers and be in harmonious proportion;
(6). weigh vulkacit H C
6h
12n
470-90 gram, pours in plastic containers and is in harmonious proportion;
(7). weigh Sodium Fluoride 110-130 gram, pour in plastic containers and be in harmonious proportion;
(8). weigh zinc nitrate Zn (NO
3)
26H
2o790-810 gram, pours in plastic containers and is in harmonious proportion;
(9). the Phosphating Solution that above eight steps are prepared adds furnishing starchiness in talcum powder;
Second step, brushes on explosion suppresion surface with the Phosphating Solution slurry preparing, and thickness is no less than 2mm;
The 3rd step, guarantees Phosphating Solution slurry residence time on explosion suppresion surface according to envrionment temperature by following standard:
(1). more than envrionment temperature 30C °, the residence time 25-35 minute of Phosphating Solution slurry on explosion suppresion surface; (2). envrionment temperature 25C °~29C °, the residence time 55-65 minute of Phosphating Solution slurry on explosion suppresion surface;
(3). envrionment temperature 15C °~24C °, the residence time 115-125 minute of Phosphating Solution slurry on explosion suppresion surface;
(4). envrionment temperature 1C °~14C °, the residence time 175-185 minute of Phosphating Solution slurry on explosion suppresion surface;
(5). below envrionment temperature 0C °, the residence time 235-245 minute of Phosphating Solution slurry on explosion suppresion surface; The 4th step, wipes the Phosphating Solution slurry on explosion suppresion surface, and explosion suppresion surface completes bonderizing, on explosion suppresion surface, forms one deck phosphatize phosphate coat.
2. explosion suppresion surface phosphorization treatment process according to claim 1, it is characterized in that, if detect, bonderizing is off quality, and need to adopt concentration is that the hot sodium hydroxide solution of 15%-20% is cleaned, and again carries out phosphatization according to above-mentioned steps after removing underproof phosphatize phosphate coat.
3. explosion suppresion surface phosphorization treatment process according to claim 1 and 2, is characterized in that, the explosion suppresion surface after phosphatization is carried out to quality test, explosion suppresion surface surface sediment-free, rusty stain, phosphatization less than blank; And adopt 2%-5%NaCl solution to be coated on phosphatize phosphate coat, and under room temperature state, flood 110-130 minutes, do not occur that rust spot is qualified.
4. explosion suppresion surface phosphorization treatment process according to claim 3, is characterized in that, on the explosion suppresion surface after bonderizing, coats slushing oil.
5. explosion suppresion surface phosphorization treatment process according to claim 3, is characterized in that, before phosphatization slurry is coated to explosion suppresion surface, and need to be to explosion suppresion surface processing of rust removing, oil removal treatment; Processing of rust removing is with oil or the above sand papering processing of 400#, shows uniform metalluster to explosion suppresion surface surface; Oil removal treatment is for soaking non-leaded gasoline or the wiping of 200# solvent oil with absorbent cotton.
6. explosion suppresion surface phosphorization treatment process according to claim 5, is characterized in that, in explosion suppresion surface oil removal treatment, after absorbent cotton is wiped examination on explosion suppresion surface, nothing turns black;
Before phosphatization slurry is coated to explosion suppresion surface, the phosphatization slurry that soaks preparation with cotton yarn is all wipings on explosion suppresion surface, check that it is that Phosphating Solution configuration is qualified that explosion suppresion surface is light red, if gray or black gray expandable, dark vermilion red are not good, need add phosphoric acid to allocate again.
7. for the parkerized Phosphating Solution of explosion suppresion surface, it is characterized in that, by following composition,
10 kilograms, the warm water of 35C °-45C °;
The ventilation breather CuCO of 60-80 gram
3cu (OH)
2xH
2o,
The nitric acid of 290-310 milliliter, density 1.4g/ml,
The phosphoric acid of 830-850 milliliter, density 1.69g/ml,
The zinc oxide of 540-560 gram,
The vulkacit H C of 70-90 gram
6h
12n
4,
The Sodium Fluoride of 110-130 gram,
Zinc nitrate Zn (the NO of 790-810 gram
3)
26H
2o.
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Cited By (3)
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CN104762615A (en) * | 2014-12-02 | 2015-07-08 | 江苏王牌电机制造有限公司 | Insulation treatment method for rotor core |
CN105441921A (en) * | 2015-11-29 | 2016-03-30 | 郑臣钏 | Metal part anti-rust technology |
CN111793793A (en) * | 2020-07-31 | 2020-10-20 | 张家港市升恒机械设备制造有限公司 | Phosphorization rust-proof treatment method for explosion-proof cabinet |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN105441921B (en) * | 2015-11-29 | 2019-09-10 | 郑臣钏 | A kind of metalwork anti-corrosive technology |
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CN111793793A (en) * | 2020-07-31 | 2020-10-20 | 张家港市升恒机械设备制造有限公司 | Phosphorization rust-proof treatment method for explosion-proof cabinet |
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