CN104250771A - Room temperature phosphating solution of hot rolled steel plate - Google Patents
Room temperature phosphating solution of hot rolled steel plate Download PDFInfo
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- CN104250771A CN104250771A CN201310260218.6A CN201310260218A CN104250771A CN 104250771 A CN104250771 A CN 104250771A CN 201310260218 A CN201310260218 A CN 201310260218A CN 104250771 A CN104250771 A CN 104250771A
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Abstract
The invention discloses a room temperature phosphating solution of a hot rolled steel plate, and the phosphating solution comprises 34-38g / L of manganous dihydrogen phosphate, 44-48g / L of zinc nitrate, 5-7g / L of 85% phosphoric acid, 3-4g/ L of bismuth molybdate, 5-7g / L of sodium tungstate, 1-3g / L of sodium chlorate, 4-6g / L of ammonium citrate, 24-28g / L of sodium nitrate, 2-4g / L of copper nitrate, 8-10g / L of tartaric acid, 3-5g / L of ethylene diamine tetraacetic acid, 2-4g / L of urotropine, and the balance of water.
Description
Technical field
The present invention relates to technical field of surface, particularly relate to a kind of normal-temperature phosphorizing liquid of hot-rolled steel sheet.
Background technology
Steel coating front surface phosphating process, can be divided into zinc system, zinc cathode, manganese system, ferrous phosphate system and alkali metal phosphating, and above phosphatization system is not selected production and application because of its different superiority by different enterprises.Wherein ferric solid-acid, there is solution easily control, tank liquor is stable, phosphatization speed is fast, solution use temperature is low, sediment weight is few, solution long service life, there is no harmful environmental pollutant, cost is also much cheap than the Phosphating Solution of other kinds, and its corrosion resistance but can not be satisfactory.Zinc phosphating is fine and closely woven with its even film layer, decorate properties is good, strong with coating binding force, phosphorization membrane is more stable, advantages such as corrosion resistance and good and extensively being adopted by most of enterprise, but the operator of the technical indicator Que Shi factory of its harshness usually feel simply helpless, in addition domestic steel market steel surface situation differs (rolling oil and the material difference thereof of use are very large), again due to the current ununified management in Phosphating Solution market, technological operation standardization is short of to some extent, enterprise's working condition limit, a series of disadvantages such as current technological specification disunity are caused to can hardly be avoided, for this reason, phosphating operation technique compared with specification is proposed, Production Flow Chart, the good Phosphating Solution of selectivity is the basis carrying out phosphatization at present.Because former people emphasize separately the corrosion resisting property of phosphatize phosphate coat itself, and ignore the matching performance of phosphatize phosphate coat and coating, make the unilateral thickness requiring phosphorization membrane, in fact phosphatize phosphate coat itself does not bear too many anti-corrosion effect, and whether he and coating matched performance be good, be only the key affecting whole coat system, the thick property of middle high temperature phosphorization membrane crystallization is crisp, and porosity is high, and resistance is large, be unfavorable for being uniformly distributed of electric field on workpiece, be not suitable for electrophoretic painting and electrostatic plastic spraying.
Phosphating at Room Temperature is that at present research is the most active, technical progress is the fastest, can the wide phosphorization technology of DEVELOPMENT PROSPECT, he overcomes the shortcomings such as the energy consumption of senior middle school's temperature phosphorization technology is high, cost is large, efficiency is low, but normal-temperature phosphorizing liquid of the prior art and phosphating process still exist such-and-such defect, therefore need further improvement.
Summary of the invention
The object of the invention is to the normal-temperature phosphorizing liquid proposing a kind of hot-rolled steel sheet, this Phosphating Solution operating temperature range is wide, and streamline operration is ripe, tank liquor is stablized, and pollutant effulent is few, and tank liquor easily controls, film forming speed fast, and the phosphate coating corrosion resisting property of preparation is excellent.
For reaching this object, the present invention by the following technical solutions:
A normal-temperature phosphorizing liquid for hot-rolled steel sheet, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 34-38g/L, zinc nitrate 44-48g/L, 85% phosphoric acid 5-7g/L, bismuth molybdate 3-4g/L, sodium wolframate 5-7g/L, sodium chlorate 1-3g/L, ammonium citrate 4-6g/L, SODIUMNITRATE 24-28g/L, cupric nitrate 2-4g/L, tartrate 8-10g/L, ethylenediamine tetraacetic acid (EDTA) 3-5g/L, urotropine 2-4g/L, surplus is water.
Preferably, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 35-37g/L, zinc nitrate 45-47g/L, 85% phosphoric acid 5.5-6.5g/L, bismuth molybdate 3.3-3.7g/L, sodium wolframate 5.5-6.5g/L, sodium chlorate 1.5-2.5g/L, ammonium citrate 4.5-5.5g/L, SODIUMNITRATE 25-27g/L, cupric nitrate 2.5-3.5g/L, tartrate 8.5-9.5g/L, ethylenediamine tetraacetic acid (EDTA) 3.5-4.5g/L, urotropine 2.5-3.5g/L, surplus is water.
Most preferably, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 36g/L, zinc nitrate 46g/L, 85% phosphoric acid 6.0g/L, bismuth molybdate 3.5g/L, sodium wolframate 6.0g/L, sodium chlorate 2.0g/L, ammonium citrate 5.0g/L, SODIUMNITRATE 26g/L, cupric nitrate 3.0g/L, tartrate 9.0g/L, ethylenediamine tetraacetic acid (EDTA) 4.0g/L, urotropine 3.0g/L, surplus is water.
The present invention has following beneficial effect:
Normal temperature manganese-containing low-zinc light railway type Phosphating Solution of the present invention have pollution less, cheap, the tank liquor of comprehensive cost easily controls, thus drastically increase working efficiency, reduce the production cost of user, because the characteristic of its longer Reusability, excellent contamination resistance have been saved greatly by water, the possibility reducing pollution, improve the stability of tank liquor.Phosphating Solution solution of the present invention easily controls, tank liquor is stable, phosphatization speed is fast, solution use temperature is low, sediment weight is few, solution long service life, do not have harmful environmental pollutant, cost is also much cheap than the Phosphating Solution of other kinds, and its corrosion resistance is satisfactory.
Embodiment
Embodiment one
A normal-temperature phosphorizing liquid for hot-rolled steel sheet, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 34g/L, zinc nitrate 48g/L, 85% phosphoric acid 5g/L, bismuth molybdate 4g/L, sodium wolframate 5g/L, sodium chlorate 3g/L, ammonium citrate 4g/L, SODIUMNITRATE 28g/L, cupric nitrate 2g/L, tartrate 10g/L, ethylenediamine tetraacetic acid (EDTA) 3g/L, urotropine 4g/L, surplus is water.
Embodiment two
A normal-temperature phosphorizing liquid for hot-rolled steel sheet, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 38g/L, zinc nitrate 44g/L, 85% phosphoric acid 7g/L, bismuth molybdate 3g/L, sodium wolframate 7g/L, sodium chlorate 1g/L, ammonium citrate 6g/L, SODIUMNITRATE 24g/L, cupric nitrate 4g/L, tartrate 8g/L, ethylenediamine tetraacetic acid (EDTA) 5g/L, urotropine 2g/L, surplus is water.
Embodiment three
A normal-temperature phosphorizing liquid for hot-rolled steel sheet, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 35g/L, zinc nitrate 47g/L, 85% phosphoric acid 5.5g/L, bismuth molybdate 3.7g/L, sodium wolframate 5.5g/L, sodium chlorate 2.5g/L, ammonium citrate 4.5g/L, SODIUMNITRATE 27g/L, cupric nitrate 2.5g/L, tartrate 9.5g/L, ethylenediamine tetraacetic acid (EDTA) 3.5g/L, urotropine 3.5g/L, surplus is water.
Embodiment four
A normal-temperature phosphorizing liquid for hot-rolled steel sheet, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 37g/L, zinc nitrate 45g/L, 85% phosphoric acid 6.5g/L, bismuth molybdate 3.3g/L, sodium wolframate 6.5g/L, sodium chlorate 1.5g/L, ammonium citrate 5.5g/L, SODIUMNITRATE 25g/L, cupric nitrate 3.5g/L, tartrate 8.5g/L, ethylenediamine tetraacetic acid (EDTA) 4.5g/L, urotropine 2.5g/L, surplus is water.
Embodiment five
A normal-temperature phosphorizing liquid for hot-rolled steel sheet, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 36g/L, zinc nitrate 46g/L, 85% phosphoric acid 6g/L, bismuth molybdate 3.5g/L, sodium wolframate 6g/L, sodium chlorate 2g/L, ammonium citrate 5g/L, SODIUMNITRATE 26g/L, cupric nitrate 3g/L, tartrate 9g/L, ethylenediamine tetraacetic acid (EDTA) 4g/L, urotropine 3g/L, surplus is water.
Claims (3)
1. a normal-temperature phosphorizing liquid for hot-rolled steel sheet, is characterized in that, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 34-38g/L, zinc nitrate 44-48g/L, 85% phosphoric acid 5-7g/L, bismuth molybdate 3-4g/L, sodium wolframate 5-7g/L, sodium chlorate 1-3g/L, ammonium citrate 4-6g/L, SODIUMNITRATE 24-28g/L, cupric nitrate 2-4g/L, tartrate 8-10g/L, ethylenediamine tetraacetic acid (EDTA) 3-5g/L, urotropine 2-4g/L, surplus is water.
2. the normal-temperature phosphorizing liquid of a kind of hot-rolled steel sheet as claimed in claim 1, it is characterized in that, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 35-37g/L, zinc nitrate 45-47g/L, 85% phosphoric acid 5.5-6.5g/L, bismuth molybdate 3.3-3.7g/L, sodium wolframate 5.5-6.5g/L, sodium chlorate 1.5-2.5g/L, ammonium citrate 4.5-5.5g/L, SODIUMNITRATE 25-27g/L, cupric nitrate 2.5-3.5g/L, tartrate 8.5-9.5g/L, ethylenediamine tetraacetic acid (EDTA) 3.5-4.5g/L, urotropine 2.5-3.5g/L, surplus is water.
3. the normal-temperature phosphorizing liquid of a kind of hot-rolled steel sheet as claimed in claim 2, is characterized in that, consisting of of described Phosphating Solution: phosphate dihydrogen manganese 36g/L, zinc nitrate 46g/L, 85% phosphoric acid 6.0g/L, bismuth molybdate 3.5g/L, sodium wolframate 6.0g/L, sodium chlorate 2.0g/L, ammonium citrate 5.0g/L, SODIUMNITRATE 26g/L, cupric nitrate 3.0g/L, tartrate 9.0g/L, ethylenediamine tetraacetic acid (EDTA) 4.0g/L, urotropine 3.0g/L, surplus is water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310260218.6A CN104250771A (en) | 2013-06-26 | 2013-06-26 | Room temperature phosphating solution of hot rolled steel plate |
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| CN201310260218.6A CN104250771A (en) | 2013-06-26 | 2013-06-26 | Room temperature phosphating solution of hot rolled steel plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019006689A1 (en) * | 2017-07-04 | 2019-01-10 | 深圳市长宏泰科技有限公司 | Black phosphatizing agent, metal member and surface phosphatizing method thereof |
| CN110809636A (en) * | 2017-07-04 | 2020-02-18 | 深圳市长宏泰科技有限公司 | Blackening phosphating agent, metal part and surface phosphating method thereof |
| CN112626509A (en) * | 2020-12-08 | 2021-04-09 | 安徽中鑫精密铸造科技有限公司 | Phosphating processing technology for aluminum alloy die-casting surface treatment |
-
2013
- 2013-06-26 CN CN201310260218.6A patent/CN104250771A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019006689A1 (en) * | 2017-07-04 | 2019-01-10 | 深圳市长宏泰科技有限公司 | Black phosphatizing agent, metal member and surface phosphatizing method thereof |
| CN110809636A (en) * | 2017-07-04 | 2020-02-18 | 深圳市长宏泰科技有限公司 | Blackening phosphating agent, metal part and surface phosphating method thereof |
| CN110809640A (en) * | 2017-07-04 | 2020-02-18 | 深圳市长宏泰科技有限公司 | Black phosphating agent, metal piece and surface phosphating method thereof |
| CN112626509A (en) * | 2020-12-08 | 2021-04-09 | 安徽中鑫精密铸造科技有限公司 | Phosphating processing technology for aluminum alloy die-casting surface treatment |
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Application publication date: 20141231 |