CN102828174A - Method and system for surface phosphating treatment of steel - Google Patents
Method and system for surface phosphating treatment of steel Download PDFInfo
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- CN102828174A CN102828174A CN201210349424XA CN201210349424A CN102828174A CN 102828174 A CN102828174 A CN 102828174A CN 201210349424X A CN201210349424X A CN 201210349424XA CN 201210349424 A CN201210349424 A CN 201210349424A CN 102828174 A CN102828174 A CN 102828174A
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Abstract
The invention discloses a method and a system for surface phosphating treatment of steel. The method comprises the following steps of: accurately weighting following raw materials in percentage by weight: 0.4-0.8% of zinc oxides, 2.0-3.0% of phosphoric acid, 3.0-5.0% of nickel nitrate, 0.5-1.0% of zinc nitrate, 0.2-3.5% of sodium fluoride, 2.0-4.0% of sodium chlorate, 0.5-2.0% of citric acid, 2.0-3.0% of sodium nitrite, and the balance of water, and mixing the weighted raw materials so as to obtain a phosphating solution; carrying out degreasing treatment, first water washing, acid washing, secondary water washing, surface conditioning treatment, neutralizing treatment and phosphating treatment on workpieces; and carrying out water washing and drying on the workpieces subjected to phosphating. According to the method disclosed by the invention, no additional heating device is required, thereby reducing the cost of investment, and reducing the energy consumption; the steel subjected to the treatment is smooth and fine in surface, strong in corrosion resistance and high in formed film thickness; and the system disclosed by the invention is simple in structure, low in equipment cost, easy to operate, and high in production efficiency.
Description
Technical field
The present invention relates to the surface chemistry technical field, be specifically related to a kind of steel surface carried out parkerized method and system.
Background technology
When steel surface contacts with surrounding medium, often get rusty because of oxidation corrosion.Be to improve the etch resistant properties of iron and steel, it is a kind of row and effective means that steel surface is carried out bonderizing.Phosphatization is that metal is put into phosphoric acid salt is main solution, makes itself and solution generation chemical reaction, forms a kind of even, method of being insoluble in the phosphate coating of water on its surface.Phosphatize phosphate coat combines more firm with the metallic surface, the space in the phosphatize phosphate coat has strengthened antioxygen G&W diffusibility, has resistance to chemical attack.
Existing steel surface is carried out parkerized method, complex procedures, efficient are low, require high to staff's labour intensity; The normal phosphatization liquid that adopts is medium and high temperature phosphatization liquid, and the phosphatize phosphate coat crystal grain of formation is thick, thickness and power consumption is big, cost is high.Like publication number is that the Chinese patent of CN1231705A discloses a kind of water-based phosphoric acid salts solution, produces phosphate coating on the metallic surface that is used for being processed by iron, steel, zinc, zinc alloy, aluminum or aluminum alloy; This solution contains 0.3 to 5gZn
2+/ l and 0.1 to 3g nitroguanidine/l, the S value is 0.03 to 0.3, Zn:P
2O
5Weight ratio equal 1:5 to 1:30; When this phosphatization liquid uses, need under 15 ~ 70 ℃ temperature, carry out, temperature is higher, needs the outer heating installation of increment, has increased production cost.
Publication number is that the Chinese patent of CN101117709A discloses a kind of nickeliferous steel iron phosphatising liquid and method for bonderizing thereof, and the composition of this phosphatization liquid and each component concentrations are: ZnO, 5 ~ 12g/L; NaNO
3, 2 ~ 6g/L and ［ Ni
2+, 0.5 ~ 2.0g/L; This phosphatization liquid is 2 ~ 4 through NaOH solution and phosphorus acid for adjusting pH value, and the operating mode regulation and control are complicated.
Summary of the invention
The invention provides the parkerized method of a kind of steel surface, simple to operate, do not need heating, save energy, cost is low.
The parkerized method of a kind of steel surface comprises:
(1) accurately take by weighing each raw material by following weight percent, mix, obtain phosphatization liquid:
(2) workpiece is carried out skimming treatment, once washing, cleanup acid treatment, secondary water washing, table successively and mediate reason, neutralizing treatment;
(3) the phosphatization liquid of the workpiece after the neutralizing treatment being put into step (1) preparation carries out bonderizing;
(4) with the workpiece behind the bonderizing wash, drying.
The grease of steel surface, greasy dirt etc. have barrier action to bonderizing; Influence combining of phosphatization crystal and steel surface, thereby the bonding force that causes forming phosphatize phosphate coat or phosphatize phosphate coat and steel surface is poor, is grease, the greasy dirt of removing steel surface; Workpiece is carried out skimming treatment; The grease-removing agent of described skimming treatment is the alkaline defatting agent that contains tensio-active agent, and the time of skimming treatment is 3 ~ 5min, and temperature is 50 ~ 60 ℃; Described alkaline defatting agent is aqueous sodium hydroxide solution or aqueous sodium carbonate, and described tensio-active agent is an X 2073.
Described cleanup acid treatment is for to handle 2 ~ 10min in 25 ~ 50 ℃ of mineral acids, described mineral acid is hydrochloric acid, phosphoric acid or sulfuric acid, is preferably phosphoric acid, to remove the rusty stain of steel surface.
The table adjustment that described table is mediated reason is the adjustment of phosphoric acid titanium salt table; Mass concentration is 0.1% ~ 0.2%; It is 3 ~ 5min that table is mediated the reason time, to eliminate the unequal defective of the caused corrosion of acid pickling and rust removing, improves the speed of follow-up phosphatization; Promote that steel surface produces the uniform phosphate coating of compact crystallization in parkerizing process, strengthen corrosion resisting property.
It is acid that steel surface after the cleanup acid treatment is, and for thoroughly eliminating acid influence, further improves the phosphatize phosphate coat firmness, and the workpiece that his-and-hers watches are mediated after the reason carries out neutralizing treatment, and the neutralizing agent of described neutralizing treatment is a phosphoric acid, and the time of neutralizing treatment is 3 ~ 10min.
The described parkerized time is 10 ~ 30min, and temperature is a normal temperature.
The present invention also provides and has adopted aforesaid method steel surface to be carried out the system of phosphatization; Comprise tactic degreasing pond, washing pool I, pickling tub, washing pool II, table accent pond, neutralization tank, phosphatization pond and washing pool III; Described washing pool I, washing pool II and washing pool below III are equipped with inlet channel, and below, described phosphatization pond is provided with phosphatization liquid liquid-transport pipe-line.
Described degreasing pond, washing pool I, pickling tub, washing pool II, table transfer pond, neutralization tank, phosphatization pond and washing pool III to be the rectangle pond, and the concrete size in rectangle pond can be according to the size and the decision of pending workpiece amount of pending workpiece.
Described degreasing pond, washing pool I, pickling tub, washing pool II, table transfer pond, neutralization tank and washing pool III outside to be equipped with the heating water jacket, can select treatment temp according to practical situation, can be on the shelf in the time of need not carrying out heat treated.
Phosphatization liquid is normal-temperature phosphorizing liquid in the inventive method, has reduced cost of investment, has reduced energy consumption again; Steel surface after the inventive method is handled is smooth fine and closely woven, and solidity to corrosion is strong, and film forming thickness is high; The parkerized system architecture of steel surface of the present invention is simple, and equipment cost is low, and is easy to operate, and production efficiency is high.
Description of drawings
Fig. 1 is the FB(flow block) of the inventive method.
Fig. 2 is the structural representation of system of the present invention.
Embodiment
Embodiment 1
Take by weighing zinc oxide 40g, phosphoric acid 300g, zinc nitrate 100g, nickelous nitrate 300g, Sodium Fluoride 30g, VAL-DROP 300g, Hydrocerol A 60g, Sodium Nitrite 200g; Above-mentioned each raw material is put in the 4000g water; Stir, mix, fully dissolve, obtain phosphatization liquid finished product.
As shown in Figure 2; Steel surface is carried out the system of phosphatization; Comprise degreasing pond 1, washing pool I 2, pickling tub 3, washing pool II 4, table accent pond 5, neutralization tank 6, phosphatization pond 7 and washing pool III 8; Degreasing pond 1, washing pool I 2, pickling tub 3, washing pool II 4, table transfer pond 5, neutralization tank 6, phosphatization pond 7 and washing pool III 8 to be arranged in order; Washing pool I 2, washing pool II 4 are equipped with inlet channel 9 with washing pool III 8 belows, and 7 belows, phosphatization pond are provided with phosphatization liquid liquid-transport pipe-line 10, and degreasing pond 1, washing pool I 2, pickling tub 3, washing pool II 4, table transfer pond 5, neutralization tank 6, phosphatization pond 7 and washing pool III 8 to be the rectangle pond.
Adopt the method for said system, iron and steel parts is placed in the corresponding hanging basket, the hanging basket that iron and steel parts is housed is placed in the degreasing pond 1 the steel surface phosphatization; 50 ℃ of following skimming treatment 5min after the workpiece skimming treatment, put into washing pool I 2 and clean; Put into pickling tub 3 after the cleaning again, with phosphoric acid pickling 10min, after the cleanup acid treatment; Put into washing pool II 4 and carry out secondary cleaning, put into table after the cleaning again and transfer pond 5 to show to mediate reason, it is that mass concentration is 0.2% titanium phosphate table adjustment that table is transferred treatment agent; The normal temperature following table is mediated reason 5min, and table is mediated and put into neutralization tank 6 after the reason again and use phosphoric acid to carry out neutralizing treatment, and the treatment time is 6min; Workpiece after neutralizing treatment is put into phosphatization pond 7, carries out bonderizing 15min under the normal temperature, and then puts into 8 cleanings of washing pool III, after drying.
The phosphatize phosphate coat that present embodiment makes is smooth, fine and close, and the workpiece after the processing did not have rusty stain through 76 hours after the salt-fog test.
Embodiment 3
System among the employing embodiment 2 is placed on iron and steel parts in the corresponding hanging basket the method for steel surface phosphatization, and the hanging basket that iron and steel parts is housed is placed in the degreasing pond 1; 55 ℃ of following skimming treatment 8min after the workpiece skimming treatment, put into washing pool I 2 and clean; Put into pickling tub 3 after the cleaning again, with phosphoric acid pickling 5min, after the cleanup acid treatment; Put into washing pool II 4 and carry out secondary cleaning, put into table after the cleaning again and transfer pond 5 to show to mediate reason, it is that mass concentration is 0.1% titanium phosphate table adjustment that table is transferred treatment agent; The normal temperature following table is mediated reason 5min, and table is mediated and put into neutralization tank 6 after the reason again and use phosphoric acid to carry out neutralizing treatment, and the treatment time is 5min; Workpiece after neutralizing treatment is put into phosphatization pond 7, carries out bonderizing 20min under the normal temperature, and then puts into 8 cleanings of washing pool III, after drying.
The phosphatize phosphate coat that present embodiment makes is smooth, fine and close, and the workpiece after the processing did not have rusty stain through 76 hours after the salt-fog test.
Claims (9)
1. the parkerized method of steel surface is characterized in that, may further comprise the steps:
(1) accurately take by weighing each raw material by following weight percent, mix, obtain phosphatization liquid:
(2) workpiece is carried out skimming treatment, once washing, cleanup acid treatment, secondary water washing, table successively and mediate reason, neutralizing treatment;
(3) the phosphatization liquid of the workpiece after the neutralizing treatment being put into step (1) preparation carries out bonderizing;
(4) with the workpiece behind the bonderizing wash, drying.
2. the parkerized method of steel surface as claimed in claim 1; It is characterized in that; The grease-removing agent of described skimming treatment is the alkaline defatting agent that contains tensio-active agent, and the time of skimming treatment is 3 ~ 5min, and temperature is 50 ~ 60 ℃; Described alkaline defatting agent is aqueous sodium hydroxide solution or aqueous sodium carbonate, and described tensio-active agent is an X 2073.
3. the parkerized method of steel surface as claimed in claim 1 is characterized in that described cleanup acid treatment is for to handle 2 ~ 10min in 25 ~ 50 ℃ of mineral acids, and described mineral acid is hydrochloric acid, phosphoric acid or sulfuric acid.
4. the parkerized method of steel surface as claimed in claim 1 is characterized in that, the table adjustment that described table is mediated reason is the adjustment of phosphoric acid titanium salt table, and mass concentration is 0.1% ~ 0.2%, and it is 3 ~ 5min that table is mediated the reason time.
5. the parkerized method of steel surface as claimed in claim 1 is characterized in that the neutralizing agent of described neutralizing treatment is a phosphoric acid, and the time of neutralizing treatment is 3 ~ 10min.
6. the parkerized method of steel surface as claimed in claim 1, the described parkerized time is 10 ~ 30min, temperature is a normal temperature.
7. the parkerized method of steel surface as claimed in claim 1 is carried out the system of phosphatization to steel surface; It is characterized in that; Comprise tactic degreasing pond (1), washing pool I (2), pickling tub (3), washing pool II (4), table accent pond (5), neutralization tank (6), phosphatization pond (7) and washing pool III (8); Described washing pool I (2), washing pool II (4) are equipped with inlet channel (9) with washing pool III (8) below, and below, described phosphatization pond (7) is provided with phosphatization liquid liquid-transport pipe-line (10).
8. the system that steel surface is carried out phosphatization as claimed in claim 7; It is characterized in that described degreasing pond (1), washing pool I (2), pickling tub (3), washing pool II (4), table transfer pond (5), neutralization tank (6), phosphatization pond (7) and washing pool III (8) to be the rectangle pond.
9. the system that steel surface is carried out phosphatization as claimed in claim 7; It is characterized in that described degreasing pond (1), washing pool I (2), pickling tub (3), washing pool II (4), table transfer pond (5), neutralization tank (6) and washing pool III (8) outside to be equipped with the heating water jacket.
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| CN201210349424XA CN102828174A (en) | 2012-09-19 | 2012-09-19 | Method and system for surface phosphating treatment of steel |
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| CN201210349424XA CN102828174A (en) | 2012-09-19 | 2012-09-19 | Method and system for surface phosphating treatment of steel |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120417A (en) * | 2014-08-14 | 2014-10-29 | 衢州红灯笼化工技术服务有限公司 | Metal surface treatment no-discharge process |
| CN104342657A (en) * | 2013-07-25 | 2015-02-11 | 上海格拉曼国际消防装备有限公司 | Method for carrying out surface pretreatment on metal member of special vehicle |
| CN105154896A (en) * | 2015-09-06 | 2015-12-16 | 安徽拓盛汽车零部件有限公司 | Degreasing process for automobile damping and suspension part |
| CN105256316A (en) * | 2015-10-14 | 2016-01-20 | 哈尔滨飞机工业集团有限责任公司 | Phosphorization pretreatment method for alloy steel parts |
| CN106219175A (en) * | 2016-07-26 | 2016-12-14 | 贵州钢绳股份有限公司 | A kind of pickling automated production line control system |
| CN107338428A (en) * | 2017-06-02 | 2017-11-10 | 余卫民 | Cobalt, zinc, iron ternary system phosphate metal conditioner, preparation method and composite deposition thing |
| CN107723693A (en) * | 2017-11-03 | 2018-02-23 | 安徽新合富力科技有限公司 | A kind of Nd Fe B alloys method for bonderizing |
| CN108977802A (en) * | 2018-06-29 | 2018-12-11 | 唐山钢铁集团有限责任公司 | A kind of laboratory simulation automobile quenched nickelclad producing line method for bonderizing |
| CN111822304A (en) * | 2020-05-15 | 2020-10-27 | 江苏兴齐智能输电科技有限公司 | Steel rod pipe surface treatment process |
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| CN1847455A (en) * | 2006-05-11 | 2006-10-18 | 武汉大学 | Ternary Zn-Ni-Mn phosphorizing solution |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104342657A (en) * | 2013-07-25 | 2015-02-11 | 上海格拉曼国际消防装备有限公司 | Method for carrying out surface pretreatment on metal member of special vehicle |
| CN104120417A (en) * | 2014-08-14 | 2014-10-29 | 衢州红灯笼化工技术服务有限公司 | Metal surface treatment no-discharge process |
| CN105154896A (en) * | 2015-09-06 | 2015-12-16 | 安徽拓盛汽车零部件有限公司 | Degreasing process for automobile damping and suspension part |
| CN105256316A (en) * | 2015-10-14 | 2016-01-20 | 哈尔滨飞机工业集团有限责任公司 | Phosphorization pretreatment method for alloy steel parts |
| CN106219175A (en) * | 2016-07-26 | 2016-12-14 | 贵州钢绳股份有限公司 | A kind of pickling automated production line control system |
| CN107338428A (en) * | 2017-06-02 | 2017-11-10 | 余卫民 | Cobalt, zinc, iron ternary system phosphate metal conditioner, preparation method and composite deposition thing |
| CN107338428B (en) * | 2017-06-02 | 2019-01-11 | 余卫民 | Cobalt, zinc, iron ternary system phosphate metal conditioner, preparation method and composite deposition object |
| CN107723693A (en) * | 2017-11-03 | 2018-02-23 | 安徽新合富力科技有限公司 | A kind of Nd Fe B alloys method for bonderizing |
| CN108977802A (en) * | 2018-06-29 | 2018-12-11 | 唐山钢铁集团有限责任公司 | A kind of laboratory simulation automobile quenched nickelclad producing line method for bonderizing |
| CN108977802B (en) * | 2018-06-29 | 2021-11-05 | 唐山钢铁集团有限责任公司 | Phosphating method for laboratory simulation quenching steel plate production line for automobile |
| CN111822304A (en) * | 2020-05-15 | 2020-10-27 | 江苏兴齐智能输电科技有限公司 | Steel rod pipe surface treatment process |
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Application publication date: 20121219 |