CN102424966A - Process for phosphating surface of spring steel plate - Google Patents
Process for phosphating surface of spring steel plate Download PDFInfo
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- CN102424966A CN102424966A CN2011103997507A CN201110399750A CN102424966A CN 102424966 A CN102424966 A CN 102424966A CN 2011103997507 A CN2011103997507 A CN 2011103997507A CN 201110399750 A CN201110399750 A CN 201110399750A CN 102424966 A CN102424966 A CN 102424966A
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Abstract
The invention discloses a process for phosphating the surface of a spring steep plate and belongs to the technical field of metal surface chemical treatment processes. The process comprises the following steps: loading a workpiece, washing the workpiece with hot water, degreasing the workpiece, washing with water, modifying surface, phosphating, washing with water, blowing water, drying and cooling. Compared with the prior art, the process has the advantages that: 1, the corrosion resistance of the spring steel plate is high, and the process is suitable for products with high-corrosion requirements; 2, when the process is adopted, the spring steel plate can be changed, the surface adhesion force of the phosphating film of the spring steel plate is increased, paint is prevented from stripping, low-quality paint can be selected, and paint cost is saved; and 3, in the phosphating step, the required time is short, the temperature is low, the energy consumption is low, the chemical properties of the phosphating solution are stable, and the phosphating effect is good.
Description
Technical field
The invention belongs to the technical field of metallic surface chemical treatment technology, relate in particular to a kind of Steel Spring Plate alramenting treatment process.
Background technology
Phosphatization is a Steel Spring Plate workpiece japanning pretreatment technology commonly used, and workpiece forms one deck phosphatize phosphate coat through bonderizing, plays antirust effect to a certain extent, can strengthen the sticking power of lacquer and workpiece surface simultaneously.
Traditional phosphating process is at present:
(1) degreasing and rust removal " two-in-one " soaks, and 60～70 ℃, 50～70 ℃, 10min;
(2) water cleaning and dipping, normal temperature, 1min;
(3) normal temperature, 1min are soaked in neutralization;
(4) table is transferred and is soaked normal temperature, 1min;
(5) phosphatization is soaked, and 60～80 ℃, 6min;
(6) water cleans the immersion of two roads, normal temperature, 1min;
(7) oven dry is 110～140 ℃, 10min.
Mainly there is following problem in domestic phosphating process at present:
1, corrosion resistant ability is relatively poor, is not suitable for the product that high corrosion requires;
2, the surface adhesion force of phosphatize phosphate coat is relatively poor, falls lacquer easily, and is when selecting paint for use, higher to the specification of quality of paint.
3, required time is longer during the phosphatization step, and temperature is higher, and the energy that when the phosphatization step, need consume is many, also causes phosphatization liquid unstable easily, influences the phosphatization effect.
Summary of the invention
The technical problem that the present invention will solve provides a kind of Steel Spring Plate alramenting treatment process, can improve the surface adhesion force of corrosion resistance and phosphatize phosphate coat effectively.
In order to solve the problems of the technologies described above, the present invention provides following technical scheme: a kind of Steel Spring Plate alramenting treatment process comprises following concrete steps:
A, pending Steel Spring Plate workpiece is fixed;
B, use hot water injection's workpiece, the dust on the workpiece, particle, spot are removed;
C, compound concentration are 5-10%, and total alkalinity is the 35-55 point, and free alkalinity is the grease-removing agent that 18-35 is ordered, and under 50-55 ℃, with grease-removing agent workpiece is sprayed, and the time is 0.5min;
D, use pH value as the water of 7-8 workpiece to be sprayed, the time is 1.7min;
E, preparation pH value are that the table of 8.5-9.5 is adjusted, and adjust with table that at normal temperatures workpiece is sprayed, and the time is 1.75min;
F, preparation total acidity are the 24-28 point, and free acidity is the 1.2-1.5 point, and promoter concentration is the phosphorization agent that 1.2-1.8 selects, and under 35-45 ℃, with phosphorization agent workpiece is sprayed, and the time is 2.7min;
G, use pH value as the water of 6-7 workpiece to be sprayed, the time is 1min;
H, use blowing are at a high speed blown water to workpiece, and the time is 1min;
I, with hot blast workpiece is dried, the time is 5min;
The mode of j, the strong cold-peace oven dry of employing is cooled off workpiece, and the time is 8min.
Compared with prior art, the invention has the advantages that: 1, comparatively fine and close because of the phosphatize phosphate coat of the formation after handling through this phosphating process, so strengthened the corrosion resistance of Steel Spring Plate; Can satisfy high corrosive requirement, the workpiece that adopts the inventive method to handle is under the situation of japanning not; The time that corrosion occurs is 244 hours; And adopt the workpiece of conventional process, under the situation of japanning not, the time that corrosion occurs is 168 hours; 2, adopt this technology, can strengthen the surface adhesion force of Steel Spring Plate phosphatize phosphate coat, be not easy lacquer; Phosphatize phosphate coat by the inventive method generation; Its iso grade can reach 0 grade, the phosphatize phosphate coat that adopts traditional method to produce, and the multipotency of its iso grade reaches 1 grade; When selecting paint, can select the poor slightly paint of quality for use, practice thrift the paint cost; 3, required time is shorter during the phosphatization step, and temperature is lower, and the energy that when the phosphatization step, need consume is lower, and stable in properties is learned in phosphatization liquefaction, and phosphatization is effective.
Further, excessive for fear of surging force, the spray pressure that said spray adopts is 0.1-0.2 Mpa.
Further, in order to prevent the grease-removing agent caking, influence degreasing effect, the pH value of said grease-removing agent is smaller or equal to 11.
Embodiment
A kind of Steel Spring Plate alramenting of the present invention treatment process comprises following concrete steps:
A, pending Steel Spring Plate workpiece is fixed;
B, use hot water injection's workpiece, the dust on the workpiece, particle, spot are removed;
C, compound concentration are 5-10%, and total alkalinity is the 35-55 point, and free alkalinity is the grease-removing agent that 18-35 is ordered, and under 50-55 ℃, with grease-removing agent workpiece is sprayed, and the time is 0.5min;
D, use pH value as the water of 7-8 workpiece to be sprayed, the time is 1.7min;
E, preparation pH value are that the table of 8.5-9.5 is adjusted, and adjust with table that at normal temperatures workpiece is sprayed, and the time is 1.75min;
F, preparation total acidity are 24-28, and free acidity is 1.2-1.5, and promoter concentration is the phosphorization agent of 1.2-1.8, under 35-45 ℃, with phosphorization agent workpiece are sprayed, and the time is 2.7min;
G, use pH value as the water of 6-7 workpiece to be sprayed, the time is 1min;
H, use blowing are at a high speed blown water to workpiece, and the time is 1min;
I, with hot blast workpiece is dried, the time is 5min;
The mode of j, the strong cold-peace oven dry of employing is cooled off workpiece, and the time is 8min.
In the present embodiment, excessive for fear of surging force, the spray pressure that said spray adopts is 0.1-0.2Mpa.In order to prevent the grease-removing agent caking, influence degreasing effect, the pH value of said grease-removing agent is smaller or equal to 11.
When embodiment of the present invention, following precaution are arranged: 1, whether as the phenomenon of workpiece jaundice or dust takes place, it is normal in time to detect phosphatization liquid; Like total acid, free acid is in the normal range of whether counting of promotor; If promotor is on the low side; Then add promotor,, then can fully stir and let it evaporate into standard range as higher.2, in parkerizing process, the phosphatization filtering system must be opened, and cleaning and filtering cloth or change filter cloth weekly.3, when pre-treatment was carried out, operator must not arbitrarily be stopped, in order to avoid workpiece corrosion is on line stopped like true the need, also should notify the pre-treatment operator, according to the particular case on the line, were guaranteeing on the rustless basis of workpiece, stopped and handled.
The mensuration of total acidity, free acidity, promoter concentration in the present invention:
1, the mensuration of total acidity (TA): with pipette, extract 10ml tank liquor in the Erlenmeyer flask of 250ml; To dilute about zero(ppm) water 50ml; Add 4 phenolphthalein indicators; With the NaoH standard solution titration of 1mol/L, to solution by colourless be terminal point when becoming pink, the milliliter number of the NaoH standardized solution that is consumed is " point " number of total acidity.As consume 0.1mlNaoH mark liquid, then total acidity is 1 " point ";
2, the mensuration of free acidity: with pipette, extract 10ml tank liquor in the Erlenmeyer flask of 250ml; To dilute about zero(ppm) water 50ml; Add 1-2 and drip the bromjophenol blue indicator; With the NaoH standard solution titration of 0.1mol/L, be terminal point when solution becomes blueness by yellow, the milliliter number of the NaoH standardized solution that is consumed is " point " number of free acidity.As consume 1mlNaoH mark liquid, then free acidity is 1 " point ";
3. the mensuration of promoter concentration:
Fill with phosphatization liquid with fermentation tube, thionamic acid 15 poured in the pipe, with hand cover bottleneck and wait to manage tens of seconds of standing upside down in gas not after changing, read the number of division of gas at fermentation tube.It is qualified that number of division is for " 1.2-2 " puts.If be lower than this number, then need replenish.
The using and adjusting of phosphatization liquid in the present invention:
One, detection method
1, the detection of total acidity: get phosphatization liquid 10ml in triangular flask; Add the 40-50ml pure water; With phenolphthalein is indicator (3-4 drips), uses NaoH standard solution titration to the solution of 1mol/L to be terminal point by the colourless redness that becomes, and the milliliter number of the standardized solution that is consumed is counting of total acidity.
2, the detection of free acidity: get phosphatization liquid 10ml in triangular flask; Add the 40-50ml pure water; With bromine Finland is indicator (1); Use NaoH standard solution titration to the solution of 0.1mol/L to become the light blue terminal point that is by yellow, the milliliter number of the standardized solution that is consumed is counting of free acidity.
Two, inflation method
1, the inflation method of total acidity: when total acidity is too high, adds proper amount of clear water and can reduce total acidity; Cross when low when total acidity, add liquid concentrator and can be increased to total acidity.
2, the inflation method of free acidity: when free acidity is too high, can add NaoH, generally in 1000 liters of (promptly 1 ton) phosphatization liquid, add 0.4NaoH, can reduce free acidity 1 point.Its adding method is: NaoH is mixed with 10% the aqueous solution and slowly adds, and stir; Spend when low when free acid, can add phosphoric acid, generally in 1000 liters of phosphatization liquid, add 0.85kg phosphoric acid, can improve free acidity 1 point.
The workpiece that adopts the inventive method to handle, under the situation of japanning not, the time that corrosion occurs is 244 hours, and adopts the workpiece of conventional process, under the situation of japanning not, the time that corrosion occurs is 168 hours; By the phosphatize phosphate coat that the inventive method produces, its iso grade can reach 0 grade, the phosphatize phosphate coat that adopts traditional method to produce, and the multipotency of its iso grade reaches 1 grade.So with respect to traditional treatment method, treatment process of the present invention has stronger corrosion resistant ability and surface adhesion force.
For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement, these also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.
Claims (3)
1. Steel Spring Plate alramenting treatment process is characterized in that comprising following concrete steps:
A, pending Steel Spring Plate workpiece is fixed;
B, use hot water injection's workpiece, the dust on the workpiece, particle, spot are removed;
C, compound concentration are 5-10%, and total alkalinity is the 35-55 point, and free alkalinity is the grease-removing agent that 18-35 is ordered, and under 50-55 ℃, with grease-removing agent workpiece is sprayed, and the time is 0.5min;
D, use pH value as the water of 7-8 workpiece to be sprayed, the time is 1.7min;
E, preparation pH value are that the table of 8.5-9.5 is adjusted, and adjust with table that at normal temperatures workpiece is sprayed, and the time is 1.75min;
F, preparation total acidity are the 24-28 point, and free acidity is the 1.2-1.5 point, and promoter concentration is the phosphorization agent that 1.2-1.8 selects, and under 35-45 ℃, with phosphorization agent workpiece is sprayed, and the time is 2.7min;
G, use pH value as the water of 6-7 workpiece to be sprayed, the time is 1min;
H, use blowing are at a high speed blown water to workpiece, and the time is 1min;
I, with hot blast workpiece is dried, the time is 5min;
The mode of j, the strong cold-peace oven dry of employing is cooled off workpiece, and the time is 8min.
2. Steel Spring Plate alramenting treatment process as claimed in claim 1 is characterized in that: the spray pressure that said spray adopts is 0.1-0.2 Mpa.
3. Steel Spring Plate alramenting treatment process as claimed in claim 2, it is characterized in that: the pH value of said grease-removing agent is smaller or equal to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103997507A CN102424966A (en) | 2011-12-06 | 2011-12-06 | Process for phosphating surface of spring steel plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103997507A CN102424966A (en) | 2011-12-06 | 2011-12-06 | Process for phosphating surface of spring steel plate |
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| CN102424966A true CN102424966A (en) | 2012-04-25 |
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| CN2011103997507A Pending CN102424966A (en) | 2011-12-06 | 2011-12-06 | Process for phosphating surface of spring steel plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882419A (en) * | 2014-02-24 | 2014-06-25 | 宿迁华宇纺织机电有限公司 | Surface phosphatizing process of textile manufacturing machine |
| CN104342697A (en) * | 2014-10-15 | 2015-02-11 | 广东美芝制冷设备有限公司 | Polish-free film type phosphorization method and application thereof |
| 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 |
| CN105903656A (en) * | 2016-06-28 | 2016-08-31 | 盐城工学院 | Impurity removal process of color steel plate |
| CN106435608A (en) * | 2016-08-17 | 2017-02-22 | 安徽红桥金属制造有限公司 | Derusting treatment process for high-elasticity spring steel surfaces |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730164A (en) * | 2005-09-06 | 2006-02-08 | 贵州科盛彩色喷涂有限公司 | Outdoor metal surface double coating antiseptic chromatic spray painting method |
-
2011
- 2011-12-06 CN CN2011103997507A patent/CN102424966A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730164A (en) * | 2005-09-06 | 2006-02-08 | 贵州科盛彩色喷涂有限公司 | Outdoor metal surface double coating antiseptic chromatic spray painting method |
Non-Patent Citations (2)
| Title |
|---|
| 卢建成 等: "常温磷化技术在我公司的应用研究", 《2007年全国机电企业工艺年会《星火机床杯》工艺创兴发展绿色制造节约型工艺釉浆征文科技论文集》, 14 October 2007 (2007-10-14) * |
| 米德伟 等: "钢铁磷化", 《首届国际(西安)涂料、涂装、表面工程高层论坛论文集(第二分册 涂装前处理)》, 1 May 2005 (2005-05-01) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882419A (en) * | 2014-02-24 | 2014-06-25 | 宿迁华宇纺织机电有限公司 | Surface phosphatizing process of textile manufacturing machine |
| CN104342697A (en) * | 2014-10-15 | 2015-02-11 | 广东美芝制冷设备有限公司 | Polish-free film type phosphorization method and application thereof |
| 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 |
| CN105903656A (en) * | 2016-06-28 | 2016-08-31 | 盐城工学院 | Impurity removal process of color steel plate |
| CN106435608A (en) * | 2016-08-17 | 2017-02-22 | 安徽红桥金属制造有限公司 | Derusting treatment process for high-elasticity spring steel surfaces |
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Application publication date: 20120425 |