CN101724838A - Preparation method of phosphating liquid - Google Patents
Preparation method of phosphating liquid Download PDFInfo
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- CN101724838A CN101724838A CN200810155891A CN200810155891A CN101724838A CN 101724838 A CN101724838 A CN 101724838A CN 200810155891 A CN200810155891 A CN 200810155891A CN 200810155891 A CN200810155891 A CN 200810155891A CN 101724838 A CN101724838 A CN 101724838A
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- water
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a preparation method of a phosphating liquid and relates to the technical field of oil nozzles and oil pumps production. The method comprises the following steps of: (1) dissolving and blending ZnO to be pasty by using water, stirring and reacting H3PO4 with the pasty ZnO, and then adding NHO3 to react and prepare an aqueous solution containing Zn(H2PO3)2; (2) dissolving a complexing agent, manganous dihydrogen phosphate, a surface active agent and a compound accelerating agent by using water; (3) mixing the two obtained solutions and adding water to adjust the concentrations of the components to that 1L of the phosphating liquid contains 40-50L of zinc dihydric phosphate, 20-30L of the manganous dihydrogen phosphate, 1.6-2.1g of the compound accelerating agent, 5g of the complexing agent and 0.06-0.1g of the surface active agent; and (4) standing still and curing for more than 24h. After the phosphating liquid prepared by adopting the method is used for carrying out surface phosphating on the front part of an oil injection pump plunger piston, a layer of water-fast phosphate protection film is formed on the metal surface so as to improve the oxidation resistance of metal workpieces and prolong the service lives of matching parts.
Description
Technical field
The present invention relates to the production technical field of oil nozzle oil pump.
Background technology
Need plunger matching parts in the oil supply system of diesel motor, plunger matching parts in the past adopts the GCr15 material, non-corrosibility is general, fuel oil enters the oil spout head cavity of oil thrower through plunger matching parts, delivery valve matching parts, high-pressure line, this structure and principle of work fuel feeding route are long, loosely organized, failure rate is higher, and maintenance is complicated.
The contriver has invented the injection pump plunger of a kind of good operating stability, long service life, form by cylindrical plunger and sleeve, the middle part of plunger is provided with radially recessed neck, and the front end of plunger is taper, finishes oil suction and compression process by the axially reciprocal relatively sliding between cylindrical plunger and the sleeve.During oil suction, fuel oil enters from oil supply hole, and the recessed neck through the plunger middle part arrives oil return hole; When cylindrical plunger continues when sleeve rear end moves, the recessed neck at plunger middle part no longer is communicated with oil supply hole, oil return hole, enter the telescopic oil discharge passage from oil supply hole, pump into high-pressure oil, oil, gas are mixed spray into the combustion chamber by the taper lateral oil spout head cavity of plunger front end.The present invention is pressed into injector head by the upper and lower to-and-fro movement of plunger with high pressure fuel, the plunger to-and-fro movement once, the whole process of just finish a round-robin oil-feed, measuring, boosting and spraying.Compact construction of the present invention, reliability height, maintenance are simply.
If but adopt universal metal spare, and the plunger front end, promptly the oil spout head can not stand high temperature for a long time, and corrosion-vulnerable is to product life is shortened.The contriver carries out bonderizing with the surface of injection pump plunger, and phosphatization liquid in the past can not reach ideal effect, directly influences the use of product.
Summary of the invention
The object of the invention is to invent the preparation method of phosphating liquid that a kind of alramenting that adds a kind of injection pump plunger of long life is handled usefulness.
The present invention includes following steps:
1) ZnO is used water dissolution furnishing pasty state, with H
3PO
4With pasty state ZnO stirring reaction, add HNO again
3, reaction makes and contains Zn (H
2PO
3)
2The aqueous solution;
2) with water dissolution complexing agent, acid manganous phosphate, tensio-active agent and compound accelerant;
3) above-mentioned two kinds of solution are mixed, adding water, to adjust each components and concentration primary zinc phosphate content to every liter of phosphatization liquid be that 40～50L, acid manganous phosphate content are that 20～30L, compound accelerant content are that 1.6～2.1g, complexing agent content are that 5g, surfactant content are 0.06～0.1g;
4) leave standstill more than the slaking 24h, be phosphatization liquid.
Technology of the present invention is simple, be easy to production control; after the phosphatization liquid that adopts aforesaid method to be configured to carries out the alramenting processing to the injection pump plunger front portion; formed the water-fast phosphate coating of one deck in the metallic surface; thereby improved the antioxidant property and the visual appearance of metal works, and can prolong even part work-ing life greatly.Anticorrosive metal energy force rate after the phosphatization not anti-corrosion capability of phosphatization improves 10～12 times.
Embodiment
One, preparation phosphatization liquid:
1, ZnO is used water dissolution furnishing pasty state, with H
3PO
4Slowly pour among the pasty state ZnO, stirring reaction is complete.Slowly add HNO
3, must contain Zn (H after reacting completely
2PO
3)
2The aqueous solution.
2, with water dissolution complexing agent, acid manganous phosphate, tensio-active agent and compound accelerant.
3, above-mentioned two kinds of solution are mixed, add water to that primary zinc phosphate content is that 40～50L, acid manganous phosphate content are that 20～30L, compound accelerant content are that 1.6～2.1g, complexing agent content are that 5g, surfactant content are 0.06～0.1g in every liter of phosphatization liquid, must contain Zn (H
2PO
3)
2, Zn (NO
3)
2And Mn (H
2PO
4)
2Dense phosphatization liquid.
4, leave standstill more than the slaking 24h, standby.
If the preparation working fluid needs above-mentioned phosphatization liquid dilution twice is added an amount of promotor, use Na
2CO
3Adjust acidity to processing range, stir, standby.
Two, phosphatization is used:
1, oil removing: adopt industrial cleaning agent to remove the workpiece surface greasy dirt.
2, washing: adopt clear water that workpiece cleaning is clean.
3, rust cleaning: adopt dilute hydrochloric acid solution to the anterior rust staining of removing of plunger.
4, washing: adopt clear water that workpiece cleaning is clean.
5, phosphatization:
It is in 30～50 ℃ the phosphatization working fluid that workpiece is immersed temperature, keeps 10～20min.
As seen rete prolongs in time and thickens, and color is also progressively deepened, and can obtain at last by ash to greyish black color.
6, washing: adopt industrial cleaning agent, clear water that part is cleaned up.
7, drying: ventilate and dry.
Claims (1)
1. preparation method of phosphating liquid is characterized in that may further comprise the steps:
1) ZnO is used water dissolution furnishing pasty state, with H
3PO
4With pasty state ZnO stirring reaction, add HNO again
3, reaction makes and contains Zn (H
2PO
3)
2The aqueous solution;
2) with water dissolution complexing agent, acid manganous phosphate, tensio-active agent and compound accelerant;
3) above-mentioned two kinds of solution are mixed, adding water, to adjust each components and concentration primary zinc phosphate content to every liter of phosphatization liquid be that 40～50L, acid manganous phosphate content are that 20～30L, compound accelerant content are that 1.6～2.1g, complexing agent content are that 5g, surfactant content are 0.06～0.1g;
4) leave standstill more than the slaking 24h, be phosphatization liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810155891A CN101724838A (en) | 2008-10-17 | 2008-10-17 | Preparation method of phosphating liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810155891A CN101724838A (en) | 2008-10-17 | 2008-10-17 | Preparation method of phosphating liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101724838A true CN101724838A (en) | 2010-06-09 |
Family
ID=42446373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810155891A Pending CN101724838A (en) | 2008-10-17 | 2008-10-17 | Preparation method of phosphating liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101724838A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864446A (en) * | 2012-10-12 | 2013-01-09 | 广西工学院 | Normal-temperature phosphating solution and method for preparing same |
| CN103915230A (en) * | 2014-04-11 | 2014-07-09 | 合肥工业大学 | Preparation method of corrosion resistant sintered Nd-Fe-B magnet |
| CN104962898A (en) * | 2015-06-30 | 2015-10-07 | 大连碧城环保科技股份有限公司 | Manganese-bearing phosphating solution additive and using method thereof |
| CN105349984A (en) * | 2015-11-25 | 2016-02-24 | 安徽红桥金属制造有限公司 | Anti-corrosion treatment agent for metal material surface |
| CN105420711A (en) * | 2015-11-25 | 2016-03-23 | 安徽红桥金属制造有限公司 | Anticorrosion treatment process of cast workpiece |
| CN105420727A (en) * | 2015-11-25 | 2016-03-23 | 安徽红桥金属制造有限公司 | Anticorrosion treatment process of zinc alloy die casting |
-
2008
- 2008-10-17 CN CN200810155891A patent/CN101724838A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864446A (en) * | 2012-10-12 | 2013-01-09 | 广西工学院 | Normal-temperature phosphating solution and method for preparing same |
| CN103915230A (en) * | 2014-04-11 | 2014-07-09 | 合肥工业大学 | Preparation method of corrosion resistant sintered Nd-Fe-B magnet |
| CN104962898A (en) * | 2015-06-30 | 2015-10-07 | 大连碧城环保科技股份有限公司 | Manganese-bearing phosphating solution additive and using method thereof |
| CN104962898B (en) * | 2015-06-30 | 2017-09-26 | 大连碧城环保科技股份有限公司 | A kind of manganese-series phosphorized solution additive and its application method |
| CN105349984A (en) * | 2015-11-25 | 2016-02-24 | 安徽红桥金属制造有限公司 | Anti-corrosion treatment agent for metal material surface |
| CN105420711A (en) * | 2015-11-25 | 2016-03-23 | 安徽红桥金属制造有限公司 | Anticorrosion treatment process of cast workpiece |
| CN105420727A (en) * | 2015-11-25 | 2016-03-23 | 安徽红桥金属制造有限公司 | Anticorrosion treatment process of zinc alloy die casting |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |