CN101724838A - Preparation method of phosphating liquid - Google Patents

Preparation method of phosphating liquid Download PDF

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Publication number
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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CN
China
Prior art keywords
water
oil
phosphating
agent
content
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN200810155891A
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Chinese (zh)
Inventor
潘明飞
谈仕明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YIZHENG WEIYE OIL PUMP AND NOZZLE CO Ltd
Original Assignee
YIZHENG WEIYE OIL PUMP AND NOZZLE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YIZHENG WEIYE OIL PUMP AND NOZZLE CO Ltd filed Critical YIZHENG WEIYE OIL PUMP AND NOZZLE CO Ltd
Priority to CN200810155891A priority Critical patent/CN101724838A/en
Publication of CN101724838A publication Critical patent/CN101724838A/en
Pending legal-status Critical Current

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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

A kind of preparation method of phosphating liquid
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.
CN200810155891A 2008-10-17 2008-10-17 Preparation method of phosphating liquid Pending CN101724838A (en)

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

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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

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Country Link
CN (1) CN101724838A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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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Open date: 20100609