CN102433559B - Rare earth cerium-containing metal treatment fluid and production method thereof - Google Patents
Rare earth cerium-containing metal treatment fluid and production method thereof Download PDFInfo
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- CN102433559B CN102433559B CN 201110326018 CN201110326018A CN102433559B CN 102433559 B CN102433559 B CN 102433559B CN 201110326018 CN201110326018 CN 201110326018 CN 201110326018 A CN201110326018 A CN 201110326018A CN 102433559 B CN102433559 B CN 102433559B
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Abstract
The invention discloses a rare earth cerium-containing metal treatment fluid and a production method thereof. The rare earth cerium-containing metal treatment fluid is characterized by consisting of 0.5 to 2 parts of fluorozirconic acid, 1.5 to 3.5 parts of zinc molybdate, 0.2 to 1 part of sodium nitrate, 0.04 to 0.06 part of ethylene diamine tetraacetic acid, 0.4 to 0.6 part of sodium fluoride, 0.2 to 0.8 part of lanthanum nitrate and 100 parts of water. A ceramic technology is adopted, and after the metal surface treatment fluid is coated, sprayed or deposited on the surface of metal, a zirconium oxide ceramic film can be formed on the surface of the metal, and the activity of the zirconium oxide ceramic film formed on the surface of the metal is greatly improved under the action of a rare earth element of cerous nitrate; compared with the similar ceramic technology, the production method has the advantages that: the surface of the zirconium oxide ceramic film has higher activity, and the formed zirconium oxide ceramic film can be well bonded with the surface of the metal and also can be well bonded with a subsequent film required to be coated; and compared with a silane technology, the production method has a wider application range and high adaptability.
Description
Technical field
The present invention relates to a kind of metal surface treatment technology, particularly a kind of metal treatment fluid and production method thereof that contains the rare earth cerium.
Background technology
Phosphatization is carried out in the metallic surface, all is the sheet metal component application pre-treating process of (containing electrophoresis, electrostatic spraying) usually, use T﹠B, but this method has very big pollution to environment and operator, is seeking other substitute technology at present.
In order to substitute the phosphorization technology of high pollution, having a kind of at present is the silane technology, and another kind is ceramic technology, and their without phosphorus, heavy metal frees increase and are combined with paint film.
Chinese patent application number is a kind of environment-friendly type metal surface finishing agent of 200910116134.9 and preparation method thereof, disclose a kind of with the membrane-forming agent wetting back adding of the aqueous solution that contains dispersion agent coupling agent, dispersed with stirring is to obtaining stable colloid, what add water miscible Si or IV family element again contains the F complex compound, adding as the water of the acid of stablizer and surplus and the pH value that is adjusted to system again is 1.0~3.0, namely obtains environment-friendly type metal surface finishing agent.Be diluted with water to the working fluid of pH value 3.0~6.0 during use, adopt immersion or spray mode that pending clean metallic surfaces is contacted with the environment-friendly type metal surface finishing agent of this invention, can obtain the compound conversion rete of micro-crystalline ceramic; Characteristics such as this invention treatment agent has the performance index that are better than or are equal to existing zinc system, phosphating liquor of iron series, has environmental protection, harmless, subzero treatment, low slag and need not to do table and transfer, and is simple to operation; It is the new generation of environment protection product that can replace the conventional metals surface treatment agent.But this metal conditioner, still the activity of security deposit's metal surface rete better can't reach the long-term combination with paint film.
Summary of the invention
The objective of the invention is to provide in order to solve above-mentioned the deficiencies in the prior art a kind of bonderizing that substitutes the metallic surface, form ceramic membrane in the metallic surface, and the surfactivity of raising metallic surface ceramic membrane, thereby a kind of metal treatment fluid and the production method thereof that contains the rare earth cerium in conjunction with fastness of raising metallic surface and paint film.
To achieve these goals, a kind of metal treatment fluid that contains the rare earth cerium that the present invention is designed is characterized in that prescription consists of: 0.5 part to 2 parts of fluorine zirconic acid, 1.5 parts to 3.5 parts of zinc molybdates, 0.2 part to 1 part of SODIUMNITRATE, 0.04 part to 0.06 part of disodium ethylene diamine tetraacetate, 0.4 part to 0.6 part of Sodium Fluoride, 0.2 part to 0.8 part of cerous nitrate, 100 parts in water.
A kind of metal treatment fluid and production method thereof that contains the rare earth cerium provided by the invention, it comprises the reactor that adopts water tank, header tank and band to stir, and it is characterized in that processing step is:
1) produce before earlier with industrial tap water to cleaning in the reactor, again with alcoholic solvent further to cleaning in the reactor, wash number is not less than twice, each stirring and washing time was not less than five minutes, did not contain pure soluble substance in the maintenance reactor;
2) pure water is evacuated to header tank from water tank, injects reactor by measuring the back;
3) finished product pure water injection rate control per ton is at 990kg, and error control is in positive 5kg scope;
4) start the stirring back and inject SODIUMNITRATE, rotating speed is controlled at this 30r/min to 60r/min;
5) treat to inject zinc molybdate after SODIUMNITRATE is fully dissolved;
6) continue to stir after 30 minutes, inject fluorine zirconic acid, disodium ethylene diamine tetraacetate, Sodium Fluoride successively, wait to inject raw material and all dissolve back adding cerous nitrate;
7) continue to stir after 15 minutes, regulate and control the liquid pH value about 2.0 with sodium hydroxide or nitric acid;
8) stop after pH value is stabilized in about 2.0 stirring and carry out the can of branch bucket;
No longer need cleaning equipment again when 9) producing continuously.
Optimal selection prescription of the present invention is 1 part of fluorine zirconic acid, 2.5 parts of zinc molybdates, 0.5 part of SODIUMNITRATE, 0.05 part of disodium ethylene diamine tetraacetate, 0.5 part of Sodium Fluoride, 0.5 part of cerous nitrate, 100 parts in water.
A kind of metal treatment fluid and production method thereof that contains the rare earth cerium provided by the invention, adopt ceramic technology, by brushing, spray or soaking and amass behind the metallic surface, can form the zirconia ceramics film in the metallic surface, and under the effect of rare earth element cerous nitrate, improved the activity of the zirconia ceramics film of metallic surface formation greatly, compare with similar ceramic technology, its surface has stronger activity, make the zirconia ceramics film of formation form good binding with the metallic surface, can keep good binding with the follow-up paint film of coating that needs again again; Use more face width, better adaptability than the silane technology.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Embodiment 1:
A kind of metal treatment fluid that contains the rare earth cerium that present embodiment provides, its prescription consists of: 1 part of fluorine zirconic acid, 2.5 parts of zinc molybdates, 0.5 part of SODIUMNITRATE, 0.05 part of disodium ethylene diamine tetraacetate, 0.5 part of Sodium Fluoride, 0.5 part of cerous nitrate, 100 parts in water.
Its production method comprises the reactor that adopts water tank, header tank and band to stir, and processing step is:
1) produce before earlier with industrial tap water to cleaning in the reactor, again with alcoholic solvent further to cleaning in the reactor, wash number is not less than twice, each stirring and washing time was not less than five minutes, did not contain pure soluble substance in the maintenance reactor;
2) pure water is evacuated to header tank from water tank, injects reactor by measuring the back;
3) finished product pure water injection rate control per ton is at 990kg, and error control is in positive 5kg scope;
4) start the stirring back and inject SODIUMNITRATE, rotating speed is controlled at this 30r/min to 60r/min;
5) treat to inject zinc molybdate after SODIUMNITRATE is fully dissolved;
6) continue to stir after 30 minutes, inject fluorine zirconic acid, disodium ethylene diamine tetraacetate, Sodium Fluoride successively, wait to inject raw material and all dissolve back adding cerous nitrate;
7) continue to stir after 15 minutes, regulate and control the liquid pH value about 2.0 with sodium hydroxide or nitric acid;
8) stop after pH value is stabilized in about 2.0 stirring and carry out the can of branch bucket, every barrel of net weight control is being not less than 25+0.1kg.
A kind of metal treatment fluid and the production method thereof that contains the rare earth cerium that obtains according to above-mentioned prescription, the metal parts of the light face low-carbon steel material that will handle during use was immersed in the metal surface treating liquid that present embodiment provides 1 minute, form the zirconia ceramics film, pass through under 180 centigradetemperatures 10 fens clock times of zirconia ceramics film burin-in process, adopt spectrographic technique that it is carried out surface-active test then, reach and receive crystalline substance, after coating paint film again, under 35 centigradetemperatures, tested through 500 hour time, its corrosion-resistant index reaches the salt-fog test standard.
Embodiment 2:
A kind of metal treatment fluid that contains the rare earth cerium that present embodiment provides, its prescription consists of: 0.5 part of fluorine zirconic acid, 1.5 parts of zinc molybdates, 0.2 part of SODIUMNITRATE, 0.04 part of disodium ethylene diamine tetraacetate, 0.4 part of Sodium Fluoride, 0.2 part of cerous nitrate, 100 parts in water.Production method is with embodiment 1.
A kind of metal treatment fluid and the production method thereof that contains the rare earth cerium that obtains according to above-mentioned prescription, the metal parts of the hair side low-carbon steel material that will handle during use was immersed in the metal surface treating liquid that present embodiment provides 2 minutes, form the zirconia ceramics film, pass through under 200 centigradetemperatures 20 fens clock times of zirconia ceramics film burin-in process, adopt spectrographic technique that it is carried out surface-active test then, reach and receive crystalline substance, after coating paint film again, under 35 centigradetemperatures, tested through 500 hour time, its corrosion-resistant index reaches the salt-fog test standard.
Embodiment 3:
A kind of metal treatment fluid that contains the rare earth cerium that present embodiment provides, its prescription consists of: 2 parts of fluorine zirconic acids, 3.5 parts of zinc molybdates, 1 part of SODIUMNITRATE, 0.06 part of disodium ethylene diamine tetraacetate, 0.6 part of Sodium Fluoride, 0.8 part of cerous nitrate, 100 parts in water, its production method is identical with embodiment 1.
A kind of metal treatment fluid and the production method thereof that contains the rare earth cerium that obtains according to the prescription of present embodiment, the metal parts of the zinc plated mild carbon steel material that will handle during use was immersed in the metal surface treating liquid that present embodiment provides 0.5 minute, form the zirconia ceramics film, pass through under 160 centigradetemperatures 15 fens clock times of zirconia ceramics film burin-in process, adopt spectrographic technique that it is carried out surface-active test then, reach and receive crystalline substance, after coating paint film again, under 35 centigradetemperatures, tested through 500 hour time, its corrosion-resistant index reaches the salt-fog test standard.
Claims (2)
1. production method that contains the metal treatment fluid of rare earth cerium, it comprises adopts reactor that water tank, header tank and band stir and by the metal treatment liquid formula of 0.5 part to 2 parts of fluorine zirconic acid, 1.5 parts to 3.5 parts of zinc molybdates, 0.2 part to 1 part of SODIUMNITRATE, 0.04 part to 0.06 part of disodium ethylene diamine tetraacetate, 0.4 part to 0.6 part of Sodium Fluoride, 0.2 part to 0.8 part of cerous nitrate, 100 parts of rare earth ceriums of forming of water, it is characterized in that processing step is:
1) produce before earlier with industrial tap water to cleaning in the reactor, again with alcoholic solvent further to cleaning in the reactor, wash number is not less than twice, each stirring and washing time was not less than five minutes, did not contain pure soluble substance in the maintenance reactor;
2) pure water is evacuated to header tank from water tank, injects reactor by measuring the back;
3) finished product pure water injection rate control per ton is at 990kg, and error control is in positive 5kg scope;
4) start the stirring back and inject SODIUMNITRATE, rotating speed is controlled at this 30 r/min to 60r/min;
5) treat to inject zinc molybdate after SODIUMNITRATE is fully dissolved;
6) continue to stir after 30 minutes, inject fluorine zirconic acid, disodium ethylene diamine tetraacetate, Sodium Fluoride successively, wait to inject raw material and all dissolve back adding cerous nitrate;
7) continue to stir after 15 minutes, regulate and control liquid pH value 2.0 with sodium hydroxide or nitric acid;
8) the pH value stabilization stops after about 2.0 stirring and carries out the can of branch bucket.
2. a kind of production method that contains the metal treatment fluid of rare earth cerium according to claim 1 is characterized in that the prescription that adopts consists of: 1 part of fluorine zirconic acid, 2.5 parts of zinc molybdates, 0.5 part of SODIUMNITRATE, 0.05 part of disodium ethylene diamine tetraacetate, 0.5 part of Sodium Fluoride, 0.5 part of cerous nitrate, 100 parts in water.
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CN102787313B (en) * | 2012-07-19 | 2014-05-07 | 华南理工大学 | Treatment solution for preparing molybdenum-cerium composite conversion membrane on surface of magnesium alloy, and treatment method thereof |
CN102808172B (en) * | 2012-08-24 | 2014-04-02 | 安徽启明表面技术有限公司 | Universal environment-friendly non-phosphorus phosphating solution |
US10435806B2 (en) | 2015-10-12 | 2019-10-08 | Prc-Desoto International, Inc. | Methods for electrolytically depositing pretreatment compositions |
CN106194610A (en) * | 2016-08-31 | 2016-12-07 | 常熟市强盛电力设备有限责任公司 | Wind power generator rotor |
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