CN103374714A - Zinc-calcium series phosphating solution for metal cold-drawing - Google Patents

Zinc-calcium series phosphating solution for metal cold-drawing Download PDF

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Publication number
CN103374714A
CN103374714A CN 201210109403 CN201210109403A CN103374714A CN 103374714 A CN103374714 A CN 103374714A CN 201210109403 CN201210109403 CN 201210109403 CN 201210109403 A CN201210109403 A CN 201210109403A CN 103374714 A CN103374714 A CN 103374714A
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China
Prior art keywords
zinc
calcium series
metal
calcium
cold drawing
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Pending
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CN 201210109403
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Chinese (zh)
Inventor
孙雪峰
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SHANGHAI DINGXU CHEMICAL PRODUCT Co Ltd
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SHANGHAI DINGXU CHEMICAL PRODUCT Co Ltd
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Priority to CN 201210109403 priority Critical patent/CN103374714A/en
Publication of CN103374714A publication Critical patent/CN103374714A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a zinc-calcium series phosphating solution for metal cold-drawing. The zinc-calcium series phosphating solution is an aqueous solution consisting of the following components in proportion by weight: 315 KG of phosphoric acid, 75 KG of zinc oxide, 400 KG of calcium nitrate, 200 KG of zinc nitrate, 50 KG of diluted nitric acid, 75 KG of additive and 300 KG of water. By adopting the proportion, the zinc-calcium series phosphating solution for metal cold-drawing disclosed by the invention is capable of forming a layer of compact phosphating composite film on the metal surface within short time in a cold-drawing process of a metal disc; the phosphating composite film has the beneficial effects of being fine in crystallization, good in corrosion resistance performance, strong in rust-proof capacity, capable of obviously improving the binding force and adhesion force of a metal base body and a coating, unlikely to drop, quick in phosphating speed, low in cost, stable in process and the like.

Description

The cold drawing of metal Zinc-calcium series phosphatating liquid
Technical field
The present invention relates to metallic surface Chemical Preservation technical field, relate in particular to a kind of cold drawing of metal Zinc-calcium series phosphatating liquid.
Background technology
The phosphatization of metallic surface is a kind of electrochemical reaction that forms the phosphate chemical conversion film in the metallic surface, and formed phosphoric acid salt conversion film is called again phosphatize phosphate coat.The main purpose of phosphatization is for the metallic surface provides protection, prevents that to a certain extent metal is corroded, and also is used for simultaneously the front bottoming of japanning, improves sticking power and the anti-corrosion capability of paint film layer.In addition, rise in the metal cold complete processing, phosphatize phosphate coat also plays the antifriction lubrication.
The key problem in technology of phosphorization treatment process is the prescription of Phosphating Solution.Phosphating Solution of the prior art is to add calcium component in the Phosphating Solution of zinc phosphate, nitrate and free phosphoric acid mostly, is deposited on the phosphatize phosphate coat structure of metallic surface with optimization.But this class Phosphating Solution is a kind of be with the nitrite of capacity as accelerator, nitrite can endanger the healthy of workman, has a strong impact on environment.Another mode is to adopt superoxide as accelerator, but produces easily more sediment in the production process.
Therefore, those skilled in the art is devoted to develop a kind of well behaved cold drawing of metal Zinc-calcium series phosphatating liquid.
Summary of the invention
Because the defects of prior art, technical problem to be solved by this invention provides a kind of cold drawing of metal Zinc-calcium series phosphatating liquid.
For achieving the above object, the invention provides a kind of cold drawing of metal Zinc-calcium series phosphatating liquid, the aqueous solution that is formed by following weight ratio: phosphoric acid 315KG: zinc oxide 75KG: nitrocalcite 400KG: zinc nitrate 200KG: rare nitric acid 50KG: additive 75KG: water 300KG.
Preferably, technological temperature is 70 ℃-80 ℃.
Preferably, join groove concentration 8%.
Preferably, total acidity 35-45 point.
Preferably, free acidity 5-7 point.
Preferably, promoter concentration 1-2 point.
Preferably, the promotor degree is adjusted to 2 points in time below 30 ℃.
Preferably, the promotor degree is adjusted to 1 point in time more than 30 ℃.
The invention has the beneficial effects as follows:
Cold drawing of metal of the present invention is used Zinc-calcium series phosphatating liquid owing to adopt said ratio, in the cold-drawing technology of rosette, can form at short notice the phosphide composite film of one deck densification in the metallic surface, this phosphide composite film crystallization is fine and closely woven, corrosion resistance nature good, antirust ability is very strong, can obviously improve bonding force and the sticking power of metallic matrix and coating, difficult drop-off has the beneficial effects such as phosphatization speed is fast, cost is low, process stabilizing.
Cold drawing of metal of the present invention does not adopt the objectionable impuritiess such as nitrite with Zinc-calcium series phosphatating liquid, thereby without industrial pollution, phosphatization temperature is lower, can give birth to draw, and sediment is few, can reduce the waste of ingredients product, thereby cuts down expenses, and improves Working environment, increases benefit.
The present invention can need not heating installation in normal-temperature operation, removes baking operation from, save energy.In addition, tank liquor is stable, control is convenient, in that control well can life-time service under the prerequisite of total acidity, free acidity tank liquor.
Embodiment
Cold drawing of metal of the present invention is with Zinc-calcium series phosphatating liquid one specific embodiment, the aqueous solution that is comprised of following weight ratio: phosphoric acid 315KG: zinc oxide 75KG: nitrocalcite 400KG: zinc nitrate 200KG: rare nitric acid 50KG: additive 75KG: water 300KG.
Particularly, in force, the technological temperature of Phosphating Solution is 70 ℃-80 ℃, joins groove concentration 8%, total acidity 35-45 point, free acidity 5-7 point, promoter concentration 1-2 point.
Outstanding good ground, the promotor degree is adjusted to 2 points in time below 30 ℃, is adjusted to 1 point in time more than 30 ℃.
Zinc-calcium series phosphatating liquid of the present invention can adopt the aqueous solution that contains phosphoric acid, nitrocalcite, contains the aqueous solution of zinc oxide, zinc nitrate, and the aqueous solution that contains additive forms.
Zinc-calcium series phosphatating liquid of the present invention can adopt the material of above-mentioned weight ratio mixed mutually, and dissolving is stirred, and controls the method preparation that the phosphoric acid add-on is regulated PH again.
The bonderizing operation is: degreasing-washing-washing (overflow and wash)-rust cleaning-washing (overflow)-surface adjustment-phosphatization-washing-washing (overflow and wash)-dry standby dusting.
The Phosphating Solution cell body should be stainless steel, heavy wall plastic plate, or carbon steel (inside lining anti-corrosive lining).Nozzle should be stainless steel, and pipe arrangement and pump should be stainless steel.Drill traverse time: 15-25 minute.
When Phosphating Solution Free Acid degree is on the low side, can add primary zinc phosphate or Mazhev salt (5~6 grams per liters, high 1 point of free acidity, simultaneously total acidity 5 points that raise).If free acidity is in specialized range, and total acidity is excessively low, can add zinc nitrate or manganous nitrate.If free acidity is high, can add yellow soda ash; Can add water when total acidity is high.
When concrete phosphatization was implemented, the requirement that workpiece is put is: workpiece can not be crowded together mutually, can not set up, and can not form air bag, and the surface that does not reach Phosphating Solution can not be arranged.After workpiece enters tank liquor, shake up and down several times, with excluding air.In groove, can use pressurized air to stir, improve effect.
Precaution when going out groove are: swinging workpiece increases drainage effect.Above tank liquor, to stop the regular hour, tank liquor is dripped to the greatest extent, carry secretly to avoid tank liquor, mutually pollute, cause the waste of medicine and tank liquor change in concentration to affect treatment effect.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variations.Therefore, all in the art technician all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (8)

1. cold drawing of metal Zinc-calcium series phosphatating liquid, the aqueous solution that is formed by following weight ratio: phosphoric acid 315KG: zinc oxide 75KG: nitrocalcite 400KG: zinc nitrate 200KG: rare nitric acid 50KG: additive 75KG: water 300KG.
2. cold drawing of metal Zinc-calcium series phosphatating liquid as claimed in claim 1, wherein, technological temperature is 70 ℃-80 ℃.
3. cold drawing of metal Zinc-calcium series phosphatating liquid as claimed in claim 1 wherein, is joined groove concentration 8%.
4. cold drawing of metal Zinc-calcium series phosphatating liquid as claimed in claim 1, wherein, total acidity 35-45 point.
5. cold drawing of metal Zinc-calcium series phosphatating liquid as claimed in claim 1, wherein, free acidity 5-7 point.
6. cold drawing of metal Zinc-calcium series phosphatating liquid as claimed in claim 1, wherein, promoter concentration 1-2 point.
7. cold drawing of metal Zinc-calcium series phosphatating liquid as claimed in claim 6, wherein, the promotor degree is adjusted to 2 points in time below 30 ℃.
8. cold drawing of metal Zinc-calcium series phosphatating liquid as claimed in claim 6, wherein, the promotor degree is adjusted to 1 point in time more than 30 ℃.
CN 201210109403 2012-04-13 2012-04-13 Zinc-calcium series phosphating solution for metal cold-drawing Pending CN103374714A (en)

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CN 201210109403 CN103374714A (en) 2012-04-13 2012-04-13 Zinc-calcium series phosphating solution for metal cold-drawing

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Application Number Priority Date Filing Date Title
CN 201210109403 CN103374714A (en) 2012-04-13 2012-04-13 Zinc-calcium series phosphating solution for metal cold-drawing

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103668148A (en) * 2013-12-19 2014-03-26 湖南金裕化工有限公司 Medium-temperature zinc and calcium series high corrosion resistance phosphating solution and preparation method thereof
CN103993307A (en) * 2014-06-13 2014-08-20 贵州钢绳股份有限公司 Phosphating method of large-diameter high-carbon steel wire rod
CN105441926A (en) * 2016-01-12 2016-03-30 上海顶煦化学品有限公司 Novel plastic processing phosphating solution and preparation method thereof
CN107142470A (en) * 2017-03-28 2017-09-08 哈尔滨工程大学 Be conducive to improving the zinc cathode conversion film of corrosion stability of magnesium alloy and the preparation method of epoxy coating
CN112708875A (en) * 2020-12-21 2021-04-27 长治市龙翔表面技术有限公司 Zinc-calcium series phosphating solution
CN113481565A (en) * 2021-07-07 2021-10-08 安徽长江紧固件有限责任公司 Electrolytic phosphating solution for large-specification fasteners

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103668148A (en) * 2013-12-19 2014-03-26 湖南金裕化工有限公司 Medium-temperature zinc and calcium series high corrosion resistance phosphating solution and preparation method thereof
CN103668148B (en) * 2013-12-19 2016-08-17 湖南金裕环保科技有限公司 High anti-corrosion Phosphating Solution of middle temperature zinc cathode and preparation method thereof
CN103993307A (en) * 2014-06-13 2014-08-20 贵州钢绳股份有限公司 Phosphating method of large-diameter high-carbon steel wire rod
CN105441926A (en) * 2016-01-12 2016-03-30 上海顶煦化学品有限公司 Novel plastic processing phosphating solution and preparation method thereof
CN107142470A (en) * 2017-03-28 2017-09-08 哈尔滨工程大学 Be conducive to improving the zinc cathode conversion film of corrosion stability of magnesium alloy and the preparation method of epoxy coating
CN112708875A (en) * 2020-12-21 2021-04-27 长治市龙翔表面技术有限公司 Zinc-calcium series phosphating solution
CN113481565A (en) * 2021-07-07 2021-10-08 安徽长江紧固件有限责任公司 Electrolytic phosphating solution for large-specification fasteners
CN113481565B (en) * 2021-07-07 2022-05-10 安徽长江紧固件有限责任公司 Electrolytic phosphating method for large-size fasteners

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Application publication date: 20131030