CN101654785A - Steel surface compact oxide layer scavenging agent - Google Patents

Steel surface compact oxide layer scavenging agent Download PDF

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Publication number
CN101654785A
CN101654785A CN200910031926A CN200910031926A CN101654785A CN 101654785 A CN101654785 A CN 101654785A CN 200910031926 A CN200910031926 A CN 200910031926A CN 200910031926 A CN200910031926 A CN 200910031926A CN 101654785 A CN101654785 A CN 101654785A
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CN
China
Prior art keywords
steel
agent
iron
oxidation layer
rust
Prior art date
Application number
CN200910031926A
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Chinese (zh)
Inventor
仲跻和
Original Assignee
江苏海迅实业集团股份有限公司
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Publication date
Application filed by 江苏海迅实业集团股份有限公司 filed Critical 江苏海迅实业集团股份有限公司
Priority to CN200910031926A priority Critical patent/CN101654785A/en
Publication of CN101654785A publication Critical patent/CN101654785A/en

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Abstract

The invention discloses a steel surface compact oxide layer scavenging agent, which is composed of mixed acid, oxidizer, surfactant, corrosion inhibitor, anti-rust agent and pure water with the weightpercent of the components as follows: 5-20% of H2SO4, 10-30% of HCl, 0.5-3% of oxalic acid, 0.25-3.5% of oxidizer, 1-3% of surfactant, 0.25-3% of corrosion inhibitor, 1-3% of anti-rust agent and remainder of water; the scavenging agent is colorless transparent, has no pungent smell, has obvious effect in scavenging steel surface compact oxide layer and rust, and is sucked on pure steel surface compact to form a film, the contact between the scavenging agent and metal can be isolated, the over-corrosion of steel and hydrogen embrittlement can be avoided; the invention has low cost, small investment, simplified technique and good effect in steel surface treatment, and needs no temperature control equipment.

Description

Removing agent for iron and steel surface compact oxidation layer
Technical field
The present invention relates to the processing of steel surface, particularly a kind of removing agent for iron and steel surface compact oxidation layer.
Background technology
Steel surface is handled; usually adopt and clean; methods such as brushing; it is relatively good that ubiquity is removed the metallic surface corrosion; but scale removal is not thorough; particularly remove new steel surface compact oxidation layer difficulty more; and operation is more; complex process and time are long, the temperature requirements height, and result is undesirable; oxide skin is removed unclean; do not reach quality standard, in order effectively to remove the iron and steel compact oxidation layer, large-scale component all adopts " sandblast " to handle at present; but equipment; investment such as factory building needs hundreds thousand of to more than 1,000,000 yuan; want water;; air compressor; lay airduct; steel sand sprays, and atmospheric pollution is serious, and labour protection requires tight; the cost height, labour intensity is big.
Summary of the invention
The objective of the invention is to overcome the shortcoming that prior art exists, a kind of removing agent for iron and steel surface compact oxidation layer is provided, this scavenging agent can effectively be removed iron and steel surface compact oxidation layer, and the removing effect to the steel surface corrosion is also very remarkable, simple to operate, and speed is fast, stable performance, safe and reliable, pollute for a short time, cost is low.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be:
Removing agent for iron and steel surface compact oxidation layer of the present invention is characterized in that: be made up of mixing acid, oxygenant, tensio-active agent, inhibiter, rust-preventive agent and pure water.
The weight percent of above-mentioned removing agent for iron and steel surface compact oxidation layer each component is as follows:
H 2SO 4For 5%-20% HCl is 10%-30%
Oxalic acid is 0.25%-3.5% for the 0.5%-3% oxygenant
Tensio-active agent is 0.25%-3% for the 1%-3% inhibiter
Rust-preventive agent is pure water for the 1%-3% surplus.
Described oxygenant is a hexafluorophosphoric acid, and its molecular formula is H 2PO 3F utilizes the strong oxidizing property of hexafluorophosphoric acid that mixed acid solution removal iron and steel surface compact oxidation layer is played a driving role, and particularly zone of oxidation of some difficult reactions assist in removing the realization of purpose.
Described tensio-active agent is a nonionic surface active agent, and this nonionic surface active agent is aliphatic alcohol polyoxyethylene or alkylol amide.
Described alkylol amide is a lauroyl monoethanolamine.
Described aliphatic alcohol polyoxyethylene is that the polymerization degree is that 15 the fatty alcohol-polyoxyethylene ether (O-15) or the polymerization degree are that 20 the fatty alcohol-polyoxyethylene ether (O-20) or the polymerization degree are that 35 the fatty alcohol-polyoxyethylene ether (O-35) or the polymerization degree are 40 fatty alcohol-polyoxyethylene ether (O-40).
Described inhibiter is hexamethylenetetramine or if fourth or thiocarbamide or sodium sulphite or pyrimidine.
Described rust-preventive agent is dinonyl naphthalene sulfonate barium or sodium lauryl sulphate or petroleum sodium sulfonate, can effectively remove the rust staining of steel surface and prevent that steel surface from forming rust staining once more, guarantees the bright and clean of steel surface.
The present invention compared with prior art has following advantage: it is strong that the present invention removes ability, the removal time is short, save manpower and man-hour, increase work efficiency, also have characteristics in pure steel surface absorption film-forming, can isolate contacting of scavenging agent and metal, prevent the generation of iron and steel excessive erosion and hydrogen embrittlement phenomenon; It is acid, lower to the corrodibility of equipment, safe and reliable that this scavenging agent is, and is beneficial to the reduction equipment cost; In addition, this scavenging agent is water base scavenging agent.
Tensio-active agent in this scavenging agent has characteristics such as excellent lubrication, emulsification, wetting, infiltration and cleaning, and is favourable to the removal of compact oxidation layer.
The molecular adsorption of the inhibiter in this scavenging agent is in the metallic surface; form a very thin protective membrane; when other ionic reaction in it and metallic surface or the solution; its resultant of reaction covers on the metallic surface; thereby the inhibition corrosion process, thereby effectively avoided the generation of excessive erosion and hydrogen embrittlement phenomenon.
Steel surface through the present invention handles can both appear except that the iron and steel true qualities as mechanical component, member, sheet material, pipeline etc., the cleaning light, and smooth finish can reach about the GB3 level.
Embodiment
Embodiment 1: configuration 10kg scavenging agent.
Taking by weighing configuration weight respectively is the sulfuric acid of 1.5kg, the hydrochloric acid of 2kg, and the oxalic acid of 0.2kg, the hexafluorophosphoric acid of 0.2kg, the polymerization degree of 0.1kg is 20 aliphatic alcohol polyoxyethylene (O-20), the sodium sulphite of 0.2kg, the sodium lauryl sulphate of 0.1kg;
Successively above-mentioned each component is joined in the 5.7kg pure water at ambient temperature, be stirred to the uniform aqueous solution and get final product, the pH value of this clean-out system is 3.8.
Embodiment 2: configuration 10kg scavenging agent.
Taking by weighing configuration weight respectively is the sulfuric acid of 1kg, the hydrochloric acid of 2kg, and the oxalic acid of 0.3kg, the hexafluorophosphoric acid of 0.1kg, the polymerization degree of 0.3kg is 35 fatty alcohol-polyoxyethylene ether (O-35), the hexamethylenetetramine of 0.2kg, the dinonyl naphthalene sulfonate barium of 0.1kg, standby; Successively with above-mentioned each component, join in the 6kg pure water at ambient temperature, be stirred to the uniform aqueous solution and get final product.The pH value of this clean-out system is 4.6, and this example is preferred embodiment.
Embodiment 3: configuration 10kg scavenging agent.
Taking by weighing configuration weight respectively is the sulfuric acid of 0.5kg, the hydrochloric acid of 3kg, and the oxalic acid of 0.1kg, the hexafluorophosphoric acid of 0.3kg, the polymerization degree of 0.3kg is 15 fatty alcohol-polyoxyethylene ether (O-15), the thiocarbamide of 0.2kg, the petroleum sodium sulfonate of 0.1kg, standby; Successively with above-mentioned each component, join in the 5.9kg pure water at ambient temperature, be stirred to the uniform aqueous solution and get final product.The pH value of this clean-out system is 3.7.
Embodiment 4: configuration 10kg scavenging agent.
Taking by weighing configuration weight respectively is the sulfuric acid of 2kg, the hydrochloric acid of 1kg, and the oxalic acid of 0.2kg, the hexafluorophosphoric acid of 0.3kg, the polymerization degree of 0.3kg is 40 fatty alcohol-polyoxyethylene ether (O-40), the pyrimidine of 0.2kg, the petroleum sodium sulfonate of 0.1kg, standby; Successively with above-mentioned each component, join in the 5.9kg pure water at ambient temperature, be stirred to the uniform aqueous solution and get final product.The pH value of this clean-out system is 4.2.
During cleaning, remove iron and steel zero device surface greasy dirt earlier, and use flushing with clean water, the zero device that will clean then directly is immersed in the scavenging agent liquid.According to the thickness of compact oxidation layer, the time that corrosion degree decides immersion, the fastest 5~10 minutes, the slowest 0.5~5 hour, take out.Can find that iron and steel zero device surface non-oxidation layer is residual, any surface finish is cleaned iron and steel zero still acomia crow of device surface and rust staining phenomenon in back 24 hours.

Claims (7)

1, a kind of removing agent for iron and steel surface compact oxidation layer is characterized in that: be made up of mixing acid, oxygenant, tensio-active agent, inhibiter, rust-preventive agent and pure water, the weight percent of above-mentioned each component is as follows:
H 2SO 4For 5%-20% HCl is 10%-30%
Oxalic acid is 0.25%-3.5% for the 0.5%-3% oxygenant
Tensio-active agent is 0.25%-3% for the 1%-3% inhibiter
Rust-preventive agent is pure water for the 1%-3% surplus.
2, a kind of removing agent for iron and steel surface compact oxidation layer according to claim 1 is characterized in that: described oxygenant is a hexafluorophosphoric acid.
3, a kind of removing agent for iron and steel surface compact oxidation layer according to claim 1, it is characterized in that: described tensio-active agent is a nonionic surface active agent, this nonionic surface active agent is aliphatic alcohol polyoxyethylene or alkylol amide.
4, a kind of removing agent for iron and steel surface compact oxidation layer according to claim 1, it is characterized in that: described alkylol amide is a lauroyl monoethanolamine.
5, a kind of removing agent for iron and steel surface compact oxidation layer according to claim 1 is characterized in that: described aliphatic alcohol polyoxyethylene is that the polymerization degree is that 15 the fatty alcohol-polyoxyethylene ether (0-15) or the polymerization degree are that 20 the fatty alcohol-polyoxyethylene ether (0-20) or the polymerization degree are that 35 the fatty alcohol-polyoxyethylene ether (0-35) or the polymerization degree are 40 fatty alcohol-polyoxyethylene ether (0-40).
6, a kind of removing agent for iron and steel surface compact oxidation layer according to claim 1 is characterized in that: described inhibiter is hexamethylenetetramine or if fourth or thiocarbamide or sodium sulphite or pyrimidine.
7, a kind of removing agent for iron and steel surface compact oxidation layer according to claim 1 is characterized in that: described rust-preventive agent is dinonyl naphthalene sulfonate barium or sodium lauryl sulphate or petroleum sodium sulfonate.
CN200910031926A 2009-07-03 2009-07-03 Steel surface compact oxide layer scavenging agent CN101654785A (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102628848A (en) * 2012-04-19 2012-08-08 武汉钢铁(集团)公司 Method for measuring content of iron in silicon steel surface oxidation layer
CN102653868A (en) * 2012-03-14 2012-09-05 王福平 Novel stainless steel acid-washing passivation liquid
CN103132089A (en) * 2013-03-13 2013-06-05 江苏矽研半导体科技有限公司 Rust removal activating agent solution as well as preparation and use methods thereof
CN103361658A (en) * 2013-07-29 2013-10-23 宜昌江峡船用机械有限责任公司 Method for removing screw hole corrosion
CN103422101A (en) * 2012-05-22 2013-12-04 苏州一方金属表面处理科技有限公司 Cleaning operating solution for stainless steel and iron member composite boards
CN103422105A (en) * 2012-05-22 2013-12-04 苏州一方金属表面处理科技有限公司 Detergent for stainless steel and iron member composite boards and applications of the detergent
CN103422104A (en) * 2012-05-22 2013-12-04 苏州一方金属表面处理科技有限公司 Rust remover for stainless steel and iron member composite boards
CN103469220A (en) * 2013-09-16 2013-12-25 中国振华集团永光电子有限公司 Composition for removing oxide layer of alloy lead frame and using method of composition
CN103820797A (en) * 2014-01-28 2014-05-28 浙江工业大学 Stainless steel oxidizing layer cleaning agent and preparation method and application thereof
CN104138867A (en) * 2014-06-23 2014-11-12 梧州恒声电子科技有限公司 Plastic cleaning method
CN106226145A (en) * 2016-05-17 2016-12-14 江苏泰富兴澄特殊钢有限公司 A kind of method removing iron and steel inefficacy fracture surface covering
CN106637234A (en) * 2015-11-16 2017-05-10 安徽鸿源新型润滑材料有限公司 Derusting purifying agent
CN106835156A (en) * 2017-01-20 2017-06-13 国网山东省电力公司菏泽供电公司 A kind of old wire oxide layer processing method
CN106958025A (en) * 2017-05-19 2017-07-18 哈焊所华通(常州)焊业股份有限公司 The acid cleaning process of welding wire steel surface preparation
CN107012471A (en) * 2017-05-04 2017-08-04 太仓协鑫光伏科技有限公司 A kind of duct cleaning agent and its application
CN110004438A (en) * 2019-04-16 2019-07-12 广东中赫建筑装饰设计工程有限公司 304 steel surface treatment methods
CN110129808A (en) * 2019-04-25 2019-08-16 广州市凯之达化工有限公司 A kind of marine piping rust remover
CN111218690A (en) * 2020-02-10 2020-06-02 谭春芳 Strong rust remover, use method and preparation method

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102653868B (en) * 2012-03-14 2016-01-13 王福平 Environment-friendly type acid-washing stainless steel passivating solution
CN102653868A (en) * 2012-03-14 2012-09-05 王福平 Novel stainless steel acid-washing passivation liquid
CN102628848A (en) * 2012-04-19 2012-08-08 武汉钢铁(集团)公司 Method for measuring content of iron in silicon steel surface oxidation layer
CN103422101A (en) * 2012-05-22 2013-12-04 苏州一方金属表面处理科技有限公司 Cleaning operating solution for stainless steel and iron member composite boards
CN103422105A (en) * 2012-05-22 2013-12-04 苏州一方金属表面处理科技有限公司 Detergent for stainless steel and iron member composite boards and applications of the detergent
CN103422104A (en) * 2012-05-22 2013-12-04 苏州一方金属表面处理科技有限公司 Rust remover for stainless steel and iron member composite boards
CN103132089A (en) * 2013-03-13 2013-06-05 江苏矽研半导体科技有限公司 Rust removal activating agent solution as well as preparation and use methods thereof
CN103361658A (en) * 2013-07-29 2013-10-23 宜昌江峡船用机械有限责任公司 Method for removing screw hole corrosion
CN103361658B (en) * 2013-07-29 2015-10-07 宜昌江峡船用机械有限责任公司 The removing method of screw corrosion
CN103469220A (en) * 2013-09-16 2013-12-25 中国振华集团永光电子有限公司 Composition for removing oxide layer of alloy lead frame and using method of composition
CN103469220B (en) * 2013-09-16 2016-04-27 中国振华集团永光电子有限公司 Remove the compoistion and method of use of alloy lead frames zone of oxidation
CN103820797A (en) * 2014-01-28 2014-05-28 浙江工业大学 Stainless steel oxidizing layer cleaning agent and preparation method and application thereof
CN103820797B (en) * 2014-01-28 2016-05-18 浙江工业大学 A kind of oxidizing layer of stainless steel cleaning agent and its preparation method and application
CN104138867A (en) * 2014-06-23 2014-11-12 梧州恒声电子科技有限公司 Plastic cleaning method
CN106637234A (en) * 2015-11-16 2017-05-10 安徽鸿源新型润滑材料有限公司 Derusting purifying agent
CN106226145A (en) * 2016-05-17 2016-12-14 江苏泰富兴澄特殊钢有限公司 A kind of method removing iron and steel inefficacy fracture surface covering
CN106835156A (en) * 2017-01-20 2017-06-13 国网山东省电力公司菏泽供电公司 A kind of old wire oxide layer processing method
CN106835156B (en) * 2017-01-20 2018-09-21 国网山东省电力公司菏泽供电公司 A kind of old conducting wire oxide layer processing method
CN107012471A (en) * 2017-05-04 2017-08-04 太仓协鑫光伏科技有限公司 A kind of duct cleaning agent and its application
CN106958025A (en) * 2017-05-19 2017-07-18 哈焊所华通(常州)焊业股份有限公司 The acid cleaning process of welding wire steel surface preparation
CN110004438A (en) * 2019-04-16 2019-07-12 广东中赫建筑装饰设计工程有限公司 304 steel surface treatment methods
CN110129808A (en) * 2019-04-25 2019-08-16 广州市凯之达化工有限公司 A kind of marine piping rust remover
CN111218690A (en) * 2020-02-10 2020-06-02 谭春芳 Strong rust remover, use method and preparation method

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Open date: 20100224