CN104805457A - Pickling solution for stability of rust layer of bare steel - Google Patents
Pickling solution for stability of rust layer of bare steel Download PDFInfo
- Publication number
- CN104805457A CN104805457A CN201510250639.XA CN201510250639A CN104805457A CN 104805457 A CN104805457 A CN 104805457A CN 201510250639 A CN201510250639 A CN 201510250639A CN 104805457 A CN104805457 A CN 104805457A
- Authority
- CN
- China
- Prior art keywords
- accounts
- percent
- account
- pickle solution
- hcl
- 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
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses pickling solution for stability of a rust layer of bare steel. The pickling solution comprises the following components in percentage by weight: 2 to 18 percent of HCl, 1 to 10 percent of H3PO4, 0.5 to 5 percent of HNO3, 1 to 10 percent of thiourea, 0.1 to 5 percent of hexamethylenetetramine, 0.1 to 5 percent of carboxyl cellulose salt and the balance of water. The pickling solution can be used for directly pickling a hot rolled plate in a range of 60 to 90 DEG C; a small quantity of acid mist is generated under the high temperature condition; the over etching and hydrogen embrittlement phenomena of a workpiece also can be avoided; product quality is improved.
Description
Technical field
The invention belongs to metal protection technical field, specifically refer to a kind of pickle solution stable for naked steel rusty scale.
Background technology
Metallic corrosion is a kind of failure procedure of metal under the effect of environmental corrosion medium, and being a kind of completely spontaneous inevitable spontaneous phenomenon of carrying out, is the inverse process of metallurgical production.Atomospheric corrosion causes the major reason of the early failures such as product, unit, structural part and destruction.The financial loss caused because of atomospheric corrosion is every year very surprising.Under air physical environment, it is a step-by-step procedure that naked steel forms stable protection rusty scale, needs considerable time, more than at least 3 years, and the naked steel surface had forms the time of form compact and stable rusty scale more than more than 10 years.Stablize in the process of rusty scale in formation, usually occur early stage rust liquid sagging and disperse polluting the phenomenon of surrounding environment.And the process of the rusty scale surface of stability carries out chemical treatment to naked steel surface exactly, directly generate stable fine and close rusty scale, form self-protection.After coating rusty scale surface of stability treatment agent, naked steel both can be avoided to use the phenomenon of initial stage yellow rust liquid sagging, preventing pollution, and stable protective rust can have been formed rapidly on its surface again, the corrosion speed of naked steel is tended towards stability.
Summary of the invention
The object of the present invention is to provide a kind of pickle solution stable for naked steel rusty scale, effectively can solve naked steel rusty scale stabilization and rust liquid flowing down problems.
For achieving the above object, the pickle solution stable for naked steel rusty scale designed by the present invention, its special special character is, in this pickle solution, the weight percent of each component is: HCl accounts for 2 ~ 18%, H
3pO
4account for 1 ~ 10%, HNO
3account for 0.5 ~ 5%, thiocarbamide accounts for 1 ~ 10%, hexamethylenetetramine accounts for 0.1 ~ 5%, carboxy cellulose salt accounts for 0.1 ~ 5%, all the other are water.
Further preferably, in this pickle solution, the weight percent of each component is: HCl accounts for 8 ~ 12%, H
3pO
4account for 4 ~ 7%, HNO
3account for 1.5 ~ 3.6%, thiocarbamide accounts for 4 ~ 6%, hexamethylenetetramine accounts for 1.5 ~ 3.0%, carboxy cellulose salt accounts for 1.5 ~ 3.0%, all the other are water.
Again further, in this pickle solution, the weight percent of each component is: HCl accounts for 10%, H
3pO
4account for 5.5%, HNO
3account for 2.6%, thiocarbamide accounts for 5%, hexamethylenetetramine accounts for 2.5%, carboxy cellulose salt accounts for 2.5%, water accounts for 71.9%.
The pickle solution mechanism of action stable for naked steel rusty scale of the present invention is:
In pickle solution, HCl, H
3pO
4, HNO
3free hydrogen ion can be provided, maintain solution acidity.H
3pO
4can reduce the corrosion speed of nitric acid to iron-based body, can produce thin phosphate coating simultaneously at workpiece surface, after being conducive to, the naked steel rusty scale of operation is stable.Nitric acid can be used for process Z 250 (Fe
3o
4) etc. the difficult oxide skin removed.Thiocarbamide, hexamethylenetetramine and carboxy cellulose salt are corrosion inhibition additive, can avoid the generation of workpiece surface excessive erosion, hydrogen embrittlement and acid mist.At use HCl, H
3pO
4, HNO
3during pickle solution, pickling time will strictly be grasped, careless slightly, and workpiece will produce excessive erosion phenomenon, also can produce acid mist and Hydrogen Brittleness Phenomena, and at HCl, H
3pO
4, HNO
3add thiocarbamide, hexamethylenetetramine and carboxy cellulose salt in pickle solution as corrosion inhibition additive, just can avoid these problems.Thiocarbamide, hexamethylenetetramine and carboxy cellulose salt are corrosion inhibition additive, and workpiece surface can be avoided to produce corrosion.Next process can not be carried out after workpiece pickling at once, need to deposit for some time, often produce corrosion, and at HCl, H
3pO
4, HNO
3add thiocarbamide, hexamethylenetetramine and carboxy cellulose salt in pickle solution as corrosion inhibition additive, can produce thin tectum at workpiece surface, depositing for some time after pickling also can not produce corrosion.
Pickle solution of the present invention does not contain chromium and nitrite, health environment-friendly; Meanwhile, pickle solution of the present invention can direct Hot Rolled and Pickled Sheet within the scope of 60 ~ 90 DEG C, and under hot conditions, acid mist is few, can also avoid workpiece excessive erosion and Hydrogen Brittleness Phenomena, improve the quality of products.
Embodiment
Below in conjunction with concrete embodiment, the pickle solution stable for naked steel rusty scale of the present invention is described in further detail.
Embodiment 1
For the pickle solution that naked steel rusty scale is stable, its each compositions in weight percentage is that HCl accounts for 18%, H
3pO
4account for 1%, HNO
3account for 0.5%, thiocarbamide accounts for 10%, and hexamethylenetetramine accounts for 0.1%, and carboxy cellulose salt accounts for 0.1%, and water accounts for 70.3%.
Embodiment 2
For the pickle solution that naked steel rusty scale is stable, its each compositions in weight percentage is that HCl accounts for 2%, H
3pO
4account for 10%, HNO
3account for 5%, thiocarbamide accounts for 1%, and hexamethylenetetramine accounts for 5%, and carboxy cellulose salt accounts for 5%, and water accounts for 72%.
Embodiment 3
For the pickle solution that naked steel rusty scale is stable, its each compositions in weight percentage is that HCl accounts for 5%, H
3pO
4account for 8%, HNO
3account for 4%, thiocarbamide accounts for 8%, and hexamethylenetetramine accounts for 0.5%, and carboxy cellulose salt accounts for 3%, and water accounts for 71.5%.
Embodiment 4
For the pickle solution that naked steel rusty scale is stable, its each compositions in weight percentage is that HCl accounts for 10%, H
3pO
4account for 5%, HNO
3account for 3%, thiocarbamide accounts for 5%, and hexamethylenetetramine accounts for 1.5%, and carboxy cellulose salt accounts for 1.5%, and water accounts for 74%.
Embodiment 5
For the pickle solution that naked steel rusty scale is stable, its each compositions in weight percentage is that HCl accounts for 15%, H
3pO
4account for 3%, HNO
3account for 1%, thiocarbamide accounts for 3%, and hexamethylenetetramine accounts for 3%, and carboxy cellulose salt accounts for 0.5%, and water accounts for 74.5%.
Embodiment 6
For the pickle solution that naked steel rusty scale is stable, its each compositions in weight percentage is, HCl accounts for 10%, H
3pO
4account for 5.5%, HNO
3account for 2.6%, thiocarbamide accounts for 5%, hexamethylenetetramine and carboxy cellulose salt respectively account for 2.5%, water accounts for 71.9%.
During use, raw material is hybridly prepared into pickle solution by ratio uniform described in each embodiment.Can be used for pickling under 60 ~ 90 DEG C of conditions, obviously improve the pickling quality of surface of steel plate, the coating property of operation naked steel rusty scale surface of stability treatment agent after improving.
Simultaneous test: adopt with a collection of weathering steel steel sample containing iron scale, the HCl pickling of comparative example steel sample operating weight per-cent 18%, pickling time is 15 seconds, the remaining pore in weathering steel steel sample surface, for the iron scale do not eliminated, in the coating procedure of rear operation rusty scale surface of stability coating processing agent, on weathering steel steel sample surface, occur pin hole, skin effect phenomenon, coating effect is bad.And use pickle solution of the present invention, surface of steel plate light, there is no remaining iron scale, deposit 7 days after pickling is complete, surface has no corrosion, in the coating procedure of rear operation rusty scale surface of stability coating processing agent, on weathering steel steel sample surface, there is not pin hole, skin effect phenomenon, apply respond well.
Claims (3)
1. for the pickle solution that naked steel rusty scale is stable, it is characterized in that: in this pickle solution, the weight percent of each component is: HCl accounts for 2 ~ 18%, H
3pO
4account for 1 ~ 10%, HNO
3account for 0.5 ~ 5%, thiocarbamide accounts for 1 ~ 10%, hexamethylenetetramine accounts for 0.1 ~ 5%, carboxy cellulose salt accounts for 0.1 ~ 5%, all the other are water.
2. the pickle solution stable for naked steel rusty scale according to claim 1, is characterized in that: in this pickle solution, the weight percent of each component is: HCl accounts for 8 ~ 12%, H
3pO
4account for 4 ~ 7%, HNO
3account for 1.5 ~ 3.6%, thiocarbamide accounts for 4 ~ 6%, hexamethylenetetramine accounts for 1.5 ~ 3.0%, carboxy cellulose salt accounts for 1.5 ~ 3.0%, all the other are water.
3. the pickle solution stable for naked steel rusty scale according to claim 1, is characterized in that: in this pickle solution, the weight percent of each component is: HCl accounts for 10%, H
3pO
4account for 5.5%, HNO
3account for 2.6%, thiocarbamide accounts for 5%, hexamethylenetetramine accounts for 2.5%, carboxy cellulose salt accounts for 2.5%, water accounts for 71.9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510250639.XA CN104805457A (en) | 2015-05-15 | 2015-05-15 | Pickling solution for stability of rust layer of bare steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510250639.XA CN104805457A (en) | 2015-05-15 | 2015-05-15 | Pickling solution for stability of rust layer of bare steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104805457A true CN104805457A (en) | 2015-07-29 |
Family
ID=53690637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510250639.XA Pending CN104805457A (en) | 2015-05-15 | 2015-05-15 | Pickling solution for stability of rust layer of bare steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104805457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894025A (en) * | 2017-04-14 | 2017-06-27 | 中国科学院海洋研究所 | The pickle of zero-g aircraft detection metallic material corrosion thing and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124788A (en) * | 1994-05-04 | 1996-06-19 | 孙永春 | Pickling paste for stainless steel |
| CN101586243A (en) * | 2009-06-16 | 2009-11-25 | 武汉钢铁(集团)公司 | A kind of hot rolled plate hydrochloric acid pickling corrosion inhibition accelerator |
| CN104513998A (en) * | 2013-09-26 | 2015-04-15 | 中国石油化工股份有限公司 | Corrosion inhibitor composition, applications thereof, and method using same to perform acid-washing on equipment |
-
2015
- 2015-05-15 CN CN201510250639.XA patent/CN104805457A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1124788A (en) * | 1994-05-04 | 1996-06-19 | 孙永春 | Pickling paste for stainless steel |
| CN101586243A (en) * | 2009-06-16 | 2009-11-25 | 武汉钢铁(集团)公司 | A kind of hot rolled plate hydrochloric acid pickling corrosion inhibition accelerator |
| CN104513998A (en) * | 2013-09-26 | 2015-04-15 | 中国石油化工股份有限公司 | Corrosion inhibitor composition, applications thereof, and method using same to perform acid-washing on equipment |
Non-Patent Citations (4)
| Title |
|---|
| 何小维: "《高吸水性碳水化合物材料》", 31 August 2006, 化学工业出版社 * |
| 刘程等: "《表面活性剂应用大全 修订版》", 28 February 1997, 北京工业大学出版社 * |
| 喻亚非: "《锅炉化学清洗》", 31 October 2013, 中国电力出版社 * |
| 李家柱等: "《电镀工 初级》", 31 July 2007, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894025A (en) * | 2017-04-14 | 2017-06-27 | 中国科学院海洋研究所 | The pickle of zero-g aircraft detection metallic material corrosion thing and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104831263B (en) | For the naked steel rusty scale transforming agent of inland environment | |
| CN107604371A (en) | A kind of neutral rust remover and preparation method thereof | |
| CN108396315B (en) | Treating agent for quickly generating stabilized rust layer on surface of weathering resistant steel and use method thereof | |
| CN105176321A (en) | Water-based phenolic aldehyde epoxy graphene anticorrosion primer and preparation method thereof | |
| CN104388943A (en) | Water-based metal rust inhibitor and preparation method thereof | |
| CN104818476A (en) | Chromium-free treating fluid for stabilizing rust layer of naked steel | |
| CN103924231B (en) | Naked steel rusty scale surface of stability treatment agent | |
| CN106967971A (en) | A kind of feature of environmental protection nickel plating antirust sealer and its compound method | |
| CN105779986A (en) | Acid rain corrosion resisting agent coated to surface of bare steel and preparation method of acid rain corrosion resisting agent | |
| CN105018949A (en) | Rust remover suitable for steel precision part and rust removing process of rust remover | |
| CN104264173A (en) | Environment-friendly neutral oil-removing rust-removing passivator and preparation method thereof | |
| CN102491668A (en) | Environment-friendly high temperature activated water-based rebar rust inhibitor | |
| CN104928665B (en) | Containing the chromium treatment fluid stable for naked steel rusty scale | |
| JP5481705B2 (en) | Non-chromic acid anticorrosive for steel materials and method for anticorrosion treatment of steel materials using the anticorrosive agent | |
| CN105256296A (en) | Normal/low-temperature chemical conversion solution for 35CrMnSi steel and preparing method thereof | |
| CN104805457A (en) | Pickling solution for stability of rust layer of bare steel | |
| CN112708875A (en) | Zinc-calcium series phosphating solution | |
| CN109072454A (en) | For the composition in the pickling removal comprising reducing material in zinc-plated and/or ungalvanized steel metal surface pickling | |
| CN112375613B (en) | Preparation method of environment-friendly water-based temporary antirust agent used after pickling of ESP strip steel | |
| CN107937918A (en) | Antirust agent and preparation method thereof rolls acid with it antirust application of chill coil of strip of middle database | |
| CN102330092B (en) | Green corrosion inhibitor used for titanium in acid medium | |
| CN110387549B (en) | Additive and method for inhibiting residual iron powder on surface of steel coil subjected to acid pickling | |
| CN112011791A (en) | Formation agent based on phosphoric acid without surface conditioning process and sodium sulfite promoter and preparation method thereof | |
| CN102977977A (en) | Dimethyl fumarate gas-phase slow-release rust preventive oil and preparation method thereof | |
| CN102851662A (en) | Metal anti-rust treatment liquid and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170804 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Applicant after: Wuhan iron and Steel Company Limited Address before: 430080 Hubei, Wuhan, Wuchang Friendship Road, No. 999, block A, floor 15 Applicant before: Wuhan Iron & Steel (Group) Corp. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |