CN105887176A - Rebar cleaning method - Google Patents
Rebar cleaning method Download PDFInfo
- Publication number
- CN105887176A CN105887176A CN201610461256.1A CN201610461256A CN105887176A CN 105887176 A CN105887176 A CN 105887176A CN 201610461256 A CN201610461256 A CN 201610461256A CN 105887176 A CN105887176 A CN 105887176A
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- CN
- China
- Prior art keywords
- reinforcing bar
- cleaning method
- workpiece
- anode
- work
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
- C25F1/06—Iron or steel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a rebar cleaning method and belongs to the field of surface cleaning and treatment for metal materials. The method comprises: using a rebar workpiece as a cathode, dipping the cathode and an anode in 5-15% by mass of carbonate or phosphate cleaning liquid, applying direct-current electric field between the two electrodes, and removing oxide scale from the surface of the workpiece. In the environment-friendly cleaning liquid, the oxide scale is removed from the surface of a rebar using electrolytic plasma technique, the process is simple, performing is easy, and the method is low in cost and low in pollution and is an efficient and environment-friendly cleaning method.
Description
Technical field
The present invention relates to the cleaning method of a kind of reinforcing bar, belong to metal material surface and clean and process field.
Background technology
The corrosion of reinforcing bar is the key issue of destroying concrete structure, in recent years, for improving the resistance to of regular reinforcement
Erosion property, develops alloy reinforcing bar by adding the alloying elements such as Cr in reinforcing bar, increases its anti-chlorine ion corrosion
Ability, but alloy reinforcing bar surface in process of production can be formed one layer of adhesion strong, stable containing ferrum
Oxide and the oxide skin of hydroxide, cause the disappearance of rebar matrix surface C r element, reduces its corrosion and faces
Boundary's Cl concentration, the due passivation effect of anti-corrosion reinforcing bar disappears so that it is corrosion resistance significantly declines.Therefore it is final
The alloy reinforcing bar used in Practical Project need to remove, by pickling, the oxide skin that surface is formed.
Patent of invention (CN 102719833 A) such as entitled " containing the acid washing method of Cr hot rolling acid-cleaning plate "
Described in, need to be 60～80 DEG C by temperature, concentration be 80～110g/L hydrochloric acid solution carry out pickling, and pickling
Liquid needs add organic inhibitor.Hydrochloric acid solution used in the method and organic solvent are to environment and per capita
A certain degree of injury can be caused.
Summary of the invention
Technical problem: it is desirable to provide the cleaning method of a kind of reinforcing bar, be for metal materials such as reinforcing bars
Environment protection cleaning method, it is therefore an objective to improve in classical acid washing method acid solution to the pollution of environment and to operative employee
The infringement problem that people is healthy.
Technical scheme: the cleaning method of a kind of reinforcing bar of the present invention, by corrosion resistant plate, (or other is anti-corrosion respectively
Conductor) be connected with the positive and negative electrode of power supply with workpiece after immerse in cleanout fluid and connect DC source, raise electricity
Pressure, after the plasma that surface of the work produces continuous-stable, remains powered on the 30-500 second at this magnitude of voltage
After, the most removable surface of the work oxide skin.Specific as follows:
Using reinforcing bar workpiece as negative electrode, it is contemporaneously immersed in, with anode, the carbonate or phosphoric acid that mass fraction is 5%-15%
In salt cleanout fluid, and apply DC electric field between electrodes, remove surface of the work oxide skin.
Described anode, its surface area need to be more than workpiece area, or using conductor electrolysis bath as anode.
Described applying DC electric field, its DC source running voltage used need to make surface of the work in the electrolytic solution
Producing plasma, and can maintain plasma discharge state, normally used DC source running voltage is higher than
50 volts.
After described surface of the work produces plasma in the electrolytic solution, keep 30-500 second, the most removable workpiece
Surface scale.
Beneficial effect: the present invention relates to the cleaning method of a kind of reinforcing bar, belong to metal material surface clean and
Process field.This invention, in eco-friendly cleanout fluid, utilizes electrolytic plasma technology to remove bar list
The oxide skin in face, technique is simple and convenient to operate and low cost, pollution are few, be a kind of efficiently, environmental protection
Cleaning method.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of reinforcing bar cleaning method in the present invention.
Detailed description of the invention
Embodiment one
In the sodium carbonate liquor that mass fraction is 15%, cleaning treatment 120 seconds, removes the oxide skin of anti-corrosion reinforcing bar.
1. preparation mass fraction is the sodium carbonate liquor of 15%, pours service sink into, and liquor capacity exceedes service sink
2/3rds；
2., using corrosion resistant plate as anode, reinforcing bar workpiece as negative electrode, it is respectively connecting to DC source both positive and negative polarity
(as shown in Figure 1)；
3. anode is immersed in cleanout fluid, after cathode-workpiece is immersed in electrolyte by workpiece control system, connect
Energising source, liter high voltage to 110V, after surface of the work produces the plasma of steady and continuous, at this magnitude of voltage
Deenergization after locating to keep 120 seconds；
4. put the workpiece in washes of absolute alcohol by workpiece control system, dry.
Embodiment two
In the sodium carbonate liquor that mass fraction is 10%, cleaning treatment 300 seconds, removes the oxide skin of anti-corrosion reinforcing bar.
1. preparation mass fraction is the sodium carbonate liquor of 10%, pours service sink into, and liquor capacity exceedes service sink
2/3rds；
2., using corrosion resistant plate as anode, reinforcing bar workpiece as negative electrode, it is respectively connecting to DC source both positive and negative polarity
(as shown in Figure 1)；
3. anode is immersed in cleanout fluid, after cathode-workpiece is immersed in electrolyte by workpiece control system, connect
Energising source, liter high voltage to 110V, after surface of the work produces the plasma of steady and continuous, at this magnitude of voltage
Deenergization after locating to keep 300 seconds；
4. put the workpiece in washes of absolute alcohol by workpiece control system, dry.
Embodiment three
In the sodium radio-phosphate,P-32 solution that mass fraction is 10%, cleaning treatment 120 seconds, removes the oxide skin of anti-corrosion reinforcing bar.
1. preparation mass fraction is the sodium radio-phosphate,P-32 solution of 10%, pours service sink into, and liquor capacity exceedes service sink
2/3rds；
2., using corrosion resistant plate as anode, reinforcing bar workpiece as negative electrode, it is respectively connecting to DC source both positive and negative polarity
(as shown in Figure 1)；
3. anode is immersed in cleanout fluid, after cathode-workpiece is immersed in electrolyte by workpiece control system, connect
Energising source, liter high voltage to 130V, after surface of the work produces the plasma of steady and continuous, at this magnitude of voltage
Deenergization after locating to keep 120 seconds；
4. put the workpiece in washes of absolute alcohol by workpiece control system, dry.
Claims (4)
1. the cleaning method of a reinforcing bar, it is characterised in that using reinforcing bar workpiece as negative electrode, simultaneously soak with anode
Enter in the carbonate or phosphate wash liquid that mass fraction is 5%-15%, and apply unidirectional current between electrodes
, remove surface of the work oxide skin.
The cleaning method of reinforcing bar the most according to claim 1, it is characterised in that described anode, its table
Area need to be more than workpiece area, or using conductor electrolysis bath as anode.
The cleaning method of reinforcing bar the most according to claim 1, it is characterised in that described applying DC electric field,
Its DC source running voltage used need to make surface of the work produce plasma in the electrolytic solution, and can maintenance etc.
Ionic discharge state, normally used DC source running voltage is higher than 50 volts.
The cleaning method of reinforcing bar the most according to claim 3, it is characterised in that described surface of the work is at electricity
Solve after liquid produces plasma, keep 30-500 second, the most removable surface of the work oxide skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461256.1A CN105887176A (en) | 2016-06-22 | 2016-06-22 | Rebar cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461256.1A CN105887176A (en) | 2016-06-22 | 2016-06-22 | Rebar cleaning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105887176A true CN105887176A (en) | 2016-08-24 |
Family
ID=56718790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610461256.1A Pending CN105887176A (en) | 2016-06-22 | 2016-06-22 | Rebar cleaning method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105887176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350854A (en) * | 2016-09-14 | 2017-01-25 | 东南大学 | Passivating method of chrome -containing reinforcing steel bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB101667A (en) * | 1915-10-07 | 1916-10-09 | Pascal Marino | An Electrolytic Method for Removing Oxide or Rust from the Surface of Iron or Steel. |
| US3900376A (en) * | 1972-11-08 | 1975-08-19 | Electricity Council | Cleaning of metal surfaces |
| JPH03236500A (en) * | 1990-02-14 | 1991-10-22 | Nobuo Miyazawa | Electrolyte for electrolytically treating steel |
| CN101824645A (en) * | 2010-05-14 | 2010-09-08 | 河海大学常州校区 | Method for eliminating oxide skins on stainless steel surface by micro-arc |
| CN104419972A (en) * | 2013-09-11 | 2015-03-18 | 广泰金属工业股份有限公司 | Electrolytic rust removal method for steel and rust removal product thereof |
-
2016
- 2016-06-22 CN CN201610461256.1A patent/CN105887176A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB101667A (en) * | 1915-10-07 | 1916-10-09 | Pascal Marino | An Electrolytic Method for Removing Oxide or Rust from the Surface of Iron or Steel. |
| US3900376A (en) * | 1972-11-08 | 1975-08-19 | Electricity Council | Cleaning of metal surfaces |
| JPH03236500A (en) * | 1990-02-14 | 1991-10-22 | Nobuo Miyazawa | Electrolyte for electrolytically treating steel |
| CN101824645A (en) * | 2010-05-14 | 2010-09-08 | 河海大学常州校区 | Method for eliminating oxide skins on stainless steel surface by micro-arc |
| CN104419972A (en) * | 2013-09-11 | 2015-03-18 | 广泰金属工业股份有限公司 | Electrolytic rust removal method for steel and rust removal product thereof |
Non-Patent Citations (1)
| Title |
|---|
| 海本增: ""电解清洗装置的改进和优化"", 《河南冶金》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350854A (en) * | 2016-09-14 | 2017-01-25 | 东南大学 | Passivating method of chrome -containing reinforcing steel bar |
| CN106350854B (en) * | 2016-09-14 | 2019-01-29 | 东南大学 | A kind of passivating method of chrome-bearing steel muscle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |
|
| WD01 | Invention patent application deemed withdrawn after publication |