CN103343381A - High-frequency impulse and low-temperature quick derusting device and high-frequency impulse and low-temperature quick derusting method - Google Patents
High-frequency impulse and low-temperature quick derusting device and high-frequency impulse and low-temperature quick derusting method Download PDFInfo
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- CN103343381A CN103343381A CN2013102841581A CN201310284158A CN103343381A CN 103343381 A CN103343381 A CN 103343381A CN 2013102841581 A CN2013102841581 A CN 2013102841581A CN 201310284158 A CN201310284158 A CN 201310284158A CN 103343381 A CN103343381 A CN 103343381A
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- rust cleaning
- derusting
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- quick derusting
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Abstract
The invention discloses a high-frequency impulse and low-temperature quick derusting device comprising a derusting tank body for accommodating a derusting liquid and a workpiece. The device is further provided with an electrode plate communicated with the workpiece. The electrode plate is electrically connected with a power source. A quick derusting method using the device comprises the following steps of: 1, putting the derusting liquid into the derusting tank body, wherein the derusting liquid is prepared from 3-13wt% of 36wt% HCl, 2-7% of 98wt% H2SO4, 3-6wt% of Na3PO4 and the balance of water; 2, after the workpiece is connected with the electrode plate, immerging the workpiece into the derusting liquid in the derusting tank body; 3, turning on the power source, wherein the output current is 30-400A, the frequency is 0-30kHz and the derusting time is 3-5 minutes. The quick derusting of the workpiece is realized by the steps. The device disclosed by the invention has advantages of simple structure, low processing cost, short derusting time and high working efficiency. The device disclosed by the invention can be used for greatly reducing the preparation concentration of acid and eliminating the influence of hydrogen embrittlement on the surface of a steel piece.
Description
Technical field
The present invention relates to the rust cleaning field, a kind of high-frequency impulse low-temperature quick derusting device and method particularly, this method is particularly useful for alumetizing process workpiece surface processing of rust removing.
Background technology
In engineering construction, petrochemical complex, shipbuilding, electric power smelting etc. and the closely-related industry of metal, remove the metallic surface corrosion layer effectively is the difficult problem that people pay close attention to always, and particularly carrying out the surface derusting processing before steel plating, application is necessary technology.At present, the steel surface derusting method mainly contains mechanical rust removal, chemical rust removing.Mechanical rust removal (shot-peening method, high-pressure water jet method etc.) is easy to generate dust and noise, rust cleaning efficient is low, there are damage, surface excessive depression may occur to steel surface, and are not suitable for some special surfaces such as steel pipe inwall, complex structure workpiece and thin-walled steel; Front surface plating, cementation process pre-treatment derusting process adopt chemical rust removing mostly, learning rust cleaning mainly utilizes chemical substances such as high concentrated acid, alkali to remove the steel surface corrosion, because deruster contains high concentrated acid or alkaline solution, have severe corrosive and the gaseous volatilization environmental pollution is big, workshop appliance also causes corrosion; The workpiece pickling time is long, and efficient is low, and the pickling workpiece easily produces hydrogen embrittlement and causes the infiltration layer of final aluminising part to have crackle.The disclosed sulfuric acid concentration of patent CN1392283A is 20% ~ 25%, and 15 ~ 20 minutes pickling time, the disclosed rust cleaning liquid of patent CN103132089A concentration is 15% ~ 40% sulfuric acid, 2% ~ 20% hydrochloric acid.Wherein the sulfuric acid concentration of Cai Yonging is all higher, and the harmless treatment difficulty is bigger, and the pickling time is longer, and efficient is lower.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high-frequency impulse low-temperature quick derusting device and method, the corrosion that can remove workpiece surface fast.Further, can adopt the lower rust cleaning liquid of concentration, reduce the influence to environment.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of high-frequency impulse low-temperature quick derusting device comprises that be used to the rust cleaning cell body that holds rust cleaning liquid and workpiece also be provided with the battery lead plate that is communicated with workpiece, battery lead plate is electrically connected with power supply.
Described battery lead plate is positioned at rust cleaning cell body top, and does not contact with rust cleaning liquid.
Coupling device by conduction between described workpiece and the battery lead plate is connected;
Described coupling device comprises hook, conductive clip and lead.
Also be provided with dividing plate in the described rust cleaning cell body, dividing plate is provided with a plurality of through holes.
Described electric power outputting current scope is 30 ~ 400A, frequency 0 ~ 30kHz.
Described power supply is for exchanging or direct current output, and output current scope is 30 ~ 80A, frequency 0 ~ 15kHz.
A kind of method that adopts above-mentioned device quick derusting may further comprise the steps:
One, configuration rust cleaning liquid is inserted in the rust cleaning cell body, and the proportioning of rust cleaning liquid is the wt36HCl of massfraction 3 ~ 13%, 2 ~ 7% wt98H
2SO
4, 3 ~ 6% Na
3PO
4, surplus is water;
Two, workpiece places and immerses rust cleaning liquid in the rust cleaning cell body with after battery lead plate is communicated with;
Three, power-on, outward current 30 ~ 400A, frequency 0 ~ 30kHz, rust cleaning time 3 ~ 5min;
Realize the quick derusting of workpiece by above-mentioned steps.
The output current scope of power supply is 30 ~ 80A, frequency 0 ~ 15kHz.
Power supply adopts alternately output of alternating current-direct current, and wherein the alternating-current pulse time is 1 ~ 2min, direct current time 0.5 ~ 1min.
The proportioning of rust cleaning liquid is the wt36HCl of massfraction 8 ~ 10%, 4 ~ 6% wt98H
2SO
4, 4 ~ 5% Na
3PO
4, surplus is water.
The present invention has following advantage and effect with respect to prior art:
1, apparatus of the present invention simple in structure, processing cost is low, the rust cleaning time is short, high efficiency;
2, adopt the present invention can reduce the compound concentration of acid greatly, reduce acid consumption, eliminate the influence of steel piece surface hydrogen embrittlement, reduce the harmless treatment difficulty in later stage, alleviate the influence to environment.
3, adopt the present invention not only can remove workpiece surface rusty scale and other impurity, but and the crystal grain of refinement workpiece surface make surface structure closely, level and smooth, promote workpiece next step surperficial coating film adhesive or strengthen seepage force.
The present invention provides a kind of novel low-cost, high reliability, high efficiency treatment unit and method for the steel surface processing of rust removing, can promote the industrialization of steel surface aseptic technic, increase product technology content, make it to have characteristics efficient, energy-saving and environmental protection, have tangible economic benefit and social benefit.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is high frequency pulse power supply output current wave mode chart of the present invention.
Among the figure: battery lead plate 1, hook 2, workpiece 3, rust cleaning liquid 4, rust cleaning cell body 5, power supply 6, dividing plate 7.
Embodiment
In Fig. 1, a kind of high-frequency impulse low-temperature quick derusting device comprises that be used to the rust cleaning cell body 5 that holds rust cleaning liquid 4 and workpiece also be provided with the battery lead plate 1 that is communicated with workpiece 3, battery lead plate 1 is electrically connected with power supply 6.Structure is switched in to the workpiece rust cleaning thus, the time that can significantly reduce rust cleaning, and reduce sour proportioning in the rust cleaning liquid 4.But the crystal grain of refinement workpiece surface make surface structure closely, level and smooth, promote workpiece next step surperficial coating film adhesive or strengthen seepage force.
Preferably, described battery lead plate 1 is positioned at rust cleaning cell body 5 tops, and does not contact with rust cleaning liquid 4.Structure has reduced the requirement for battery lead plate 1 material thus, and certainly, it also is feasible being immersed in battery lead plate in the rust cleaning liquid 4.
Further preferred, be connected by the coupling device that conducts electricity between described workpiece 3 and the battery lead plate 1; Described coupling device comprises hook, conductive clip and lead.Adopt the hook of conduction to hang workpiece in this example, the battery lead plate in this example adopts 304 stainless steel plates, 15-40 hook of every square metre of welding of battery lead plate.
Preferably, also be provided with dividing plate 7 in the described rust cleaning cell body 5, dividing plate is provided with a plurality of through holes.Dividing plate 7 in this example adopts PP sheet material to make, and the distribution density in hole is 20 every square metre on dividing plate.
Preferably as shown in Figure 2, described power supply 6 output current scopes are 30 ~ 400A, frequency 0 ~ 30kHz, i.e. and alternately output AC electricity and direct current of power supply, the circuit of this power supply is that prior art is obtainable, repeats no more here.
Further preferred, described power supply 6 is for exchanging or direct current output, and output current scope is 30 ~ 200A, frequency 0 ~ 15kHz.
Further preferred, described power supply 6 is for exchanging or direct current output, and output current scope is 30 ~ 100A, frequency 10 ~ 25kHz.
A kind of method that adopts above-mentioned device quick derusting may further comprise the steps:
One, configuration rust cleaning liquid is inserted in the rust cleaning cell body 5, and the proportioning of rust cleaning liquid is the wt36HCl of massfraction 3 ~ 13%, 2 ~ 7% wt98H
2SO
4, 3 ~ 6% Na
3PO
4, surplus is water;
Preferably, the proportioning of rust cleaning liquid is the wt36HCl of massfraction 8 ~ 10%, 3 ~ 6% wt98H
2SO
4, 4 ~ 5% Na
3PO
4, surplus is water.
Two, two electrode plate 1 are communicated with the two poles of the earth of power supply, and workpiece 3 places and immerses the rust cleaning liquid in the rust cleaning cell body 5 respectively with after two electrode plate 1 are communicated with;
Three, power-on 6, output current scope 30 ~ 400A, frequency 0 ~ 30kHz, rust cleaning time 3 ~ 5min;
Preferably, the output current scope of power supply 6 is 30 ~ 80A, frequency 0 ~ 15kHz.
Further preferred, power supply 6 adopts alternately output of alternating current-direct current, and wherein the alternating-current pulse time is 1 ~ 2min, and frequency is 7-30 kHz, direct current time 0.5 ~ 1min, as shown in Figure 2.
Further preferred, power supply 6 adopts alternately output of alternating current-direct current, and wherein the alternating-current pulse time is 1 ~ 2min, and frequency is 7-15 kHz, direct current time 0.5 ~ 1min, as shown in Figure 2.
Realize the quick derusting of workpiece by above-mentioned steps.Method of the present invention need not heating in acid cleaning process, the volatile disadvantage of hydrochloric acid when having avoided sulfuric acid and mixed in hydrochloric acid heating pickling.
Embodiment 1:
Wt36HCl, 3% the wt98H of preparation massfraction 9% in the rust cleaning cell body 5 in above-mentioned device
2SO
4, 5% Na
3PO
4, surplus is the rust cleaning liquid of water.Every electrode plate 1 hangs with the 50# angle steel that 15 root timber matter are Q235, power-on 6, current value 50A, frequency 8kHz, rust cleaning time 5min.
Embodiment 2:
Wt36HCl, 5% the wt98H of preparation massfraction 13% in the rust cleaning cell body 5 in above-mentioned device
2SO
4, 6% Na
3PO
4, surplus is the rust cleaning liquid of water.Every electrode plate 1 hangs with the 50# angle steel that 15 root timber matter are Q235, power-on 6, current value 50A, frequency 25kHz, rust cleaning time 4.8min.
Embodiment 3:
Wt36HCl, 5% the wt98H of preparation massfraction 13% in the rust cleaning cell body 5 in above-mentioned device
2SO
4, 6% Na
3PO
4, surplus is the rust cleaning liquid of water.Every electrode plate 1 hangs with the 50# angle steel that 15 root timber matter are Q235, power-on 6, range of current 200A, frequency 30kHz, rust cleaning time 3.2min.Increasing electric current and frequency can effectively reduce the rust cleaning time.
Embodiment 4:
Wt36HCl, 2% the wt98H of preparation massfraction 3% in the rust cleaning cell body 5 in above-mentioned device
2SO
4, 3% Na
3PO
4, surplus is the rust cleaning liquid of water.Every electrode plate 1 hangs with the 50# angle steel that 15 root timber matter are Q235, power-on 6, range of current 400A, frequency 30kHz, rust cleaning time 5min.When acid concentration reduces, need higher electric current and frequency.
Embodiment 5:
Wt36HCl, 6% the wt98H of preparation massfraction 10% in the rust cleaning cell body 5 in above-mentioned device
2SO
4, 6% Na
3PO
4, surplus is the rust cleaning liquid of water.Every electrode plate 1 hangs with the 50# angle steel that 15 root timber matter are Q235, power-on 6, and power supply 6 adopts alternately output of alternating current-direct current, current value 80A, wherein the alternating-current pulse time is 1 ~ 2min, frequency is 10kHz, direct current time 0.5 ~ 1min, rust cleaning time 3.5min.Adopt the alternately pattern of output of alternating current-direct current, also can shorten the rust cleaning time, and can suitably reduce current value.
Claims (10)
1. a high-frequency impulse low-temperature quick derusting device comprises that it is characterized in that: also be provided with the battery lead plate (1) that is communicated with workpiece (3), battery lead plate (1) is electrically connected with power supply (6) be used to the rust cleaning cell body (5) that holds rust cleaning liquid (4) and workpiece.
2. a kind of high-frequency impulse low-temperature quick derusting device according to claim 1 is characterized in that: described battery lead plate (1) is positioned at rust cleaning cell body (5) top, and does not contact with rust cleaning liquid (4).
3. a kind of high-frequency impulse low-temperature quick derusting device according to claim 1 and 2 is characterized in that: the coupling device by conduction between described workpiece (3) and the battery lead plate (1) is connected;
Described coupling device comprises hook, conductive clip and lead.
4. a kind of high-frequency impulse low-temperature quick derusting device according to claim 1 and 2, it is characterized in that: also be provided with dividing plate (7) in the described rust cleaning cell body (5), dividing plate is provided with a plurality of through holes.
5. a kind of high-frequency impulse low-temperature quick derusting device according to claim 3, it is characterized in that: described power supply (6) output current scope is 30 ~ 400A, frequency 0 ~ 30kHz.
6. a kind of high-frequency impulse low-temperature quick derusting device according to claim 3 is characterized in that: described power supply (6) is for exchanging or direct current output, and output current scope is 30 ~ 80A, frequency 0 ~ 15kHz.
7. method that adopts each described device quick derusting of claim 1 ~ 6 is characterized in that may further comprise the steps:
One, configuration rust cleaning liquid is inserted in the rust cleaning cell body (5), and the proportioning of rust cleaning liquid is the wt36HCl of massfraction 3 ~ 13%, 2 ~ 7% wt98H
2SO
4, 3 ~ 6% Na
3PO
4, surplus is water;
Two, workpiece (3) places and immerses rust cleaning liquid in the rust cleaning cell body (5) with after battery lead plate (1) is communicated with;
Three, power-on (6), outward current 30 ~ 400A, frequency 0 ~ 30kHz, rust cleaning time 3 ~ 5min;
Realize the quick derusting of workpiece by above-mentioned steps.
8. a kind of quick derusting method according to claim 7, it is characterized in that: the output current scope of power supply (6) is 30 ~ 80A, frequency 0 ~ 15kHz.
9. a kind of quick derusting method according to claim 7 is characterized in that: power supply (6) adopts alternately output of alternating current-direct current, and wherein the alternating-current pulse time is 1 ~ 2min, direct current time 0.5 ~ 1min.
10. a kind of quick derusting method according to claim 7 is characterized in that: the proportioning of rust cleaning liquid is the wt36HCl of massfraction 8 ~ 10%, 4 ~ 6% wt98H
2SO
4, 4 ~ 5% Na
3PO
4, surplus is water.
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|---|---|---|---|
| CN201310284158.1A CN103343381B (en) | 2013-07-08 | 2013-07-08 | A kind of high-frequency impulse low-temperature quick derusting device and method |
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| CN201310284158.1A CN103343381B (en) | 2013-07-08 | 2013-07-08 | A kind of high-frequency impulse low-temperature quick derusting device and method |
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| CN103343381B CN103343381B (en) | 2016-04-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611759A (en) * | 2015-02-12 | 2015-05-13 | 广州市精源电子设备有限公司 | Polarity-variable pulse acid-pickling control method |
| CN110067160A (en) * | 2019-06-12 | 2019-07-30 | 智合高新科技(辽宁)有限公司 | Electromagnetic pulse device and its application method for railway track derusting |
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| CN110067160A (en) * | 2019-06-12 | 2019-07-30 | 智合高新科技(辽宁)有限公司 | Electromagnetic pulse device and its application method for railway track derusting |
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|---|---|
| CN103343381B (en) | 2016-04-20 |
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