CN102400204B - Device for electrochemically polishing and passivating surface of stainless steel product on spot - Google Patents
Device for electrochemically polishing and passivating surface of stainless steel product on spot Download PDFInfo
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- CN102400204B CN102400204B CN201110397117.4A CN201110397117A CN102400204B CN 102400204 B CN102400204 B CN 102400204B CN 201110397117 A CN201110397117 A CN 201110397117A CN 102400204 B CN102400204 B CN 102400204B
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Abstract
The invention discloses a device for electrochemically polishing and passivating the surface of a stainless steel product on a spot, which comprises a power supply, the stainless steel product to be treated connected to an anode of the power supply, and an electrode brush assembly for brushing treating liquid on the surface of the stainless steel product. The electrode brush assembly comprises an auxiliary electrode; the auxiliary electrode is electrically connected with a cathode of the power supply; the electrode brush assembly is provided with a liquid injecting opening; and the liquid injecting opening is connected to a liquid pump connected with a treating liquid box. By adopting a liquid absorber capable of moving or sliding along the surface of the stainless steel product, the treating liquid is uniformly brushed on the surface of the stainless steel product; furthermore, the liquid brushing surface of the liquid absorber is designed to adapt to the surface of the stainless steel product to be treated; the favorable brushing effect is achieved; the work efficiency is high; further, the phenomenon that the treating liquid is accumulated cannot occur; the treatment effect is improved obviously compared with that of a conventional method; and the device for electrochemically polishing and passivating the surface of the stainless steel product on the spot is suitable to be applied in on-spot treatment.
Description
Technical field
the present invention relates to the corrosion proof polishing passivation of a kind of raising device, particularly, relate to a kind of to stainless steel product surface field electrochemical polishing passivation device.
Background technology
(about 1nm) as thin as a wafer and fine and close passive film that the main abutment surface of the solidity to corrosion of stainless steel product forms are isolated corrosive medium, this passive film is the basic barrier of stainless steel product corrosion prevention, yet causing the reason of damage, this passive film has a lot, the loose scale formed in tensile stress, thermal treatment or welding process that surface impurity (such as the iron of being brought into by instrument and residual abrasive substance etc.), mechanical treatment cause etc. all can cause original passive film breakage, reduces stainless steel corrosion resistance (the even stress corrosion of spot corrosion, crevice corrosion).Therefore carrying out generally need to carrying out Passivation Treatment to stainless steel product after mechanical workout and welding.
more often adopt at present the acid wash passivation method, yet there is following shortcoming in acid wash passivation: 1. acid wash passivation liquid (cream) generally all contains hydrofluoric acid or hydrochloric acid, may in construction process, rush and does not wash clean and cause surperficial F
---
, Cl
-
too high etc. aggressiveness ion residues amount, cause local corrosion; 2. the cut that acid wash passivation is processed producing in processing or bruting process can not be removed, and causes acid wash passivation liquid (cream) to be difficult to rinse well, may make aggressiveness ion in environment (as Cl in coastal air simultaneously
-
) gather; 3. contain F in refuse
---
, large to environmental hazard, intractability is large.
Summary of the invention
the purpose of this invention is to provide a kind of with low cost, difficulty of construction is low, the stainless steel product electrochemical etching passivation device of good passivation effect, can reach the effect of eliminating polishing scratch, and reduces the residual of product surface pollutent.
for solving the problems of the technologies described above, the present invention adopts following technical scheme:
a kind of to stainless steel product surface field electrochemical polishing passivation device, it utilizes treatment solution to carry out the polishing Passivation Treatment to the stainless steel product surface, comprise power supply, be connected to the pending stainless steel product of described positive source, for the electrode brush assemblies to the described treatment solution of stainless steel product external coating, this described electrode brush assemblies comprises supporting electrode, described supporting electrode is electrically connected to described power cathode, have a spout on described electrode brush assemblies, this described spout is connected to the liquid pump be connected with the treatment solution case.
preferably, described electrode brush assemblies comprise suitable with pending stainless steel product surface shape and when contacting with pending stainless steel product by the treatment solution brushing imbibition body thereon, be located at the electrode brush housing of the top of described imbibition body, be provided with described supporting electrode between described electrode brush housing and described imbibition body, form liquid storage cylinder between described electrode brush housing and described supporting electrode, offer described spout on described electrode brush housing, there are a plurality of through holes on described supporting electrode, described treatment solution immerses described imbibition body by these described through holes after described spout enters described liquid storage cylinder, be provided with a handle conducted mutually with described supporting electrode on described electrode brush housing, this described handle is electrically connected to the negative pole of described power supply by wire.
preferably, described supporting electrode is tabular, and described imbibition body is the layer of fibers that is attached to the lower surface of described supporting electrode.
preferably, described supporting electrode is halfpipe or minor arc tubulose, and described imbibition body is the layer of fibers that is attached to the internal surface of described supporting electrode.
preferably, described supporting electrode comprises the flat sub-supporting electrode that polylith is arranged in order, described electrode brush housing is the sub-housing that is located at the described sub-supporting electrode of each piece top, form described liquid storage cylinder between corresponding described sub-housing and described sub-supporting electrode, all offer spout on each described sub-housing, each described spout all is connected to described liquid pump by catheter, described imbibition body is for being attached to respectively the layer of fibers of the lower surface of the described sub-supporting electrode of each piece, between two adjacent described sub-housings, by hinge, be connected so that can be angle between the two and open.
preferably, described layer of fibers is polypropylene fibre layer or glass layer.
preferably, described fibrolaminar thickness range is 1-20mm.
preferably, described supporting electrode is that lead alloy, nickelalloy or stainless material are made.
preferably, described power supply is selected DC constant flowing power.
beneficial effect of the present invention is: the imbibition body that employing can be moved along the stainless steel product surface or slide is the surface at stainless steel product by the treatment solution brushing equably, and, it is suitable with the surface of tape handling stainless steel product that the brush liquid surface design of imbibition body becomes, reached good painting brushing effects, high efficiency, and the phenomenon that not there will be treatment solution to gather, treatment effect is excellent, is suitable for being applied in site disposal.
The accompanying drawing explanation
accompanying drawing 1 is the structural representation of the field electrochemical polishing passivation of stainless steel product surface being used to device of the present invention;
the structural representation that accompanying drawing 2 is the electrode brush assemblies in embodiment mono-(part is analysed and observe);
the structural representation that accompanying drawing 3 is the electrode brush assemblies in embodiment bis-(part is analysed and observe);
the structural representation that accompanying drawing 4 is the electrode brush assemblies in embodiment tri-(part is analysed and observe);
accompanying drawing 5 is the shape appearance figure that does not carry out the stainless steel weld joint surface of polishing Passivation Treatment;
accompanying drawing 6 is the shape appearance figure of stainless steel weld joint surface after the 1000h salt-fog test in accompanying drawing 5;
accompanying drawing 7 is the shape appearance figure of stainless steel weld joint surface after device of the present invention carries out the polishing Passivation Treatment in accompanying drawing 5;
accompanying drawing 8 is that stainless steel weld joint surface after the processing in accompanying drawing 7 is by the shape appearance figure after the 1000h salt-fog test.
in accompanying drawing: 1, power supply; 2, pending stainless steel product; 3, electrode brush assemblies; 4, supporting electrode; 5, spout; 6, liquid pump; 7, imbibition body; 8, electrode brush housing; 9, liquid storage cylinder; 10, through hole; 11, handle; 12, treatment solution case; 13, hinge; 14, catheter.
Embodiment
below in conjunction with embodiment shown in the drawings, the present invention is described in detail below:
as shown in Figure 1, of the present invention the field electrochemical polishing passivation of stainless steel product surface is comprised to power supply 1 with device, be connected to the pending stainless steel product 2 of power supply 1 positive pole, for the electrode brush assemblies 3 to stainless steel product external coating treatment solution, this electrode brush assemblies 3 comprises supporting electrode 4, supporting electrode 4 is electrically connected to power supply 1 negative pole, there is a spout 5 on electrode brush assemblies 3, this spout 5 is connected to the liquid pump 6 be connected with treatment solution case 12, electrode brush assemblies 3 comprise suitable with pending stainless steel product 2 surface shapes and when contacting with pending stainless steel product 2 by the treatment solution brushing imbibition body 7 thereon, be located at the electrode brush housing 8 of the top of imbibition body 7, be provided with supporting electrode 4 between electrode brush housing 8 and imbibition body 7, form liquid storage cylinder 9 between electrode brush housing 8 and supporting electrode 4, offer spout 5 on electrode brush housing 8, there are a plurality of through holes 10 on supporting electrode 4, treatment solution immerses imbibition body 7 by these through holes 10 after spout 5 enters liquid storage cylinder 9, be provided with a handle 11 conducted mutually with supporting electrode 4 on electrode brush housing 8, this handle 11 is electrically connected to the negative pole of power supply 1 by wire.
as shown in Figure 2, supporting electrode 4 is tabular to the embodiment mono-of above-mentioned electrode brush assemblies 3, and imbibition body 7 is the layer of fibers that is attached to the lower surface of supporting electrode 4.
as shown in Figure 3, supporting electrode 4 is halfpipe or minor arc tubulose to the embodiment bis-of above-mentioned electrode brush assemblies 3, and imbibition body 7 is the layer of fibers that is attached to the internal surface of supporting electrode 4.
the embodiment tri-of above-mentioned electrode brush assemblies 3 as shown in Figure 4, supporting electrode 4 comprises the flat sub-supporting electrode 4 that polylith is arranged in order, electrode brush housing 8 is for being located at the sub-housing of each piece supporting electrode 4 tops, form liquid storage cylinder 9 between corresponding sub-housing and sub-supporting electrode 4, all offer spout 5 on every sub-housing, each spout 5 all is connected to liquid pump 6 by catheter 14, imbibition body 7 is for being attached to respectively the layer of fibers of the lower surface of each piece supporting electrode 4, between two adjacent sub-housings, by hinge 13, be connected so that can be angle between the two and open.
layer of fibers wherein can be selected polypropylene fibre layer or glass layer, and fibrolaminar thickness range is 1-20mm, and supporting electrode 4 is made for lead alloy, nickelalloy or stainless material, and power supply 1 is selected DC constant flowing power 1.
a kind of practical situations: by argon arc welding welding (welding wire ER304) for two thick 304 stainless steel plates of 2mm, welded seam area is smooth with grinder buffing, will with DC constant flowing power 1 is anodal, be connected with the workpiece of weld seam subsequently.By acidproof plunger liquid pump 6 and teflon hose, the polishing passivating solution is transported in electrode brush assemblies 3, keeps flow velocity 1mL/s.Electrode brush assemblies 3 is contacted gently with treating the passivation workpiece, open DC constant flowing power 1, controlling electric current is that the relative current density of 12A(is 300mA/cm
2
), slowly move back and forth electrode brush Passivation Treatment and get final product in 5 minutes.Carefully rinse stainless steel surface with de-mineralized water subsequently, until pH reaches 6 ~ 8, hair dryer dries up.Wherein, auxiliary cathode is the 5mm lead alloy plate, every square centimeter of 1 diameter in surface be 1.5mm through hole 10 as the flow of solution passage, imbibition body 7 adopts the thick polypropylene fibre of 5mm.
the effect of device of the present invention compares: accompanying drawing 5 is depicted as the shape appearance figure on the stainless steel weld joint surface of not carrying out the polishing Passivation Treatment, accompanying drawing 6 is depicted as the shape appearance figure of stainless steel weld joint surface after the 1000h salt-fog test in accompanying drawing 5, accompanying drawing 7 is depicted as the shape appearance figure of stainless steel weld joint surface after device of the present invention carries out the polishing Passivation Treatment in accompanying drawing 5, accompanying drawing 8 is depicted as stainless steel weld joint surface after the processing in accompanying drawing 7 by the shape appearance figure after the 1000h salt-fog test, can obviously find out, after Passivation Treatment, the welded seam area solidity to corrosion is greatly improved, and salt spray resistance far above ASTM A967 to stainless steel component passivation effect required standard value (2h).
the imbibition body 7 that device employing of the present invention can be moved along the stainless steel product surface or slide is the surface at stainless steel product by the treatment solution brushing equably, and, it is suitable with the surface of tape handling stainless steel product that the brush liquid surface design of imbibition body 7 becomes, reached good painting brushing effects, high efficiency, and the phenomenon that not there will be treatment solution to gather, treatment effect is excellent, is suitable for being applied in site disposal.
above-described embodiment is only explanation technical conceive of the present invention and characteristics, and its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (8)
1.
a kind of to stainless steel product surface field electrochemical polishing passivation device, it utilizes treatment solution to carry out the polishing Passivation Treatment to the stainless steel product surface, it is characterized in that: comprise power supply, be connected to the pending stainless steel product of described positive source, for the electrode brush assemblies to the described treatment solution of stainless steel product external coating, this described electrode brush assemblies comprises supporting electrode, described supporting electrode is electrically connected to described power cathode, there is a spout on described electrode brush assemblies, this described spout is connected to the liquid pump be connected with the treatment solution case, described electrode brush assemblies comprise suitable with pending stainless steel product surface shape and when contacting with pending stainless steel product by the treatment solution brushing imbibition body thereon, be located at the electrode brush housing of the top of described imbibition body, be provided with described supporting electrode between described electrode brush housing and described imbibition body, form liquid storage cylinder between described electrode brush housing and described supporting electrode, offer described spout on described electrode brush housing, there are a plurality of through holes on described supporting electrode, described treatment solution immerses described imbibition body by these described through holes after described spout enters described liquid storage cylinder, be provided with a handle be conducted with described supporting electrode on described electrode brush housing, this described handle is electrically connected to the negative pole of described power supply by wire.
2.
according to claim 1 to stainless steel product surface field electrochemical polishing passivation device, it is characterized in that: described supporting electrode is tabular, and described imbibition body is the layer of fibers that is attached to the lower surface of described supporting electrode.
3.
according to claim 1 to stainless steel product surface field electrochemical polishing passivation device, it is characterized in that: described supporting electrode is halfpipe or minor arc tubulose, and described imbibition body is the layer of fibers that is attached to the internal surface of described supporting electrode.
4.
according to claim 1 to stainless steel product surface field electrochemical polishing passivation device, it is characterized in that: described supporting electrode comprises the flat sub-supporting electrode that polylith is arranged in order, described electrode brush housing is the sub-housing that is located at the described sub-supporting electrode of each piece top, form described liquid storage cylinder between corresponding described sub-housing and described sub-supporting electrode, all offer spout on each described sub-housing, each described spout is connected to described liquid pump by catheter, described imbibition body is for being attached to respectively the layer of fibers of the lower surface of the described sub-supporting electrode of each piece, between two adjacent described sub-housings, by hinge, be connected so that can be angle between the two and open.
5.
described to stainless steel product surface field electrochemical polishing passivation device according to any one in claim 2 to 4, it is characterized in that: described layer of fibers is polypropylene fibre layer or glass layer.
6.
described to stainless steel product surface field electrochemical polishing passivation device according to any one in claim 2 to 4, it is characterized in that: described fibrolaminar thickness range is 1-20mm.
7.
according to claim 1 to stainless steel product surface field electrochemical polishing passivation device, it is characterized in that: described supporting electrode is that lead alloy, nickelalloy or stainless material are made.
8.
according to claim 1 to stainless steel product surface field electrochemical polishing passivation device, it is characterized in that: described power supply is selected DC constant flowing power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110397117.4A CN102400204B (en) | 2011-12-05 | 2011-12-05 | Device for electrochemically polishing and passivating surface of stainless steel product on spot |
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| CN201110397117.4A CN102400204B (en) | 2011-12-05 | 2011-12-05 | Device for electrochemically polishing and passivating surface of stainless steel product on spot |
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| CN102400204A CN102400204A (en) | 2012-04-04 |
| CN102400204B true CN102400204B (en) | 2014-01-01 |
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| CN109913936B (en) * | 2019-04-30 | 2020-10-16 | 中广核核电运营有限公司 | Decontamination system and decontamination method |
| CN114561685B (en) * | 2022-02-16 | 2024-05-03 | 中国建筑第二工程局有限公司 | Stainless steel welding seam and surface treatment method and device, terminal equipment and storage medium |
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| JP3421838B2 (en) * | 1998-11-13 | 2003-06-30 | シゲル工業株式会社 | Stainless steel molded product for sink and manufacturing method thereof |
| CN102230210B (en) * | 2011-06-08 | 2013-12-11 | 中南大学 | Non-chromium electrolytic polishing solution for stainless steel and surface polishing process for stainless steel |
| CN102260775A (en) * | 2011-06-10 | 2011-11-30 | 苏州华亚电讯设备有限公司 | Treatment method of stainless steel surface |
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Address after: 215004 West Ring Road, Jiangsu, Suzhou, No. 1788 Applicant after: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant after: China General Nuclear Power Corporation Address before: 215004 West Ring Road, Jiangsu, Suzhou, No. 1788 Applicant before: Suzhou Nuclear Power Research Institute Co., Ltd. Applicant before: China Guangdong Nuclear Power Group Co., Ltd. |
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