CN107955925A - Galvanized steel blank pretreatment unit and method - Google Patents
Galvanized steel blank pretreatment unit and method Download PDFInfo
- Publication number
- CN107955925A CN107955925A CN201610919112.6A CN201610919112A CN107955925A CN 107955925 A CN107955925 A CN 107955925A CN 201610919112 A CN201610919112 A CN 201610919112A CN 107955925 A CN107955925 A CN 107955925A
- Authority
- CN
- China
- Prior art keywords
- roller group
- pressure roller
- spraying box
- strip
- cradle
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Spray Control Apparatus (AREA)
Abstract
A kind of galvanized steel blank pretreatment unit, including pressure roller group, cradle, friction roller group, spraying box, polishing machine and rack；Band coil of strip is rack-mounted in rotary shafts, and the first pressure roller group is installed in rotary shafts, is set up in parallel with band coil of strip；Cradle is two rows of frame bodies, and the second pressure roller is assembled in cradle front end, and friction roller is assembled in the rear portion of cradle, and the 3rd pressure roller group is installed on the rear end of cradle；Spraying box for it is semiclosed be body structure, it is fixedly mounted in spraying box rack；4th pressure roller is assembled in spraying box bottom, and top is evenly equipped with multiple spray tubes in spraying box, and multiple high pressure nozzles are housed on spray tube；Spraying box bottom is provided with recovery port, and is connected by recovery tube with spray tube.This pretreatment unit is simple in structure, first passes through abrasion of the physical friction realization to oxide layer, is carrying out thorough cleaning to the residual oxide layer on surface by vinegar leaching, stability is strong, safe, save trouble and labor less manpower, and pretreating effect is good.
Description
Technical field
Pretreatment unit and method before being processed the present invention relates to a kind of steel blank, specifically galvanized steel or plating
The pretreatment unit and method of blank before the heating of zinc-type steel.
Background technology
At present, during carrying out deep processing production galvanized steel or zinc-plated shaped steel with band steel blank, in order to remove strip
The oxide layer of blank surface, usually pre-processes it, and most common method is pickling, i.e., with certain density sulfuric acid to it
Immersion rinsing is carried out, in the processing procedure, a certain amount of pernicious gas can be produced, if what the concentration or soaking time of acid controlled
Inaccuracy, certain corrosion failure can be also produced to the mother metal with steel blank, and conventional method is time consuming in this, also had certain
Danger, belong to dangerous operation work post category.
The content of the invention
The present invention be directed to technical defects mentioned in the background art, one, which is to provide a kind of safe and reliable, oxide layer, takes out
The high galvanized steel blank pretreatment unit of rate, two are to provide a kind of method pre-processed using the device.
To achieve the above object, the technical solution of use is the present invention：A kind of galvanized steel blank pretreatment unit, including
Pressure roller group, cradle, friction roller group, spraying box, polishing machine and rack, the pressure roller group include the first pressure roller group, the second pressure roller
Group, the 3rd pressure roller group and the 4th pressure roller group；
Band coil of strip is rack-mounted in rotary shafts, and the first pressure roller group is installed in rotary shafts, is set up in parallel with band coil of strip；
Cradle is the frame body for the two rows of identical fence structures being set up in parallel, before the second pressure roller group is installed on cradle
End, friction roller group are installed on the rear portion of cradle, and the 3rd pressure roller group is installed on the rear end of cradle；It is also equipped with cradle multiple
Backing roll；
Spraying box for it is semiclosed be body structure, it is fixedly mounted in spraying box rack；4th pressure roller group is installed on spray
Bottom portion is drenched, top is evenly equipped with multiple spray tubes in spraying box, and multiple high pressure nozzles are housed on spray tube；Spraying box bottom is provided with
Recovery port, and connected by recovery tube with spray tube；
Polishing machine is installed in polishing rack.
Friction roller group includes multiple friction rollers being set up in parallel up and down, and the both ends of each friction roller are fixed with cradle respectively to be connected
Connect.
Friction roller is grooved roller, and the width at its channel-shaped position is more than the width of strip.
Second pressure roller group and the 3rd pressure roller group are separately mounted to the front-end and back-end of cradle, their installation site is to send
The center of rack short transverse.
Spraying box inlet is provided with a small-sized pressure roller group.
The method that galvanized steel blank pretreatment is carried out using the device, follows the steps below：
(1) it is the band coil of strip of galvanized steel blank is rack-mounted in rotary shafts, the free end with coil of strip is penetrated into the first pressure
In roller group, then penetrate in the second pressure roller group, through being sent after the backing roll on cradle to friction roller group；
(2) free end with coil of strip is from top to bottom continuously pierced by around each friction roller in S shapes, during shuttle, strip
The roll surface of surface and friction roller rubs, and removes the oxide layer on its surface；Then it is sent to the 3rd pressure roller group；
(3) be admitted to spraying box from the free end with coil of strip that the 3rd pressure roller group comes out, in spraying box, spray tube with it is outer
Portion vinegar liquid feedway connection, from high pressure nozzle to strip on spray vinegar liquid, fall into bottom vinegar liquid be recovered pipe recycling after
Spray tube is sent into be recycled；Polishing machine is admitted to after being passed through in the 4th pressure roller group；
(4) strip after polished machine processing is admitted to next process and handling.
The concentration for the vinegar liquid for spraying book in spraying box is 25-40%.
Six friction rollers are included at least in friction roller group.
Spraying box bottom is provided with bottom plate, and the upper surface of the bottom plate is ramp shaped structure；The recovery port of spraying box is arranged on bottom
On tank wall near the low side of plate.
Newly the free end with coil of strip and the tail end of grandfather tape coil of strip are linked together by connector, in transport process process
Newly wearing with coil of strip is sent for middle completion.
This pretreatment unit disclosed in this invention is simple in structure, first passes through mill of the physical friction realization to oxide layer
Damage, is carrying out thorough cleaning, stability is strong, safe, save trouble and labor people from province by vinegar leaching to the residual oxide layer on its surface
Work, pretreating effect is good, easy to the working process of the next step.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
In figure：Band coil of strip 1, the first pressure roller group 2, the second pressure roller group 3, cradle 4, rub roller group 5, the 3rd pressure roller group 6, spray
Leaching case 7, the 4th pressure roller group 8, high pressure nozzle 9, polishing machine 10, polishing rack 11, bottom plate 12, spraying box rack 13, recovery tube 14,
Rotary shafts 15.
Embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to attached drawing 1, this pretreatment unit disclosed in this invention is primarily adapted for use in zinc-plated shaped steel or galvanized steel base
The pretreatment of material.The device mainly includes band coil of strip 1, and the first pressure roller group 2, the second pressure roller group 3, cradle 4, rub roller group 5, the
Three pressure roller groups 6, spraying box 7, the 4th pressure roller group 8, high pressure nozzle 9, polishing machine 10, polishes rack 11, bottom plate 12, spraying box rack
13, recovery tube 14, rotary shafts 15.
In this galvanized steel blank pretreatment unit, pressure roller group includes the first pressure roller group, the second pressure roller group, the 3rd pressure roller
Group and the 4th pressure roller group.Rotary shafts, cradle, spraying box rack and polishing rack are set gradually along production line.Each pressure roller
Group is all made of two pressure rollers setting up and down, and pressure roller is fixedly installed with roll stand.Preferably, plain-barreled roll can be selected in pressure roller,
Grooved roller can also be selected.
Band coil of strip is rack-mounted in rotary shafts, and the first pressure roller group is installed in rotary shafts, is set up in parallel with band coil of strip；Band
On the rack-mounted pedestal in rotary shafts in both ends of the central spool of coil of strip.
Cradle is the frame body for the two rows of identical fence structures being set up in parallel, before the second pressure roller group is installed on cradle
End, friction roller group are installed on the rear portion of cradle, and the 3rd pressure roller group is installed on the rear end of cradle；It is also equipped with cradle multiple
Backing roll.Friction roller group is composed of at least six friction rollers, and each friction roller is set up in parallel up and down.The both ends of each friction roller
It is respectively and fixedly installed on cradle.Friction roller can use plain-barreled roll, can also use grooved roller, and the more general strip of groove width of grooved roller omits
Width.
Spraying box for it is semiclosed be body structure, it is fixedly mounted in spraying box rack.4th pressure roller group is installed on spray
Drench bottom portion, two two pressure rollers in the 4th pressure roller group are set up in parallel up and down.Top is evenly equipped with multiple spray tubes in spraying box, sprays
Shower pipe can be uniform parallel distribution or spiral at the top of spraying box.Multiple high pressure nozzles are housed on spray tube.Spray
Leaching bottom portion is provided with recovery port, and is connected by recovery tube with spray tube.Preferably, spraying box inlet is provided with
One small-sized pressure roller group, for enter spraying box strip carry out be oriented to and it is spacing.Second pressure roller group and the 3rd pressure roller group difference
Installed in the front-end and back-end of cradle, their installation site is the center of cradle short transverse.Strip is from the second pressure roller
Group enters cradle, is then exported by multiple friction rollers and then by the 3rd pressure roller group, strip is in friction roller according to by upper
Order under bypasses each friction roller in S shapes, forms S type movement locus.
Polishing machine is installed in polishing rack.
The method that galvanized steel blank pretreatment is carried out using above device, follows the steps below.
(1) it is the band coil of strip of galvanized steel blank is rack-mounted in rotary shafts, the free end with coil of strip is penetrated into the first pressure
In roller group, then penetrate in the second pressure roller group, through being sent after the backing roll on cradle to friction roller group, its movement locus is
From the bottom to top.
(2) free end with coil of strip is from top to bottom continuously pierced by around each friction roller in S shapes, movement locus is S-type.Wearing
During shuttle, the roll surface of belt steel surface and friction roller rubs, and removes the oxide layer on its surface；Then it is sent to the 3rd pressure
Roller group；Movement locus when finally exporting is from the bottom to top.
(3) spraying box is admitted to from the free end with coil of strip that the 3rd pressure roller group comes out, by way of small-sized pressure roller group, sprayed
In case, positioning export is carried out by the 4th pressure roller group.Spray tube is connected with exterior vinegar liquid feedway, from high pressure nozzle to strip
Upper injection vinegar liquid, carry out vinegar leaching, fall into bottom vinegar liquid be recovered pipe recycling after be sent into spray tube be recycled；In the 4th pressure
Polishing machine is admitted to after being passed through in roller group.Preferably, spraying box bottom is provided with bottom plate, and the upper surface of the bottom plate is slope
Shape structure.The recovery port of spraying box is arranged on the tank wall near the low side of bottom plate.Recovery port is in recovery tube connection.Spraying box
The concentration of the vinegar liquid of interior sprayed book is 25-40%.
(4) strip after polished machine processing is admitted to next process and handling.
If being pre-processed to the blank of shaped steel, after being exported by polishing machine, its subsequent step be successively heating-shaping-
Zinc-plated-cooling-shaping；If the pretreatment carried out to the strip of deep processing, after being exported by polishing machine, its subsequent step is successively
Heating-zinc-plated-coiled.To ensure the quality of coiled material, a water can also be installed additional outside spraying box and spray mouth, for wash zone
The remaining vinegar liquid of steel surface.
Newly the free end with coil of strip and the tail end of grandfather tape coil of strip are linked together by connector, in transport process process
Newly wearing with coil of strip is sent for middle completion.The present invention eliminates the step of tradition pickling removes strip blank surface oxide layer, passes through
The physical friction and vinegar of strip and friction roller leaching two methods carry out it processing of surface oxide layer, energy conservation and environmental protection, and reduction has
The generation and volatilization of evil gas.
Claims (10)
1. a kind of galvanized steel blank pretreatment unit, including pressure roller group, cradle, friction roller group, spraying box, polishing machine and machine
Frame, it is characterised in that the pressure roller group includes the first pressure roller group, the second pressure roller group, the 3rd pressure roller group and the 4th pressure roller group；
Band coil of strip is rack-mounted in rotary shafts, and the first pressure roller group is installed in rotary shafts, is set up in parallel with band coil of strip；
Cradle is the frame body for the two rows of identical fence structures being set up in parallel, and the second pressure roller group is installed on cradle front end, rubs
The rear portion that roller group is installed on cradle is wiped, the 3rd pressure roller group is installed on the rear end of cradle；Multiple supportings are also equipped with cradle
Roller；
Spraying box for it is semiclosed be body structure, it is fixedly mounted in spraying box rack；4th pressure roller group is installed on spraying box
Bottom, the interior top of spraying box are evenly equipped with multiple spray tubes, multiple high pressure nozzles are housed on spray tube；Spraying box bottom is provided with recycling
Mouthful, and connected by recovery tube with spray tube；
Polishing machine is installed in polishing rack.
2. galvanized steel blank pretreatment unit according to claim 1, it is characterised in that the friction roller group includes more
A friction roller being set up in parallel up and down, the both ends of each friction roller are fixedly connected with cradle respectively.
3. galvanized steel blank pretreatment unit according to claim 2, it is characterised in that the friction roller is grooved roller,
The width at its channel-shaped position is more than the width of strip.
4. galvanized steel blank pretreatment unit according to claim 1, it is characterised in that the second pressure roller group and
Three pressure roller groups are separately mounted to the front-end and back-end of cradle, their installation site is the center of cradle short transverse.
5. galvanized steel blank pretreatment unit according to claim 1, it is characterised in that the spraying box inlet peace
Equipped with a small-sized pressure roller group.
6. a kind of method that device using any one of claim 1-5 carries out galvanized steel blank pretreatment, it is special
Sign is, follows the steps below：
(1) it is the band coil of strip of galvanized steel blank is rack-mounted in rotary shafts, the free end with coil of strip is penetrated into the first pressure roller group
It is interior, then penetrate in the second pressure roller group, through being sent after the backing roll on cradle to friction roller group；
(2) free end with coil of strip is from top to bottom continuously pierced by around each friction roller in S shapes, during shuttle, belt steel surface
Rub with the roll surface of friction roller, remove the oxide layer on its surface；Then it is sent to the 3rd pressure roller group；
(3) spraying box is admitted to from the free end with coil of strip that the 3rd pressure roller group comes out, in spraying box, spray tube and outside
Vinegar liquid feedway connect, from high pressure nozzle to strip on spray vinegar liquid, fall into bottom vinegar liquid be recovered pipe recycling after be sent into
Spray tube is recycled；Polishing machine is admitted to after being passed through in the 4th pressure roller group；
(4) strip after polished machine processing is admitted to next process and handling.
7. the method for galvanized steel blank pretreatment according to claim 6, it is characterised in that sprayed in the spraying box
The concentration of the vinegar liquid of book is 25-40%.
8. the method for galvanized steel blank pretreatment according to claim 6, it is characterised in that in the friction roller group
Including at least six friction rollers.
9. the method for galvanized steel blank pretreatment according to claim 6, it is characterised in that the spraying box bottom is set
Bottom plate is equipped with, the upper surface of the bottom plate is ramp shaped structure；The recovery port of spraying box is arranged on the tank wall near the low side of bottom plate.
10. the method for galvanized steel blank pretreatment according to claim 6, it is characterised in that the newly freedom with coil of strip
Hold the tail end with grandfather tape coil of strip to link together by connector, newly wearing with coil of strip is completed during transport process and is sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610919112.6A CN107955925A (en) | 2016-10-18 | 2016-10-18 | Galvanized steel blank pretreatment unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610919112.6A CN107955925A (en) | 2016-10-18 | 2016-10-18 | Galvanized steel blank pretreatment unit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107955925A true CN107955925A (en) | 2018-04-24 |
Family
ID=61954383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610919112.6A Pending CN107955925A (en) | 2016-10-18 | 2016-10-18 | Galvanized steel blank pretreatment unit and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107955925A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050199266A1 (en) * | 2003-04-07 | 2005-09-15 | Voges Kevin C. | Method of removing scale and inhibiting oxidation and cold rolling sheet metal |
| CN102083562A (en) * | 2008-07-04 | 2011-06-01 | Posco公司 | Method and facility for removing scale from hot rolled steel sheet |
| CN102418106A (en) * | 2011-11-16 | 2012-04-18 | 陈明友 | Rust-preventing and acid-washing method of steel belt |
| CN102644044A (en) * | 2012-04-23 | 2012-08-22 | 芜湖楚江合金铜材有限公司 | Wire electrode busbar galvanizing rig and technique for galvanizing by aid of same |
| CN204224712U (en) * | 2014-11-10 | 2015-03-25 | 芜湖双源管业有限公司 | A kind of steel band pickling line |
| KR20150075298A (en) * | 2013-12-25 | 2015-07-03 | 주식회사 포스코 | Apparatus for alloy plated steel sheet having excellent surface appearance and method for the same |
| CN104128382B (en) * | 2014-03-27 | 2016-08-10 | 中冶南方工程技术有限公司 | A kind of low acid consumes anti-corrosion hot rolling acid-cleaning product processes |
| CN103920740B (en) * | 2014-03-27 | 2016-08-24 | 中冶南方工程技术有限公司 | A kind of low plate face remains with heat for cold product processes |
| CN206396304U (en) * | 2016-10-18 | 2017-08-11 | 付蕊 | Galvanized steel blank pretreatment unit |
-
2016
- 2016-10-18 CN CN201610919112.6A patent/CN107955925A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050199266A1 (en) * | 2003-04-07 | 2005-09-15 | Voges Kevin C. | Method of removing scale and inhibiting oxidation and cold rolling sheet metal |
| CN102083562A (en) * | 2008-07-04 | 2011-06-01 | Posco公司 | Method and facility for removing scale from hot rolled steel sheet |
| CN102418106A (en) * | 2011-11-16 | 2012-04-18 | 陈明友 | Rust-preventing and acid-washing method of steel belt |
| CN102644044A (en) * | 2012-04-23 | 2012-08-22 | 芜湖楚江合金铜材有限公司 | Wire electrode busbar galvanizing rig and technique for galvanizing by aid of same |
| KR20150075298A (en) * | 2013-12-25 | 2015-07-03 | 주식회사 포스코 | Apparatus for alloy plated steel sheet having excellent surface appearance and method for the same |
| CN104128382B (en) * | 2014-03-27 | 2016-08-10 | 中冶南方工程技术有限公司 | A kind of low acid consumes anti-corrosion hot rolling acid-cleaning product processes |
| CN103920740B (en) * | 2014-03-27 | 2016-08-24 | 中冶南方工程技术有限公司 | A kind of low plate face remains with heat for cold product processes |
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Application publication date: 20180424 |