CN105821362A - High-efficiency and environmentally-friendly hot dip galvanizing technique - Google Patents
High-efficiency and environmentally-friendly hot dip galvanizing technique Download PDFInfo
- Publication number
- CN105821362A CN105821362A CN201610373093.1A CN201610373093A CN105821362A CN 105821362 A CN105821362 A CN 105821362A CN 201610373093 A CN201610373093 A CN 201610373093A CN 105821362 A CN105821362 A CN 105821362A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- dip galvanizing
- acid solution
- washing
- described step
- 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
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
- C23C2/26—After-treatment
-
- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
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)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a high-efficiency and environmentally-friendly hot dip galvanizing technique. According to the high-efficiency and environmentally-friendly hot dip galvanizing technique, and the technical efficiency of hot dip galvanizing can be effectively improved; the quality of hot dip galvanizing workpieces is improved, industrial wastewater generated in the hot dip galvanizing process can be recycled, so that a large amount of water resources are saved; and meanwhile, the discharge amount of the industrial wastewater is reduced, so that the hazards to the environment are reduced.
Description
[technical field]
The present invention relates to the technical field of hot-dip galvanizing technique, the technical field of the hot-dip galvanizing technique of a kind of high-efficiency environment friendly.
[background technology]
Galvanizing is to make motlten metal and iron-based precursor reactant produce alloy-layer, so that both matrix and coating combine.Galvanizing is first steel piece to be carried out pickling, in order to remove the ferrum oxide on steel piece surface, after pickling, by being carried out in ammonium chloride or solder(ing)acid or ammonium chloride and zinc chloride mixed aqueous solution groove, is then fed in hot-dip tank.It is uniform that galvanizing has coating, and adhesive force is strong, service life the advantage such as length.The principle of galvanizing by dipping, is the most i.e. by the ironware of cleaning, via the wetting action of fluxing agent, immerses in zinc bath, makes iron and steel and fused zinc react the epithelium generating an alloying.Good galvanizing by dipping operation, should be each flow process all under strict control, thoroughly play the function of this flow process.And if the operation of previous flow process is not good at, the chain untoward reaction of follow-up flow process can be caused, and rolls up operating cost or cause bad hot dip galvanized product.Environmental pollution by water protection was increasingly paid attention to by country in recent years, and in order to solve produced industrial wastewater in hot dip galvanizing process, zinc-plated enterprise to consume substantial amounts of water resource, and processing cost increases substantially.
[summary of the invention]
The purpose of the present invention solves the problems of the prior art exactly, the hot-dip galvanizing technique of a kind of high-efficiency environment friendly is proposed, the process efficiency of galvanizing by dipping can be effectively improved, promote the quality of hot dipping zinc-plating workpiece, industrial wastewater produced in hot dip galvanizing process can also be circulated utilization, save substantial amounts of water resource, decreased the discharge capacity of industrial wastewater simultaneously, reduce the harm to environment.
For achieving the above object, the present invention proposes the hot-dip galvanizing technique of a kind of high-efficiency environment friendly, comprises the following steps successively:
Step one: choose the workpiece preparing galvanizing by dipping, whether workpiece deforms, corrosion is the most serious, whether pre-discharge orifice meets design specification, whether surface of the work has especially in inspection, Colophonium etc. can cause bad epithelium；
Step 2: add acid solution in returned acid washing trough, and add appropriate utral degreaser in acid solution, be mixed into acid solution mixture by backflow；
Step 3: workpiece step one chosen is immersed in acid solution mixture prepared by step 2, stand a period of time, remove oils and fats and the scale of surface of the work, accelerated the exposure rate of acid solution mixture and surface of the work by backflow effect, promote defat rust cleaning reaction efficiency；
Step 4: the workpiece after step 3 being processed is put into washing and drying groove and carried out washing and drying process, washes away the acid solution mixture of residual on workpiece, and workpiece is dried process；
Step 5: adding cosolvent in cosolvent groove, after step 4 being processed, workpiece is immersed in cosolvent groove, stands a period of time, make surface of the work one layer temporary transient rust inhibition of formation helps plating epithelium；
Step 6: the workpiece after step 5 being processed is immersed in galvanized pot a period of time by suspender, in immersion processes, suspender drives workpiece slowly to rotate, and makes workpiece contact the most thorough with zinc liquid；
Step 7: workpiece after step 6 process being put into heat exchange cooling bath and cools down, suppression alloy-layer is grown up, and promotes the smooth of zinc-plated epithelium and brightness, the outside of heat exchange cooling bath is passed through the washing waste water of step 4 generation and carries out heat exchange circulation；
Step 8: the workpiece after step 7 being processed carries out cadmia, the modification on surfaces such as dripping of hanging down and workpiece and arranges, and obtains finished work-piece；
Step 9: the finished work-piece after step 8 being processed carries out censorship, registers warehouse-in after the assay was approved.
As preferably, the acid solution of described step 2 is concentration 3～the hydrochloric acid solution of 20%, and the operation temperature of described step 3 is 20 DEG C～35 DEG C.
As preferably, the washing and drying of described step 4 processes and is divided into spray washing, submergence washing, three steps of removal moisture drying.
As preferably, the cosolvent of described step 5 is concentration 17～the zinc ammonium chloride solution of 25%, and the pH value of zinc ammonium chloride solution is 4.5～5.5, and the operation temperature of described step 5 is 65 DEG C～100 DEG C.
As preferably, the Zn content more than 98.0% of zinc liquid in described step 6, the operation temperature of described step 6 is 435 DEG C～445 DEG C, and the time of immersing, thickness was the thickest depending on thickness of workpiece, immersed the time the longest.
As preferably, the chilling temperature of described step 7 is 50 DEG C～100 DEG C, and cool time, thickness was the thickest depending on thickness of workpiece, and cool time is the longest, and in described step 7, to carry out the flow of heat exchange circulation adjustable for washing waste water.
Beneficial effects of the present invention: the present invention can be effectively improved the process efficiency of galvanizing by dipping, promote the quality of hot dipping zinc-plating workpiece, industrial wastewater produced in hot dip galvanizing process can also be circulated utilization, save substantial amounts of water resource, decrease the discharge capacity of industrial wastewater simultaneously, reduce the harm to environment.
Inventive feature and advantage will be described in detail by embodiment.
[detailed description of the invention]
The present invention proposes the hot-dip galvanizing technique of a kind of high-efficiency environment friendly, comprises the following steps successively:
Step one: choose the workpiece preparing galvanizing by dipping, whether workpiece deforms, corrosion is the most serious, whether pre-discharge orifice meets design specification, whether surface of the work has especially in inspection, Colophonium etc. can cause bad epithelium；
Step 2: add acid solution in returned acid washing trough, and add appropriate utral degreaser in acid solution, be mixed into acid solution mixture by backflow；
Step 3: workpiece step one chosen is immersed in acid solution mixture prepared by step 2, stand a period of time, remove oils and fats and the scale of surface of the work, accelerated the exposure rate of acid solution mixture and surface of the work by backflow effect, promote defat rust cleaning reaction efficiency；
Step 4: the workpiece after step 3 being processed is put into washing and drying groove and carried out washing and drying process, washes away the acid solution mixture of residual on workpiece, and workpiece is dried process；
Step 5: adding cosolvent in cosolvent groove, after step 4 being processed, workpiece is immersed in cosolvent groove, stands a period of time, make surface of the work one layer temporary transient rust inhibition of formation helps plating epithelium；
Step 6: the workpiece after step 5 being processed is immersed in galvanized pot a period of time by suspender, in immersion processes, suspender drives workpiece slowly to rotate, and makes workpiece contact the most thorough with zinc liquid；
Step 7: workpiece after step 6 process being put into heat exchange cooling bath and cools down, suppression alloy-layer is grown up, and promotes the smooth of zinc-plated epithelium and brightness, the outside of heat exchange cooling bath is passed through the washing waste water of step 4 generation and carries out heat exchange circulation；
Step 8: the workpiece after step 7 being processed carries out cadmia, the modification on surfaces such as dripping of hanging down and workpiece and arranges, and obtains finished work-piece；
Step 9: the finished work-piece after step 8 being processed carries out censorship, registers warehouse-in after the assay was approved.
As preferably, the acid solution of described step 2 is concentration 3～the hydrochloric acid solution of 20%, and the operation temperature of described step 3 is 20 DEG C～35 DEG C；
The washing and drying of described step 4 processes and is divided into spray washing, submergence is washed, three steps of removal moisture drying, the cosolvent of described step 5 is concentration 17～the zinc ammonium chloride solution of 25%, the pH value of zinc ammonium chloride solution is 4.5～5.5, the operation temperature of described step 5 is 65 DEG C～100 DEG C, the Zn content more than 98.0% of zinc liquid in described step 6, the operation temperature of described step 6 is 435 DEG C～445 DEG C, the immersion time is depending on thickness of workpiece, thickness is the thickest, the immersion time is the longest, the chilling temperature of described step 7 is 50 DEG C～100 DEG C, cool time is depending on thickness of workpiece, thickness is the thickest, cool time is the longest, in described step 7, to carry out the flow of heat exchange circulation adjustable for washing waste water.
The present invention can be effectively improved the process efficiency of galvanizing by dipping, promote the quality of hot dipping zinc-plating workpiece, additionally it is possible to industrial wastewater produced in hot dip galvanizing process is circulated utilization, has saved substantial amounts of water resource, decrease the discharge capacity of industrial wastewater simultaneously, reduce the harm to environment.
Above-described embodiment is the description of the invention, is not limitation of the invention, any scheme after simple transformation of the present invention is belonged to protection scope of the present invention.
Claims (6)
1. the hot-dip galvanizing technique of a high-efficiency environment friendly, it is characterised in that: comprise the following steps successively:
Step one: choose the workpiece preparing galvanizing by dipping, whether workpiece deforms, corrosion is the most serious, whether pre-discharge orifice meets design specification, whether surface of the work has especially in inspection, Colophonium etc. can cause bad epithelium；
Step 2: add acid solution in returned acid washing trough, and add appropriate utral degreaser in acid solution, be mixed into acid solution mixture by backflow；
Step 3: workpiece step one chosen is immersed in acid solution mixture prepared by step 2, stand a period of time, remove oils and fats and the scale of surface of the work, accelerated the exposure rate of acid solution mixture and surface of the work by backflow effect, promote defat rust cleaning reaction efficiency；
Step 4: the workpiece after step 3 being processed is put into washing and drying groove and carried out washing and drying process, washes away the acid solution mixture of residual on workpiece, and workpiece is dried process；
Step 5: adding cosolvent in cosolvent groove, after step 4 being processed, workpiece is immersed in cosolvent groove, stands a period of time, make surface of the work one layer temporary transient rust inhibition of formation helps plating epithelium；
Step 6: the workpiece after step 5 being processed is immersed in galvanized pot a period of time by suspender, in immersion processes, suspender drives workpiece slowly to rotate, and makes workpiece contact the most thorough with zinc liquid；
Step 7: workpiece after step 6 process being put into heat exchange cooling bath and cools down, suppression alloy-layer is grown up, and promotes the smooth of zinc-plated epithelium and brightness, the outside of heat exchange cooling bath is passed through the washing waste water of step 4 generation and carries out heat exchange circulation；
Step 8: the workpiece after step 7 being processed carries out cadmia, the modification on surfaces such as dripping of hanging down and workpiece and arranges, and obtains finished work-piece；
Step 9: the finished work-piece after step 8 being processed carries out censorship, registers warehouse-in after the assay was approved.
The hot-dip galvanizing technique of a kind of high-efficiency environment friendly the most as claimed in claim 1, it is characterised in that: the acid solution of described step 2 is concentration 3～the hydrochloric acid solution of 20%, and the operation temperature of described step 3 is 20 DEG C～35 DEG C.
The hot-dip galvanizing technique of a kind of high-efficiency environment friendly the most as claimed in claim 1, it is characterised in that: the washing and drying of described step 4 processes and is divided into spray washing, submergence washing, three steps of removal moisture drying.
The hot-dip galvanizing technique of a kind of high-efficiency environment friendly the most as claimed in claim 1, it is characterized in that: the cosolvent of described step 5 is concentration 17～the zinc ammonium chloride solution of 25%, the pH value of zinc ammonium chloride solution is 4.5～5.5, and the operation temperature of described step 5 is 65 DEG C～100 DEG C.
The hot-dip galvanizing technique of a kind of high-efficiency environment friendly the most as claimed in claim 1, it is characterized in that: the Zn content more than 98.0% of zinc liquid in described step 6, the operation temperature of described step 6 is 435 DEG C～445 DEG C, and the time of immersing is depending on thickness of workpiece, thickness is the thickest, immerses the time the longest.
The hot-dip galvanizing technique of a kind of high-efficiency environment friendly the most as claimed in claim 1, it is characterized in that: the chilling temperature of described step 7 is 50 DEG C～100 DEG C, cool time is depending on thickness of workpiece, thickness is the thickest, cool time is the longest, and in described step 7, to carry out the flow of heat exchange circulation adjustable for washing waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373093.1A CN105821362A (en) | 2016-05-30 | 2016-05-30 | High-efficiency and environmentally-friendly hot dip galvanizing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373093.1A CN105821362A (en) | 2016-05-30 | 2016-05-30 | High-efficiency and environmentally-friendly hot dip galvanizing technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105821362A true CN105821362A (en) | 2016-08-03 |
Family
ID=56531731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610373093.1A Pending CN105821362A (en) | 2016-05-30 | 2016-05-30 | High-efficiency and environmentally-friendly hot dip galvanizing technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105821362A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06158254A (en) * | 1992-11-21 | 1994-06-07 | Sumitomo Metal Ind Ltd | Manufacture of hot-dip galvannealed steel sheet |
| CN102363875A (en) * | 2011-10-27 | 2012-02-29 | 北京京杰锐思技术开发有限公司 | Hot dip galvanizing method of steel structural members |
| CN104561876A (en) * | 2014-12-30 | 2015-04-29 | 广东运通热镀锌厂有限公司 | Hot galvanizing technical method |
| CN105331919A (en) * | 2015-12-03 | 2016-02-17 | 成都朋昌电力构件有限公司 | Metal part zinc dipping treatment process |
| CN105603349A (en) * | 2016-01-06 | 2016-05-25 | 云南东电线路器材有限公司 | Hot galvanizing process |
-
2016
- 2016-05-30 CN CN201610373093.1A patent/CN105821362A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06158254A (en) * | 1992-11-21 | 1994-06-07 | Sumitomo Metal Ind Ltd | Manufacture of hot-dip galvannealed steel sheet |
| CN102363875A (en) * | 2011-10-27 | 2012-02-29 | 北京京杰锐思技术开发有限公司 | Hot dip galvanizing method of steel structural members |
| CN104561876A (en) * | 2014-12-30 | 2015-04-29 | 广东运通热镀锌厂有限公司 | Hot galvanizing technical method |
| CN105331919A (en) * | 2015-12-03 | 2016-02-17 | 成都朋昌电力构件有限公司 | Metal part zinc dipping treatment process |
| CN105603349A (en) * | 2016-01-06 | 2016-05-25 | 云南东电线路器材有限公司 | Hot galvanizing process |
Non-Patent Citations (1)
| Title |
|---|
| 彼得梅斯: "《热浸镀锌手册》", 30 November 2015, 机械工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105603349A (en) | Hot galvanizing process | |
| CN101665895B (en) | Composite method of plating steel by hot dipping | |
| CN101045980A (en) | High aluminium zinc alloy hot dip coating process for iron steel product | |
| CN103243338A (en) | Acid cleaning and phosphorizing method of electromobile frame | |
| CN103668030A (en) | Improved hot galvanizing method of iron handicraft or furniture | |
| CN109852914A (en) | A kind of high-strength alloyed steel plate hot dip galvanizing process | |
| CN108914168A (en) | A kind of sheet metal surface treatment process | |
| CN101876078A (en) | Additive for pickling degreasing and derusting of steel | |
| CN108950447A (en) | A kind of metal works zincincation | |
| CN104178718A (en) | Production method of prestressed hot-galvanized steel wire for bridge | |
| CN107574430A (en) | A kind of silicate bright blue passivation liquid and preparation method thereof | |
| CN105648378A (en) | Antirust heat treatment technology for spare parts | |
| CN110565036A (en) | hot-dip galvanizing production method for electric power iron tower connecting piece with uniform surface zinc layer thickness | |
| CN107740022B (en) | A kind of hot-dip aluminum zinc magnesium alloy fluxing agent | |
| CN101514464A (en) | Rolled thin steel plate galvanizing technique | |
| CN103589981A (en) | Formula of hot galvanizing plating auxiliary | |
| CN101514463A (en) | Quick zinc sulfate electroplating process | |
| CN103014578A (en) | Formulation of hot galvanizing fluxing agent | |
| CN105821362A (en) | High-efficiency and environmentally-friendly hot dip galvanizing technique | |
| CN107699834A (en) | A kind of heat dip zinc treating technique | |
| CN109440039A (en) | A kind of production technology of galvanized wire | |
| CN106868438A (en) | Steel structure zincincation | |
| CN112695312A (en) | Molybdenum-zirconium type phosphorus-free passivator, metal part and surface passivation treatment method thereof | |
| CN105369311A (en) | Bright dipping method for galvanized workpiece | |
| CN113969383B (en) | Hot-dip plating method for copper wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |