CN116607094A - Production process of galvanized iron wire - Google Patents
Production process of galvanized iron wire Download PDFInfo
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- CN116607094A CN116607094A CN202310547577.3A CN202310547577A CN116607094A CN 116607094 A CN116607094 A CN 116607094A CN 202310547577 A CN202310547577 A CN 202310547577A CN 116607094 A CN116607094 A CN 116607094A
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- treatment
- galvanized iron
- production
- water
- iron wires
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011701 zinc Substances 0.000 claims abstract description 24
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000007747 plating Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000005246 galvanizing Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 16
- 238000005554 pickling Methods 0.000 claims abstract description 15
- 238000007598 dipping method Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000002203 pretreatment Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 238000005238 degreasing Methods 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 8
- 239000003112 inhibitor Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- 238000004383 yellowing Methods 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 12
- 239000001257 hydrogen Substances 0.000 abstract description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000011159 matrix material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000314 lubricant Substances 0.000 abstract description 5
- 238000007665 sagging Methods 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 150000002431 hydrogen Chemical class 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 238000003618 dip coating Methods 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 101100006584 Mus musculus Clnk gene Proteins 0.000 description 3
- 206010040954 Skin wrinkling Diseases 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000008237 rinsing water Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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
- C23C2/04—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
-
- 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
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
-
- 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
- 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
- C23C2/38—Wires; Tubes
-
- 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
- C23C2/50—Controlling or regulating the coating processes
-
- 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
- C23C2/50—Controlling or regulating the coating processes
- C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing
- C23C2/522—Temperature of the bath
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention relates to the technical field of galvanized iron wire production, and discloses a production process of galvanized iron wires, which comprises the following steps: the first step: selecting raw materials after determining a production mode; and a second step of: carrying out drawing pretreatment; and a third step of: drawing and forming; fourth step: pre-treatment of galvanization; fifth step: and (5) hot galvanizing. The drying and dewatering are arranged to remove water and hydrogen, namely the hydrogen which invades the iron matrix in the pickling process is removed, the purposes of eliminating hydrogen embrittlement, recovering the plasticity of the wire rod, removing the water on the surface of the wire rod and drying the wire rod are achieved, the practical effect of the lubricant is prevented from being deteriorated by the water, and the product quality of the whole galvanized iron wire production is improved; the zinc dipping temperature is 450-470 ℃, the zinc dipping time is 0.5-1.5min, sagging and wrinkling phenomena are reduced, the adhesive force is strong, the plating layer is thin, the appearance is good, and the production efficiency is high.
Description
Technical Field
The invention relates to the technical field of galvanized iron wire production, in particular to a production process of galvanized iron wires.
Background
Hot galvanizing is also called hot dip galvanizing and hot dip galvanizing, is an effective metal corrosion prevention mode, is mainly used on metal structure facilities in various industries, and is characterized in that rust-removed steel is immersed into molten zinc liquid to enable zinc layers to be attached to the surfaces of steel components, so that the corrosion prevention purpose is achieved, galvanized wires are processed by high-quality low-carbon steel wire rods, and the galvanized wires are processed by the technological processes of drawing forming, pickling rust removal, high-temperature annealing, hot galvanizing, cooling and the like. The galvanized iron wire has good toughness and elasticity, and is widely used in various fields of construction, handicraft articles, woven silk screens, highway protective barriers, product packaging, daily civilian use and the like.
The traditional galvanization process has the defects of poor quality of a galvanization layer, low brightness, large consumption of a surfactant, serious three-waste pollution, environmental protection and the like, and seriously influences the further development and application of galvanized iron wires.
Therefore, the technical problem to be solved by the invention is how to improve the production process of the galvanized iron wire, so that the quality and the brightness of the galvanized iron wire are improved, and the galvanized iron wire is more environment-friendly in the production process.
For this purpose, we propose a process for the production of galvanized iron wires.
Disclosure of Invention
The invention mainly solves the technical problems existing in the prior art and provides a production process of galvanized iron wires.
In order to achieve the above purpose, the invention adopts the following technical scheme that the production process of the galvanized iron wire comprises the following steps:
the first step: selecting raw materials after determining a production mode;
and a second step of: carrying out drawing pretreatment;
and a third step of: drawing and forming;
fourth step: pre-treatment of galvanization;
fifth step: and (5) hot galvanizing.
Preferably, the drawing pretreatment includes the steps of:
the first step: chemical dephosphorization;
and a second step of: acid washing and rust removal;
and a third step of: coating treatment;
fourth step: and (5) drying and dewatering.
Preferably, the pre-galvanization treatment comprises the steps of:
the first step: degreasing;
and a second step of: washing with water;
and a third step of: and (5) acid washing treatment.
Preferably, the hot dip galvanizing comprises the following steps:
the first step: washing with water;
and a second step of: entering a plating assisting tank for plating assisting treatment;
and a third step of: drying and preheating;
fourth step: performing hot galvanizing treatment;
fifth step: finishing;
sixth step: cooling;
seventh step: passivating;
eighth step: rinsing;
ninth step: drying;
tenth step: and checking whether the finished product is qualified or not.
Preferably, the chemical dephosphorization is to remove the iron scale on the surface of the wire rod or the intermediate wire blank, so as to prevent the iron scale from damaging the surfaces of the die and the iron wire during drawing, prepare good surface conditions for subsequent coating treatment and reduce friction during drawing and reduce drawing force.
Preferably, the coating treatment adopts one of lime dipping, yellowing, phosphating, copper plating and borax treatment.
Preferably, the degreasing treatment adopts chemical degreasing or water-based metal degreasing cleaning agent degreasing until the workpiece is completely immersed in water.
Preferably, the pickling treatment requires the addition of corrosion inhibitors and mist inhibitors.
Advantageous effects
The invention provides a production process of galvanized iron wires. The beneficial effects are as follows:
(1) According to the production process of the galvanized iron wire, moisture and hydrogen are removed by drying and dewatering, namely, hydrogen which invades an iron matrix in an acid washing process is removed, so that hydrogen embrittlement is removed, plasticity of the wire rod is recovered, the moisture on the surface of the wire rod is removed, and the wire rod is dried, so that the practical effect of a lubricant is prevented from being deteriorated by the moisture, and the production quality of the whole galvanized iron wire is improved; the zinc dipping temperature is 450-470 ℃, the zinc dipping time is 0.5-1.5min, sagging and wrinkling phenomena are reduced, the adhesive force is strong, the plating layer is thin, the appearance is good, and the production efficiency is high.
(2) The production process of the galvanized iron wire is used for preventing the iron wire from being deformed due to rapid temperature rise during dip plating, removing residual moisture and preventing zinc explosion and zinc liquid splash.
(3) The production process of the galvanized iron wire adopts chromium-free passivation, does not pollute the environment, and meets the environmental protection requirement.
Drawings
FIG. 1 is a flow chart of the production process of the invention.
Detailed Description
The production process of the galvanized iron wire, as shown in figure 1, comprises the following steps:
the first step: selecting raw materials after determining a production mode; the production of iron wires is mainly based on the standard requirement of products, and the production mode is determined. The product standard is the tie between the supplier and the customer. According to the product standard, a reasonable process is adopted to carry out scientific management, so that the product qualification is ensured. In iron wire production, the same steel grade (same chemical composition) adopts different standards and the production modes are different. Because the steel wire microstructures produced by the continuous line and the periodic line are different, the mechanical properties are different and the technological properties are different, the continuous line and the periodic line have different purposes, and therefore, the raw materials with proper types and matched uploading modes are selected according to the production purposes.
And a second step of: carrying out drawing pretreatment; the pre-drawing treatment comprises chemical dephosphorization: the method comprises the steps of removing iron oxide scales, namely removing the iron oxide scales on the surface of a wire rod or an intermediate wire blank, so as to prevent the iron oxide scales from damaging the surfaces of a die and an iron wire during drawing, prepare good surface conditions for subsequent coating or plating treatment, reduce friction during drawing and reduce drawing force; acid washing and rust removal: the rust removing method is to soak the rust removing agent in a strong acid solution, wherein the strong acid solution is hydrochloric acid or nitric acid solution with the mass concentration of 40-50%; and (3) coating treatment: the coating treatment is to coat a firm film coating formed by substances which have certain lubricating property and can effectively adsorb and carry lubricant into a deformation area during drawing on the surface of a wire rod or an intermediate wire blank after oxide scale removal and rust removal, so that the coating is essentially a carrier of the lubricant, the purpose of the coating is to create good lubricating conditions for drawing so as to reduce friction and heating in the drawing process, and the treatment method comprises two major types of physical methods and chemical methods, wherein the main forms are lime dipping, yellowing, phosphating, copper plating, borax treatment and the like; and (3) drying and removing water: after removing moisture and hydrogen, the wire rod or intermediate wire rod blank is subjected to chemical descaling and coating treatment, the wire rod or intermediate wire rod blank is heated at a low temperature for drying in order to remove the hydrogen and the moisture, the drying temperature is generally 26l-300 ℃, the temperature is not too high to prevent the lubrication coating from losing efficacy, the hydrogen is removed, namely the hydrogen which invades an iron matrix in the pickling process is removed, the purposes of removing hydrogen embrittlement, recovering the plasticity of the wire rod and removing the moisture on the surface of the wire rod to dry are to prevent the moisture from deteriorating the practical effect of the lubricant;
and a third step of: drawing and forming; and drawing and forming the wire rod by using a wire drawing machine.
Fourth step: pre-treatment of galvanization; the pre-galvanization treatment comprises degreasing treatment: degreasing by adopting chemical degreasing or water-based metal degreasing cleaning agent until the workpiece is completely immersed by water; and (3) water washing treatment: washing away the cleaning agent and the like used in the degreasing process, wherein the washing time is 1-3 minutes, and the water temperature is room temperature; acid washing: before an iron wire enters a pickling tank, firstly checking whether the iron wire is damaged and deformed, if the surface is damaged and deformed, removing the iron wire immediately if the surface is damaged and deformed, if the surface is found to be damaged and deformed, returning to a degreasing process to clean the oil dirt, then pickling, and carrying out pickling, wherein a quality inspector cannot be treated, and immediately informing a quality inspector that 15% H2SO4,0.1% thiourea or 20% HCl and 3-5g/L urotropine are adopted for pickling, wherein a corrosion inhibitor is added to prevent the matrix from being corroded and reduce the hydrogen absorption amount of an iron matrix, and meanwhile, a mist inhibitor is added to inhibit acid mist from escaping, the poor degreasing and pickling treatment can cause poor coating adhesion, no zinc or zinc layer is removed, and the pickling time is determined according to the corrosion condition of the surface of a workpiece: first-order: the surface is substantially rust-free or has been machined (pickling time 30-60 minutes); and (2) second-stage: the oxide layer is thinner and the surface is smooth (pickling time is 60-120 minutes); three stages: the surface of the copper alloy has thicker oxide layer and is uneven (pickling time is 120-200 minutes); four stages: the surface rust is serious, the oxide layer is seriously pitted and uneven (the pickling time is more than 200 minutes).
Fifth step: and (5) hot galvanizing. Hot galvanizing comprises water washing: acid liquor on the surface of the iron wire is removed, the rinsing water quality is required to be clean, the water washing time is 1-3 minutes, the water temperature is room temperature, and after the rinsing water on the iron wire is basically dripped, the iron wire can enter a plating assisting tank for plating assisting treatment; entering a plating assisting tank for plating assisting treatment: the dip-coating solvent is also called solvent, can keep the workpiece to have certain activity before hot-dip coating to avoid secondary oxidation so as to strengthen the combination of a coating and a matrix, wherein the dip-coating solvent comprises 100-150g/L NH4CL, 150-189g/L Zncl and an explosion-proof agent, the condition of adding the dip-coating solvent is 70-80 ℃ for 1-2min, and a certain amount of the explosion-proof agent is added to prevent the dip-coating solvent from splashing to hurt people; drying and preheating: the drying and preheating is to prevent the iron wire from deforming due to rapid temperature rise during dip plating, remove residual moisture, prevent zinc explosion and splash of zinc liquid, and preheat at 80-140 ℃; and (3) hot galvanizing: the hot galvanizing treatment is to control the temperature of the zinc liquid, the hot galvanizing time and the speed of leading the workpiece out of the zinc liquid, wherein the leading-out speed is generally 1.5 m/min, the temperature is too low, the fluidity of the zinc liquid is poor, the thickness of a plating layer is uneven, sagging is easy to generate, the appearance quality is poor, the temperature is high, the fluidity of the zinc liquid is good, the zinc liquid is easy to separate from the workpiece, a large amount of zinc slag is generated, and the zinc consumption is high, so that the zinc dipping time is 0.5-1.5min, sagging and wrinkling phenomena are reduced, the adhesive force is strong, the plating layer is thin, the appearance is good, and the production efficiency is high; and (3) finishing: finishing is mainly to remove residual zinc and zinc nodules on the surface, and is completed by adopting a vibrator special for hot galvanizing; and (3) cooling: the cooling is generally water-cooled, but the temperature is not too low or too high, and the temperature is between 30 and 70 ℃; passivation: the aim of passivation is to improve the atmospheric corrosion resistance of the surface of the workpiece, reduce or prolong the occurrence time of white rust and keep the plating layer to have good appearance, wherein the passivation is performed by adopting chromates, such as Na2Cr207 of 80-100g/L and sulfuric acid of 3-4mL, and chromium-free passivation can also be adopted, so that the environment is not polluted; rinsing: the rinsing water quality is required to be clean, the washing time is 1-3 minutes, and the water temperature is room temperature; and (3) drying: quick drying is carried out by adopting a high-temperature air drying method; checking whether the finished product is qualified or not: the appearance of the coating is verified to be bright and fine, sagging and skin wrinkling are avoided, the thickness test can be carried out by adopting a coating thickness meter, the method is simple, the thickness of the coating can be obtained by converting the attachment quantity of zinc, the bonding strength can be tested by adopting a bending press machine or a heavy hammer knocking, and the salt spray test and the copper sulfate etching test can be carried out in batches.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A production process of galvanized iron wires is characterized in that: the method comprises the following steps:
the first step: selecting raw materials after determining a production mode;
and a second step of: carrying out drawing pretreatment;
and a third step of: drawing and forming;
fourth step: pre-treatment of galvanization;
fifth step: and (5) hot galvanizing.
2. The process for producing galvanized iron wires according to claim 1, characterized in that: the drawing pretreatment comprises the following steps:
the first step: chemical dephosphorization;
and a second step of: acid washing and rust removal;
and a third step of: coating treatment;
fourth step: and (5) drying and dewatering.
3. The process for producing galvanized iron wires according to claim 1, characterized in that: the zinc plating pretreatment comprises the following steps:
the first step: degreasing;
and a second step of: washing with water;
and a third step of: and (5) acid washing treatment.
4. The process for producing galvanized iron wires according to claim 1, characterized in that: the hot galvanizing comprises the following steps:
the first step: washing with water;
and a second step of: entering a plating assisting tank for plating assisting treatment;
and a third step of: drying and preheating;
fourth step: performing hot galvanizing treatment;
fifth step: finishing;
sixth step: cooling;
seventh step: passivating;
eighth step: rinsing;
ninth step: drying;
tenth step: and checking whether the finished product is qualified or not.
5. The process for producing galvanized iron wires according to claim 2, characterized in that: the chemical dephosphorization is to remove the iron scale on the surface of a wire rod or an intermediate wire blank by removing the iron scale, and aims to prevent the iron scale from damaging the surfaces of a die and an iron wire during drawing, prepare good surface conditions for subsequent coating treatment and reduce friction during drawing and reduce drawing force.
6. The process for producing galvanized iron wires according to claim 2, characterized in that: the coating treatment adopts one of lime dipping, yellowing, phosphating, copper plating and borax treatment.
7. A process for the production of galvanized iron wires according to claim 3, characterized in that: the degreasing treatment adopts chemical degreasing or water-based metal degreasing cleaning agent degreasing to achieve that the workpiece is completely immersed by water.
8. A process for the production of galvanized iron wires according to claim 3, characterized in that: the pickling treatment requires the addition of corrosion inhibitors and mist inhibitors.
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