CN111778499A - Method for manufacturing corrosion-resistant steel strand - Google Patents
Method for manufacturing corrosion-resistant steel strand Download PDFInfo
- Publication number
- CN111778499A CN111778499A CN202010504831.8A CN202010504831A CN111778499A CN 111778499 A CN111778499 A CN 111778499A CN 202010504831 A CN202010504831 A CN 202010504831A CN 111778499 A CN111778499 A CN 111778499A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- phosphating
- steel strand
- aluminum alloy
- wire
- 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
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/12—Orthophosphates containing zinc cations
- C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions
-
- 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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
-
- 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
- C23C2/38—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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
- C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only with at least one zinc-based layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention relates to the technical field of steel strand manufacturing, in particular to a method for manufacturing a corrosion-resistant steel strand, which takes 77MnA steel wire rod as a raw material and adopts phosphating solution with H as a component3PO410g/L，Zn(H2PO4)342g/L，Zn(NO3)265g/L，NaNO20.5g/L，Al2O30.05g/L, and Al2O3The grain size is less than or equal to 10 mu m, and the process parameters and the related process steps are improved, so that the comprehensive performance of the steel strand is improved, the service life of the steel strand is prolonged, and the application cost of the steel strand is reduced.
Description
Technical Field
The invention relates to the technical field of steel strand manufacturing, in particular to a manufacturing method of a corrosion-resistant steel strand.
Background
With the development of steel cable bridge construction in China, the requirement on the corrosion resistance of steel stranded wires for bridge construction is higher and higher, so that the purpose of prolonging the service life of the bridge is achieved. At present, in the aspect of corrosion resistance of a steel strand, a process of hot galvanizing and then hot galvanizing an aluminum-rare earth alloy layer is generally adopted to enhance the corrosion resistance, but the strength and toughness of the steel strand wire obtained by the process are difficult to meet the requirements of the steel strand for a bridge cable on the strength, toughness, service life and the like. Therefore, some researchers in the prior art have studied the preparation process of a zinc-aluminum alloy layer prestressed steel strand with good corrosion resistance, high strength, high toughness, improved fatigue resistance and prolonged service life, for example, a method for preparing a zinc-aluminum alloy coating prestressed steel strand with patent number 201510333390.9, which comprises the steps of selecting a high-carbon steel wire rod, carrying out acid washing, phosphating, drawing treatment and galvanizing operation in sequence, wherein the wire running speed is 20-28m/min, putting the steel wire into an open flame furnace to improve the steel wire structure, carrying out alkali washing, water washing, acid washing and water washing, then carrying out plating assistant, drying and galvanizing operation, then carrying out plating assistant, drying and galvanizing alloy layer operation, and carrying out finishing, stranding and stabilizing treatment to obtain the zinc-aluminum alloy layer prestressed steel strand. The corrosion resistance of the steel wire is improved, the strength of the steel strand reaches 1920-1950MPa, a salt spray test shows that the corrosion resistance of the steel strand is improved by more than 2 times, 200 ten thousand times of unbreakable saddle fatigue is met, the relaxation rate is 1.2-1.4%, and the comprehensive performance of the steel strand is greatly improved. In the process, the wire rod after acid washing is placed in a phosphating tank for 4min at the phosphating temperature of 87 ℃, and phosphating solution is pyrophosphate solution, so that the phosphating film forming effect is poor, the drawing effect and efficiency are influenced, even the performance of the drawn steel wire is influenced, and the comprehensive performance of the prepared steel strand is still not ideal.
In view of the above, the present inventor, based on the previous research, develops an improved research on the production process of the zinc-aluminum alloy coating prestressed steel strand with reference to the previous research conclusion, and through the continuous effort and creative work of the inventor, combined with the research and development progress of the phosphating promoting reagent, starts in the year 2020 and the month of the year 2020, develops an optimization test research on the production process of the zinc-aluminum alloy coating prestressed steel strand in a company laboratory, improves the relevant parameters and steps of the production process of the zinc-aluminum alloy coating prestressed steel strand, improves the comprehensive performance of the steel strand, and provides a new idea for the production of the zinc-aluminum alloy coating prestressed steel strand.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a method for manufacturing a corrosion-resistant steel strand.
The method is realized by the following technical scheme:
the invention provides a method for manufacturing a corrosion-resistant steel strand, which comprises the following steps:
(1) selecting a 77MnA steel wire rod, carrying out acid washing and phosphating treatment on the wire rod, and carrying out multi-pass drawing on the wire rod by adopting a wire drawing machine to obtain a semi-finished steel wire;
(2) galvanizing the semi-finished steel wire, and galvanizing the semi-finished steel wire by carrying out lead bath, alkali washing, acid washing, water washing, drying and feeding the semi-finished steel wire into a pure zinc pot to galvanize to obtain a galvanized steel wire;
(3) feeding the galvanized steel wire into a zinc-aluminum alloy pot to obtain a galvanized aluminum alloy steel wire;
(4) carrying out fine drawing on the galvanized aluminum alloy steel wire by using a drawing machine to obtain a required outer layer wire;
(5) stranding the galvanized aluminum alloy steel wire in the step (3) and outer layer wires by taking the galvanized aluminum alloy steel wire as a central steel wire, wherein the lay length multiple is 12-16 times, and thus obtaining a primary finished product of the steel strand;
(6) pre-tensioning the steel strand by 42-45% of the maximum force of the steel strand, and heating the steel strand to a temperature of between 360 DEG and 380 ℃;
the phosphating treatment is to place the wire rod into a phosphating tank for 5min, wherein the phosphating tank is internally filled with phosphating solution of 40 ℃, and the phosphating solution comprises the following components in percentage by weight: the phosphating solution comprises the component H3PO410g/L，Zn(H2PO4)342g/L，Zn(NO3)265g/L，NaNO20.5g/L，Al2O30.05g/L, and Al2O3The grain diameter is less than or equal to 10 mu m.
In the step (2), the steel wire is processed on line at the routing speed of 20-27 m/min; the lead bath is to send the semi-finished steel wire into lead liquid at the temperature of 440-460 ℃; the galvanization is performed by passing through 445-455 ℃ zinc liquid.
In the step (3), the steel wire is processed on line at the routing speed of 20-27 m/min; the zinc-aluminum alloy liquid in the zinc-aluminum alloy pot is at the temperature of 450-460 ℃, and contains 12 percent of aluminum and 85 percent of zinc.
The invention also aims to provide a phosphating solution for phosphating treatment, which comprises the component H3PO410g/L，Zn(H2PO4)342g/L，Zn(NO3)265g/L，NaNO20.5g/L，Al2O30.05g/L, and Al2O3The grain diameter is less than or equal to 10 mu m.
The invention also aims to provide the application of the phosphating solution for phosphating treatment in the manufacturing process of the corrosion-resistant steel strand.
When in use, the wire rod is put into a phosphating tank for 5min, and phosphating solution at 40 ℃ is filled in the phosphating tank.
The fourth purpose of the invention is to provide the application of the phosphating solution for phosphating treatment in the manufacturing process of the corrosion-resistant steel strand by taking 77MnA steel wire rods as raw materials.
The invention creates other matters which do not refer to the prior art, such as: the manufacturing method of the zinc-aluminum alloy coating prestressed steel strand has the following technical contents disclosed in a patent No. 201510333390.9. The invention takes the prior art as a research basis, develops the improvement research of the prior art, and combines the improved phosphating solution independently developed by a company to be used for the production in the process, so that the comprehensive properties of corrosion resistance, strength, toughness and the like of the prepared steel strand are further improved; and the 77MnA steel wire rod is used as a raw material, so that the carbon content is higher, the content of alloy elements is increased, and the toughness of the steel wire is improved. The raw materials are combined, the process is introduced, the phosphating treatment process is optimized emphatically, the components of phosphating solution are improved, the phosphating treatment effect is improved, the drawing forming of the raw materials is facilitated, the requirements of the drawing process on the performance and the surface quality of the steel wire are met, the comprehensive performance of the galvanized and galvanized aluminum alloy layer steel wire is improved, and the comprehensive performance of the galvanized and galvanized aluminum alloy layer steel wire after the galvanized and galvanized aluminum alloy layer steel wire is twisted into a steel strand is improved.
In the research process, the prepared steel strand is subjected to strength measurement, salt spray corrosion test, saddle fatigue test and mechanical property test, and the result is as follows: the strength of the steel strand is about 2135MPa, the number of times of breakage in a saddle fatigue test is improved by about 10%, the relaxation rate is maintained between 1.2 and 1.3 percent, and the maximum force elongation reaches more than 5.1 percent; compared with the phosphating treatment by adopting pyrophosphate in the prior art, the salt spray corrosion resistance of the phosphate corrosion inhibitor is improved by about 0.32 times.
77MnA steel wire rod is taken as a raw material, and the component of phosphating solution is H3PO410g/L，Zn(H2PO4)342g/L，Zn(NO3)265g/L，NaNO20.5g/L，Al2O30.05g/L, and Al2O3The grain size is less than or equal to 10 mu m, and the process parameters and the related process steps are improved, so that the comprehensive performance of the steel strand is improved, the service life of the steel strand is prolonged, and the application cost of the steel strand is reduced.
Detailed Description
The technical solution of the present invention is further defined below with reference to the specific embodiments, but the scope of the claims is not limited to the description.
The 77MnA steel wire rod adopted in the invention is purchased in the market; all reagents are chemical pure reagents; al used2O3The product is purchased from Guizhou Bohui Lianrun aluminum industry Co., Ltd, and the product is prepared by the Guizhou Bohui Lianrun aluminum industry Co., Ltd by an electrolytic method; the adopted zinc-aluminum alloy is prepared by the company through direct die casting.
The production process is realized by referring to relevant process steps and process parameters disclosed in the manufacturing method of the zinc-aluminum alloy coating prestress steel strand with the patent number of 201510333390.9, and the inexhaustible matters and relevant parameters in the invention are realized by referring to the process parameters and the steps.
Examples
The manufacturing method of the corrosion-resistant steel strand comprises the following steps:
(1) selecting a 77MnA steel wire rod, carrying out acid washing and phosphating treatment on the wire rod, and carrying out multi-pass drawing on the wire rod by adopting a wire drawing machine to obtain a semi-finished steel wire;
(2) galvanizing the semi-finished steel wire, and galvanizing the semi-finished steel wire by carrying out lead bath, alkali washing, acid washing, water washing, drying and feeding the semi-finished steel wire into a pure zinc pot to galvanize to obtain a galvanized steel wire;
(3) feeding the galvanized steel wire into a zinc-aluminum alloy pot to obtain a galvanized aluminum alloy steel wire;
(4) carrying out fine drawing on the galvanized aluminum alloy steel wire by using a drawing machine to obtain a required outer layer wire;
(5) stranding the galvanized aluminum alloy steel wire in the step (3) and outer layer wires by taking the galvanized aluminum alloy steel wire as a central steel wire, wherein the lay length multiple is 12-16 times, and thus obtaining a primary finished product of the steel strand;
(6) pre-tensioning the steel strand by using 45% of the maximum force of the steel strand, and heating the steel strand to 370 ℃ to obtain the steel strand;
the phosphating treatment is to place the wire rod into a phosphating tank for 5min, wherein the phosphating tank is internally filled with phosphating solution of 40 ℃, and the phosphating solution comprises the following components in percentage by weight: the phosphating solution comprises the component H3PO410g/L，Zn(H2PO4)342g/L，Zn(NO3)265g/L，NaNO20.5g/L，Al2O30.05g/L, and Al2O3The grain diameter is less than or equal to 10 mu m.
In the step (2), the steel wire is processed on line at the routing speed of 20-27 m/min; the lead bath is to send the semi-finished steel wire into lead liquid at the temperature of 440-460 ℃; the galvanization is performed by passing through 445-455 ℃ zinc liquid.
In the step (3), the steel wire is processed on line at the routing speed of 20 m/min; the zinc-aluminum alloy liquid in the zinc-aluminum alloy pot is at the temperature of 450-460 ℃, and contains 12 percent of aluminum and 85 percent of zinc.
Other steps are performed with reference to the prior art, for example: washing with alkali in the step (2) by using a sodium hydroxide solution at the temperature of about 80 ℃, and the like; for another example: before entering a pure zinc pot, the pure zinc pot needs to enter an auxiliary plating tank, an ammonium chloride solution with the temperature of about 80 ℃ is adopted as an auxiliary plating preparation, the concentration of the ammonium chloride solution is 60g/L, the iron content is less than or equal to 80g/L, and then the pure zinc pot is dried and galvanized; for another example: when the zinc-aluminum alloy plating operation is carried out in the step (3), the zinc-aluminum alloy plating operation needs to be firstly carried out in an auxiliary plating tank, an ammonium chloride solution with the concentration of 120g/L and the like at about 80 ℃ is adopted as an auxiliary plating preparation.
And (3) testing:
1. the strength of the corrosion-resistant steel strand created by the invention is detected, and the average value is taken after 3 times of tests.
2. The steel strand prepared by the preparation method of embodiment 1 with the patent number of 201510333390.9 is used as a reference substance, the corrosion resistance time of the sample prepared by the embodiment of the invention and the reference substance is prolonged, and the average value is taken after 3 times of tests.
3. The relaxation rate, the straightening property and the maximum force elongation of the corrosion-resistant steel strand are detected, and the average value is obtained after 3 times of tests.
And (3) test results:
(1) the strength of the corrosion-resistant steel strand created by the invention is about 2135 MPa.
(2) The corrosion resistance time of the salt spray is prolonged by about 0.32 times compared with the prior art.
(3) The invention can obtain steel strand with relaxation rate of 1.2-1.3%, maximum force elongation of 5.12% and straightening property of 5.2 mm.
(4) The invention creates a condition that the steel strand is broken through a saddle fatigue test, and the number of times is 223.57 ten thousand.
And (3) analysis:
compared with the prior art documents, the invention adopts the phosphating solution component which is independently developed by the company in the preparation process for the phosphating solution component, the phosphating solution component is formed by adding a phosphating accelerator component into the phosphating solution to ensure that the phosphating solution component can promote low-temperature rapid phosphating and film forming in the phosphating process so as to adapt to the requirements of an online phosphating process, and when the wire rod is pulled at a certain linear speed and the like to be phosphated, the phosphating and film forming effect and efficiency on the surface of the wire rod are improved, the wire rod drawing performance is further improved, and the aim of improving the comprehensive performance of drawing the steel wire is fulfilled.
On the basis of the prior art, the process and related parameters researched by the prior art are fully utilized, the phosphating solution independently developed by the company is used for the adaptive process to prepare the steel strand product, so that the purpose of improving the comprehensive performance of the steel strand is expected, and through experimental research, the strength of the obtained steel strand is greatly improved by applying the phosphating solution in the process for producing the steel strand by taking 77MnA wire rods as raw materials, the strength is improved from 1950MPa in the prior art to more than 2100MPa, the maximum force elongation is improved, the toughness is improved, the comprehensive performance of the steel strand is improved, the quality of the steel strand is improved, the application life of the steel strand is prolonged, and the application cost of the steel strand is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The manufacturing method of the corrosion-resistant steel strand is characterized by comprising the following steps of:
(1) selecting a 77MnA steel wire rod, carrying out acid washing and phosphating treatment on the wire rod, and carrying out multi-pass drawing on the wire rod by adopting a wire drawing machine to obtain a semi-finished steel wire;
(2) galvanizing the semi-finished steel wire, and galvanizing the semi-finished steel wire by carrying out lead bath, alkali washing, acid washing, water washing, drying and feeding the semi-finished steel wire into a pure zinc pot to galvanize to obtain a galvanized steel wire;
(3) feeding the galvanized steel wire into a zinc-aluminum alloy pot to obtain a galvanized aluminum alloy steel wire;
(4) carrying out fine drawing on the galvanized aluminum alloy steel wire by using a drawing machine to obtain a required outer layer wire;
(5) stranding the galvanized aluminum alloy steel wire in the step (3) and outer layer wires by taking the galvanized aluminum alloy steel wire as a central steel wire, wherein the lay length multiple is 12-16 times, and thus obtaining a primary finished product of the steel strand;
(6) pre-tensioning the steel strand by 42-45% of the maximum force of the steel strand, and heating the steel strand to a temperature of between 360 DEG and 380 ℃;
the phosphating treatment is to put the wire rod into a phosphating pool for 5min, wherein the temperature in the phosphating pool is 40 DEG CA phosphating solution, wherein: the phosphating solution comprises the component H3PO410g/L，Zn(H2PO4)342g/L，Zn(NO3)265g/L，NaNO20.5g/L，Al2O30.05g/L, and Al2O3The grain diameter is less than or equal to 10 mu m.
2. The method for manufacturing a corrosion-resistant steel strand as claimed in claim 1, wherein the step (2) is performed at a running speed of 20-27m/min so that the steel wire is processed on line; the lead bath is to send the semi-finished steel wire into lead liquid at the temperature of 440-460 ℃; the galvanization is performed by passing through 445-455 ℃ zinc liquid.
3. The method for manufacturing a corrosion-resistant steel strand as claimed in claim 1, wherein the step (3) is performed at a running speed of 20-27m/min so that the steel wire is processed on line; the zinc-aluminum alloy liquid in the zinc-aluminum alloy pot is at the temperature of 450-460 ℃, and contains 12 percent of aluminum and 85 percent of zinc.
4. A phosphating solution for phosphating treatment is characterized in that the component of the phosphating solution is H3PO410g/L，Zn(H2PO4)342g/L，Zn(NO3)265g/L，NaNO20.5g/L，Al2O30.05g/L, and Al2O3The grain diameter is less than or equal to 10 mu m.
5. The use of the phosphating solution according to claim 4 in a process for manufacturing corrosion-resistant steel strands.
6. The use of claim 5, wherein, in the use, the wire rod is placed in a phosphating tank for 5min, and the phosphating solution is at 40 ℃ in the phosphating tank.
7. The use of the phosphating solution according to claim 4 in a process for manufacturing corrosion-resistant steel strands by using 77MnA steel wire rods as raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010504831.8A CN111778499A (en) | 2020-06-05 | 2020-06-05 | Method for manufacturing corrosion-resistant steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010504831.8A CN111778499A (en) | 2020-06-05 | 2020-06-05 | Method for manufacturing corrosion-resistant steel strand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111778499A true CN111778499A (en) | 2020-10-16 |
Family
ID=72753967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010504831.8A Pending CN111778499A (en) | 2020-06-05 | 2020-06-05 | Method for manufacturing corrosion-resistant steel strand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111778499A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528952A (en) * | 2003-09-27 | 2004-09-15 | 沈阳工业学院 | Neodymium-iron-boron magnet zinc plating and cathode electrophoresis composite protection process |
| CN1804119A (en) * | 2006-01-10 | 2006-07-19 | 大连理工大学 | Nanometer alumina composite phosphatized film and preparation method thereof |
| CN1986884A (en) * | 2006-11-29 | 2007-06-27 | 东南大学 | Low temperature fast phosphating solution for drawing wire and its phosphating process |
| CN104264141A (en) * | 2014-09-12 | 2015-01-07 | 西南石油大学 | Normal-temperature thick-film zinc phosphide phosphating solution and experimental method for determining component proportions |
| CN104451434A (en) * | 2014-11-07 | 2015-03-25 | 江苏天舜金属材料集团有限公司 | Strongly corrosion-resistant stranded galvanized steel wire and manufacturing method thereof |
| CN104975528A (en) * | 2015-06-16 | 2015-10-14 | 天津冶金钢线钢缆集团有限公司 | Manufacturing method of zinc-aluminum alloy clad layer prestress steel strands |
-
2020
- 2020-06-05 CN CN202010504831.8A patent/CN111778499A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1528952A (en) * | 2003-09-27 | 2004-09-15 | 沈阳工业学院 | Neodymium-iron-boron magnet zinc plating and cathode electrophoresis composite protection process |
| CN1804119A (en) * | 2006-01-10 | 2006-07-19 | 大连理工大学 | Nanometer alumina composite phosphatized film and preparation method thereof |
| CN1986884A (en) * | 2006-11-29 | 2007-06-27 | 东南大学 | Low temperature fast phosphating solution for drawing wire and its phosphating process |
| CN104264141A (en) * | 2014-09-12 | 2015-01-07 | 西南石油大学 | Normal-temperature thick-film zinc phosphide phosphating solution and experimental method for determining component proportions |
| CN104451434A (en) * | 2014-11-07 | 2015-03-25 | 江苏天舜金属材料集团有限公司 | Strongly corrosion-resistant stranded galvanized steel wire and manufacturing method thereof |
| CN104975528A (en) * | 2015-06-16 | 2015-10-14 | 天津冶金钢线钢缆集团有限公司 | Manufacturing method of zinc-aluminum alloy clad layer prestress steel strands |
Non-Patent Citations (1)
| Title |
|---|
| 方峰等: "金属拉丝用低温快速磷化处理工艺研究", 《东南大学学报(自然科学版)》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104975528B (en) | The preparation method of zinc aluminum alloy coating prestress wire | |
| CN102688906B (en) | Production process of extra-high strength steel stranded wire for long-span transmission wire | |
| CN110924202B (en) | Production method of 2160MPa high-strength galvanized steel strand for stay cable | |
| CN102517941A (en) | Production process of contact net anchorage steel wire rope | |
| CN104928956A (en) | Method for manufacturing highly corrosion-resistant steel wire rope for fishery | |
| LU101209B1 (en) | Metal wires, manufacturing methods therefor, and tires | |
| CN103952932B (en) | The bridge cable production method of HDPE galvanizing prestress wire | |
| CN109252125A (en) | A kind of hot galvanizing almag coating and its preparation method and application | |
| CN1109923A (en) | Surface-treated wire for use in composite elements of elastomeric material and manufacturing process | |
| CN114059369A (en) | High-performance steel wire rope core and manufacturing method thereof | |
| CN105598190B (en) | Galvanized steel wire production technology | |
| CN111778499A (en) | Method for manufacturing corrosion-resistant steel strand | |
| CN114457602A (en) | Method for manufacturing galvanized steel wire rope for high-altitude operation hanging basket | |
| GB2092921A (en) | A device for use in the manufacture of wires for reinforcing rubber articles | |
| CN113403869A (en) | Manufacturing process of wear-resistant and corrosion-resistant coating of steel wire rope | |
| CN110799700A (en) | Steel cord for reinforcing rubber article and method for producing same | |
| CN1012829B (en) | Improvement to metal wires used for reinforcing elastomeric material | |
| CN205347993U (en) | Corrosion -resistant cable of compound protection layer for cable -stay bridge | |
| JP4937846B2 (en) | Steel wire for reinforcing rubber products excellent in corrosion fatigue resistance and manufacturing method thereof | |
| CN104451505B (en) | Brass-plating process of pearlite steel wires | |
| JP6408281B2 (en) | Manufacturing method of steel wire for reinforcing rubber articles | |
| CN204780425U (en) | Anchor line for offshore oil drilling platform | |
| CN117102389B (en) | Production process of high-strength steel strand for cable | |
| CN109944104A (en) | A kind of manipulation wirerope and preparation method thereof | |
| CN117649979B (en) | Production process of steel-cored aluminum strand and steel-cored aluminum strand |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201016 |
|
| RJ01 | Rejection of invention patent application after publication |