CN112647020A - Weather-resistant steel tower and preparation method thereof - Google Patents
Weather-resistant steel tower and preparation method thereof Download PDFInfo
- Publication number
- CN112647020A CN112647020A CN202011439802.4A CN202011439802A CN112647020A CN 112647020 A CN112647020 A CN 112647020A CN 202011439802 A CN202011439802 A CN 202011439802A CN 112647020 A CN112647020 A CN 112647020A
- Authority
- CN
- China
- Prior art keywords
- percent
- steel
- equal
- less
- weathering steel
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/116—Refining the metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a weather-resistant steel tower which comprises the following components in parts by mass: less than or equal to 0.16 percent, Si: less than or equal to 0.65 percent, Mn: less than or equal to 1.5 percent, P: less than or equal to 0.020%, S: less than or equal to 0.010 percent, Cu: 0.25-0.55%, Cr: 0.30-1.25%, Ni: less than or equal to 0.65 percent, Sb: not more than 0.2 percent, and Ti, V, Nb and Alt alloy, wherein the total amount of the Ti, V, Nb and Alt alloy is not more than 0.22 percent, and the balance of Fe and inevitable impurities. The weather-resistant steel section is obtained by feeding refined materials into a furnace, smelting, refining, continuous casting, rolling and cooling, and the section is spliced or welded after being formed by drilling to form the iron tower. The invention realizes that the thickness of the self-protection oxide layer of the weathering steel reaches 0.5mm, and the weathering steel can be used in complex climate environment of Guizhou, optimizes the process flow for the process research of the weathering steel preparation iron tower, saves the weathering steel material and the production cost, and improves the production efficiency.
Description
Technical Field
The invention belongs to the technical field of power transmission and transformation engineering, and particularly relates to a weather-resistant steel iron tower and a preparation method thereof.
Background
For a long time, the steel materials for the transmission towers of the power grid infrastructure in China mainly adopt hot-rolled angle steel profiles of carbon structural steel and low-alloy high-strength structural steel, and mainly rely on acid pickling and hot galvanizing corrosion prevention processes to improve the corrosion resistance of the steel towers. Due to the limitation of the hot galvanizing process of the steel for the current structure, the problem of environmental pollution caused in the production process is difficult to be effectively solved, and in recent years, due to the strict limitation of environmental protection policy, a large number of hot galvanizing production enterprises are shut down, and the production cost of hot galvanizing iron towers is also increased. The development of a novel anticorrosion technology for replacing hot galvanizing has become one of the urgent requirements for the production of steel members in power transmission and transformation engineering.
The weathering steel is one of main technical development directions for realizing coating-free corrosion prevention of steel components serving in atmospheric environment. The weathering steel is applied to the transmission tower, so that the hot galvanizing production process with serious pollution emission can be removed, the manufacturing cost of the tower can be reduced, the hot galvanizing production requirement brought by the manufacturing of the tower can be reduced, the green power grid construction and the environmental protection of China can be facilitated, and the social benefit and the economic benefit are good.
Chinese patent with publication number CN 111020365A discloses a weathering steel, a manufacturing method of a steel plate thereof and a manufacturing method of angle steel, wherein the weathering steel comprises the following components in parts by mass: c: 0.05-0.20%, Si: 0.20-0.40%, Mn: 0.80-1.6%, Cu: 0.50-0.80%, Cr: 0.05 to 0.85%, Nb: 0.01-0.1%, Ni: 0.15-0.70%, Ti: less than or equal to 0.12 percent, Mo: less than or equal to 0.30 percent, V: less than or equal to 0.12 percent, Zr: less than or equal to 0.15 percent, P: less than or equal to 0.03%, S: less than or equal to 0.006 percent, Al: 0.01-0.05%, N: 0.002-0.005 percent, less than or equal to 0.002 percent of O, and the balance of inevitable Fe and impurities. The technical scheme provided by the invention can still meet the mechanical requirements of iron tower application after thinning treatment, and the cost of raw materials is reduced.
However, at present, the weathering steel is applied to the transmission tower, main test points are located in mansion doors and Anhui Bozhou, and researchers at home and abroad do not research and apply the weathering steel tower to the transmission tower in Guizhou power grid and south grid areas. The climate conditions of high altitude and high humidity in Guizhou combines the conditions of serious pollution in chemical areas, serious tail gas emission near traffic main roads and the like, increases the complexity of the corrosion mechanism of the iron tower, and also puts higher requirements on the performance of the weathering resistant steel. Therefore, in the whole life cycle of the weathering steel power transmission iron tower, aiming at different climate combination conditions and pollutant sources, the range of controlling the thickness of the self-protection oxide layer formed by the weathering steel is most beneficial to the power transmission iron tower, and how the connection structure plays a role in the process of preparing the iron tower by the weathering steel is the key point of research.
Disclosure of Invention
The invention aims to provide a weather-resistant steel tower and a preparation method thereof aiming at complex climate and special natural environment of Guizhou region, which can reduce corrosion rate of the iron tower to the maximum extent, improve service life of the iron tower, accurately control manufacturing process parameters of the iron tower, optimize process and reduce product processing cost by controlling chemical components of the weather-resistant steel to increase the thickness of a self-protecting oxide layer.
The technical scheme adopted by the invention is as follows: a weathering steel tower comprises the following components in parts by mass:
c: less than or equal to 0.16 percent, Si: less than or equal to 0.65 percent, Mn: less than or equal to 1.5 percent, P: less than or equal to 0.020%, S: less than or equal to 0.010 percent, Cu: 0.25-0.55%, Cr: 0.30-1.25%, Ni: less than or equal to 0.65 percent, Sb: not more than 0.2 percent, and Ti, V, Nb and Alt alloy, wherein the total amount of the Ti, V, Nb and Alt alloy is not more than 0.22 percent, and the balance of Fe and inevitable impurities.
As a preferred scheme of the invention, the weather-resistant steel comprises the following components in percentage by mass: c: 0.10-0.16%, Si: 0.35-0.65%, Mn: 1.1-1.5%, P: 0.01-0.020%, S: 0.006-0.010%, Cu: 0.30-0.55%, Cr: 0.80-1.25%, Ni: 0.40-0.65%, Sb: 0.12-0.2%, and Ti, V, Nb and Alt alloys, the total amount of Ti, V, Nb and Alt alloys not exceeding 0.22%, the balance being Fe and unavoidable impurities.
As a preferred scheme of the invention, the weather-resistant steel comprises the following components in percentage by mass: c: 0.12%, Si: 0.36%, Mn: 1.1%, P: 0.015%, S: 0.008%, Cu: 0.40%, Cr: 1.15%, Ni: 0.45%, Sb: 0.15%, Ti: 0.05%, V: 0.04%, Nb: 0.08%, Alt: 0.04% and the balance of Fe and inevitable impurities.
A preparation method of a weather-resistant steel tower comprises the following steps:
s1: the method comprises the following steps of (1) feeding refined materials of pretreated molten steel into a furnace, smelting the molten steel through a converter or an electric furnace, then carrying out external refining, continuous casting, rolling and cooling to prepare weather-resistant steel sections;
s2: carrying out sample-removing drilling forming or ring-making forming on the section bar in the step 1;
s3: trial assembly and inspection are carried out on the product obtained in the step S2, repair welding, splash removal or direct straightening and leveling are carried out on the inspected product, and then acid pickling is carried out;
s4: the welding process comprises the following steps of S2, splicing partial products formed by drilling in the step, performing integral tack welding on a welding tire, performing integral connection welding after the welding tire is inspected to be qualified, then performing inspection straightening and leveling, and performing acid pickling;
s5: and (4) carrying out surface treatment on the pickled product, and connecting and inspecting after inspection and correction.
Further, a deoxidizer with the mass of 1.5-3.5% of the molten steel is added after the steel is smelted and tapped in the step S1, and rare earth wires with the mass of 0.02-0.03% of the molten steel are fed in during continuous casting.
Further, the section bars in the step S1 and the step S2 include a plate, an angle steel, a channel steel, a steel pipe and an H steel, wherein the plate is subjected to blanking by a plate shearing machine to be subjected to drilling forming or looping forming, and other section bars are subjected to drilling forming after sample cutting.
Further, the surface roughness of the wall of the drilled hole formed by drilling in the step S2 is not more than 6.4 μm, and the edge of the drilled hole has no crack, no side prick and no edge defect larger than 1.0 mm.
Further, carbon dioxide arc welding is adopted during welding in the step S4, when the thickness of the metal is less than or equal to 10mm, the meat biting depth is not greater than 0.5mm, and when the thickness of the metal is 10mm, the meat biting depth is not greater than 1.0 mm.
Further, in the step S5, the surface treatment is performed by using an epoxy group penetrant + a thick paste type epoxy emulsion paint or a calcium sulfonate oil penetrant + a calcium sulfonate wax coating treatment or a paint spraying treatment.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention controls the forming thickness and the oxidation rate of an oxide film by changing the contents of trace elements such as phosphorus, copper, chromium, nickel and the like in the weathering steel, forms a compact protective film layer by using nickel and copper through high silicon and carbon as well as corrosion-resistant metals such as chromium, copper and nickel and trace elements such as titanium and niobium, and promotes the formation of the protective oxide layer by using the nickel and copper as a catalyst, finally realizes that the thickness of the self-protective oxide layer of the weathering steel reaches 0.5mm by using the contents of the components of the weathering steel in the technical scheme of the invention, the annual corrosion rate is 0.0125mm, the weathering steel can meet the use in complex climate environments of Guizhou, and the service life of an iron tower reaches 40 years;
2) according to the invention, on the basis of the conventional technology, antimony is adopted to react with chromium to generate alloy so as to enhance the hardness and mechanical strength of the weathering steel, and meanwhile, the alloy is cooperated with Ni and Cu to increase the solid solution strengthening effect, so that the weathering resistance of the steel plate is improved;
3) the weathering steel produced by the invention has the maximum thickness of 40mm, the yield strength of more than 420MPa, the tensile strength of more than 520MPa and the corrosion resistance obviously superior to that of common steel;
4) the invention optimizes the process flow for the process research of preparing the iron tower by the weather-resistant steel, further strictly drills and welds the connection process, saves the weather-resistant steel material and the production cost, and improves the production efficiency.
Drawings
FIG. 1 is a flow chart of the preparation of a weathering steel iron tower of the present invention.
Detailed Description
The invention will be explained and illustrated below with reference to examples in order to facilitate a better understanding of the person skilled in the art.
This example provides two weathering steels, example 1 (steel grade 420MPa) and example 2 (steel grade 345MPa), respectively, containing Fe and other unavoidable impurities, with the remaining chemical composition as follows:
TABLE 1 chemical composition TABLE (wt%) of inventive examples
The mechanical properties of the two weathering steels of this example were measured and the results are shown in table 2:
TABLE 2 mechanical property test results of two weathering resistant steels of this example
Note: tensile test using transverse specimen
D is the bend diameter and a is the thickness of the steel plate.
The experimental results show that the weathering steel prepared by the invention has better tensile, bending and impact mechanical properties, and can meet the use requirements of angle steel of a power transmission tower.
The weathering steel of examples 1 and 2 according to the invention, having oxide layers of 0.5mm and 0.485mm in thickness, were tested for corrosion and compared with the steel of comparative example 1. The experimental conditions were:
TABLE 3 test results of the 72h cycle immersion corrosion test of the inventive example
| Example 1 | Example 2 | Comparative example 1 | |
| NaHSO3 | 44.3 | 48.2 | 100 |
| H2SO4 | 3.9 | 6.2 | 100 |
The experimental results show that the weathering steel obtained by the invention has far lower corrosion rate than common steel, and excellent corrosion resistance, wherein the corrosion resistance of the embodiment 1 is better than that of the embodiment 2.
Referring to fig. 1, the present invention further provides a method for manufacturing a weathering steel iron tower, including the following steps:
s1: the method comprises the steps of pretreating molten steel, feeding the pretreated molten steel into a furnace, adding a deoxidizer accounting for 2% of the mass of the molten steel and Ti, V, Nb and Alt alloy after smelting and tapping, performing external refining and continuous casting after smelting through a converter or an electric furnace, feeding rare earth wires accounting for 0.02% of the mass of the molten steel during continuous casting, and then rolling and cooling to prepare weather-resistant steel profiles, wherein the obtained weather-resistant steel profiles comprise plates, angle steel, channel steel, steel pipes and H steel;
s2: performing sample unloading, drilling and forming or ring forming on the section bar in the step 1, wherein a plate is subjected to sample unloading, drilling and forming or ring forming through a plate shearing machine, other section bars are subjected to sample unloading and drilling and forming, the surface roughness of the hole wall of the drilled hole is not more than 6.4 mu m, and the edge of the hole has no crack, no side prick and no edge defect larger than 1.0 mm;
s3: trial assembly and inspection are carried out on the product obtained in the step S2, repair welding and splashing removal or direct straightening and leveling are carried out on the inspected product, then acid cleaning is carried out, the section is immersed into a hydrochloric acid solution with the mass percentage of 20% at normal temperature for 5min, and the section is taken out and washed by clean water;
s4: the welding process comprises the steps of S2, splicing partial products formed by drilling in the step, performing integral tack welding on a welding base, performing integral connection welding after the products are qualified, then performing inspection straightening, leveling and acid cleaning, wherein carbon dioxide arc welding is adopted during welding, when the thickness of metal is less than or equal to 10mm, the biting depth is not more than 0.5mm, and when the thickness of metal is 10mm, the biting depth is not more than 1.0 mm;
s5: and (3) carrying out surface treatment on the pickled product, connecting after inspection and correction, and inspecting, wherein the surface treatment mode is specifically that a calcium sulfonate oil penetrant and a calcium sulfonate wax coating are adopted for treatment.
Claims (9)
1. The weather-resistant steel tower is characterized by comprising the following components in parts by mass:
c: less than or equal to 0.16 percent, Si: less than or equal to 0.65 percent, Mn: less than or equal to 1.5 percent, P: less than or equal to 0.020%, S: less than or equal to 0.010 percent, Cu: 0.25-0.55%, Cr: 0.30-1.25%, Ni: less than or equal to 0.65 percent, Sb: not more than 0.2 percent, and Ti, V, Nb and Alt alloy, wherein the total amount of the Ti, V, Nb and Alt alloy is not more than 0.22 percent, and the balance of Fe and inevitable impurities.
2. The weathering steel tower of claim 1, wherein the weathering steel comprises the following components in mass fraction: c: 0.10-0.16%, Si: 0.35-0.65%, Mn: 1.1-1.5%, P: 0.01-0.020%, S: 0.006-0.010%, Cu: 0.30-0.55%, Cr: 0.80-1.25%, Ni: 0.40-0.65%, Sb: 0.12-0.2%, and Ti, V, Nb and Alt alloys, the total amount of Ti, V, Nb and Alt alloys not exceeding 0.22%, the balance being Fe and unavoidable impurities.
3. The weathering steel tower of claim 1, wherein the weathering steel comprises the following components in mass fraction: c: 0.12%, Si: 0.36%, Mn: 1.1%, P: 0.015%, S: 0.008%, Cu: 0.40%, Cr: 1.15%, Ni: 0.45%, Sb: 0.15%, Ti: 0.05%, V: 0.04%, Nb: 0.08%, Alt: 0.04% and the balance of Fe and inevitable impurities.
4. The method for preparing the weathering steel tower according to any one of claims 1 to 3, characterized by comprising the following steps:
s1: the method comprises the following steps of (1) feeding refined materials of pretreated molten steel into a furnace, smelting the molten steel through a converter or an electric furnace, then carrying out external refining, continuous casting, rolling and cooling to prepare weather-resistant steel sections;
s2: carrying out sample-removing drilling forming or ring-making forming on the section bar in the step 1;
s3: trial assembly and inspection are carried out on the product obtained in the step S2, repair welding, splash removal or direct straightening and leveling are carried out on the inspected product, and then acid pickling is carried out;
s4: the welding process comprises the following steps of S2, splicing partial products formed by drilling in the step, performing integral tack welding on a welding tire, performing integral connection welding after the welding tire is inspected to be qualified, then performing inspection straightening and leveling, and performing acid pickling;
s5: and (4) carrying out surface treatment on the pickled product, and connecting and inspecting after inspection and correction.
5. The method for preparing the weathering steel tower according to claim 4, characterized in that: and step S1, adding a deoxidizer accounting for 1.5 to 3.5 percent of the mass of the molten steel after smelting and tapping, and feeding rare earth wires accounting for 0.02 to 0.03 percent of the mass of the molten steel during continuous casting.
6. The method for preparing the weathering steel tower according to claim 4, characterized in that: the section bars in the step S1 and the step S2 comprise a plate, angle steel, channel steel, a steel pipe and H steel, wherein the plate is blanked by a plate shearing machine to be drilled and formed or looped, and other section bars are drilled and formed after sample cutting.
7. The method for preparing the weathering steel tower according to claim 4, characterized in that: the surface roughness of the wall of the drilled hole formed by drilling in the step S2 is not more than 6.4 mu m, and the edge of the drilled hole has no crack, no side prick and no edge defect larger than 1.0 mm.
8. The method for preparing the weathering steel tower according to claim 4, characterized in that: and in the step S4, carbon dioxide arc welding is adopted during welding, when the thickness of the metal is less than or equal to 10mm, the meat biting depth is not greater than 0.5mm, and when the thickness of the metal is 10mm, the meat biting depth is not greater than 1.0 mm.
9. The method for preparing the weathering steel tower according to claim 4, characterized in that: and step S5, the surface treatment adopts epoxy group penetrant + thick paste type epoxy emulsion paint or calcium sulfonate oil penetrant + calcium sulfonate wax coating treatment or paint spraying treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439802.4A CN112647020A (en) | 2020-12-11 | 2020-12-11 | Weather-resistant steel tower and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439802.4A CN112647020A (en) | 2020-12-11 | 2020-12-11 | Weather-resistant steel tower and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112647020A true CN112647020A (en) | 2021-04-13 |
Family
ID=75350854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011439802.4A Pending CN112647020A (en) | 2020-12-11 | 2020-12-11 | Weather-resistant steel tower and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112647020A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846895A (en) * | 2021-10-15 | 2021-12-28 | 峻江建设有限公司 | High-strength iron tower main rod and preparation method thereof |
| CN113846894A (en) * | 2021-09-30 | 2021-12-28 | 峻江建设有限公司 | Preparation method of extra-high voltage safety transmission tower |
| CN116288307A (en) * | 2022-11-30 | 2023-06-23 | 贵州电网有限责任公司 | Method for improving corrosion resistance of galvanized bolt for weathering steel profile |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004107714A (en) * | 2002-09-17 | 2004-04-08 | Jfe Steel Kk | High toughness and high yield point steel with excellent weldability and its producing method |
| JP2009179882A (en) * | 2009-05-11 | 2009-08-13 | Sumitomo Metal Ind Ltd | Steel having excellent seaside weather resistance and structure |
| EP2400041A1 (en) * | 2009-05-21 | 2011-12-28 | Nippon Steel Corporation | Steel material for welding and method for producing same |
| CN102606810A (en) * | 2012-03-21 | 2012-07-25 | 苏州贝思特金属制品有限公司 | Manufacture method of low carbon nickel chrome molybdenum niobium alloy stainless steel seamless steel tube |
| CN106011658A (en) * | 2016-07-11 | 2016-10-12 | 武汉钢铁股份有限公司 | Marine climate-resistant and corrosion-resistant steel and production method thereof |
| CN107502835A (en) * | 2017-08-17 | 2017-12-22 | 北京国网富达科技发展有限责任公司 | A kind of weather-proof angle steel of steel tower high-strength and high ductility and preparation method thereof |
| CN107849664A (en) * | 2015-09-11 | 2018-03-27 | 杰富意钢铁株式会社 | The excellent structural steel of weatherability |
| CN110159053A (en) * | 2019-06-25 | 2019-08-23 | 中电建成都铁塔有限公司 | A kind of power transmission line polygon rod structure and its manufacture craft |
| CN110551947A (en) * | 2019-10-21 | 2019-12-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Weather-resistant steel and preparation method thereof |
| CN111020365A (en) * | 2018-10-09 | 2020-04-17 | 中国电力科学研究院有限公司 | Weather-resistant steel, steel plate manufacturing method thereof and angle steel manufacturing method |
-
2020
- 2020-12-11 CN CN202011439802.4A patent/CN112647020A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004107714A (en) * | 2002-09-17 | 2004-04-08 | Jfe Steel Kk | High toughness and high yield point steel with excellent weldability and its producing method |
| JP2009179882A (en) * | 2009-05-11 | 2009-08-13 | Sumitomo Metal Ind Ltd | Steel having excellent seaside weather resistance and structure |
| EP2400041A1 (en) * | 2009-05-21 | 2011-12-28 | Nippon Steel Corporation | Steel material for welding and method for producing same |
| CN102606810A (en) * | 2012-03-21 | 2012-07-25 | 苏州贝思特金属制品有限公司 | Manufacture method of low carbon nickel chrome molybdenum niobium alloy stainless steel seamless steel tube |
| CN107849664A (en) * | 2015-09-11 | 2018-03-27 | 杰富意钢铁株式会社 | The excellent structural steel of weatherability |
| CN106011658A (en) * | 2016-07-11 | 2016-10-12 | 武汉钢铁股份有限公司 | Marine climate-resistant and corrosion-resistant steel and production method thereof |
| CN107502835A (en) * | 2017-08-17 | 2017-12-22 | 北京国网富达科技发展有限责任公司 | A kind of weather-proof angle steel of steel tower high-strength and high ductility and preparation method thereof |
| CN111020365A (en) * | 2018-10-09 | 2020-04-17 | 中国电力科学研究院有限公司 | Weather-resistant steel, steel plate manufacturing method thereof and angle steel manufacturing method |
| CN110159053A (en) * | 2019-06-25 | 2019-08-23 | 中电建成都铁塔有限公司 | A kind of power transmission line polygon rod structure and its manufacture craft |
| CN110551947A (en) * | 2019-10-21 | 2019-12-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Weather-resistant steel and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局: "《耐候结构钢》", 31 January 2009, 质检出版社 * |
| 中铁电气化局集团电气化公司器材厂: "《钢结构件加工工艺规范》", 21 March 2020 * |
| 高宇波 等: "改善含铜、锑耐候钢表面质量的生产实践", 《现代冶金》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846894A (en) * | 2021-09-30 | 2021-12-28 | 峻江建设有限公司 | Preparation method of extra-high voltage safety transmission tower |
| CN113846895A (en) * | 2021-10-15 | 2021-12-28 | 峻江建设有限公司 | High-strength iron tower main rod and preparation method thereof |
| CN116288307A (en) * | 2022-11-30 | 2023-06-23 | 贵州电网有限责任公司 | Method for improving corrosion resistance of galvanized bolt for weathering steel profile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112647020A (en) | Weather-resistant steel tower and preparation method thereof | |
| CN109082594B (en) | Acid soil corrosion resistant steel for buried structure and manufacturing method thereof | |
| CN112159921B (en) | Hot-rolled low-yield-ratio high-strength acid corrosion resistant steel plate and production method thereof | |
| CN108796391B (en) | Glass-lined steel with excellent plasticity and toughness and fish scaling resistance and manufacturing method thereof | |
| JP4924774B2 (en) | Steel material having excellent fatigue crack growth resistance and corrosion resistance and method for producing the same | |
| CN102189352B (en) | P92 steel submerged arc welding wire | |
| CN111321347A (en) | High-toughness acid-resistant steel for gas pipeline and manufacturing method thereof | |
| CN107747045A (en) | A kind of 400MPa levels environmental corrosion of resistance to Cl reinforcing bar and its manufacture method | |
| CN1281906A (en) | High-strength, high-toughness and corrosion resistant mooring chain steel and its production process | |
| CN107502835A (en) | A kind of weather-proof angle steel of steel tower high-strength and high ductility and preparation method thereof | |
| CN114921711A (en) | Production method of Q620-level high-corrosion-resistance high-strength offshore structure steel | |
| CN114892090A (en) | Production method of Q550-grade high-corrosion-resistance high-strength offshore structure steel | |
| CN111394649A (en) | Steel for corrosion-resistant steel bar for tropical marine atmospheric environment concrete structure and production method thereof | |
| CN113564481A (en) | Low-cost sulfate acid dew point corrosion resistant steel plate and manufacturing method thereof | |
| CN112176257A (en) | Niobium-titanium microalloyed acid-medium corrosion-resistant steel plate with yield strength of 600MPa and production method thereof | |
| JP5732741B2 (en) | Sn-Zn plated high-strength steel sheet for press working with excellent corrosion resistance and method for producing the same | |
| CN111172463A (en) | Acid corrosion resistant BGNS440 steel hot-rolled coil and preparation method thereof | |
| CN111304543A (en) | Low-temperature-resistant hot-dip galvanized steel plate with excellent welding performance and production method thereof | |
| CN114807785A (en) | 390 MPa-grade corrosion-resistant steel plate and production method thereof | |
| CN114763591A (en) | Corrosion-resistant steel resistant to salt and acid corrosion and manufacturing method thereof | |
| CN110625290A (en) | Gas shielded stranded welding wire and preparation method thereof | |
| CN111893238A (en) | Production process of corrosion-resistant steel bar | |
| CN111041359A (en) | Economical hot-dip galvanized steel plate with excellent surface quality for photovoltaic bracket and production method thereof | |
| CN115522137B (en) | Ocean atmospheric corrosion resistant steel and manufacturing method thereof | |
| CN110788457A (en) | Submerged arc welding wire and deposited metal thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |