CN106811678B - A kind of quenching alloy galvanized steel plate and its manufacturing method - Google Patents

A kind of quenching alloy galvanized steel plate and its manufacturing method Download PDF

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CN106811678B
CN106811678B CN201510870757.0A CN201510870757A CN106811678B CN 106811678 B CN106811678 B CN 106811678B CN 201510870757 A CN201510870757 A CN 201510870757A CN 106811678 B CN106811678 B CN 106811678B
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steel plate
heating
temperature
quenching
manufacturing
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CN106811678A (en
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吕家舜
李锋
杨洪刚
周芳
冯士杰
肖宇
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Angang Steel Co Ltd
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

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  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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  • Heat Treatment Of Sheet Steel (AREA)

Abstract

A kind of quenching alloy galvanized steel plate of present invention offer and its manufacturing method, the matrix composition of the steel plate are as follows by weight percentage：C 0.08%~0.65%, Si 0.01%~2.0%, Mn0.80~3.00%, P≤0.020%, S≤0.020%, Al 0.02%~1.00% contains Cr0.50%~1.50%, Mo 0.15%~1.50%, Ni 0.50%~2.00%, at least one of Cu 0.20%~0.80%, B 0.001%~0.005%, remaining is Fe and inevitable impurity element；The coating of the steel plate is iron-kirsite.Manufacturing method：Steel plate carries out recrystallization annealing+galvanizing+zinc layers Alloying Treatment after smelting-continuous casting-hot rolling-pickling-cold rolling in Continuous Hot Dip Galvanizing Line.There is excellent punch forming performance using alloy galvanized steel plate produced by the invention, while there is good quenching property after being molded, obtain the part that intensity reaches 1000MPa or more, and effectively save energy resources.

Description

A kind of quenching alloy galvanized steel plate and its manufacturing method
Technical field
The invention belongs to galvanized sheet manufacturing field more particularly to a kind of alloying galvanizing plates and its producer of suitable quenching Method.
Background technology
With the continuous improvement that energy-saving and environmental protection require, more stringent requirements are proposed for steel material for vehicle appliance industry, Steel material constantly develops towards the direction of high intensity, long-life, intensity, the raising in service life can energy saving, resource, realize Economic sustainable development.The raising of intensity is mainly realized by phase transformation strengthening, such as martensite steel, dual phase steel, the longevity The raising of life is mainly anti-corrosion, is realized by sealer, it can be common that and it is zinc-plated, alloying galvanizing plate is developed to later, Substantially increase the Corrosion Protection of steel plate.
But the raising of steel material intensity brings the decline of toughness and punch forming performance, to solve this contradiction, hair Hot extrusion briquetting technique is illustrated, i.e., steel plate is heated to austenitic area, using steel plate good processability at high temperature complete at Type and quenching obtain the very high part of intensity.
Although hot extrusion briquetting technique solves the contradiction between intensity and processability, but its of high cost, surface quality Poor, complex process is not suitable for promoting on a large scale.
For the present invention using the composition design of innovation, alloy galvanized steel plate product has good processability and excellent Impewdance matching performance, finished product impewdance matching have very high intensity later.
Invention content
It is an object of the invention to overcome the above problem and deficiency and provide a kind of quenching alloy for hot-dip galvanized sheet and Its manufacturing method, which can be realized by subsequent heating quenching strengthens, and to realize reduction materials'use amount, saves energy Source, resource, the purpose of less greenhouse gas emission.
The object of the present invention is achieved like this：
A kind of quenching alloy galvanized steel plate, the matrix composition of the steel plate are as follows by weight percentage：C 0.08%~ 0.65%, Si 0.01%~2.0%, Mn 0.80%~3.00%, P≤0.020%, S≤0.020%, Al 0.02%~ 1.00%, containing Cr 0.50%~1.50%, Mo0.15%~1.50%, Ni 0.50%~2.00%, Cu 0.20%~ At least one of 0.80%, B 0.001%~0.005%, remaining is Fe and inevitable impurity element；The plating of the steel plate Layer is iron-kirsite.
The matrix composition of the steel plate also contain V 0.10%~0.50%, Ti 0.02%~0.20%, Nb 0.02%~ At least one of 0.20%, Ca 0.0005%~0.002%, Mg 0.0005%~0.002%.
The matrix of steel plate is 50%~100%+ of Martensite Volume Fraction ferrite volume fractions 0%~50%.
The matrix composition design reason of steel plate of the present invention is as follows：
C 0.08%~0.65%, carbon not based on solution strengthening, but influence all phase transformation in the steel of the present invention Journey, and control final microstructure and mechanical property.Requirement of the different structural transformations for carbon content is widely different, is such as guarantee There is larger ferritic transformation area, it need to be controlled in lower content；To ensure being smoothed out for martensite transfor mation, need certain Carbon content；To ensure the stability of overcooling austenite, it is needed to have higher carbon content；To ensure welding performance, it is desirable that limitation Carbon content.
Si 0.01%~2.00% is non-carbide former, have higher solid solution strengthening effect, can promote C to Austenite is enriched with, and has " removing " and " purification " effect to the C being dissolved in ferrite, Si does not dissolve in cementite, therefore can hinder The austenite reacted by carbon spread-cementite transformation, stable austenite so that retained austenite is stabilized deposits at room temperature ?.In addition, Si can inhibit the precipitation of carbide between martensite lath, to be conducive to there is remaining Austria between acquisition martensite lath The tissue of family name's body.
Mn 0.80~3.00%, manganese are typical austenite stabilizer elements, and the quenching degree of steel can be improved, and play one Fixed solution strengthening effect, Mn can reduce A3, A1 critical point, can postpone perlitic transformation simultaneously as the element for expanding γ phase regions Bainite transformation temperature is reduced, but also postpones and extend ferritic transformation simultaneously, Bainite Region is made to move to right, to make steel grade to control The sensibility of cold process conditions slightly reduces.High Mn contents easily cause hardening constituent zonal distribution in duplex structure, to make At the uneven of performance.
The fewer P≤0.020%, the impurity in steel the better.
The fewer S≤0.020%, the impurity element in steel the better.
Al 0.02%~1.00%, the influence to Austenite Morphology are similar to Si, and form member as non-carbide Element promotes C to be enriched with to austenite and inhibit the precipitation of cementite.Al can also form AlN precipitations, play certain crystal grain thinning and make With.
Cr0.5-1.5% can effectively improve the quenching degree of steel and prevent high temperature surface oxidation.
Mo0.15-1.50%Mo effectively improves the quenching degree of steel, additionally it is possible to strengthen crystal boundary.Content is difficult to less than 0.15% It functions as described above, but then above-mentioned function and effect are saturated too high levels, and cost is higher.
Ni0.5-2.0%Ni is austenitizing stable element, can effectively reduce Ms points, while can improve material plasticity And low-temperature flexibility, but Ni prices are high.
Cu0.20-0.80% realizes precipitation strength by the way that ε-Cu are precipitated, and improves the intensity of steel.
B0.001-0.005 can significantly improve the quenching degree and purification crystal boundary of steel.Make more than when content is less than 0.001% With unobvious, effect increase unobvious when being higher than 0.0050%.Therefore, as added, B content should be controlled in 0.001- 0.0050wt% ranges
V0.10-0.50%, Ti0.02-0.20%, Nb0.02-0.20%, in crystal grain refinement, transformation behavior, austenite C enrichments play remarkable effect.Static and dynamic recrystallization and austenite are plain to iron in the Nb delay thermal deformation process of solid solution condition The phase transformation of body, to expand the temperature range between dynamic recrystallization final temperature and Ac3, to be provided in Unhydrated cement rolling Facility.Nb is combined with C and N to be formed tiny carbonitride also and can postpone to recrystallize, and prevents ferrite crystal grain from growing up, to have There are strong refined crystalline strengthening effect and stronger precipitating reinforcing effect.Ti, V have the function of precipitation strength.
Ca0.0005-0.002%, Mg0.0005-0.002%, can purify steel, and modified field trash improves the comprehensive of steel Close mechanical property.
A kind of manufacturing method of quenching alloy galvanized steel plate, steel plate pass through smelting-continuous casting-hot rolling-pickling-cold rolling Afterwards, recrystallization annealing+galvanizing+zinc layers Alloying Treatment is carried out in Continuous Hot Dip Galvanizing Line, hot rolling finishing temperature is more than It 880 DEG C, can be rolled to avoid two-phase section, 550 DEG C~680 DEG C of coiling temperature can refine the tissue of hot rolled steel plate, avoid simultaneously Influence of the high-temperature oxydation for plate surface quality.Galvanizing heating temperature is in austenitizing temperature hereinafter, avoiding difficult to understand because generating Family name's body and occur the hardening constituents such as martensite, bainite in subsequent cooling procedure.Cold-rolled compression ratio is more than 40%, and galvanizing adds The control of hot temperature hereinafter, the zinc layers alloying after galvanizing makes zinc layers be fully converted to zinc-iron alloy, is broken in austenitizing temperature For elongation 28% or more, which shapes performance with excellent afterwards.
Galvanizing recrystallization annealing heating and temperature control is below austenitizing temperature.Recrystallization annealing heating and temperature control In austenitizing temperature hereinafter, later by alloying steel plate punched at part, to its quenching treatment, the Quench heating mode is Sensing heating or conduction heating, heating temperature are 750 DEG C~950 DEG C, two-phase section heating or austenitic area heating, the type of cooling It is cooling jet or misting cooling or water-spraying control, cooling velocity is more than 10 DEG C/s.The more demanding part of part strength with compared with Fast speed cooling, part strength require the relatively low higher part of toughness reguirements, cool down, also may be used at relatively slow speeds Will cool down terminal selection in higher temperature, i.e. intensity and cooling velocity needs to match；The tensile strength at parts quenching position More than 1000MPa, elongation is more than 10%, and the structure property between part strength different piece has uniform transition.
It can select heating temperature and cooling velocity, two-phase section heating that can control according to requirement of the part for intensity The content of austenite, to control the content of martensite.Cooling velocity is higher, it is ensured that austenite base during cooling This generation ferrite, perlitic transformation, control cooling velocity and cooling outlet temperature, can control austenite transmutation product, cold But speed is relatively slow, outlet temperature is higher, can obtain bainite structure, and the intensity of steel is relatively low, toughness is preferable, cooling Relatively fast, the cooling outlet temperature of speed is relatively low, can obtain martensitic structure, the intensity of steel is higher.
The beneficial effects of the present invention are：Had using the alloy galvanized steel plate that method provided by the invention produces excellent Good punch forming performance, while there is good quenching property after shaping, intensity can be obtained and reach 1000MPa's or more Part, and being capable of effective energy saving and resource.
Specific implementation mode
Below by embodiment, the present invention is further illustrated.
The embodiment of the present invention passes through smelting-continuous casting-hot rolling-pickling-according to the component proportion of technical solution into andante After cold rolling, recrystallization annealing+galvanizing+zinc layers Alloying Treatment is carried out in Continuous Hot Dip Galvanizing Line, punching press later is quenched Fire.The ingredient of steel of the embodiment of the present invention is shown in Table 1.The main technologic parameters and performance of steel of the embodiment of the present invention are shown in Table 2.
The ingredient of 1 steel of the embodiment of the present invention of table
Embodiment C Si Mn Al Cr Mo Ni Cu B V Ti Nb Ca Mg
1 0.08 0.35 1.5 0.02 2.0 0.03
2 0.09 0.01 1.6 0.5 0.3 0.002
3 0.13 0.3 2.1 0.02 0.3 0.2 0.04 0.003
4 0.14 0.15 2.8 0.03 0.5
5 0.15 0.4 2.3 0.04 0.5 0.003 0.001 0.001
6 0.17 1.5 2.0 0.1 0.3 0.05
7 0.17 0.5 3.5 0.06 0.2 0.07
8 0.20 2.0 2.5 0.03 0.005
9 0.23 0.2 1.7 0.3 0.4 0.001 0.02 0.02
10 0.25 0.5 1.0 1.0 0.3 0.4 0.05 0.02
11 0.30 0.7 3.0 0.05 0.5 0.6
12 0.40 1.8 0.8 0.6 1.0 0.8
13 0.50 0.8 1.2 0.8 1.5 1.8 0.0005
14 0.65 1.0 1.4 0.04 1.5 0.0005
The main technologic parameters and performance of 2 steel of the embodiment of the present invention of table

Claims (1)

1. a kind of quenching alloy galvanized steel plate, which is characterized in that the matrix composition of the steel plate is as follows by weight percentage：C 0.08%~0.65%, Si 0.01%~2.0%, Mn 0.80%~3.00%, P≤0.020%, S≤0.020%, Al 0.02%~1.00%, contain Cr 0.50%~1.50%, Mo 0.15%~1.50%, Ni 0.50%~2.00%, Cu The matrix composition of at least one of 0.20%~0.80%, B 0.001%~0.005%, the steel plate also contain V 0.10% ~0.50%, Ti 0.02%~0.20%, Nb 0.02%~0.20%, Ca 0.0005%~0.002%, Mg 0.0005% At least one of~0.002%；Remaining is Fe and inevitable impurity element；The coating of the steel plate is iron-kirsite；
The matrix of the steel plate is 50%~100%+ of Martensite Volume Fraction ferrite volume fractions 0%~50%；
The manufacturing method of the quenching alloy galvanized steel plate, which is characterized in that steel plate passes through smelting-continuous casting-hot rolling-acid Wash-cold rolling after, in Continuous Hot Dip Galvanizing Line carry out recrystallization annealing+galvanizing+zinc layers Alloying Treatment, wherein hot rolling Finishing temperature is more than 880 DEG C, and 550 DEG C~680 DEG C of coiling temperature, cold-rolled compression ratio is more than 40%, recrystallization annealing heating temperature Control is in austenitizing temperature hereinafter, later by alloying steel plate punched at part, to its quenching treatment, the Quench heating side Formula is sensing heating or conduction heating, and heating temperature is 750 DEG C~950 DEG C, and two-phase section heating or austenitic area heating are cooling Mode is cooling jet or misting cooling or water-spraying control, and cooling velocity is more than 10 DEG C/s.
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CN110499457B (en) * 2019-08-07 2021-06-22 邯郸钢铁集团有限责任公司 High-surface-quality 1200 MPa-grade hot-galvanized dual-phase steel and production method thereof
CN110499465A (en) * 2019-09-02 2019-11-26 鞍钢股份有限公司 A kind of low-cost high-strength galvanized steel plain sheet and its manufacturing method
CN110819905A (en) * 2019-12-10 2020-02-21 马鞍山钢铁股份有限公司 340 MPa-level boron-containing high-strength and high-toughness hot-dip galvanized structural steel and production method thereof
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CN112795849B (en) * 2020-11-20 2022-07-12 唐山钢铁集团有限责任公司 1300Mpa high-toughness hot-dip galvanized steel plate and production method thereof
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CN115852270A (en) * 2022-11-18 2023-03-28 莱芜钢铁集团银山型钢有限公司 Double-phase wear-resistant corrosion-resistant steel pipe for sediment conveying pipeline and preparation method thereof
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