CN114086066A - Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof - Google Patents

Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof Download PDF

Info

Publication number
CN114086066A
CN114086066A CN202111340965.1A CN202111340965A CN114086066A CN 114086066 A CN114086066 A CN 114086066A CN 202111340965 A CN202111340965 A CN 202111340965A CN 114086066 A CN114086066 A CN 114086066A
Authority
CN
China
Prior art keywords
wire rod
alloy material
corrosion
temperature
hot
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
Application number
CN202111340965.1A
Other languages
Chinese (zh)
Inventor
刘珍光
王一鸣
潘楠
郑传波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu University of Science and Technology
Original Assignee
Jiangsu University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu University of Science and Technology filed Critical Jiangsu University of Science and Technology
Priority to CN202111340965.1A priority Critical patent/CN114086066A/en
Publication of CN114086066A publication Critical patent/CN114086066A/en
Pending legal-status Critical Current

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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • 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
    • C22C38/12—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
    • 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
    • C21D2211/004—Dispersions; Precipitations
    • 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
    • C21D2211/009—Pearlite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention discloses a hydrogen sulfide corrosion resistant low alloy material, which comprises the following components in percentage by mass: 0.04-0.12% of C, 0.2-0.3% of Si, 0.8-1.1% of Mn, 0.2-0.3% of Mo, 0.01-0.04% of Al, less than or equal to 0.01% of P, less than or equal to 0.005% of S, 0.02-0.2% of Ti, 0.01-0.1% of Nb, 0.01-0.1% of W and the balance of Fe, the total mass percent is 100%, and the microstructure of the material is tempered sorbite + carbide. The low alloy material of the present invention exhibits excellent surface H resistance2S corrosion performance, low comprehensive cost, simple preparation process and strong feasibility. The invention also discloses an anti-H2A preparation method and application of an S-corrosion low alloy material.

Description

Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof
Technical Field
The invention belongs to the technical field of metal materials and metallurgy, and particularly relates to an anti-H alloy2S-corrosion low alloy material, and a preparation method and application thereof.
Background
Climate change is one of the major challenges facing mankind, and since the industrial revolution, human activities have burned a large amount of fossil energy and discharged a large amount of CO2The gas goes to the atmosphere, thereby causing climate change. The carbon peak is the highest point of carbon emission, namely the carbon peak value, in the process of descending from ascending to descending of the carbon emission of main bodies of countries, cities, enterprises and the like all over the world. Most developed countries have achieved carbon peaks and carbon emissions into the decline tunnel. CCS technology has received a wide range of attention from both the academic and industrial communities of developed countries as a class of technologies dedicated to research and development of carbon dioxide separation, capture, transport and sequestration, and offers the potential for coordinating the use of fossil energy with the conflicting policy goals of mitigating climate change. Large amount of CO2The carbon capture and sequestration device can be assembled on a large-scale emission source such as a power plant, the large-scale popularization of CCS requires the development of transportation facilities to connect capture and sequestration sites, and pipeline transportation is an economic and efficient carrying mode. In transporting CO2In the process, if the gas is doped with a small amount of H2S gas, the corrosion mode is changed into H2Corrosion failure due to S predominating, aggravating CO2And (6) corrosion. Thus, anti-H was investigated2The S-corrosion pipeline steel has important significance for ensuring the safe operation of the CCS.
Disclosure of Invention
The invention aims at resisting H in a gathering and transportation pipeline in the carbon peak-reaching carbon neutralization technology2S corrosion resistance is poor, and provides a kind of anti-H2S-corrosion low alloy material, and a preparation method and application thereof. The low-alloy material is suitable for manufacturing the armor layer of the flexible hose and has H resistance2S surface corrosion performance.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
anti-H2The low alloy material with corroded S surface comprises the following components in percentage by mass: 0.04-0.12% of C, 0.2-0.3% of Si, 0.8-1.1% of Mn, 0.2-0.3% of Mo, 0.01-0.04% of Al, less than or equal to 0.01% of P, less than or equal to 0.005% of S, 0.02-0.2% of Ti, 0.01-0.1% of Nb, 0.01-0.1% of W and the balance of Fe, the total mass percent is 100%, and the microstructure of the material is tempered sorbite + carbide.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
A preparation method of a hydrogen sulfide corrosion resistant low alloy material comprises the following specific steps:
step 1, smelting according to a set chemical component mass percentage formula, and casting into a continuous casting blank;
step 2, conveying the continuous casting blank to a heating furnace by adopting a hot charging and hot conveying mode, raising the temperature to 1150-1250 ℃ again, and heating for 60-80 min;
and 3, transporting the reheated continuous casting blank to a high-speed wire rod production line by using a conveying roller for hot rolling, wherein the rolling starting temperature is 1100-1200 ℃, the rolling finishing temperature is 850-920 ℃, cooling the hot-rolled wire rod to 800-820 ℃ by adopting an ultra-fast cooling technology, and then slowly cooling the wire rod to 200-400 ℃ by using accelerated air. Obtaining a wire rod with the section shape of phi 10-12 mm;
step 4, removing iron scales from the hot-rolled wire rod, and rolling by adopting a cold forming unit to obtain the wire rod with the cross section of the shape of
Figure RE-GDA0003445150970000021
Shaped cold-formed material；
And 5, carrying out heat treatment on the cold forming material to obtain the low alloy material with the microstructure of tempered sorbite and carbide.
Further preferably, the heat treatment process and specific parameters in step 5 are that the cold-formed material is heated to 950 ℃ in a heat treatment furnace, and the temperature is maintained for 60-80min, water quenched to room temperature, and then heated to 620 ℃ again and the temperature is maintained for 60-90 min.
The invention relates to an anti-H2The application of the S surface corroded low alloy material in preparing carbon neutralization technology for carbon capture and storing related products.
Further preferably, it is resistant to H2The low alloy material with corroded S surface is applied to an armor layer of a flexible hose.
Compared with the prior art, the invention has the advantages and beneficial effects that:
anti-H of the invention2The S-corrosion low-alloy material has the advantages of low production cost, ingenious structural design and good corrosion resistance. Conventional improvement of H resistance2S corrosion resistance is improved by adding a large amount of expensive Cr element and forming a passive film on the surface of the steel. In the application, a large amount of expensive Cr elements are not added, and trace amounts of Ti, Nb and W elements are added. By forming dispersed carbides in the steel, the carbides can improve the strength through precipitation strengthening effect, and can also be used as heterogeneous nucleation points of FeS crystals serving as corrosion products in the corrosion process, so that fine crystals are promoted to be formed on the surface of a sample. The corrosion resistance test method is different from the conventional corrosion resistance design in scientific basis and principle, and has obvious progress, and good experimental results are obtained while expensive elements are reduced. In terms of corrosion resistance, the corrosion rate of the conventional low-alloy material is not 0.5-1mm/y, while the corrosion rate is less than 0.1mm/y in the application, and the corrosion grade is improved from grade 7 to grade 5, so that the corrosion resistance is remarkably improved.
The effect of the steel on neutralizing chemical elements is as follows:
c, carbon is an important alloy element in steel, and can be combined with micro-alloy elements Nb, Ti and W to form carbide in the application, and the carbide serves as a nucleation point to promote a large number of fine corrosion crystals to be formed on the surface of a sample so as to improve the corrosion resistance.
Si and Si are added into steel to improve corrosion resistance, but when the content of Si and Si is higher than 1%, the workability and toughness are deteriorated, and the selection of Si and Si is less than 0.3%;
mn and Mn are essential elements for improving the strength and toughness of steel, and the corrosion resistance is remarkably reduced after the addition amount is excessive (more than 1.5 percent), preferably 0.8 to 1.1 percent;
p and phosphorus elements are easy to form structure segregation, the corrosion resistance is reduced, and the content of P is reduced as much as possible, wherein P is less than 0.01;
s, sulfur is easy to form sulfide inclusions, corrosion resistance is reduced, and the content of S is less than 0.005;
mo and Mo can react with oxygen in solution to form MoO on the surface of steel2In order to improve corrosion resistance and inhibit pitting corrosion, 0.2-0.3% is preferred in the application;
ti, Nb and W are important microalloy elements, the elements and C have a preferential combination sequence, and form carbide in steel, and the carbide can be used as a nucleation point in the subsequent corrosion process, so that the formation of a large amount of fine corrosion products is promoted, and the corrosion resistance is improved;
drawings
FIG. 1 is a microstructure of a low alloy material after heat treatment in example 1 of the present invention;
FIG. 2 is a graph of the carbide distribution of the low alloy material after heat treatment in example 1 of the present invention;
FIG. 3 shows a graph of the temperature of the paper tape H in example 1 of the present invention2And (4) the macroscopic morphology of the soaked S saturated aqueous solution.
FIG. 4 shows example 1 of the present invention via H2The microscopic surface morphology after S saturated aqueous solution immersion shows a large number of fine crystals.
Detailed Description
The present invention will be described and illustrated in further detail with reference to specific examples. The content is to explain the invention and not to limit the scope of protection of the invention.
Example 1
anti-H2S surface corrosion low alloy material in percentage by massThe components in percentage by weight are as follows: 0.05% of C, 0.22% of Si, 0.9% of Mn, 0.22% of Mo, 0.02% of Al, 0.004% of P, 0.002% of S, 0.03% of Ti, 0.03% of Nb, 0.03% of W and the balance of Fe.
And (3) conveying the continuously cast billets smelted in the blast furnace to a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1160 ℃, and preserving heat for 65min at the temperature. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, finally rolling the continuous casting blank into an intermediate blank with a round section, wherein the starting rolling temperature is 1120 ℃, and the final rolling temperature is 854 ℃. The wire rod coming out of the high-speed wire rod rolling mill is subjected to accelerated cooling by adopting high-speed water, and the final water cooling temperature is 805 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 255 ℃. Removing surface iron scale from the hot-rolled wire rod, and sending the wire rod into a cold forming unit for cold forming experiment to obtain a section
Figure RE-GDA0003445150970000031
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000041
And heating the steel in the heat treatment furnace again to 860 ℃, preserving heat for 65min at the temperature, taking out the heated steel, putting the heated steel into water, heating the steel again to 530 ℃, preserving heat for 68min at the temperature, taking out the steel, and slowly cooling the steel to room temperature in the air. The microstructure of the low alloy material after heat treatment is shown in figures 1 and 2.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion experiment, setting the corrosion period to be 20 years, and setting the final corrosion rate to be 0.07 mm/y. Warp H2The macroscopic morphology of the material soaked in the S saturated aqueous solution is shown in figure 3, and the microscopic morphology is shown in figure 4.
Example 2
anti-H2The S surface corrosion low alloy material comprises the following components in percentage by mass: 0.06% of C, 0.23% of Si, 0.9% of Mn, 0.22% of Mo, Al0.02%, P0.004%, S0.002%, Ti 0.07%, Nb 0.05%, W0.05%, and the balance of Fe.
And (3) conveying the continuously cast bloom smelted by the blast furnace into a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1178 ℃, and preserving heat for 70min at the temperature. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, and finally rolling the continuous casting blank into an intermediate blank with a circular section, wherein the starting rolling temperature is 1130 ℃ and the final rolling temperature is 860 ℃. The wire rod coming out of the high-speed wire rod rolling mill is subjected to accelerated cooling by adopting high-speed water, and the final water cooling temperature is 810 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 260 ℃. Removing surface iron scale from the hot-rolled wire rod, and sending the wire rod into a cold forming unit for cold forming experiment to obtain a section
Figure RE-GDA0003445150970000042
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000043
And heating the steel in the heat treatment furnace again to 880 ℃, preserving heat for 70min at the temperature, taking out the heated steel, putting the heated steel into water, heating again to 535 ℃, preserving heat for 72min at the temperature, taking out the steel, and slowly cooling to room temperature in the air.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion experiment, setting the corrosion period to be 20 years, and setting the final corrosion rate to be 0.08 mm/y.
Example 3
anti-H2The S surface corrosion low alloy material comprises the following components in percentage by mass: 0.08 percent of C, 0.25 percent of Si, 1 percent of Mn, 0.25 percent of Mo, 0.02 percent of Al, 0.005 percent of P, 0.002 percent of S, 0.09 percent of Ti, 0.07 percent of Nb, 0.05 percent of W and the balance of Fe.
Conveying the continuously cast bloom smelted by the blast furnace into a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1190 ℃, and the temperature is controlled at the heating temperatureThe temperature is kept for 72 min. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, and finally rolling the continuous casting blank into an intermediate blank with a circular section, wherein the rolling temperature is 1160 ℃ and the final rolling temperature is 875 ℃. The wire rod coming out of the high-speed wire rod rolling mill is subjected to accelerated cooling by adopting high-speed water, and the final water cooling temperature is 815 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 288 ℃. Removing surface iron scale from the hot-rolled wire rod, and sending the wire rod into a cold forming unit for cold forming experiment to obtain a section
Figure RE-GDA0003445150970000051
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000052
And heating the steel in the heat treatment furnace again to 890 ℃, preserving the heat for 74 min at the temperature, taking out the heated steel, putting the heated steel into water, heating again to 550 ℃, preserving the heat for 75min at the temperature, taking out the heated steel, and slowly cooling the steel to room temperature in the air.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion experiment, setting the corrosion period to be 20 years, and setting the final corrosion rate to be 0.06 mm/y.
Example 4
anti-H2The S surface corrosion low alloy material comprises the following components in percentage by mass: 0.09% of C, 0.25% of Si, 1% of Mn, 0.25% of Mo, 0.02% of Al, 0.005% of P, 0.002% of S, 0.12% of Ti, 0.07% of Nb, 0.06% of W and the balance of Fe.
And (3) conveying the continuously cast bloom smelted by the blast furnace into a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1205 ℃, and preserving heat for 75min at the temperature. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, finally rolling the continuous casting blank into an intermediate blank with a circular section, wherein the rolling temperature is 1165 ℃ and the final rolling temperature is 895 ℃. Coming from high-speed wire-rolling millsThe wire is accelerated cooled by high-speed water, and the final water cooling temperature is 816 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 300 ℃. Removing surface iron scale from the hot-rolled wire rod, and sending the wire rod into a cold forming unit for cold forming experiment to obtain a section
Figure RE-GDA0003445150970000053
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000054
And heating the steel in the heat treatment furnace again to the temperature of 910 ℃, preserving heat for 74 min at the temperature, taking out the heated steel, putting the heated steel into water, heating again to the temperature of 570 ℃, preserving heat for 80min at the temperature, taking out the steel, and slowly cooling the steel to the room temperature in the air.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion experiment, setting the corrosion period to be 20 years, and setting the final corrosion rate to be 0.09 mm/y.
Example 5
anti-H2The S surface corrosion low alloy material comprises the following components in percentage by mass: 0.11% of C, 0.27% of Si, 1% of Mn, 0.28% of Mo, 0.03% of Al, 0.006% of P, 0.002% of S, 0.16% of Ti, 0.08% of Nb, 0.08% of W and the balance of Fe.
And (3) conveying the continuously cast bloom smelted by the blast furnace into a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1230 ℃, and preserving heat for 75min at the temperature. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, finally rolling the continuous casting blank into an intermediate blank with a circular section, wherein the initial rolling temperature is 1180 ℃, and the final rolling temperature is 900 ℃. The wire rod coming out of the high-speed wire rod rolling mill is subjected to accelerated cooling by adopting high-speed water, and the final water cooling temperature is 815 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 322 ℃. Removing surface iron scale from the hot-rolled wire rod, sending the wire rod into a cold forming unit for cold forming experiment, and further obtaining the broken wireNoodle
Figure RE-GDA0003445150970000063
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000062
And heating the steel in the heat treatment furnace again to 920 ℃, preserving the heat for 80min at the temperature, taking out the heated steel, putting the heated steel into water, heating the steel again to 610 ℃, preserving the heat for 85min at the temperature, taking out the steel, and slowly cooling the steel to room temperature in the air.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion experiment, setting the corrosion period to be 20 years, and setting the final corrosion rate to be 0.07 mm/y.
In conclusion, the invention resists H2The S-corrosion low alloy steel material has low cost and simple preparation method, and is particularly suitable for preparing carbon capture/storage products in a corrosion environment.
Comparative example 1
anti-H2The S surface corrosion low alloy material comprises the following components in percentage by mass: 0.15% of C, 0.4% of Si, 1.5% of Mn, 0.22% of Mo, 0.02% of Al, 0.004% of P, 0.002% of S and the balance of Fe.
And (3) conveying the continuously cast bloom smelted by the blast furnace into a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1220 ℃, and the temperature is kept for 80 min. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, finally rolling the continuous casting blank into an intermediate blank with a circular section, wherein the initial rolling temperature is 1110 ℃, and the final rolling temperature is 899 ℃. The wire rod coming out of the high-speed wire rod rolling mill is subjected to accelerated cooling by adopting high-speed water, and the final water cooling temperature is 805 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 200 ℃. Removing surface iron scale from the hot-rolled wire rod, and sending the wire rod into a cold forming unit for cold forming experiment to obtain a section
Figure RE-GDA0003445150970000064
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000061
And heating the steel in the heat treatment furnace again to 860 ℃, preserving heat for 60min at the temperature, taking out the heated steel, putting the heated steel into water, heating the steel again to 530 ℃, preserving heat for 62min at the temperature, taking out the steel, and slowly cooling the steel to room temperature in the air.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion test, the final corrosion rate is 0.5 mm/y.
Comparative example 2
anti-H2The S surface corrosion low alloy material comprises the following components in percentage by mass: 0.04% of C, 0.3% of Si, 1.1% of Mn, 0.2% of Mo, 0.02% of Al, 0.004% of P, 0.002% of S, 0.01% of Ti, 0.01% of Nb, 0.01% of W and the balance of Fe.
And (3) conveying the continuously cast billets smelted in the blast furnace to a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1230 ℃, and keeping the temperature for 60 min. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, and finally rolling the continuous casting blank into an intermediate blank with a round section, wherein the initial rolling temperature is 1120 ℃, and the final rolling temperature is 850 ℃. The wire rod coming out of the high-speed wire rod rolling mill is subjected to accelerated cooling by adopting high-speed water, and the final water cooling temperature is 818 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 220 ℃. Removing surface iron scale from the hot-rolled wire rod, and sending the wire rod into a cold forming unit for cold forming experiment to obtain a section
Figure RE-GDA0003445150970000073
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000074
Shape steel is againHeating in a heat treatment furnace to 840 ℃, keeping the temperature for 20 min, taking out the heated steel, putting the heated steel into water, heating to 650 ℃ again, keeping the temperature for 10min, taking out the heated steel, and slowly cooling to room temperature in the air.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion test, the final corrosion rate is 0.3 mm/y.
Comparative example 3
anti-H2The S surface corrosion low alloy material comprises the following components in percentage by mass: 0.18% of C, 0.4% of Si, 1.5% of Mn, 0.2% of Mo, 0.02% of Al, 0.004% of P, 0.002% of S and the balance of Fe.
And (3) conveying the continuously cast billets smelted in the blast furnace to a heating furnace for reheating by adopting a hot charging and hot conveying mode, wherein the heating temperature is 1230 ℃, and keeping the temperature for 60 min. And conveying the heated continuous casting blank to a high-speed wire rod rolling unit by using a conveying roller to perform a hot rolling experiment, and finally rolling the continuous casting blank into an intermediate blank with a round section, wherein the initial rolling temperature is 1120 ℃, and the final rolling temperature is 850 ℃. The wire rod coming out of the high-speed wire rod rolling mill is subjected to accelerated cooling by adopting high-speed water, and the final water cooling temperature is 818 ℃. And then cooling by adopting accelerated air, and stopping air cooling after cooling to 220 ℃. Removing surface iron scale from the hot-rolled wire rod, and sending the wire rod into a cold forming unit for cold forming experiment to obtain a section
Figure RE-GDA0003445150970000072
And (5) shaping steel.
Cross section of a steel pipe
Figure RE-GDA0003445150970000071
And heating the steel in the heat treatment furnace again to 960 ℃, preserving heat for 10min at the temperature, taking out the heated steel, putting the heated steel into water, heating the steel again to 510 ℃, preserving heat for 15min at the temperature, taking out the steel, and slowly cooling the steel to room temperature in the air.
The low alloy material is used as an armor layer, and then the flexible hose is manufactured.
By saturated H2Aqueous S solution to H2S corrosion test, the final corrosion rate is 0.4 mm/y.

Claims (6)

1. The low alloy material for resisting the corrosion of the hydrogen sulfide is characterized by comprising the following components in percentage by mass: 0.04-0.12% of C, 0.2-0.3% of Si, 0.8-1.1% of Mn, 0.2-0.3% of Mo, 0.01-0.04% of Al, less than or equal to 0.01% of P, less than or equal to 0.005% of S, 0.02-0.2% of Ti, 0.01-0.1% of Nb, 0.01-0.1% of W and the balance of Fe, wherein the total mass percent is 100%.
2. The method for preparing the hydrogen sulfide corrosion resistant low alloy material according to claim 1, comprising the following steps:
step 1, carrying out steelmaking according to a set chemical component mass percentage formula, and casting into a continuous casting blank;
step 2, conveying the continuous casting blank to a heating furnace by adopting a hot charging and hot conveying mode, raising the temperature to 1150-1250 ℃ again, and heating for 60-80 min;
step 3, transporting the reheated continuous casting blank to a high-speed wire rod production line by using a conveying roller for hot rolling, wherein the rolling starting temperature is 1100-1200 ℃, the rolling finishing temperature is 850-920 ℃, the hot-rolled wire rod is cooled to 800-820 ℃ by adopting an ultra-fast cooling technology, and then the hot-rolled wire rod is slowly cooled to 200-400 ℃ by using accelerated air, so that a wire rod with the section shape of phi 10-12 mm is obtained;
step 4, removing iron scales from the hot-rolled wire rod, and rolling by adopting a cold forming unit to obtain the wire rod with the cross section of the shape of
Figure FDA0003352043810000011
Cold-forming the material in shape;
and 5, carrying out heat treatment on the cold forming material to obtain the final low-alloy material.
3. The method as claimed in claim 2, wherein the heat treatment process and specific parameters in step 5 are that the cold-formed material is first heated to 850-.
4. The low alloy material resistant to hydrogen sulfide corrosion of claim 2, wherein the microstructure is tempered sorbite + carbide.
5. Use of a low alloy material resistant to corrosion by hydrogen sulphide according to claim 1, in the preparation of carbon-peaked carbon-neutralising technology-related products.
6. Use according to claim 5, in an armour layer for flexible hoses.
CN202111340965.1A 2021-11-12 2021-11-12 Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof Pending CN114086066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111340965.1A CN114086066A (en) 2021-11-12 2021-11-12 Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111340965.1A CN114086066A (en) 2021-11-12 2021-11-12 Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof

Publications (1)

Publication Number Publication Date
CN114086066A true CN114086066A (en) 2022-02-25

Family

ID=80300330

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111340965.1A Pending CN114086066A (en) 2021-11-12 2021-11-12 Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN114086066A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102851582A (en) * 2011-06-28 2013-01-02 鞍钢股份有限公司 Corrosion-resistant steel for acidic crude oil storage tank and its manufacturing method
CN109355476A (en) * 2018-12-05 2019-02-19 江苏科技大学 A kind of anti-CO2Low-alloy steel material of corrosion and the preparation method and application thereof
CN109371326A (en) * 2018-12-05 2019-02-22 江苏科技大学 A kind of anti-H2S/CO2Low-alloy steel material of corrosion and the preparation method and application thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102851582A (en) * 2011-06-28 2013-01-02 鞍钢股份有限公司 Corrosion-resistant steel for acidic crude oil storage tank and its manufacturing method
CN109355476A (en) * 2018-12-05 2019-02-19 江苏科技大学 A kind of anti-CO2Low-alloy steel material of corrosion and the preparation method and application thereof
CN109371326A (en) * 2018-12-05 2019-02-22 江苏科技大学 A kind of anti-H2S/CO2Low-alloy steel material of corrosion and the preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN101586216B (en) Ultra-high strength and toughness bainitic steel and manufacturing method thereof
CN114959460B (en) Low-yield-ratio easy-welding weather-resistant bridge steel and manufacturing method thereof
CN108728743B (en) The good Marine Engineering Steel of low temperature fracture toughness and its manufacturing method
KR20200072552A (en) Steel for hot stamping, hot stamping process and molded components
CN107686943B (en) 370 MPa-yield-strength rare earth weather-resistant bridge steel plate and preparation method thereof
CN103789660B (en) Micro Alloying hinging pin shaft and manufacture method thereof
CN108385022A (en) The corrosion-resistant bainite rail of heavy haul railway high toughness wear resistant and its manufacturing method
CN105586529B (en) A kind of 890MPa grade high-strengths steel, steel pipe and its manufacture method
CN102477518A (en) Steel used for steam turbine blades and manufacturing method thereof
CN101928876A (en) TRIP/TWIP high strength plastic automotive steel with excellent processability and preparation method thereof
CN109554621B (en) Low-density Fe-Mn-Al-C hot-rolled Q & P steel and manufacturing method thereof
CN113584376B (en) 800 MPa-grade weathering steel and preparation method thereof, and fastener and preparation method thereof
CN103614640A (en) High-temperature oxidation-resistant steel for non-coating hot stamping
CN102400043A (en) Large-thickness steel plate for oceaneering and production method thereof
CN108149137A (en) A kind of ocean engineering EH460 super-thick steel plates and its manufacturing method
CN109930069B (en) Manufacturing method of light steel plate with ultrahigh strength and high toughness
CN114959509A (en) 690 MPa-grade high-toughness steel plate and production method thereof
CN107287506A (en) A kind of 650MPa grades of medium temperature and medium pressure boiler plate and its production method
CN103882294A (en) Ni-saving type low-temperature steel plate and preparation method thereof
CN104694821A (en) V-contained and H2S corrosion resistive L360QS seamless pipeline tube and preparation method thereof
CN103451553B (en) A kind of ultra-low temperature surroundings reinforcing bar and preparation method thereof
CN103510017A (en) Ultrahigh-strength light armor plate and manufacturing method thereof
CN114086066A (en) Hydrogen sulfide corrosion resistant low alloy material and preparation method and application thereof
CN114107824B (en) Corrosion-resistant low-temperature-resistant spring steel for railway fastener and production method and heat treatment method thereof
CN115341138A (en) High-strength protective steel plate and manufacturing method 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: 20220225