CN115679218B - Steel for coastal atmospheric environment refining pipeline and corrosion evaluation method thereof - Google Patents
Steel for coastal atmospheric environment refining pipeline and corrosion evaluation method thereof Download PDFInfo
- Publication number
- CN115679218B CN115679218B CN202211421213.2A CN202211421213A CN115679218B CN 115679218 B CN115679218 B CN 115679218B CN 202211421213 A CN202211421213 A CN 202211421213A CN 115679218 B CN115679218 B CN 115679218B
- Authority
- CN
- China
- Prior art keywords
- corrosion
- steel
- environment
- percent
- pipeline
- 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.)
- Active
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 212
- 230000007797 corrosion Effects 0.000 title claims abstract description 210
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 113
- 239000010959 steel Substances 0.000 title claims abstract description 113
- 238000011156 evaluation Methods 0.000 title claims abstract description 55
- 238000007670 refining Methods 0.000 title claims description 23
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 42
- 239000001257 hydrogen Substances 0.000 claims abstract description 41
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005336 cracking Methods 0.000 claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 230000007613 environmental effect Effects 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 230000035945 sensitivity Effects 0.000 claims description 14
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 9
- 238000004088 simulation Methods 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004448 titration Methods 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 5
- 238000007654 immersion Methods 0.000 abstract description 4
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 229910052710 silicon Inorganic materials 0.000 abstract description 4
- 229910052684 Cerium Inorganic materials 0.000 abstract description 3
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 21
- 239000011572 manganese Substances 0.000 description 14
- 239000010949 copper Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 10
- 229910052761 rare earth metal Inorganic materials 0.000 description 9
- 239000000523 sample Substances 0.000 description 7
- 238000005204 segregation Methods 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 150000002910 rare earth metals Chemical class 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- -1 hydrogen ions Chemical class 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005504 petroleum refining Methods 0.000 description 3
- 238000009991 scouring Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910017566 Cu-Mn Inorganic materials 0.000 description 1
- 229910017871 Cu—Mn Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005087 graphitization Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910006540 α-FeOOH Inorganic materials 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to the technical field of steel for a smelting pipeline, in particular to steel for a pipeline in a coastal atmospheric environment and a corrosion evaluation method thereof. The composite material consists of the following chemical components in percentage by weight: 0.02 to 0.06 percent of C, 0.10 to 0.30 percent of Si, 0.40 to 0.90 percent of Mn, less than or equal to 0.008 percent of P, less than or equal to 0.002 percent of S, 1.0 to 1.5 percent of Ni, 0.40 to 0.80 percent of Cu, 0.010 to 0.015 percent of Ce, 0.50 to 1.00 percent of Alt, wherein Mn+Cu=1.00 to 1.60 percent, and the balance of Fe and unavoidable impurities. The corrosion evaluation method comprises 1) determining the corrosion environment conditions and experimental parameters of the inner wall and the outer wall; 2) Performing a hydrogen induced cracking test according to the GBT 8650-2006 method in a simulated corrosion solution environment; stress corrosion tests were performed according to GBT4157-2017 method; the TB/T2375-93 method was used for the peri-immersion test. 3) Determining corrosion evaluation boundary conditions, and establishing a corrosion rate evaluation system and a stress corrosion boundary system; 4) And evaluating the applicability of the refined pipeline steel according to an environmental corrosion evaluation system. Is suitable for the double-sided corrosion of coastal industrial atmosphere and internal industrial medium, and meets the requirement of the offshore petroleum refinery on the safe and full-length periodic service of pipelines.
Description
Technical Field
The invention relates to the technical field of steel for a smelting pipeline, in particular to steel for a pipeline in a coastal atmospheric environment and a corrosion evaluation method thereof.
Background
The construction of the refining base in coastal areas is beneficial to offshore import of crude oil, export of chemical products and safe operation. However, the high-humidity and high-salt environment in coastal areas has potential corrosion risks for petroleum refining equipment, and particularly, process pipelines for connecting various devices, for example, the total length of a pipeline of a refining plant capable of producing tens of thousands of tons per year reaches tens of kilometers, and various oiling media are contacted in production. The inner wall of the pipeline is in a corrosion environment containing sulfide (in crude oil) and chlorine (in an auxiliary agent containing organic compounds), and the inner wall mainly generates hydrogen induced cracking and stress corrosion to induce corrosion failure; the outer wall is in coastal atmosphere corrosion environment, and the outer wall is mainly corroded comprehensively. Corrosion of the inner wall and the outer wall of the refining pipeline provides great test for safe operation of the pipeline, and the safety accidents caused by corrosion and leakage of the pipeline are serious threats to safe and economic operation of a refining plant all the time.
The disclosed invention patent is an experimental device and method for evaluating scouring corrosion of an oil and gas pipeline at a high flow rate (publication number CN 105866018B), and is a device for evaluating scouring corrosion of an oil and gas pipeline at a high flow rate, and the measurement of average corrosion rate and local pitting corrosion rate under the high flow rate scouring condition is realized through a test probe in the device; the electrochemical probe is used for acquiring electrochemical information of a pipe sample; the shear stress probe realizes the acquisition of the influence information of mechanical factors on corrosion. The method is mainly to invent a test device, and uses a monitoring probe and develops a simulated corrosion test to acquire data information. However, the corrosion type of the patent is erosion corrosion, and unlike hydrogen induced cracking and stress corrosion commonly involved in refining pipelines, the patent fails to provide an evaluation method for corrosion performance of steel for pipelines, and fails to provide a suitability reference for material selection.
The disclosed invention patent 'an injection and production string corrosion evaluation method under the combined action of alternating load and corrosion medium' (publication number CN 105092457B), from the disclosure, through basic parameter collection, axial load spectrum extraction, test comparison scheme design, and simulation of the combined action environment of alternating load and corrosion medium, finally experiments are carried out, result analysis is carried out, the influence of the combined action of alternating load and corrosion medium on the injection and production string is studied, and the material of the injection and production string is evaluated and optimized. The method mainly provides a corrosion evaluation experimental method under the combined action of alternating load and corrosive medium of the injection and production pipe. However, the corrosion type of the patent is corrosion under alternating load, and is different from hydrogen induced cracking and stress corrosion commonly involved in the inner wall of a refined pipeline and general corrosion involved in the outer wall, and the patent fails to provide an evaluation method and an evaluation index of steel for a pipeline, and fails to provide a reference for material selection.
The disclosed invention patent is a rapid evaluation method for stress corrosion sensitivity of low alloy structural steel in the atmospheric environment (publication No. CN 110823690A), and is an indoor acceleration test, wherein an analog or acceleration solution is adopted to carry out electrokinetic polarization test, and the stress corrosion sensitivity of the material is judged according to a class table by comparing the corrosion current density of loaded stress and unloaded stress. The method mainly provides a method for rapidly evaluating the stress corrosion sensitivity of the low alloy structural steel in the atmospheric environment. However, the corrosion environment related to the patent is stress corrosion of structural steel in an atmospheric environment, and is different from the condition that a smelting pipeline is subjected to combined action of different internal and external corrosion environments. The nature of the conveying material determines that the corrosion environment in which the refining pipeline is positioned is more severe and complex, and the requirement on safe operation of the refining pipeline is also higher. In addition, the above patents fail to evaluate the environmental suitability of low alloy structural steels.
The existing metal material and the corrosion evaluation method thereof have single corrosion environment, have no strict requirements on corrosion resistance, cannot be suitable for dual-medium corrosion of corrosion components in coastal industrial atmosphere and high-temperature and low-temperature oiled products, cannot provide evaluation indexes, and cannot provide references for material selection.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides steel for a pipeline refined in an offshore atmospheric environment and a corrosion evaluation method thereof, wherein the steel is suitable for double-sided corrosion of the offshore industrial atmosphere and an internal industrial medium, and meets the requirements of offshore petroleum refining factories on the safe and full-length periodic service of the pipeline; the corrosion evaluation method is suitable for dual-medium corrosion of corrosion components in coastal industrial atmosphere and high-temperature and low-temperature oiled products, can provide evaluation indexes and can provide references for material selection.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the steel for the coastal atmospheric environment refined pipeline consists of the following chemical components in percentage by weight:
0.02 to 0.06 percent of C, 0.10 to 0.30 percent of Si, 0.40 to 0.90 percent of Mn, less than or equal to 0.008 percent of P, less than or equal to 0.002 percent of S, 1.0 to 1.5 percent of Ni, 0.40 to 0.80 percent of Cu, 0.010 to 0.015 percent of Ce, 0.50 to 1.00 percent of Alt, wherein Mn+Cu=1.00 to 1.60 percent, and the balance of Fe and unavoidable impurities.
A corrosion evaluation method for steel for a coastal atmospheric environment refining pipeline comprises the following specific steps:
1) Determining the corrosion environment conditions and experimental parameters of the inner wall and the outer wall;
(1) sulfide and Cl contained in inner wall environment simulation of refined pipeline steel - The high and low temperature oiled product corrodes the environment;
the simulated corrosion solution comprises 0.05% -2% HCl and 100×10 -6 ～2000×10 -6 H 2 S concentration; simulation of H in solution 2 S concentration is achieved by adding Na to the HCl solution of the target concentration 2 S reacts to generate H 2 S is obtained, H in the simulated solution is determined by adopting a titration method 2 S concentration;
introducing the simulation solution into a reaction kettle, and adjusting the pH range of the solution to 3.0-6.0 on the basis of ensuring the same temperature and pressure as those of the service environment;
the simulated refining pipeline low-temperature service temperature T is less than or equal to 240 ℃; t is more than 240 ℃ and less than or equal to 425 ℃ in high-temperature service;
the total experimental pressure is 0.1-4 MPa;
the hydrogen induced cracking test time is more than 72 hours; the stress corrosion test is 720 hours or more;
(2) the outer wall of the refined pipeline steel simulates the coastal industrial atmospheric corrosion environment;
the simulated corrosion solution comprises 0.05 to 0.5 percent of NaCl and 0.l to 1.0 percent of NaHSO 3 The experimental time was 240h.
The corrosion environment of the inner wall and the outer wall is selected to be in accordance with the steel service environment for the coastal atmospheric environment refining pipeline.
2) Performing a hydrogen induced cracking test according to the GBT 8650-2006 method in a simulated corrosion solution environment; stress corrosion tests were performed according to GBT4157-2017 method; the TB/T2375-93 method was used for the peri-immersion test.
3) Determining corrosion evaluation boundary conditions, adhering to the principle that local corrosion is preferential and comprehensive corrosion is considered, and establishing a corrosion rate evaluation system and a stress corrosion boundary system; and (3) evaluating the hydrogen induced cracking sensitivity, sulfide stress corrosion sensitivity and comprehensive corrosion performance of the refined pipeline steel by using the established environmental corrosion evaluation system, and judging whether the material is suitable for the service environment.
4) Evaluating the applicability of the refined pipeline steel according to the indexes;
evaluation index:
(1) the corrosion rate is less than 2.0mm/a, the hydrogen induced cracking and stress corrosion are avoided, and the refined pipeline steel is considered to be suitable for the inner and outer wall corrosion environment;
(2) the corrosion rate is more than 2.0mm/a, the hydrogen induced cracking and stress corrosion are avoided, and the refined pipeline steel is not suitable for the inner and outer wall corrosion environment;
(3) the corrosion rate is less than 2.0mm/a, hydrogen induced cracking or stress corrosion occurs, and the refined pipeline steel is considered to be suitable for the inner and outer wall corrosion environment;
the evaluation index is suitable for the steel for the pipeline in the coastal atmospheric environment.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention fully considers the factors of the mechanical property, the service property and the like of the steel for the smelting pipeline in the component design. In order to ensure the matrix temperature and high-temperature strength of the pipeline steel, the solid solution strengthening effect is achieved by adding the C, mn and Ni alloy elements. In addition, the corrosion resistance of the inner surface and the outer surface of the pipeline steel to different media in the service process is completed through the single or synergistic effect of adding Cu, ni, alt element, wherein the self-corrosion effect is realized through adding more than 1% of Ni; more than 0.4% of Cu forms a corrosion-resistant protective layer and cooperates with Mn to form oxide filling cracks and holes, so that the corrosion-resistant effect is achieved; more than 0.5 percent of Al is added to play a passivation role, so that the acid corrosion resistance is improved; the Ce element is used as another important element of the invention, not only changes the form of the inclusion in the smelting process and purifies molten steel, but also has a certain hydrogen capturing effect, and improves the hydrogen induced cracking performance, thereby improving the corrosion resistance.
2. According to the invention, the hydrogen induced cracking sensitivity and sulfide stress corrosion sensitivity of the material are measured by simulating the inner wall environment of the smelted pipeline steel; simulating the outer wall environment of the smelted pipeline steel, and measuring the corrosion rate of the smelted pipeline steel; determining corrosion evaluation boundary conditions, adhering to the principle that local corrosion is preferential and comprehensive corrosion is considered, and establishing a corrosion rate evaluation system and a stress corrosion boundary system; and (3) evaluating the hydrogen induced cracking sensitivity, sulfide stress corrosion sensitivity and comprehensive corrosion performance of the refined pipeline steel by using the established environmental corrosion evaluation system, and judging whether the material is suitable for the service environment.
The corrosion evaluation method has the advantages that the corrosion environment of the inner wall and the outer wall is selected to be in line with the service environment of the steel for the pipeline in the coastal atmospheric environment, the evaluation index is suitable for the steel for the pipeline in the coastal atmospheric environment, the corrosion evaluation method is suitable for dual-medium corrosion of corrosion components in coastal industrial atmosphere and high-temperature and low-temperature oiled products, the evaluation index can be provided, and the reference can be provided for material selection.
3. By the implementation of the components and the corrosion evaluation method, the product of the invention has excellent mechanical and corrosion resistance, such as R less than or equal to 395MPa el ≤415MPa、525MPa≤R m A is more than or equal to 555MPa and more than or equal to 35.0% and less than or equal to 38.0%; 370MPa of steel plate at 100 ℃ is less than or equal to R p0.2 R is not less than 405MPa and 240MPa of steel plate at 350 DEG C p0.2 No crack on the cold-bent surface (0 ℃) KV with D=2a and 180 DEG in the transverse direction and 285MPa or less 2 More than or equal to 310J, HBW and less than or equal to 165, A+B+C+D and less than or equal to 1.0, the grain size range is less than or equal to 1.0, and the banded segregation is 0 level. H-resistant inner wall of steel pipe 2 S、Cl - Corrosion of single acid medium or mixed medium, and high CI resistance of outer wall - 、SO 2 Corrosion resistance to atmospheric agents in coastal industries. CSR expressed as 100℃HIC is 0% and CSR expressed as 350℃HIC is 0%; the SSCC sample loaded for 4320h at the pressure of 4MPa at 100 ℃ is not broken, and the SSCC sample loaded for 2160h at the pressure of 4MPa at 350 ℃ is not broken; the corrosion rate of the steel for the refining pipeline in the marine atmospheric environment is less than or equal to 2.0mm/a.
Drawings
FIG. 1 is a schematic view of the H-based refined pipeline steel of the present invention 2 S concentration-HCl concentration corrosion rate evaluation chart;
FIG. 2 is a schematic view of the H-based refining of the pipe steel according to the invention 2 Stress corrosion failure boundary plot of S concentration versus HCl concentration.
Detailed Description
The invention discloses steel for a pipeline refined in a coastal atmosphere environment and a corrosion evaluation method thereof. Those skilled in the art can, with the benefit of this disclosure, suitably modify the process parameters to achieve this. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and are deemed to be included in the present invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that variations and modifications can be made in the methods and applications described herein, and in the practice and application of the techniques of this invention, without departing from the spirit or scope of the invention.
The steel for the coastal atmospheric environment refined pipeline consists of the following chemical components in percentage by weight:
0.02 to 0.06 percent of C, 0.10 to 0.30 percent of Si, 0.40 to 0.90 percent of Mn, less than or equal to 0.008 percent of P, less than or equal to 0.002 percent of S, 1.0 to 1.5 percent of Ni, 0.40 to 0.80 percent of Cu, 0.010 to 0.015 percent of Ce, 0.50 to 1.00 percent of Alt, wherein Mn+Cu=1.00 to 1.60 percent, and the balance of Fe and unavoidable impurities.
The reasons for the limited amounts of each chemical element in the C, si, mn, P, S, ni, cu, ce, alt steel sheet are described in detail below:
c: the method is an important and cheap strengthening element, a certain amount of C is added to ensure the matrix strength of the pipeline steel, but the excessive carbon content increases the segregation tendency of carbide, so that the hardness of a segregation zone is different from that of surrounding tissues, the HIC resistance of the steel is reduced, and the excessive carbon content is unfavorable for the welding performance of the pipeline and the corrosion resistance of a welding seam, so that the C content range is set to be 0.02-0.06%.
Mn: a certain amount of Mn plays a role of solid solution strengthening the pipe matrix, but segregation caused by excessive Mn easily generates high-strength and low-toughness microscopic metallographic structures such as martensite and bainite in weld joints and heat affected zones, shows extremely high hardness, increases cracking tendency of the post-weld structure, and is extremely unfavorable for SSC resistance of the pipe, so that the upper limit of Mn needs to be controlled, and therefore, the Mn content range is set to 0.40% -0.90% in the invention.
Si: in addition, when the silicon content is more than 1%, a compact silicon dioxide protective film can be formed, and the corrosion resistance is improved. However, when the content of Si element is higher, the hardness of the weld joint and the heat affected zone is higher, meanwhile, the Si element is easy to segregate at the grain boundaries, thereby promoting the formation of inter-crystal cracks and increasing the corrosion risk of the pipeline, so the Si content range is set to be 0.10-0.30%.
P: the segregation is easy to occur at the austenitic grain boundary, so that the interatomic bonding force on the grain boundary of the matrix material is weakened, and the tempering brittleness of the material is large, so that the content range of P is set to be less than or equal to 0.008 percent.
S: the strip-shaped distribution of MnS and FeS nonmetallic inclusion are formed in the steel, so that the local microstructure is loose, and the sensitivity of HIC or SOHIC in a wet hydrogen sulfide environment is increased, so that the S content range is set to be less than or equal to 0.002 percent.
Ni: the Ni with a certain content can enable the self-corrosion potential of the steel exposed to the ocean atmosphere to move forward, and the stability of the matrix is improved. Meanwhile, ni can be enriched in the rust layer, refine the crystal grains of the rust layer and increaseIts compactness. In addition, ni can promote the formation of nano-scale and superparamagnetic alpha-FeOOH in the inner rust layer, and can prevent chloride ions in humid ocean atmosphere from penetrating, so that the rust layer is protective. However, since Ni steel has a low hydrogen evolution potential, hydrogen ions are easily reduced by discharge to promote the precipitation of free hydrogen, thereby reducing the steel in wet H 2 S resistance to corrosive environments, thus wet H 2 The Ni content of the steel in S environment should not be too high. Therefore, the Ni content range is set to be 1.0% -1.5% in the invention.
Cu: cu can accelerate the recombination speed of hydrogen atoms, thereby reducing the activity of hydrogen and improving the corrosion resistance of the material in an acidic medium. In particular saturated wet H 2 S environment, feS can be formed in steel with copper content more than 0.4% 1-x And a black protective layer of Cu, which reduces corrosion rate and hydrogen absorption rate, wherein Cu has both inner HCl and H resistance 2 S、H 2 The corrosion of the medium and the chlorine ion corrosion of the coastal environment are prevented, but too much Cu can reduce the toughness of the steel, so the Cu content range is set to be 0.40-0.80 percent.
The invention has more remarkable marine industrial atmospheric corrosion resistance effect when the Cu and Mn composite addition reaches more than 1 percent, and CuFeO is arranged in the Cu-Mn rust layer 2 And Mn of 3 O 4 The oxide in the form of the Mn+Cu alloy can well fill cracks and holes, so that the rust layer is more compact, thereby preventing chloride ions from penetrating into a matrix and improving corrosion resistance, and therefore, the Mn+Cu alloy is limited to be 1.00-1.60%.
Ce: the rare earth has stronger affinity with harmful elements such as oxygen, sulfur, phosphorus, hydrogen, nitrogen and the like in the molten steel, and after forming a stable rare earth compound, the self density of the rare earth compound is smaller than that of the molten steel, and the rare earth compound floats upwards to form slag, thereby playing a role in purifying the molten steel. In addition, by controlling the form of the inclusions, the elongated manganese sulfide inclusions are changed into spherical sulfides or oxides, so that the form of the sulfides is completely controlled, and the variability of the steel is improved. Rare earth has certain solid solubility in steel, and the segregation of sulfur, phosphorus and other low-melting-point inclusions at the grain boundary can be inhibited by the rare earth at the grain boundary, and high-melting-point compounds are formed with the inclusions, thereby reducing the harmful influence of the low-melting-point inclusions,reduce the formation and expansion tendency of inter-crystal cracks and improve the high-temperature plasticity and corrosion resistance of the steel. The microalloying effect of Ce element is mainly reflected in the interaction of rare earth and other elements at the grain boundary, so that the change of grain boundary structure, chemical composition and energy is caused, and meanwhile, the diffusion of other elements and the quantity and growth speed of nucleation number of new phase are influenced to a certain extent, so that the structure and performance of steel are changed. In addition, the rare earth has the function of hydrogen capture, so that the hydrogen-induced delayed fracture performance of the steel is improved, and the corrosion resistance of the steel is improved. Dispersion hardening, blowing rare earth oxide (CeO) into steel 2 ) The powder can improve the comprehensive mechanical property of steel and reduce the brittle transition temperature. CeO (CeO) 2 Can be used as crystallization nucleus to provide landing points, the number of nucleation is increased, crystal grains are arranged, and CeO is dispersed and distributed 2 Particles can increase the barrier effect of grain boundaries on dislocation motion. However, ce belongs to rare earth strategic resources and is not suitable for excessive addition, so the content range of Ce is set to be 0.010-0.015 percent.
Al: aluminum mainly plays a role in deoxidizing and refining grains in steel. In addition, when the aluminum content reaches a certain value, the surface of the steel is passivated, so that the steel has corrosion resistance in oxidizing acid and improves the corrosion resistance to hydrogen sulfide, but excessive aluminum can promote the graphitization tendency of the steel when used for a long time at medium and high temperature. Therefore, the Alt content range is set to be 0.50% -1.00%.
The method for evaluating corrosion of steel for the pipeline in the coastal atmospheric environment comprises the following steps:
1. determining the corrosion environment conditions and experimental parameters of the inner wall and the outer wall;
the indoor corrosion experiment of the pipeline steel refined in the inner wall and outer wall corrosion environment is realized by the following steps:
1) According to the service environment of the steel for the pipeline refined in the coastal atmospheric environment, the inner wall environment simulates sulfide and Cl-containing environment - The high and low temperature oiled products of the (a) corrode the environment. The main component of the simulated corrosion solution is 0.05% -2% HCl,100×10 -6 ～2000×10 -6 H 2 S concentration. Simulation of H in solution 2 S concentration is achieved by adding Na to the HCl solution of the target concentration 2 S reverseH should be generated 2 S is obtained, H in the simulated solution is determined by adopting a titration method 2 S concentration. The simulated solution is introduced into a reaction kettle, and the pH range of the solution is adjusted to 3.0-6.0 on the basis of ensuring the same temperature and pressure as those of the service environment. Test temperature: the low-temperature service temperature T of the refining pipeline is less than or equal to 240 ℃, and the high-temperature service temperature T is more than 240 ℃ and less than or equal to 425 ℃. The total pressure is 0.1MPa to 4MPa. The hydrogen induced cracking test time is more than 72 hours; the stress corrosion test is 720h or more.
2) The outer wall of the refined pipeline steel simulates the coastal industrial atmospheric corrosion environment. The main components of the simulated corrosion solution are 0.05 to 0.5 percent of NaCl and 0.l to 1.0 percent of NaHSO 3 The experimental time was 240h.
The corrosion environment of the inner wall and the outer wall is selected to be in accordance with the steel service environment for the coastal atmospheric environment refining pipeline.
2. And carrying out a hydrogen induced cracking experiment, a stress corrosion experiment and a soaking experiment according to the standard in an environment of the simulated corrosion solution. Performing a hydrogen induced cracking test according to the GBT 8650-2006 method; stress corrosion tests were performed according to GBT4157-2017 method; the TB/T2375-93 method was used for the peri-immersion test.
3. And determining corrosion evaluation boundary conditions, and establishing a corrosion evaluation system and a stress corrosion system.
The corrosion performance evaluation method of the refined pipeline steel comprises the following steps:
the principle that local corrosion preferentially gives consideration to comprehensive corrosion is maintained. And establishing a corrosion rate evaluation system and a stress corrosion boundary system. And (3) evaluating the hydrogen induced cracking sensitivity, sulfide stress corrosion sensitivity and comprehensive corrosion performance of the refined pipeline steel by using the established environmental corrosion evaluation system, and judging whether the material is suitable for the service environment.
4. And evaluating the applicability of the refined pipeline steel according to the indexes.
Evaluation index:
(1) the corrosion rate is less than 2.0mm/a, the hydrogen induced cracking and stress corrosion are avoided, and the refined pipeline steel is considered to be suitable for the inner and outer wall corrosion environment;
(2) the corrosion rate is more than 2.0mm/a, the hydrogen induced cracking and stress corrosion are avoided, and the refined pipeline steel is not suitable for the inner and outer wall corrosion environment;
(3) the corrosion rate is less than 2.0mm/a, hydrogen induced cracking or stress corrosion occurs, and the refined pipeline steel is considered to be suitable for the inner and outer wall corrosion environment.
The evaluation index is suitable for the steel for the pipeline in the coastal atmospheric environment.
[ example ]
The examples are provided to illustrate the present invention in detail, and are merely a general description of the present invention and are not intended to limit the present invention.
Table 1 the chemical composition of examples, the texture property final effect of examples of table 2, and the nonmetallic inclusion evaluation results of examples of table 3.
TABLE 1 example chemical composition (wt.%)
Table 2 example organization performance end effects
TABLE 3 evaluation results of nonmetallic inclusion in examples
The method for testing corrosion of the inner wall and the outer wall of the refined pipeline steel comprises the following specific implementation steps:
1. the corrosion simulation solution for the inner wall of the refined pipeline steel comprises 0.05 to 2 percent of HCl and 100 multiplied by 10 -6 ～2000×10 - 6 H 2 The concentration of S is such that,
the pH of the solution is regulated to 3.0-6.0 by 0.1mol/L NaOH.
The experiment was carried out using an autoclave.
The experimental temperatures were 100℃and 350 ℃. Wherein the temperature of 100 ℃ simulates the low-temperature service (less than or equal to 240 ℃) of the refining pipeline; the temperature of the simulated refining pipeline is Wen Fuyi (T is more than 240 ℃ and less than or equal to 425 ℃) at 350 ℃ and the total pressure is 4MPa.
Hydrogen induced cracking is carried out according to the GBT 8650-2006 experimental method; stress corrosion experiments were performed according to GBT 4157-2017E method-four point bending.
The hydrogen induced cracking experiment time is 72 hours; and the stress corrosion test time is 720h.
2. The main components of the corrosion solution for the outer wall of the refined pipeline steel are 0.5 to 5 percent of NaCl and 0.1 to 1.5 percent of NaHSO 3 。
The peri-immersion test was performed according to the TB/T2375-93 protocol.
Week-leaching experimental parameters: soaking time is 12min, and drying time is 48min; the temperature of the solution is 45 ℃, and the relative humidity is 40-80% RH.
The experimental time was 240h.
Table 4 shows the results of the 100 ℃ hydrogen induced cracking test of the example steel, the 350 ℃ hydrogen induced cracking test of the example steel of Table 5, the 100 ℃ stress corrosion test of the example steel of Table 6, the 350 ℃ stress corrosion test of the example steel of Table 7, and the simulated coastal atmosphere corrosion rate of the example steel of Table 8.
Table 4 example steel results of 100 ℃ hydrogen induced cracking experiments
Table 5 example steel results of 350 c hydrogen induced cracking experiments
TABLE 6 results of stress corrosion experiments at 100℃for example steels
Table 7 example steel test results of 350 c medium pressure stress corrosion test
| Examples | Test results |
| 1 | Unbroken |
| 2 | Unbroken |
| 3 | Unbroken |
| 4 | Unbroken |
| 5 | Unbroken |
| 6 | Unbroken |
| 7 | Unbroken |
| 8 | Unbroken |
| 9 | Unbroken |
| 10 | Unbroken |
Table 8 example steel mold simulated coastal industrial atmospheric environmental corrosion rates
The concrete implementation steps of the corrosion performance evaluation method for the refined pipeline steel are as follows:
the evaluation method comprises a corrosion rate evaluation system and a stress corrosion cracking boundary system. The corrosion rate evaluation system and the stress corrosion cracking boundary system are obtained by summarizing a large amount of data obtained by testing the steel for the refined pipeline according to the invention by the corrosion experimental method according to the invention and the data existing in the literature. The corrosion rate evaluation system can provide a corrosion rate credible range of the steel for the refined pipeline in a corrosion environment, so as to evaluate the applicability of the steel for the refined pipeline in an outer wall environment; stress corrosion cracking boundary system is based on HCl concentration and H 2 And classifying stress corrosion cracking behaviors of the refined pipeline steel in the inner wall environment by the change of the S concentration, and determining failure boundary conditions of the stress corrosion cracking, thereby evaluating the stress corrosion safety of the service of the refined pipeline steel in the inner wall environment. Table 9 example steel corrosion in the coastal industrial atmospheric environmentAnd (5) evaluating the corrosion performance.
Table 9 evaluation of corrosion properties of example steels in the atmospheric environment of coastal gauge industry
According to the results, the steel for the corrosion-resistant refining pipeline, which is applicable to the coastal environment, is 395 MPa-415 MPa, 525 MPa-555 MPa and 35.0-38.0% A; 370 MPa-405 MPa of steel plate at 100 ℃ and 240 MPa-285.2 of steel plate at 350 ℃; the (0 ℃) KV2 is more than or equal to 310 and less than or equal to J, HBW and is less than or equal to 175, the transverse 180 DEG is realized, the surface of the cold-bent steel sheet with D=2a is free from cracks, the A+B+C+D is less than or equal to 1.5, the crystal grain size range is less than or equal to 1.0, and the banded segregation is of 0 grade. The corrosion performance is evaluated according to the corrosion evaluation index, and as a result, the example steel is applicable to petroleum refining environments and coastal industrial atmospheric environments.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
1. A corrosion evaluation method for steel for a pipeline in coastal atmosphere refining is characterized in that,
the steel for the coastal atmospheric environment refining pipeline comprises the following chemical components in percentage by weight:
0.02% -0.06% of C, 0.10% -0.30% of Si, 0.40% -0.90% of Mn, less than or equal to 0.008% of P, less than or equal to 0.002% of S, 1.0% -1.5% of Ni, 0.40% -0.80% of Cu, 0.010% -0.015% of Ce and 0.50% -1.00% of Alt, wherein Mn+Cu=1.00% -1.60%, and the balance of Fe and unavoidable impurities;
the method comprises the following steps:
1) Determining the corrosion environment conditions and experimental parameters of the inner wall and the outer wall;
(1) sulfide and Cl contained in inner wall environment simulation of refined pipeline steel - High and low temperature oiling of (2)Corroding the product;
the simulated corrosion solution comprises 0.05% -2% HCl and 100×10 -6 ~2000×10 -6 H 2 S, S; simulation of H in solution 2 S concentration is achieved by adding Na to the HCl solution of the target concentration 2 S reacts to generate H 2 S is obtained, H in the simulated solution is determined by adopting a titration method 2 S concentration;
introducing the simulation solution into a reaction kettle, and adjusting the pH range of the solution to 3.0-6.0 on the basis of ensuring the same temperature and pressure as those of the service environment;
the simulated refining pipeline low-temperature service temperature T is less than or equal to 240 ℃; t is more than 240 ℃ and less than or equal to 425 ℃ in high-temperature service;
the total pressure is 0.1-4 MPa;
the hydrogen induced cracking test time is more than 72 hours; the stress corrosion test is 720 hours or more;
(2) the outer wall of the refined pipeline steel simulates the coastal industrial atmospheric corrosion environment;
the simulated corrosion solution comprises 0.05% -0.5% NaCl and 0.l% -1.0% NaHSO 3 Experiment time is 240h;
2) Performing a hydrogen induced cracking test according to the GBT 8650-2006 method in a simulated corrosion solution environment; stress corrosion tests were performed according to GBT4157-2017 method; performing a week leaching test by using a TB/T2375-93 method;
3) Establishing a corrosion rate evaluation system and a stress corrosion boundary system by taking the principle that local corrosion preferentially takes full consideration of comprehensive corrosion into account, and evaluating the hydrogen induced cracking sensitivity, sulfide stress corrosion sensitivity and comprehensive corrosion performance of the refined pipeline steel by utilizing the established environmental corrosion evaluation system to judge whether the material is suitable for a service environment;
4) Evaluating applicability of refined pipeline steel according to indexes
Evaluation index:
(1) the corrosion rate is less than 2.0mm/a, the hydrogen induced cracking and stress corrosion are avoided, and the refined pipeline steel is considered to be suitable for the inner and outer wall corrosion environment;
(2) the corrosion rate is more than 2.0mm/a, the hydrogen induced cracking and stress corrosion are avoided, and the refined pipeline steel is not suitable for the inner and outer wall corrosion environment;
(3) the corrosion rate is less than 2.0mm/a, hydrogen induced cracking or stress corrosion occurs, and the refined pipeline steel is considered to be suitable for the inner and outer wall corrosion environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211421213.2A CN115679218B (en) | 2022-11-14 | 2022-11-14 | Steel for coastal atmospheric environment refining pipeline and corrosion evaluation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211421213.2A CN115679218B (en) | 2022-11-14 | 2022-11-14 | Steel for coastal atmospheric environment refining pipeline and corrosion evaluation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115679218A CN115679218A (en) | 2023-02-03 |
| CN115679218B true CN115679218B (en) | 2023-11-10 |
Family
ID=85051637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211421213.2A Active CN115679218B (en) | 2022-11-14 | 2022-11-14 | Steel for coastal atmospheric environment refining pipeline and corrosion evaluation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115679218B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717214B (en) * | 2022-11-14 | 2023-07-14 | 鞍钢股份有限公司 | Steel for coastal atmospheric environment refining pipeline and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009120957A (en) * | 2002-06-19 | 2009-06-04 | Nippon Steel Corp | Steel for crude oil tank, production method thereof, crude oil tank and method for preventing corrosion thereof |
| CN103592214A (en) * | 2013-11-08 | 2014-02-19 | 国家电网公司 | Method for evaluating corrosion state of carbon steel material in atmospheric environment |
| CN104251812A (en) * | 2013-06-27 | 2014-12-31 | 中国石油化工股份有限公司 | High-acidity gas field wellbore string material optimization evaluation system and method |
| CN105784578A (en) * | 2016-03-22 | 2016-07-20 | 全球能源互联网研究院 | Detection method for simulating accelerated corrosion of metal material in atmospheric environment |
| CN109557017A (en) * | 2018-11-15 | 2019-04-02 | 北京科技大学 | Tropical marine atmospheres Environmental Concrete structural steel muscle corrosion resistance experimental method |
| CN111809121A (en) * | 2020-06-12 | 2020-10-23 | 中国科学院金属研究所 | Structural function integrated pipeline steel and manufacturing method thereof |
| CN112394025A (en) * | 2020-12-07 | 2021-02-23 | 国网福建省电力有限公司 | Rapid evaluation method for performance of weather-resistant steel rust layer for transmission tower in industrial atmospheric environment |
| CN112394024A (en) * | 2020-12-07 | 2021-02-23 | 国网福建省电力有限公司 | Rapid evaluation method for performance of weather-resistant steel rust layer for transmission tower in coastal atmospheric environment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4596947B2 (en) * | 2005-03-25 | 2010-12-15 | 財団法人石油産業活性化センター | Method for evaluating corrosion resistance of materials under ammonium hydrosulfide environment |
-
2022
- 2022-11-14 CN CN202211421213.2A patent/CN115679218B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009120957A (en) * | 2002-06-19 | 2009-06-04 | Nippon Steel Corp | Steel for crude oil tank, production method thereof, crude oil tank and method for preventing corrosion thereof |
| CN104251812A (en) * | 2013-06-27 | 2014-12-31 | 中国石油化工股份有限公司 | High-acidity gas field wellbore string material optimization evaluation system and method |
| CN103592214A (en) * | 2013-11-08 | 2014-02-19 | 国家电网公司 | Method for evaluating corrosion state of carbon steel material in atmospheric environment |
| CN105784578A (en) * | 2016-03-22 | 2016-07-20 | 全球能源互联网研究院 | Detection method for simulating accelerated corrosion of metal material in atmospheric environment |
| CN109557017A (en) * | 2018-11-15 | 2019-04-02 | 北京科技大学 | Tropical marine atmospheres Environmental Concrete structural steel muscle corrosion resistance experimental method |
| CN111809121A (en) * | 2020-06-12 | 2020-10-23 | 中国科学院金属研究所 | Structural function integrated pipeline steel and manufacturing method thereof |
| CN112394025A (en) * | 2020-12-07 | 2021-02-23 | 国网福建省电力有限公司 | Rapid evaluation method for performance of weather-resistant steel rust layer for transmission tower in industrial atmospheric environment |
| CN112394024A (en) * | 2020-12-07 | 2021-02-23 | 国网福建省电力有限公司 | Rapid evaluation method for performance of weather-resistant steel rust layer for transmission tower in coastal atmospheric environment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115679218A (en) | 2023-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Schweitzer | Metallic materials: physical, mechanical, and corrosion properties | |
| Cheng | Stress corrosion cracking of pipelines | |
| CN100360696C (en) | Steel for crude oil tank and method for manufacture thereof, crude oil tank and method for protecting corrosion thereof | |
| Elboujdaini | Hydrogen-induced cracking and sulfide stress cracking | |
| Zheng et al. | Effect of hydrogen and inclusions on the tensile properties and fracture behaviour of A350LF2 steels after exposure to wet H2S environments | |
| Wu et al. | Corrosion and SCC initiation behavior of low-alloy high-strength steels microalloyed with Nb and Sb in a simulated polluted marine atmosphere | |
| CN102492897A (en) | Steel for lower plate of cargo oil tank of tanker | |
| CN115679218B (en) | Steel for coastal atmospheric environment refining pipeline and corrosion evaluation method thereof | |
| Benmoussat et al. | Corrosion behavior of low carbon line pipe steel in soil environment | |
| Sofia Hazarabedian et al. | Hydrogen-induced stress cracking of swaged super duplex stainless steel subsea components | |
| Davydov et al. | Specificity to the choice of materials for wellhead equipment | |
| Huang et al. | Sulfide stress cracking resistance of the welded WDL690D HSLA steel in H2S environment | |
| Daniel et al. | Atmospheric corrosion performance of structural steel bolts in the Wenchang marine environment, South China | |
| Kah et al. | Influence of alloying elements on the low-temperature properties of steel | |
| CN115717214B (en) | Steel for coastal atmospheric environment refining pipeline and preparation method thereof | |
| Grajcar et al. | Corrosion behaviour of plastically deformed high-Mn austenitic steels | |
| Meryanalinda et al. | ANALYSIS OF CORROSION RATE OF ASTM A 387 GRADE 12 AND A 283 GRADE FOR SULFURIC ACID TANK MATERIAL | |
| Stefansson et al. | Performance of High Strength UNS N08830 in Hydrogen Stress Crack Testing to Simulate Conditions Arising from Subsea Cathodic Protection | |
| Bodude et al. | Comparative studies on mechanical and corrosion characteristics of API 5LX60 Steel and RST 37-2 Steel | |
| Ayodele et al. | Investigation of the effects of heat treatment on the corrosion behaviour of welded low carbon steel in different environments | |
| Hagen et al. | Hydrogen Influence on Mechanical Properties in Pipeline Steel-state of the art | |
| Alsarraf | Hydrogen embrittlement susceptibility of super duplex stainless steels | |
| Ogundare et al. | Comparative Study of Corrosion Sensitivity of Selected Ferrous Metals in Crude Oil | |
| Alwaranbi | Chloride pitting corrosion of API X-80 and X-100 high strength low alloy pipeline steels in bicarbonate solutions | |
| Świeczko-Żurek et al. | Evaluation of susceptibility of high-strength steels to hydrogen delayed cracking |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |