CN102308015A - Method for manufacturing metal pipe - Google Patents
Method for manufacturing metal pipe Download PDFInfo
- Publication number
- CN102308015A CN102308015A CN2010800069933A CN201080006993A CN102308015A CN 102308015 A CN102308015 A CN 102308015A CN 2010800069933 A CN2010800069933 A CN 2010800069933A CN 201080006993 A CN201080006993 A CN 201080006993A CN 102308015 A CN102308015 A CN 102308015A
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- China
- Prior art keywords
- metal tube
- amount
- metal pipe
- internal surface
- situation
- 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
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 100
- 239000002184 metal Substances 0.000 title claims abstract description 100
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 238000000034 method Methods 0.000 title abstract description 25
- 230000003647 oxidation Effects 0.000 claims description 46
- 238000007254 oxidation reaction Methods 0.000 claims description 46
- 239000000126 substance Substances 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 238000007669 thermal treatment Methods 0.000 claims description 10
- 239000004615 ingredient Substances 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 238000005255 carburizing Methods 0.000 abstract description 30
- 238000004939 coking Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 30
- 239000007789 gas Substances 0.000 description 22
- 230000000694 effects Effects 0.000 description 19
- 238000012360 testing method Methods 0.000 description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 239000000463 material Substances 0.000 description 12
- 239000000314 lubricant Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000007769 metal material Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 5
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 5
- 238000005480 shot peening Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000005482 strain hardening Methods 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000005238 degreasing Methods 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
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- -1 cast steel Chemical class 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000005300 metallic glass Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- XZWYZXLIPXDOLR-UHFFFAOYSA-N metformin Chemical compound CN(C)C(=N)NC(N)=N XZWYZXLIPXDOLR-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G75/00—Inhibiting corrosion or fouling in apparatus for treatment or conversion of hydrocarbon oils, in general
-
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- 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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- 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
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/052—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 40%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/053—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 30% but less than 40%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
In this method, the inner surface of a metal pipe containing, by mass percent, 20 to 55% of Cr and 20 to 70% of Ni is subjected to mechanical treatment, the metal pipe is subjected to heat treatment such as to be held in a temperature range of 1050 to 1270 DEG C. for 0.5 to 60 minutes, and thereby an oxide scale layer consisting mainly of Cr is formed on at least the inner surface of the metal pipe. A metal pipe excellent in carburization resistance and coking resistance in a carburizing gas environment can be obtained by the method.
Description
Technical field
The present invention relates to a kind of production method of metal pipe that has the oxidation cortex at least at internal surface.In particular, the present invention relates to that a kind of hot strength is higher, the production method of metal pipe of excellent corrosion resistance.Decomposition boiler tube in the pipe that the metal tube that utilizes the present invention to obtain is suitable in the carburizing property gas atmosphere that contains hydrocarbon gas, CO gas etc., using, for example petroleum refining, petrochemical equipment etc., modification boiler tube, furnace tubing, heat exchanger tube etc.
Background technology
In recent years, for example at petroleum refining, petrochemical equipment etc., containing the metal tube of the Ni that can adopt the Cr that contains 20 quality %～35 quality % and 20 quality %～70 quality % in the decomposition boiler tube that uses in the carburizing property gas atmosphere of hydrocarbon gas, CO gas etc., modification boiler tube, furnace tubing, heat exchanger tube etc.Its reason is, the hot strength of this metal tube and excellent corrosion resistance.
The internal surface of metal tube exposes to the open air in carburizing property atmosphere.Therefore, in order to prevent carburizing, be preferably formed the oxidation cortex of Cr main body at the internal surface of metal tube.The density of the oxidation cortex of Cr main body is higher, has to block the effect that carbon enters into metal tube.The oxidation cortex of Cr main body is less for the katalysis of carbon deposit (accumulation of carbon).Therefore, also have the effect of inhibition to metal tube surface carbon deposit.As a result, can keep fluidic thermal conductivity in importing to metal tube for a long time.Thereby, for example this metal tube being used as under the situation of decomposition reaction pipe, the yield rate of resultant of reaction such as alkene is stable.The oxidation cortex of this Cr main body also can form under the environment that uses metal tube.But, as stated,, therefore, be difficult in the oxidation cortex that metal pipe internal surface is formed uniformly the Cr main body because carbon enters into metal tube simultaneously.Therefore, it is very effective to be pre-formed the method for oxidation cortex of Cr main body at metal pipe internal surface.
In patent documentation 1, disclose such method; Promptly; When under the High Temperature High Pressure water surrounding, using the stainless steel tube of the Cr contain 12 quality %～20 quality % and the Ni below the 40 quality %; In order to prevent that Ni is from the steel pipe stripping; In advance under the inert gas atmosphere of the oxygen that contains 0.01 volume %～0.5 volume %; Enforcement is heated to 800 ℃～1100 ℃ and keep 2 minutes～20 minutes thermal treatment, forms the oxidation cortex in steel tube surface.In patent documentation 2, also disclose such invention; Promptly; Through being more than the 150ppm and, prevent that the oxide skin that is caused by the abnormal oxidation on steel surface is uneven more than 1100 ℃ the austenite stainless steel that contains the Cr below the 14 quality % is heat-treated with the management of the CO concentration in cylinder (barrel) stove.
In patent documentation 3; As the stainless steel that in carburizing property gas atmosphere, uses; Also disclose and relate to a kind of so stainless invention, this stainless steel has Cr and lacks Cr concentration in the layer and be more than 10% quality, or also have the oxidation cortex that the Cr amount is the Cr main body more than 50% quality in its outside on the mother metal surface of the Cr that contains 20 quality %～55 quality %.
In patent documentation 4; Method of manufacture about the good ethene decomposition boiler tube of anti-carbon deposit property; Also disclose such invention; Promptly; Pipe to the Ni of the Cr that contains 15 quality %～30 quality % and 15 quality %～50 quality % is implemented apart from the cold working of the surface 50 μ m degree of depth at least, and then will manage at oxygen is to be heated to more than 1100 ℃ in the atmosphere more than the 20vol% less than 5vol% and nitrogen.
Patent documentation 1: japanese kokai publication hei 2-47249 communique
Patent documentation 2: japanese kokai publication hei 3-197617 communique
Patent documentation 3: TOHKEMY 2005-48284 communique
Patent documentation 4: japanese kokai publication hei 2-263895 communique
In patent documentation 1 and 2 described inventions, the Cr amount is few below 20 quality %, therefore, is difficult to form the oxidation cortex of Cr main body.
Patent documentation 3 is described, and to have the stainless anti-carburizing property and the anti-carbon deposit property of oxidation cortex good.But, in the manufacturing processed of reality, be difficult in the whole zone of pipe internal surface, be formed uniformly the oxidation cortex of Cr main body.
In patent documentation 4 described inventions; Utilize cold working and nitrogen osmotic heat to handle; To make the grain refined layer more than the No.7 up to the austinite grain size of at least 30 μ m degree of depth, and can improve the Cr that under 750 ℃～1100 ℃ actual job condition, in use generates apart from the top layer
2O
3The stability of oxide film thereon.In the method, remove the oxide skin that in the nitrogen osmotic heat is handled, generates, in actual job, on the grain refined layer, be formed with stable Cr
2O
3Oxide film thereon.But in actual job, forming oxide film thereon needs for a long time.Thereby, in the method, carburizing or carbon deposit might take place before forming stable oxide film thereon.
Summary of the invention
The present invention for solve this in the past the problem points of technology make, its purpose is to provide a kind of the manufacturing for carburizing or carbon deposit from carburizing property gas through the oxidation cortex that on metal pipe internal surface, forms uniform Cr main body to have the method for the metal tube of good patience.
The inventor furthers investigate the method that is used for being formed uniformly in the whole zone of metal pipe internal surface the oxidation cortex of the Cr main body with anti-carburizing property and anti-carbon deposit property; As a result, drawn following opinion to the reason and the method that prevents thereof that form inhomogeneous oxide skin.
(A), utilize opticmicroscope and SEM (scanning electron microscope for the oxidation cortex that is formed on metal pipe internal surface; Scanning Electron Microscope) carried out observation, (the energy dispersion type X ray beam split that utilizes EDX; Energy Dispersive X-ray spectrometry) the various researchs such as quantitative analysis of element have been carried out.As a result, one in basic metal and the alkaline-earth metal or both have been detected on the surface of uneven oxide skin.
(B) according to the inventor's result of study, can clear and definite these elements lubricant during from cold working, the lubricant that remains in the metal tube surface is the reason of formation that hinders the oxidation cortex of Cr main body.
(C) after cold working, carry out degreasing, cleaning etc., attempt removing lubricant attached to pipe internal surface.But in these methods, the situation of lubricant can't be fully removed in existence in the metal tube total length.Therefore, the method for removing lubricant various tests have been carried out.The result can know, through metal pipe internal surface being implemented spray the mechanical treatment of (blast) etc., can on the total length of metal tube, remove the lubricant of its internal surface equably.
The present invention promptly is based on this opinion and makes, and its purport is the production method of metal pipe shown in following (1)～(4).
(1) a kind of production method of metal pipe; Wherein, The metal pipe internal surface of the Ni that contains 20%～55% Cr and 20%～70% in quality % has been implemented after the mechanical treatment; Be implemented in 1050 ℃～1270 ℃ the interior thermal treatment that keeps 0.5 minute～60 minutes of temperature range, form the oxidation cortex of Cr main body at the internal surface at least of metal tube.
(2) in the production method of metal pipe of above-mentioned (1); Above-mentioned metal tube has following chemical ingredients; Promptly; In quality % contain C:0.01%～0.6%, Si:0.1%～5%, Mn:0.1%～10%, below the P:0.08%, below the S:0.05%, Cr:20%～55%, Ni:20%～70%, N:0.001%～0.25% and O (oxygen): below 0.02%, rest part is made up of Fe and impurity.
(3) in the production method of metal pipe of above-mentioned (2), above-mentioned metal tube also has more than one that from the element shown in following (a)～(g), select in quality %.
(a) below the Cu:5%;
(b) below the Co:5%;
(c) below Mo:3%, below the W:6% and below the Ta:6% more than one of selection;
(d) selection a kind of or two kinds below Ti:1% and below the Nb:2%;
(e) below B:0.1%, below the Zr:0.1% and below the Hf:0.5% more than one of selection;
(f) below Mg:0.1%, below the Ca:0.1% and below the Al:1% more than one of selection;
(g) below Y:0.15%, reach Ln family: more than one that select below 0.15%.
(4) in above-mentioned (1)～(3) in each the production method of metal pipe, above-mentioned metal tube has the projection of rib shape at pipe internal surface.
Adopt the present invention, can be manufactured on the metal tube that metal pipe internal surface has the oxidation cortex of Cr main body equably.Anti-carburizing property and the anti-carbon deposit property of metal tube in carburizing property atmosphere surrounding of utilizing method of manufacture of the present invention to obtain is good.
Embodiment
The present invention is after implementing mechanical treatment to the internal surface of metal tube with specified chemical composition; Be implemented in 1050 ℃～1270 ℃ the interior thermal treatment that keeps 0.5 minute～60 minutes of temperature range, thereby form the oxidation cortex of Cr main body at the internal surface at least of metal tube.Below, the chemical ingredients of the metal tube that method of manufacture of the present invention provided and mechanical treatment and the thermal treatment that metal tube is implemented are described.In following explanation, the meaning of " % " expression " quality % " of the amount of each element.
1. the chemical ingredients of metal tube
The metal tube that method of manufacture of the present invention provided need contain 20%～55% Cr and 20%～70% Ni.
Cr：20％～55％
Cr need contain more than 20%.Its reason is, stably forms the oxidation cortex of Cr main body at the internal surface at least of metal tube.But, excessively containing sometimes, be difficult to make metal tube, and, might cause tissue unstable in the use at high temperature, therefore, on be limited to 55%.In order to ensure processibility and prevent the structure stability deterioration, the upper limit is preferably 35%.Preferred scope is 22%～33%.
Ni：20％～70％
Ni is in order to obtain the required element of stable austenite structure.Ni and Cr amount correspondingly contain in right amount.Ni has the effect that reduces the admission velocity of carbon in metallic substance.These effects can be to bring into play under the situation more than 20% at its amount.But,, manufacturing cost is risen even the excessive interpolation Ni of these effects also can be saturated.Excessive N i makes the manufacturing of pipe become difficulty.Thereby the Ni amount is 20%～70%.Preferred be limited to 23% down, be limited to 60% on preferably.Be limited to 50% on preferred.
As the raw material of ethene manufacturing, preferably contain Cr:20%～35% and Ni:20%～60% with metal tube (ethylene cracker pipe).
The metal tube that method of manufacture of the present invention provided has above-mentioned chemical ingredients; Other composition does not have special restriction; But for example preferably has such chemical ingredients; Promptly; Contain that C:0.01%～0.6%, Si:0.1%～5%, Mn:0.1%～10%, P:0.08% are following, S:0.05% is following, Cr:20%～55%, Ni:20%～70%, N:0.001%～0.25% and O (oxygen): below 0.02%, rest part is made up of Fe and impurity.Below, the qualification reason of each element is described.
The meaning of impurity is meant, the composition of sneaking into from ore, waste material etc. when in industry, making metal tube, and can not produce the material that dysgenic range content is permitted to the present invention.
C：0.01％～0.6％
C is the element that helps to guarantee hot strength.It is remarkable that this effect becomes under the situation that contains the C more than 0.01%.On the other hand, greater than 0.6% o'clock, might cause the extreme variation of toughness at its amount.Thereby the amount of C is preferably 0.01%～0.6%.Be limited to 0.02% under preferred.Be limited to 0.45% on preferred.Be limited to 0.3% on further preferred.
Si：0.1％～5％
The avidity of Si and oxygen is stronger, therefore, has the effect of the even formation of the oxidation cortex that helps the Cr main body.It is remarkable that this effect becomes under situation about containing more than 0.1%.But, greater than 5% o'clock, might cause the weldability deterioration at its amount, organize also unstable.Thereby the amount of Si is preferably 0.1%～5%.Be limited to 3% on preferred, be limited to 2% on preferred.In addition, be limited to 0.3% under preferred.
Mn：0.1％～10％
Mn is the element that helps deoxidation and help to improve processibility.In addition, because Mn is the austenite generting element, therefore, the part of Ni can be replaced as Mn.In order to obtain these effects, preferably contain more than 0.1%.But, contain sometimes excessive, might hinder the formation of the oxidation cortex of Cr main body.Thereby the amount of Mn is preferably 0.1%～10%.Be limited to 5% on preferred, be limited to 2% on preferred.
Below the P:0.08%,
Below the S:0.05%
P and S segregate in the crystal grain boundary, make the hot workability deterioration, therefore preferably do one's utmost to reduce the content of P and S.But because excessive reduction can cause cost to raise, therefore, preferred P is below 0.08%, and S is below 0.05%.More preferably P is below 0.05%, and S is below 0.03%.Further preferred P is below 0.04%, and S is below 0.015%.
N：0.001％～0.25％
N is the element that helps to improve hot strength.Under situation about containing more than 0.001%, this effect is remarkable.But excessive being added with possibly hinder processibility largely.Thereby the N amount is preferably 0.001%～0.25%.Be limited to 0.2% on preferred.
O (oxygen): below 0.02%
Oxygen (O) is the element that exists as impurity.Greater than 0.02% o'clock, precipitated oxide type impurity in large quantities in metallic substance reduced processibility, causes the surface imperfection of managing at the oxygen amount.Thereby the amount of oxygen is preferably below 0.02%.
In above-mentioned metal tube, also can also contain more than one that from the element shown in following (a)～(g), select.
(a) below the Cu:5%
Cu is used to the element that makes austenite mutually stable.Cu also is the element that helps to improve hot strength.Therefore, also can in above-mentioned metal tube, contain Cu.But, under the excessive situation of its amount, might cause hot workability to reduce.Therefore, containing under the situation of Cu, preferably making its amount is below 5%.Be limited to 3% on preferred.It is remarkable that above-mentioned effect becomes under situation about containing more than 0.1%.
(b) below the Co:5%
Co is used to the element that makes austenite mutually stable.As long as contain Co, just can replace the part of Ni.Therefore, also can in above-mentioned metal tube, contain Co.But, under the excessive situation of its amount, might cause hot workability to reduce.Therefore, containing under the situation of Co, preferably making its amount is below 5%.Be limited to 3% on preferred.It is remarkable that above-mentioned effect becomes under situation about containing more than 0.1%.
(c) below Mo:3%, below the W:6% and below the Ta:6% more than one of selection
Mo, W and Ta all are the elements that help solution strengthening, help to improve hot strength.Therefore, also can in above-mentioned metal tube, contain more than one that from these elements, select.But, under the excessive situation of its amount, might make the processibility deterioration, and hinder structure stability.Thereby, containing under more than one the situation of these elements, preferred Mo is 3%, W and Ta are below 6%.The preferred upper limit of these elements is 2.5%.Be limited to 2% on preferred.In addition, for any element, it is remarkable that above-mentioned effect all becomes under situation about containing more than 0.01%.In addition, under the situation that contains these elements compoundly, preferably make its total amount on be limited to 10%.
(d) selection a kind of or two kinds below Ti:1% and below the Nb:2%
Even Ti and Nb contain denier, also has very big effect for improving hot strength, ductility and toughness.Therefore, also can in above-mentioned metal tube, contain from these elements, select a kind of or two kinds.But, when containing these elements, might reduce processibility and weldability excessive.Thereby, containing under the situation of a kind of of these elements or two kinds, preferred Ti is below 1%, Nb is below 2%.In addition, for any element, it is remarkable that above-mentioned effect all becomes under situation about containing more than 0.01%.In addition, under the situation that contains these elements compoundly, preferably make its total amount on be limited to 2%.
(e) below B:0.1%, below the Zr:0.1% and below the Hf:0.5% more than one of selection
B, Zr and Hf all are the elements that help to strengthen crystal boundary, improve hot workability and hot strength characteristic, therefore, also can in above-mentioned metal tube, contain more than one that from these elements, select.But any element all might make the weldability deterioration under the excessive situation of its amount.Thereby, containing under more than one the situation of these elements, the amount of preferred B and Zr is below 0.1%, the amount of Hf is below 0.5%.In addition, for any element, it is remarkable that above-mentioned effect all becomes under situation about containing more than 0.001%.In addition, under the situation that contains these elements compoundly, preferably make its total amount on be limited to 0.3%.
(f) below Mg:0.1%, below the Ca:0.1% and below the Al:1% more than one of selection
Mg, Ca and Al all are the elements that help to improve hot workability.Therefore, also can in above-mentioned metal tube, contain more than one that from these elements, select.But, under the excessive situation of the amount of these elements, might make the weldability deterioration.Thereby, containing under more than one the situation of these elements, the amount of preferred Mg is below 0.1%, and the amount of Ca is below 0.1%, and the amount of Al is below 1%.The preferred upper limit is that Mg and C a are 0.05%, and Al is 0.6%.In addition, above-mentioned effect contains more than 0.001% at Mg and Ca, Al contains and becomes remarkable under the situation more than 0.01%.Preferred lower limit is that Mg and Ca are 0.002%.In addition, under the situation that contains these elements compoundly, preferably make its total amount on be limited to 0.5%.
(g) below Y:0.15%, reach Ln family: more than one that select below 0.15%
Y and Ln family all are the elements that help to improve oxidation-resistance.Therefore, also can in above-mentioned metal tube, contain more than one that from these elements, select.But any element all makes processibility reduce under the excessive situation of its amount.Thereby, containing under more than one the situation of these elements, all preferably making its amount is below 0.15%.In addition, above-mentioned effect contains at any element and all becomes remarkable under the situation more than 0.0005%.The upper limit of preferred amount is below 0.10%.In addition, under the situation that contains these elements compoundly, preferably make its total amount on be limited to 0.15%.Ln family is meant the Lu from the La of element numbering 57 to element numbering 71.In Ln family, also especially preferably adopt among La, Ce and the Nd more than one.
2. mechanical treatment
Under the situation of processing metal pipe, make with lubricator for the friction that reduces metal tube and machining tool.Lubricant is usually through carrying out degreasing and cleaning removes after processing.But the part of lubricant remains in pipe internal surface.As stated, owing to remain in the formation that the lubricant on metal tube surface hinders the oxidation cortex of Cr main body, therefore, in the present invention, for mechanical treatment is carried out in its removal.Except that above-mentioned lubricant, also there is the residual situation that the oxide skin that when the hot-work tubulation, generates, dirt etc. are arranged of metal tube surface attachment.Because these residues hinder the even formation of the oxidation cortex of Cr main body, therefore expectation is removed.
At this, so-called mechanical treatment is through physically removing the processing that dirt settlings such as remaining in the surperficial lubricant of metal tube, dirt, oxide skin improves surface clearness.As mechanical treatment, for example can enumerate out inject process, directly contact the ground (perhaps friction treatment) of utilizing friction to remove, the method that inject high pressure water removes without abrasive substance etc. with metal pipe internal surface through making abrasive substance.Spray (blast) for example exist in handling utilize pressurized air will throw the material projection air-jet method (air blast), with sand be used to throw the sand-blast (sand blast) (air-jet method a kind of) of material, the shot-peening method of utilizing the centrifugal force of the impeller of wear-resistant alloy system will throw material to throw (shot blast), the metallic surface is given the shot peening that strain is a main purpose (shot peening) (shot-peening method a kind of), wet shotcrete technology method etc.Shot peening can be removed surface attachments simultaneously giving strained.In addition, also can use and to throw the wet shotcrete technology method that material and high pressure water together throw.
The abrasive substance that mechanical treatment adopted does not have special restriction, but silica sand (SiO for example
2), aluminum oxide (Al
2O
3), zirconium white (ZrO
2), boron nitride (BN), silicon carbide (SiC) etc. are nonmetal, their mixture, or be that the abrasive substance of main component is preferable with them.In addition, also can adopt the abrasive substance that constitutes by metals such as cast steel, stainless steel, metallic glass (amorphous), Cr.Also can adopt non-woven fabrics that is fixed with abrasive substance etc.The shape of abrasive substance also has no particular limits, and can be any form in granular, sand grains (grit) shape, powdery etc.The size of abrasive substance also has no particular limits.But, suppressing under the situation of surfaceness in order to improve anti-carbon deposit property, median size (major diameter and minor axis average) is preferably below the 300 μ m, more preferably below the 150 μ m.
Spraying under the situation of above-mentioned abrasive substance to pipe internal surface at high speed, both can spray, also can in metal tube, insert injection nozzle, it is being moved on one side in pipe on one side spray from an end or the two ends of metal tube.Also can or directly be contacted with metal pipe internal surface under the state that the non-woven fabrics that makes abrasive substance perhaps be fixed with abrasive substance is keeping dry with soaking, move while rub by liquid.
3. thermal treatment
Implement thermal treatment to having implemented the metal tube behind the mechanical treatment, form the oxidation cortex of Cr main body at metal pipe internal surface.During less than 1050 ℃, the oxidation cortex that is formed on the metal tube surface is thinner in thermal treatment temp, for carbon enter into metallic substance to block characteristic insufficient.On the other hand, greater than 1270 ℃ the time, in the oxidation cortex, produce pore, crackle, density reduces, the anti-carburizing property reduction of result.Thereby thermal treatment is carried out in 1050 ℃～1270 ℃ temperature range.Be limited to 1120 ℃, more preferably 1160 ℃ under preferred.
In the time of 0.5 minute, can't be formed uniformly the oxidation cortex of the good Cr main body of anti-carburizing property in above-mentioned heat treated hold-time less than.On the other hand, even the hold-time surpasses 60 minutes, the thickness thickening of oxidation cortex causes productivity to reduce, and cost of energy increases.And, also exist the density of oxidation cortex to reduce such problem.Therefore, it is 0.5 minute～60 minutes during the maintenance in the said temperature scope.Be limited to 2 minutes, more preferably 5 minutes under preferred.In addition, be limited to 30 minutes, more preferably 15 minutes on preferred.
In addition, preferably after mechanical treatment, carry out degreasing, cleaning, cleanup acid treatment etc. energetically.Even after implementing these processing, heat-treat, also can not hinder the even formation of the oxidation cortex of Cr main body.These are handled and to cause under the situation that degree of cleaning reduce effective especially might being remained in pipe internal surface by abrasive substance.Heat treated gas atmosphere is so long as can form the condition of the oxidation cortex of Cr main body and get final product.For example be atmospheric gas, make the atmosphere of gas that hydrocarbon fuel (LNG, butane etc.) and air combustion form etc.In addition, also can be the atmosphere of the hydrogen etc. of DX gas, NX gas, RX gas, COG (C gas), control dew point.Also can be the atmosphere that makes the gas that these gases form with mixed arbitrarily.
4.Cr the oxidation cortex of main body
Consider that from the aspect of anti-carburizing property and anti-carbon deposit property the oxidation cortex of Cr main body is extremely important.Particularly, the density of oxidation cortex that contains the Cr more than 50% is higher, is imbued with the characteristic of blocking that carbon is entered into metallic substance.Because the oxidation cortex of Cr main body is less to the katalysis of carbon deposit, therefore, suppress carbon deposit to metal material surface.As a result, can keep thermal conductivity for a long time to tube fluid.For example be used as under the situation of decomposition reaction pipe, the yield rate of resultant of reaction such as alkene is stable.
Cr amount in the oxidation cortex is preferably more than 80%.The oxidation cortex of higher Cr amount is more fine and close, enters into the strong occlusion effect of metallic substance performance for carbon.Element amount in the oxidation cortex can utilize EDX to measure.Measure the surface analysis that needs only from the oxidation cortex.The mark (fraction) of the detection elements of the quantitative utilization of element except C (carbon), O (oxygen) etc. is tried to achieve.
Other
The present invention is provided with under the situation of structure of rib particularly useful at the internal surface that is manufactured on metal tube.It has been generally acknowledged that to have at such internal surface under the situation of metal tube of rib, be easy to receive the attack of carburizing property gas, be easy to cause that oxide skin is peeled off etc.But, adopt the present invention, can access the higher and higher metal tube of repair ability tunicle of anti-carburizing property of pipe internal surface.As the example that is provided with the pipe of rib at pipe internal surface, can enumerate out the pipe that has the internal surface projection, the pipe that has fin etc.Projection, fin etc. both can be integrally formed with pipe self, also can utilize formation such as welding.
Embodiment 1
Utilize embodiment that the present invention more specifically is described, but the present invention is not limited to these embodiment.
Use the metallic substance of the chemical ingredients shown in electric furnace or the vacuum dissolving stove melting table 1, form steel billet.Steel billet to obtaining carries out heat forged and cold rolling, makes the metal tube of external diameter 56mm, wall thickness 6mm.Test has been carried out the mechanical treatment of the condition shown in the table 2 with the metal tube of material number 1～10.Part material has omitted mechanical treatment.Under the described condition of table 2, they are heat-treated, form oxide skin.Part material is implemented to spray as the aluminum oxide of mechanical treatment, does not heat-treat.From uniform anti-carburizing property and the purpose of anti-carbon deposit property estimated in the metal tube, cut off with the 2m spacing from the length of tube direction and to add up to 5, the ring test sheet that extracts width 50mm with after the oxide skin stated observe with test film (tetragon of 20 * 20mm).
Table 1
*Be meant and broken away from the scope of stipulating among the present invention.
Carry out EDX with the surface of test film and analyze from observing, on average obtain the Cr amount (quality %) in the oxidation cortex that in metal tube, generates by the measurement of 3 places.On the other hand, with the ring test sheet at 15%CH by volume
4-3%CO
2-82%H
2Gas atmosphere in kept 300 hours with 1000 ℃, carry out carburizing and fouling test.Anti-carbon deposit property is tried to achieve the increasing amount of coke build-up through reaching the test film quality after testing before the experiment with measuring, obtains the accumulation amount of coke (mg/cm of per unit area
2).On the other hand, the anti-carburizing property utilization C that enters into mother metal measures and estimates.Promptly; Borings is extracted with the 0.5mm spacing in the surface of test film after test on depth direction; Utilize chemical analysis to measure the C amount (quality %) of C amount (quality %) and the 1.0mm～1.5mm degree of depth of 0.5mm～1.0mm degree of depth; Deduct before the test mother metal C amount (quality %) afterwards, with the mean value of two C amount entering C amount (quality %) as the 1mm degree of depth.
For projects, with the situation that satisfies following standard as qualified.
(1) the oxidation cortex of Cr main body: press EDX and analyze Cr concentration >=50 quality %
(2) anti-carburizing property: entering C amount≤1.5 quality % of the 1mm degree of depth
(3) anti-carbon deposit property: pile up C amount≤3mg/cm
2
With these as a result table of induction be shown in Table 2.
Table 2
In addition, the numeral in the table 2 is to satisfy the number of above-mentioned (1), (2) and (3) respectively to 5 each conditions of test film mark.For example, 3/5 is that in 53 are qualified.In the present invention, good with anti-carburizing property on the total length of metal pipe internal surface and anti-carbon deposit property is purpose, therefore, judges 5 whole qualified situation and satisfies standard of the present invention.
As shown in table 2, adopt the test of the discontented foot of chemical ingredients condition given to this invention no matter whether to carry out mechanical treatment with the No.21 of material number 10 and 22 example, all can't obtain the oxidation cortex of Cr main body, anti-carburizing property and anti-carbon deposit property are all relatively poor.In the example that adopts test with No.7 in the example of material number 2 and 3, that omitted mechanical treatment and 14, several in 5 do not satisfy standard, and the anti-carburizing property and the anti-carbon deposit property of length of tube direction are inhomogeneous.Adopting test with No.8 in the example of the metal tube of material number 2, that thermal treatment temp is lower with do not implement in the example of heat treated No.9, several carburizing, carbon deposits of in test film, having produced are arranged.
On the other hand; Use chemical ingredients to satisfy the metal tube of the test of condition given to this invention with material number 1～9; And; Implement mechanical treatment; And under condition given to this invention, implemented the standard that heat treated test film all satisfies above-mentioned (1), (2) and (3), anti-carburizing property and anti-carbon deposit property are good on the total length of metal tube length direction.
Usability on the industry
Adopt the present invention, can be manufactured on the metal tube that metal pipe internal surface has the oxidation cortex of Cr main body equably, therefore, anti-carburizing property and anti-carbon deposit property in the carburizing property atmosphere surrounding are good.Therefore, the metal tube that utilizes the present invention to obtain is especially suitable for use as decomposition boiler tube in the pipe that in the carburizing property gas atmosphere that contains hydrocarbon gas, CO gas etc., uses, for example petroleum refining, petrochemical equipment etc., modification boiler tube, furnace tubing, heat exchanger tube etc.
Claims (4)
1. a production method of metal pipe is characterized in that,
The internal surface of the metal tube of the Ni that contains 20%～55% Cr and 20%～70% in quality % has been implemented after the mechanical treatment; Be implemented in 1050 ℃～1270 ℃ the interior thermal treatment that keeps 0.5 minute～60 minutes of temperature range, form the oxidation cortex of Cr main body at the internal surface at least of metal tube.
2. production method of metal pipe according to claim 1 is characterized in that,
Above-mentioned metal tube has following chemical ingredients; That is, in quality % contain C:0.01%～0.6%, Si:0.1%～5%, Mn:0.1%～10%, below the P:0.08%, below the S:0.05%, Cr:20%～55%, Ni:20%～70%, N:0.001%～0.25% and O (oxygen): below 0.02%;
Rest part is made up of Fe and impurity.
3. production method of metal pipe according to claim 2 is characterized in that,
Above-mentioned metal tube also has more than one that from the element shown in following (a)～(g), select in quality %;
(a) below the Cu:5%;
(b) below the Co:5%;
(c) below Mo:3%, below the W:6% and below the Ta:6% more than one of selection;
(d) selection a kind of or two kinds below Ti:1% and below the Nb:2%;
(e) below B:0.1%, below the Zr:0.1% and below the Hf:0.5% more than one of selection;
(f) below Mg:0.1%, below the Ca:0.1% and below the Al:1% more than one of selection;
(g) below Y:0.15%, reach Ln family: more than one that select below 0.15%.
4. according to each described production method of metal pipe in the claim 1～3, it is characterized in that,
Above-mentioned metal tube has the projection of rib shape at pipe internal surface.
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| PCT/JP2010/052165 WO2010093034A1 (en) | 2009-02-16 | 2010-02-15 | Method for producing metal tube |
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| US (1) | US20110308669A1 (en) |
| EP (1) | EP2397573B1 (en) |
| JP (1) | JP4586938B2 (en) |
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- 2010-02-15 EP EP10741311.4A patent/EP2397573B1/en not_active Not-in-force
- 2010-02-15 JP JP2010506734A patent/JP4586938B2/en active Active
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| CN107709587B (en) * | 2015-06-26 | 2019-07-26 | 日本制铁株式会社 | Atomic energy Ni base alloy pipe |
| CN106521242A (en) * | 2016-09-23 | 2017-03-22 | 无锡双马管件制造有限公司 | No-welding small R medium-frequency elbow alloy material for boiler and preparation method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2010093034A1 (en) | 2010-08-19 |
| CA2750014A1 (en) | 2010-08-19 |
| CA2750014C (en) | 2014-12-02 |
| EP2397573A1 (en) | 2011-12-21 |
| JPWO2010093034A1 (en) | 2012-08-16 |
| US20110308669A1 (en) | 2011-12-22 |
| KR20110107370A (en) | 2011-09-30 |
| JP4586938B2 (en) | 2010-11-24 |
| EP2397573B1 (en) | 2017-09-20 |
| EP2397573A4 (en) | 2012-12-26 |
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