WO2005108636A1 - 超高強度uoe鋼管とその製造方法 - Google Patents
超高強度uoe鋼管とその製造方法 Download PDFInfo
- Publication number
- WO2005108636A1 WO2005108636A1 PCT/JP2005/008503 JP2005008503W WO2005108636A1 WO 2005108636 A1 WO2005108636 A1 WO 2005108636A1 JP 2005008503 W JP2005008503 W JP 2005008503W WO 2005108636 A1 WO2005108636 A1 WO 2005108636A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- less
- strength
- steel pipe
- ceq
- toughness
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 87
- 239000010959 steel Substances 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000005098 hot rolling Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000005336 cracking Methods 0.000 claims abstract description 8
- 239000010953 base metal Substances 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 230000001965 increasing effect Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 6
- 238000009864 tensile test Methods 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- RMLPZKRPSQVRAB-UHFFFAOYSA-N tris(3-methylphenyl) phosphate Chemical compound CC1=CC=CC(OP(=O)(OC=2C=C(C)C=CC=2)OC=2C=C(C)C=CC=2)=C1 RMLPZKRPSQVRAB-UHFFFAOYSA-N 0.000 description 2
- 241000220450 Cajanus cajan Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- -1 after hot rolling Substances 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000013003 hot bending Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- 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
- B21C37/08—Making tubes with welded or soldered seams
-
- 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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Definitions
- the present invention relates to an ultra-high-strength UOE steel pipe having a pipe circumferential strength (TS) of 750 MPa or more and 900 MPa or less, excellent in balance between strength and toughness, and excellent in joint fracture resistance, and a method for producing the same. .
- TS pipe circumferential strength
- JP-A-8-209290 and JP-A-8-209291 disclose high-strength steel pipes containing a high Mn + high Mo-based component. Discloses that two-phase rolling is performed.
- Japanese Patent Application Laid-Open No. 9-31536 similarly discloses a high-strength steel pipe having a Mn + high-Mo component, but discloses therein a base material having a base material strength of 9501 ⁇ ? & Or more. Ultra high strength steel pipe equivalent to 120 grade.
- JP-A-2000-199036 discloses an ultra-high-strength steel pipe having a steel pipe strength of 900 MPa or more.
- JP-A-8-199192 also discloses a high-strength steel pipe. In this steel pipe, the base metal structure has a martensite fraction of 90% or more. Is used.
- the steel pipe strength and the base metal steel strength are the same, and the steel pipe strength is a result measured in the pipe circumferential direction, that is, the pipe circumferential strength. Disclosure of the invention
- the carbon equivalent (Ceq) is set to a high range, which has not been conventionally applied, in order to improve the joint breaking resistance of a UOE steel pipe.
- the higher the strength of the steel the higher the required level of HAZ and base metal toughness.
- the reduction of Ti and N is indispensable especially for the improvement of HAZ toughness, and at the same time, the reduction of S is necessary for the improvement of base metal toughness.
- the present invention provides a base material, wherein the chemical composition of the base material is C: 0.03 to 0.08%,
- Ceq carbon equivalent
- Pcm weld crack susceptibility index
- each element symbol in the formula means the content in mass% of that element.
- the U ⁇ E steel pipe of the present invention is required to exhibit a fracture toughness at which the Shanollepie absorbed energy at -10 ° C of the base metal and the weld heat affected zone (HAZ) is 150 J or more.
- the present invention provides a steel plate having the above chemical composition, after hot rolling, water cooling with a water cooling stop temperature of 350 ° C or higher, and a U-press and a ⁇ -press on the obtained steel plate.
- a HAZ soft joint of a joint unique to a UOE steel pipe to be subjected to submerged welding. And the joint fracture resistance of the UOE pipe is significantly improved.
- the toughness of the base metal and HAZ can be secured.
- the UOE steel pipe according to the present invention can be manufactured under the same conditions as a conventional X80 grade or lower UOE steel pipe, so that an ultra-high strength UOE steel pipe can be manufactured while maintaining the same productivity as the conventional UOE steel pipe. Can be manufactured. Therefore, it is possible to significantly reduce the manufacturing cost of ultra-high strength U ⁇ E steel pipe.
- the types of fracture include brittle fracture and ductile fracture.
- brittle fracture the fracture propagates at an ultra-high speed of 500 m / sec or more, whereas the fracture propagation speed in ductile fracture is as small as 300 m / sec or less. Therefore, in order to apply steel pipes to actual pipelines, it is a major premise that the base metal has toughness that causes ductile fracture in the usage environment.
- the fracture safety can be evaluated based on the fracture position when a force is applied in the pipe circumferential direction.
- the fracture position is roughly classified into three types: base metal, weld metal part and weld heat affected zone (HAZ).
- base metal weld metal part
- HAZ weld heat affected zone
- ductile fracture occurs if sufficient toughness is secured.
- ductile fracture occurs in some cases, but brittle fracture occurs in most cases. Therefore, it is absolutely necessary to prevent breakage at the weld metal.
- the strength of the weld metal is made higher than the base metal (overmatch) to prevent breakage at the weld metal. Fracture in HAZ is a phenomenon especially observed in high-strength steel of 700 MPa or more.
- the steel working hard in the present invention is particularly effective in preventing this HAZ fracture.
- Possible ways to prevent HAZ rupture are: (1) Make the strength of the weld metal more than the base metal strength (ensure overmatch),
- Ceq is increased in order to secure the strength of HAZ.
- the HAZ is a structure that has once melted and re-solidified or transformed under the influence of heat.
- the heat input may be set to the minimum heat input that can secure the shape of the welded portion.
- high Ceq suppresses softening of HAZ to secure high strength, while limiting P cm to a certain value or less, maintains good girth weldability.
- Control of N and Ti is also important for ensuring HAZ toughness, and it has been found that by optimizing the balance, toughness deterioration due to an increase in strength can be prevented.
- Thermo-Mechanical Control Process was applied, and the water-cooling stop temperature after hot rolling was 200 ° C or less (many cases are reported to be room temperature). This is to ensure basic performance such as strength and toughness.
- the water cooling stop temperature after hot rolling is 350 ° C with a component composition of Ceq ⁇ 0.50%.
- Manufacture as C This makes it possible to achieve both high strength and high toughness in addition to fracture near the joint when a fracture occurs.
- Uniform elongation is the amount of plastic deformation up to the maximum load in a tensile test. Therefore, the large uniform elongation of the base metal means that if the pressure suddenly increases during the operation of the pipeline, the amount of plastic deformation up to the TS will be large and the fracture safety will be high. High, means that. From this point, it is desirable that the uniform elongation of the base material is 5.0% or more.
- FIG. 1 is a graph showing the relationship between S and base material toughness (Charpy absorbed energy at 110 ° C.) for X100 grade steel. From Fig. 1, it can be seen that the toughness level of the base metal is significantly improved by lowering the S. From these results, it can be concluded that controlling ultra-high strength steel is effective when high fracture toughness is required.
- the required fracture toughness value is set to 150 J, S is 20 ppm or less. If a higher fracture toughness value, for example, 200 J or more, is required, S may be set to 14 ppm or less.
- the present invention is completely satisfactory in that it can be solved by the conventional manufacturing method, prevents joint HAZ breakage, secures a high uniform elongation of the base material, and further achieves girth welding performance when laying a pipeline.
- a carbon equivalent (Ceq) is used to satisfy the APIX100 grade equivalent strength by using a UOE steel pipe manufactured by TMCP with the same water cooling stop temperature as 350 ° C or higher as that of ordinary steel of APIX80 grade or less.
- the chemical composition of the base material in the present invention is as follows.
- C is an element effective for increasing the strength, and is added in an amount of 0.03% or more to impart strength of X100 grade.
- C exceeds 0.08%, the toughness significantly decreases, adversely affecting the mechanical properties of the base material and promoting the generation of surface scratches on the slab.
- the preferred C content is 0.03-0.05%.
- Mn is an element effective for strengthening and toughening steel, and is contained at 1.70% or more to ensure strength and toughness. However, if Mn exceeds 2.2%, the weld toughness deteriorates. The preferred Mn content is 1.8-2.0%.
- S is one of the elements that need to be restricted in order to secure the toughness of the base material, and S is 0.0020. /. Beyond Then, the required fracture toughness value of the base material cannot be secured. As described with reference to FIG. 1, S may be further limited to, for example, 0.0014% or less according to the fracture toughness value required for the base material.
- Ti has an effect of suppressing the grain growth of HAZ by generating TiN and improving its toughness. This requires at least 0.005% Ti. On the other hand, if Ti exceeds 0.025%, the amount of dissolved N increases and HAZ toughness deteriorates.
- the preferred Ti content is 0.005 to 0.018%.
- N 0.0050% or less
- N forms a nitride with V, Ti, etc., and is effective in improving high-temperature strength.
- N exceeds 0.0050%, carbonitrides are formed with Nb, V, and Ti, and the toughness of the base material and HAZ is reduced.
- HAZ toughness is high, it is desirable to set the extremely low N of 0.0035% or less.
- the carbon equivalent (Ceq) and the weld cracking susceptibility index (Pcm) of the base metal are required to achieve high strength of XI00 grade or higher and high toughness of the base metal and HAZ. This is a very important factor.
- Base material Ceq 0.50% or more
- the carbon equivalent (Ceq) of the base material shall be 0.50% or higher.
- the upper limit of Ceq is not particularly limited as long as the base steel strength of X100 dales or more can be secured, but Ceq is preferably 0.55% or less. Ceq is given by the following equation (where each element symbol means the content in mass% of that element):
- Ceq C + Mn / 6 + (Cr + Mo + V) / 5 + (Cu + Ni) / 150
- the steel composition is designed so that the base material has a weld crack susceptibility index (Pcm) of 0.24% or less.
- Pcm weld crack susceptibility index
- the lower limit of Pcm is not particularly specified, but is usually 0.16% or more.
- Ceq and Pcm of the weld metal are not particularly limited.
- Ceq and Pcm simply refer to Ceq and Pcm of the base material including HAZ, that is, the entire steel pipe excluding the weld metal.
- the U ⁇ E steel pipe of the present invention has a pipe circumferential strength of 750 MPa or more and 900 MPa or less. This stipulates that the strength level of the steel pipe is at the level of X100 grade.
- the water cooling stop temperature after hot rolling is set to 350 ° C or more, and the X100 ladder is manufactured in the same manner as the conventional lower strength U ⁇ E steel pipe. It is possible to manufacture ultra-high strength U ⁇ E steel pipes and secure the required base material and fracture toughness of HAZ.
- the base material of the UOE steel pipe according to the present invention may further contain one or more optional components selected from the following groups (i) to (iv).
- Both Si and A1 have a deoxidizing effect, and it is preferable to mix at least one of them.
- Si also has an effect of strengthening steel in addition to a deoxidizing agent. If the Si content is less than 0.05%, deoxidation becomes insufficient. If the Si content exceeds 0.5%, a large amount of striped martensite is generated in the HAZ, which extremely deteriorates the HAZ toughness and leads to a decrease in the mechanical properties of the steel pipe.
- the Si content can be determined in the range of 0.05 to 0.50% in consideration of the balance with the thickness of the steel sheet.
- A1 acts as a deoxidizing agent like S sinus, but its effect is sufficiently obtained at 0.06% or less. Addition in excess of this will degrade the on-site girth weldability and is not economically desirable.
- Cu can improve the strength without significantly impairing the toughness through structural change due to solid solution strengthening and the effect of increasing hardenability.
- Cu content exceeds 1.0%, harmful Cu chucking occurs on the slab surface eaves, and low-temperature slab heating is required to prevent the elimination, which limits the manufacturable range.
- Ni like Cu, can improve strength without significantly impairing toughness through structural change due to solid solution strengthening and hardenability enhancing effects. At the same time, it has the function of suppressing the deterioration of the toughness of the base material and HAZ after hot bending. Adding more than 2.0% Ni is costly
- Cr can improve the strength without significantly deteriorating the toughness through the structural change due to the solid solution strengthening and the hardenability enhancement effect as in Cu and Ni, but Cr is 1.0. When / o is exceeded,
- Nb and V have a great effect on increasing strength due to precipitation strengthening and increasing hardenability, or improving toughness due to grain refinement. In any case, if the added amount exceeds 0.1%, it causes a decrease in the toughness of HAZ.
- the more preferable content is Cu: 0.50
- Ni 0.80% or less
- Cr 0.40% or less
- Nb 0.06% or less
- V 0.06% or less.
- Mo is effective in increasing the strength of the base metal and welds. If the added amount of Mo is too large, the weldability at the site and the toughness of the HAZ will deteriorate, so the upper limit is made 1.0%. A more preferred content when Mo is added is 0.50% or less.
- Ca is effective in controlling the morphology of inclusions, specifically, spheroidizing, and prevents hydrogen-induced cracking and lamellar cracking. However, at 0.005% the effect saturates.
- a steel slab adjusted to the above-mentioned predetermined chemical composition is subjected to hot rolling, and after finishing rolling, the water cooling stop temperature is set to 350 ° C or more. Water cooling.
- the resulting hot-rolled steel sheet is formed into a tube by conventional U-press and U-press.
- the butt portion is welded from the inner and outer surfaces. This welding is performed by submerged arc welding.
- the pipe is expanded to increase roundness. Expansion can be performed by mechanical expansion or hydraulic expansion.
- U ⁇ E steel pipe of the present invention there is no particular limitation on the manufacturing process of the U ⁇ E steel pipe except for the water-cooling conditions after hot rolling. It may be carried out in the same manner as the production of conventional U80 steel pipe of X80 grade or less. Nevertheless, it is possible to manufacture U ⁇ E steel tubes with ultra-high strength of X100 grade (pipe circumferential strength of 750MPa or more and 900MPa or less) and at the same time, excellent in fracture resistance.
- a steel slab having the chemical composition shown in Table 1 was heated * held at 1100 to 1200, and then subjected to finish rolling at 700 to 850 ° C to a sheet thickness of 20 mm, followed by water cooling shown in Table 1. Water cooling was performed so that the temperature reached the stop temperature, and then air cooling was performed to room temperature to produce a hot-rolled steel sheet as a base material.
- the base steel sheet was cold-formed into a tubular body by U-press and then ⁇ -press. After that, the butt joint was welded by conventional submerged arc welding, and mechanical expansion was performed. In this way, UOE steel pipes with an outer diameter of 910 mm (36 inches), a wall thickness of 20 mm, and a length of 1200 mm were manufactured.
- Table 1 also shows the strength and toughness of the base metal, the joint tensile properties of the produced U ⁇ E steel pipe, and the results of the girth welding test.
- the base material strength and the joint tensile breaking position are important items for confirming the effect of the present invention.
- the toughness and strength of the base metal were measured using an impact test piece (JIS No. 4) and a tensile test piece (ASTM diameter 6.35 mm round bar test piece) in the circumferential direction from the U ⁇ E steel pipe so as not to include the weld and HAZ. Samples were taken and Charpy absorbed energy at -10 ° C (denoted as VE_10 ° C), tensile strength (TS), and uniform elongation (critical elongation) were determined.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002566425A CA2566425A1 (en) | 2004-05-11 | 2005-05-10 | Ultrahigh strength uoe steel pipe and a process for its manufacture |
JP2006513023A JPWO2005108636A1 (ja) | 2004-05-11 | 2005-05-10 | 超高強度uoe鋼管とその製造方法 |
EP05739174A EP1746175A4 (en) | 2004-05-11 | 2005-05-10 | ULTRAHAUTE RESISTANCE UOE STEEL TUBE AND MANUFACTURING METHOD THEREOF |
US11/598,022 US20070240794A1 (en) | 2004-05-11 | 2006-11-13 | Ultrahigh strength UOE steel pipe and a process for its manufacture |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004141223 | 2004-05-11 | ||
JP2004-141223 | 2004-05-11 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/598,022 Continuation US20070240794A1 (en) | 2004-05-11 | 2006-11-13 | Ultrahigh strength UOE steel pipe and a process for its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005108636A1 true WO2005108636A1 (ja) | 2005-11-17 |
Family
ID=35320247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008503 WO2005108636A1 (ja) | 2004-05-11 | 2005-05-10 | 超高強度uoe鋼管とその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070240794A1 (ja) |
EP (1) | EP1746175A4 (ja) |
JP (1) | JPWO2005108636A1 (ja) |
CN (1) | CN1977059A (ja) |
CA (1) | CA2566425A1 (ja) |
WO (1) | WO2005108636A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012112803A (ja) * | 2010-11-25 | 2012-06-14 | Jfe Steel Corp | 鋼構造物の使用限界予測手法 |
JP2012117995A (ja) * | 2010-12-03 | 2012-06-21 | Jfe Steel Corp | 冷間成形角形鋼管の変形状態評価方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101257547B1 (ko) * | 2007-07-23 | 2013-04-23 | 신닛테츠스미킨 카부시키카이샤 | 변형 특성이 우수한 강관 및 그 제조 방법 |
US8803023B2 (en) * | 2007-11-29 | 2014-08-12 | Isg Technologies | Seam welding |
EP2218800B1 (en) * | 2007-12-07 | 2012-05-16 | Nippon Steel Corporation | Steel with weld heat-affected zone having excellent ctod properties and process for producing the steel |
JP2009235460A (ja) * | 2008-03-26 | 2009-10-15 | Sumitomo Metal Ind Ltd | 耐震性能及び溶接熱影響部の低温靭性に優れた高強度uoe鋼管 |
JPWO2010104165A1 (ja) * | 2009-03-12 | 2012-09-13 | 住友金属工業株式会社 | 耐hic厚鋼板およびuoe鋼管 |
CN104087829B (zh) * | 2009-05-22 | 2017-04-12 | 杰富意钢铁株式会社 | 大热输入焊接用钢材 |
CN104894492B (zh) * | 2015-06-26 | 2017-04-19 | 山东钢铁股份有限公司 | 一种超低温大口径wphy80级三通管件专用钢板及其制备方法 |
CN105127237A (zh) * | 2015-09-19 | 2015-12-09 | 云南昆钢新型复合材料开发有限公司 | 双金属耐磨复合管的生产方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000119797A (ja) * | 1998-10-12 | 2000-04-25 | Nippon Steel Corp | 溶接熱影響部靱性に優れた溶接用高張力鋼材とその製造方法 |
JP2000256779A (ja) * | 1999-03-10 | 2000-09-19 | Nippon Steel Corp | 低温靱性に優れた超高強度鋼管およびその製造方法 |
JP2001113374A (ja) * | 1999-10-15 | 2001-04-24 | Nippon Steel Corp | シーム溶接部の低温強靱性に優れた超高強度鋼管及びその製造方法 |
JP2003293078A (ja) * | 2002-03-29 | 2003-10-15 | Nippon Steel Corp | 溶接熱影響部靭性及び変形能に優れた鋼管及び鋼管用鋼板の製造法 |
JP2003306749A (ja) * | 2002-04-19 | 2003-10-31 | Nippon Steel Corp | 変形能に優れた高強度鋼管及び鋼管用鋼板の製造法 |
JP2003342638A (ja) * | 2002-05-20 | 2003-12-03 | Nippon Steel Corp | 高強度ベンド管の製造法 |
JP2004052104A (ja) * | 2002-05-27 | 2004-02-19 | Nippon Steel Corp | 低温靱性および溶接熱影響部靱性に優れた高強度鋼とその製造方法および高強度鋼管の製造方法 |
JP2004099930A (ja) * | 2002-09-05 | 2004-04-02 | Nippon Steel Corp | 溶接部靱性に優れた高強度溶接鋼管およびその製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02250941A (ja) * | 1989-03-24 | 1990-10-08 | Sumitomo Metal Ind Ltd | 低炭素クロムモリブデン鋼及びその製造方法 |
US6045630A (en) * | 1997-02-25 | 2000-04-04 | Sumitomo Metal Industries, Ltd. | High-toughness, high-tensile-strength steel and method of manufacturing the same |
WO1999005336A1 (en) * | 1997-07-28 | 1999-02-04 | Exxonmobil Upstream Research Company | Ultra-high strength, weldable, boron-containing steels with superior toughness |
-
2005
- 2005-05-10 CA CA002566425A patent/CA2566425A1/en not_active Abandoned
- 2005-05-10 JP JP2006513023A patent/JPWO2005108636A1/ja active Pending
- 2005-05-10 CN CNA2005800213134A patent/CN1977059A/zh active Pending
- 2005-05-10 EP EP05739174A patent/EP1746175A4/en not_active Withdrawn
- 2005-05-10 WO PCT/JP2005/008503 patent/WO2005108636A1/ja active Application Filing
-
2006
- 2006-11-13 US US11/598,022 patent/US20070240794A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000119797A (ja) * | 1998-10-12 | 2000-04-25 | Nippon Steel Corp | 溶接熱影響部靱性に優れた溶接用高張力鋼材とその製造方法 |
JP2000256779A (ja) * | 1999-03-10 | 2000-09-19 | Nippon Steel Corp | 低温靱性に優れた超高強度鋼管およびその製造方法 |
JP2001113374A (ja) * | 1999-10-15 | 2001-04-24 | Nippon Steel Corp | シーム溶接部の低温強靱性に優れた超高強度鋼管及びその製造方法 |
JP2003293078A (ja) * | 2002-03-29 | 2003-10-15 | Nippon Steel Corp | 溶接熱影響部靭性及び変形能に優れた鋼管及び鋼管用鋼板の製造法 |
JP2003306749A (ja) * | 2002-04-19 | 2003-10-31 | Nippon Steel Corp | 変形能に優れた高強度鋼管及び鋼管用鋼板の製造法 |
JP2003342638A (ja) * | 2002-05-20 | 2003-12-03 | Nippon Steel Corp | 高強度ベンド管の製造法 |
JP2004052104A (ja) * | 2002-05-27 | 2004-02-19 | Nippon Steel Corp | 低温靱性および溶接熱影響部靱性に優れた高強度鋼とその製造方法および高強度鋼管の製造方法 |
JP2004099930A (ja) * | 2002-09-05 | 2004-04-02 | Nippon Steel Corp | 溶接部靱性に優れた高強度溶接鋼管およびその製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1746175A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012112803A (ja) * | 2010-11-25 | 2012-06-14 | Jfe Steel Corp | 鋼構造物の使用限界予測手法 |
JP2012117995A (ja) * | 2010-12-03 | 2012-06-21 | Jfe Steel Corp | 冷間成形角形鋼管の変形状態評価方法 |
Also Published As
Publication number | Publication date |
---|---|
CA2566425A1 (en) | 2005-11-17 |
EP1746175A4 (en) | 2007-07-04 |
CN1977059A (zh) | 2007-06-06 |
US20070240794A1 (en) | 2007-10-18 |
EP1746175A1 (en) | 2007-01-24 |
JPWO2005108636A1 (ja) | 2008-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4853575B2 (ja) | 耐座屈性能及び溶接熱影響部靭性に優れた低温用高強度鋼管およびその製造方法 | |
JP5217556B2 (ja) | 耐座屈性能及び溶接熱影響部靭性に優れた低温用高強度鋼管およびその製造方法 | |
JP5200932B2 (ja) | ベンド管及びその製造方法 | |
KR101410588B1 (ko) | 저온 인성이 우수한 후육 용접 강관 및 저온 인성이 우수한 후육 용접 강관의 제조 방법, 후육 용접 강관 제조용 강판 | |
JP3545770B2 (ja) | 高張力鋼及びその製造方法 | |
US8764918B2 (en) | High strength steel pipe for line pipe superior in low temperature toughness and high strength steel plate for line pipe and methods of production of the same | |
US8084144B2 (en) | High strength thick welded steel pipe for line pipe superior in low temperature toughness and method of production of the same | |
WO2005108636A1 (ja) | 超高強度uoe鋼管とその製造方法 | |
JP5055774B2 (ja) | 高変形性能を有するラインパイプ用鋼板およびその製造方法。 | |
JP5217773B2 (ja) | 溶接熱影響部靭性に優れた引張強度が570MPa以上760MPa以下の低温用高強度溶接鋼管およびその製造方法 | |
JP2013204103A (ja) | 耐座屈性能に優れた低温用高強度溶接鋼管とその製造方法および耐座屈性能に優れた低温用高強度溶接鋼管用鋼板の製造方法 | |
JP4655670B2 (ja) | 低降伏比且つ溶接部靭性に優れた高強度溶接鋼管の製造方法 | |
JP2007260715A (ja) | 超高強度溶接鋼管の製造方法 | |
JPWO2008139639A1 (ja) | ベンド管及びその製造方法 | |
JP3770106B2 (ja) | 高強度鋼とその製造方法 | |
JP3747724B2 (ja) | 溶接性および靭性に優れた60キロ級高張力鋼及びその製造方法 | |
JP3941211B2 (ja) | 耐hic性に優れた高強度ラインパイプ用鋼板の製造方法 | |
JP5151034B2 (ja) | 高張力ラインパイプ用鋼板の製造方法および高張力ラインパイプ用鋼板 | |
JP2002060910A (ja) | 高Cr溶接鋼管 | |
JP2002220634A (ja) | 耐歪み時効特性に優れた高強度鋼材とその製造方法 | |
JP2001140040A (ja) | 耐硫化物応力割れ性に優れた低炭素フェライト−マルテンサイト二相ステンレス溶接鋼管 | |
JP2002206140A (ja) | 鋼管及びその製造方法 | |
JP2002285283A (ja) | 高速延性破壊特性に優れた超高強度鋼管 | |
JP2000096187A (ja) | 高強度溶接鋼管 | |
JP3903747B2 (ja) | 機械的複合特性を有する鋼材及びその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006513023 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2566425 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11598022 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005739174 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580021313.4 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2005739174 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 11598022 Country of ref document: US |