CN107254639A - A kind of control method of the effective steel of ultra supercritical high-pressure boiler and its continuous casting billet centre burst - Google Patents
A kind of control method of the effective steel of ultra supercritical high-pressure boiler and its continuous casting billet centre burst Download PDFInfo
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- CN107254639A CN107254639A CN201710405042.7A CN201710405042A CN107254639A CN 107254639 A CN107254639 A CN 107254639A CN 201710405042 A CN201710405042 A CN 201710405042A CN 107254639 A CN107254639 A CN 107254639A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
Abstract
The invention discloses a kind of effective steel of ultra supercritical high-pressure boiler and its control method of continuous casting billet centre burst, the effective steel of ultra supercritical high-pressure boiler includes the chemical composition of following percentage by weight：C：0.08~0.12%, Si：0.20~0.50%, Mn：0.30~0.60%, Cr：8.20~8.90%, Mo：0.90~1.05%, V：0.18~0.20%, Nb：0.06~0.07%, Ti≤0.008%, Zr≤0.008%, N：0.040~0.050%, P≤0.008%, S≤0.001%, Al≤0.001%, O≤0.0020%, remaining is Fe and other inevitable impurity.Using the effective steel continuous casting billet of ultra supercritical high-pressure boiler of the steel chemical composition of the present invention, technological process and processing parameter production, continuous casting billet centre burst rank≤1.0 grade, continuous casting billet centre burst length≤30mm.
Description
Technical field
The present invention relates to a kind of effective steel of ultra supercritical high-pressure boiler and its control method of continuous casting billet centre burst.
Background technology
T/P91 is the heat power plant boiler jet chimney, heat-collecting box, reheating of the U.S.'s development seventies in last century
Device, steam lead etc. use refractory steel, with high allowable stress, creep rupture strength, creep resistance, fatigue strength, thermal conductivity and good
Weldability well, preferable corrosion stability.Current U.S., Europe, the thermal power plant of Deng advanced countries be commonly used T91 and
P91 steel, achieves good economic benefit.
At present, it is main both at home and abroad that P91 steel is produced using die casting process.In recent years, with the progress of continuous casting technology, and drop
The need for low production cost, there are a small number of producers to start to produce P91 steel using continuous casting process.But the microalloy element such as Nb, V in P91
Higher with the alloying element content such as Cr, Mo and N content, during continuous casting and solidifying, strand generally can all produce centre burst
Defect, and centre burst rank is high (centre burst >=2.5 grade, centre burst diameter reaches more than 100mm).In order to remove continuous casting
The need for the centre burst of round billet is to meet tubulation, tube mill is generally first gone centre burst defect using mach method
Remove, then carry out steel pipe rolling, this make it that the P91 Tube yields that continuous casting process is produced are low, and production cost is improved.Therefore, have very much
Necessity carries out P91 steel continuous cast round billets centre burst control method researchs.
The content of the invention
Based on above-mentioned background, the invention provides a kind of effective steel of ultra supercritical high-pressure boiler and its continuous casting billet centre burst
Control method.Using chemical composition disclosed by the invention and control method, the obtained effective steel of ultra supercritical high-pressure boiler connects
Centre burst rank≤1.0 grade of strand, centre burst length≤30mm of continuous casting billet.
The technical scheme that the present invention takes is：
A kind of effective steel of ultra supercritical high-pressure boiler, includes the chemical composition of following percentage by weight：C：0.08~
0.12%, Si：0.20~0.50%, Mn：0.30~0.60%, Cr：8.20~8.90%, Mo：0.90~1.05%, V：0.18
~0.20%, Nb：0.06~0.07%, Ti≤0.008%, Zr≤0.008%, N：0.040~0.050%, P≤0.008%,
S≤0.001%, Al≤0.001%, O≤0.0020%, remaining is Fe and other inevitable impurity.
The ultra supercritical refers to the ultra supercritical state that temperature is more than 580 DEG C, pressure is more than 28MPa.
Further, the effective steel of ultra supercritical high-pressure boiler, includes the chemical composition of following percentage by weight：C：
0.085~0.095%, Si：0.40~0.49%, Mn：0.35~0.52%, Cr：8.30~8.80%, Mo：0.95~
1.04%, V：0.18~0.20%, Nb：0.06~0.07%, Ti≤0.002%, Zr≤0.002%, N：0.043~
0.048%, P≤0.008%, S≤0.001%, Al≤0.001%, O≤0.0020%, it is remaining for Fe and other inevitable
Impurity.
Further, the effective steel of ultra supercritical high-pressure boiler, includes the chemical composition of following percentage by weight：C：
0.09%, Si：0.49%, Mn：0.36%, Cr：8.35%, Mo：1.04%, V：0.20%, Nb：0.07%, Ti：0.001%,
Zr：0.00:1%, N：0.043%, P：0.006%, S：0.001%, Al：0.001%, O：0.001%, it is remaining for Fe and it is other not
Evitable impurity.
Present invention also offers a kind of control method of the continuous casting billet centre burst of the effective steel of ultra supercritical high-pressure boiler, institute
Control method is stated to comprise the following steps：
(1) electric arc furnaces or converter smelting；
(2) LF stoves are refined；
(3) RH or VD vacuum outgas；
(4) round billet continuous casting；
(5) continuous casting billet slow cooling；
In the step (5), enter burial pit after round billet continuous casting in time, it is ensured that enter burial pit temperature >=700 DEG C, go out burial pit
Temperature≤100 DEG C.
In the step (4), optimization continuous casting billet pulling rate and Water Rate for Secondary Cooling Water, Water Rate for Secondary Cooling Water control 0.1~
0.15L/kg steel, it is ensured that continuous casting billet straightening temperature >=900 DEG C；Cast in production using constant speed, it is to avoid pulling rate fluctuates widely.
Further, continuous casting billet pulling rate is 0.15~0.60m/min, and the speed of constant speed casting is set to according to specification:Φ
800mm specifications are 0.16m/min, and Φ 700mm specifications are 0.22m/min, and Φ 600mm specifications are 0.30m/min, Φ 500mm rule
Lattice are 0.40m/min, and Φ 380mm specifications are 0.58m/min.
In the step (4), electromagnetic agitating technology is used in crystallizer, casting stream, three sections of solidification end；To mitigate continuous casting billet
Crack sensitivity, its technological parameter is shown in Table 1；
The electromagnetic agitation technique parameter of table 1
In the step (4), the bag induction heating technique in, the low overheat of bag molten steel overheat≤10 DEG C in realization
Cast；To mitigate component segregation of continuous casting slab and crack sensitivity.
The specification of the continuous casting billet is Φ 380mm~Φ 800mm.
In order to realize the control of the continuous casting billet centre burst to the effective steel of ultra supercritical high-pressure boiler, the present invention is in composition of steel
In design, design is optimized to P91 composition of steel, on the premise of performance is not influenceed, appropriate reduction crack sensitivity element contains
Amount, such as N, Nb, V, Al, while strictly controlling the content of impurity element O, P, S etc. in steel, Mn/S is more than 200 for control；Steel into
In point, the effect of each element is as follows：
Nb：Nb can combine to form the MX type Second Phase Precipitation thing Nb (C, N) of small and dispersed with C, N, and such precipitate is thin
Small, disperse, size is essentially nanoscale, and structure stability very well, can effectively improve the high temperature of material during high-temperature service
Creep rupture strength.But Nb is strong crack sensitivity element.It is 0.06-0.07% to consider steel of the present invention to choose Nb contents.
V：Similar with Nb, V and C, N can form the Second Phase Precipitation thing V (C, N) of small and dispersed.The the second phase chi formed
It is very little when high temperature is long under the conditions of keep stable, be difficult roughening, can effectively improve the creep rupture strength of material.But V is also
Strong crack sensitivity element.It is 0.18-0.20% to consider steel of the present invention to choose V content.
Al：Although it is favourable to the antioxygenic property for improving voxel volume heat resisting steel to add Al elements, Al and N has stronger knot
Tendency is closed, has detrimental effect to the performance that N element in steel is acted on, meanwhile, AlN is also to cause the enhanced master of steel crack sensitivity
Element is wanted, therefore steel of the present invention strictly controls Al content below 0.001%.
N：N, on the one hand with Nb, V-arrangement into carbonitride, can effectively improve creep rupture strength of material etc. in steel,
On the other hand, N is too high can cause the generation of strand rimhole and crackle, therefore N needs to control in an appropriate scope.It is comprehensive
Close and consider that steel of the present invention chooses N content for 0.040-0.050%.
P：P can form microsegregation in solidification of molten steel, and then when austenitizing temperature is heated, segregation, in crystal boundary, makes steel
Fragility significantly increase, so control P content below 0.008%.
S：Inevitable impurity in steel, forms MnS and is mingled with and can deteriorate the toughness of steel in Grain Boundary Segregation, make splitting for steel
Line sensitiveness strengthens, thus controls its content below 0.001%.
O：Oxygen forms various oxides in steel and is mingled with.In the presence of stress, easily produced at these oxide places of being mingled with
Raw stress concentration, causes the germinating of micro-crack, so as to deteriorate the mechanical property of steel.Therefore, it must be taken measures in metallurgical production
Its content is reduced as far as possible.In view of economy, its content is controlled below 0.0020%.
Using the ultra supercritical high-pressure boiler tube of the steel chemical composition of the present invention, technological process and processing parameter production
With steel continuous casting billet, continuous casting billet centre burst rank≤1.0 grade, continuous casting billet centre burst length≤30mm.
Embodiment
With reference to embodiment 1~5 and comparative example 1~2, the present invention is described in detail
A kind of effective steel of ultra supercritical high-pressure boiler, includes the chemical composition of following percentage by weight, as shown in table 2：
The melting chemical composition percentage by weight (wt%) of each embodiment steel of table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| C | 0.10 | 0.08 | 0.12 | 0.09 | 0.085 |
| Si | 0.21 | 0.33 | 0.42 | 0.49 | 0.42 |
| Mn | 0.32 | 0.59 | 0.41 | 0.36 | 0.48 |
| P | 0.008 | 0.007 | 0.005 | 0.006 | 0.004 |
| S | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 |
| Cr | 8.22 | 8.80 | 8.70 | 8.35 | 8.75 |
| Mo | 0.91 | 0.93 | 0.99 | 1.04 | 0.96 |
| Ti | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 |
| Zr | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 |
| N | 0.041 | 0.049 | 0.048 | 0.043 | 0.046 |
| V | 0.18 | 0.20 | 0.19 | 0.20 | 0.19 |
| Nb | 0.06 | 0.06 | 0.07 | 0.07 | 0.06 |
| Als | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 |
| O | 0.001 | 0.002 | 0.001 | 0.001 | 0.001 |
The continuous casting billet of the effective steel of ultra supercritical high-pressure boiler uses following technique productions：
(1) electric arc furnaces or converter smelting；
(2) LF stoves are refined；
(3) RH or VD vacuum outgas；
(4) round billet continuous casting；
(5) continuous casting billet slow cooling；
In the step (4), the bag induction heating technique in, the low overheat of bag molten steel overheat≤10 DEG C in realization
Degree cast, to mitigate component segregation of continuous casting slab and crack sensitivity；Optimize continuous casting billet pulling rate and Water Rate for Secondary Cooling Water, it is ensured that continuous casting billet
Straightening temperature >=900 DEG C；" constant speed casting " is used in production, it is to avoid pulling rate fluctuates widely；Continuous casting is in crystallizer, casting stream, solidifying
Gu three sections of end uses electromagnetic agitating technology, to mitigate Cracks In Continuous Cast Billets sensitiveness；
Enter burial pit in the step (5) after round billet continuous casting in time, it is ensured that enter burial pit temperature >=700 DEG C, go out burial pit
Temperature≤100 DEG C.
The testing result of the processing parameter of each embodiment and obtained continuous casting billet centre burst is as shown in table 3：
The processing parameter and continuous casting billet centre burst testing result of each embodiment of table 3
Comparative example 1
(2) keep the composition of steel in embodiment 4 constant, simply use the continuous casting billet of the effective steel of ultra supercritical high-pressure boiler
Common process is produced, and its production process is：Electric arc furnaces or converter smelting → LF stoves refining → RH or VD vacuum outgas → mould
Casting → round billet or billet continuous casting, in casting process without in bag sensing heating, without three sections of electromagnetic agitation technique → continuous casting billets of continuous casting
Slow cooling.
The P91 continuous casting billets produced according to such a production technology, its centre burst rank >=2.5 grade, centre burst length
>=100mm, the quality of the continuous casting billet of the effective steel of ultra supercritical high-pressure boiler obtained much worse than the present invention.
Comparative example 2
A kind of effective P91 steel of ultra supercritical high-pressure boiler, includes the chemical composition of following percentage by weight：C：0.10%,
Si：0.36%, Mn：0.42%, Cr：9.03%, Mo：0.93%, V：0.22%, Nb：0.09%, Ti：0.003%, Zr：
0.001%, N：0.054%, P：0.013%, S：0.001%, Al：0.013%, O：0.0035%, it is remaining for Fe and it is other can not
The impurity avoided.
The production process be the same as Example 4 of its continuous casting billet, the P91 continuous casting billets produced according to such a production technology, its
Centre burst rank >=2.5 grade, centre burst length >=100mm, the ultra supercritical high-pressure boiler obtained much worse than the present invention
The quality of the continuous casting billet of tube steel.
The continuous casting billet that embodiment 1~5 and comparative example 1~2 are obtained, is further processed into ultra supercritical high-pressure boiler effective
Steel pipe, its specification is Φ 505mm × Φ 75mm, and the tissue morphology and mechanical property of steel pipe is detected, its testing result
As shown in table 4：
The continuous casting billet that each embodiment of table 4 and comparative example are obtained is further processed into the performance test results after steel pipe
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 |
| R under normal temperaturep0.2/MPa | 482 | 497 | 488 | 494 | 481 | 473 | 479 |
| R under normal temperaturem/MPa | 647 | 653 | 641 | 650 | 646 | 614 | 627 |
| A% under normal temperature | 27 | 26 | 28 | 27 | 27 | 25.5 | 24 |
| KV2/J under normal temperature | 201 | 208 | 213 | 215 | 212 | 181 | 171 |
| Grain size/level | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 7.0 | 7.0 |
| R is stretched in short-term at 600 DEG Cp0.2/MPa | 302 | 310 | 317 | 309 | 312 | 283 | 289 |
| R is stretched in short-term at 600 DEG Cm/MPa | 334 | 331 | 344 | 338 | 336 | 316 | 313 |
Above-mentioned reference embodiment is to a kind of effective steel of ultra supercritical high-pressure boiler and its controlling party of continuous casting billet centre burst
The detailed description that method is carried out, is illustrative rather than limited, can include several embodiments according to limited scope,
Therefore changing and modifications in the case where not departing from present general inventive concept, should belong within protection scope of the present invention.
Claims (10)
1. a kind of effective steel of ultra supercritical high-pressure boiler, it is characterised in that：Include the chemical composition of following percentage by weight：C：
0.08~0.12%, Si：0.20~0.50%, Mn：0.30~0.60%, Cr：8.20~8.90%, Mo：0.90~1.05%,
V：0.18~0.20%, Nb：0.06~0.07%, Ti≤0.008%, Zr≤0.008%, N：0.040~0.050%, P≤
0.008%, S≤0.001%, Al≤0.001%, O≤0.0020%, remaining is Fe and other inevitable impurity.
2. the effective steel of ultra supercritical high-pressure boiler according to claim 1, it is characterised in that：Including following percentage by weight
Chemical composition：C：0.085~0.095%, Si：0.40~0.49%, Mn：0.35~0.52%, Cr：8.30~8.80%,
Mo：0.95~1.04%, V：0.18~0.20%, Nb：0.06~0.07%, Ti≤0.002%, Zr≤0.002%, N：
0.043~0.048%, P≤0.008%, S≤0.001%, Al≤0.001%, O≤0.0020%, it is remaining for Fe and it is other can not
The impurity avoided.
3. the effective steel of ultra supercritical high-pressure boiler according to claim 1 or 2, it is characterised in that：Including following weight hundred
Divide the chemical composition of ratio：C：0.09%, Si：0.49%, Mn：0.36%, Cr：8.35%, Mo：1.04%, V：0.20%, Nb：
0.07%, Ti：0.001%, Zr：0.00:1%, N：0.043%, P：0.006%, S：0.001%, Al：0.001%, O：
0.001%, remaining is Fe and other inevitable impurity.
4. a kind of controlling party of the continuous casting billet centre burst of effective steel of ultra supercritical high-pressure boiler according to claim 1
Method, it is characterised in that：The control method comprises the following steps：
(1) electric arc furnaces or converter smelting；
(2) LF stoves are refined；
(3) RH or VD vacuum outgas；
(4) round billet continuous casting；
(5) continuous casting billet slow cooling；
In the step (5), enter burial pit after round billet continuous casting in time, it is ensured that enter burial pit temperature >=700 DEG C, go out burial pit temperature
≤100℃。
5. control method according to claim 4, it is characterised in that：In the step (4), optimization continuous casting billet pulling rate and
Water Rate for Secondary Cooling Water, Water Rate for Secondary Cooling Water is controlled in 0.1~0.15L/kg steel, it is ensured that continuous casting billet straightening temperature >=900 DEG C；Adopted in production
Cast with constant speed, it is to avoid pulling rate fluctuates widely.
6. control method according to claim 5, it is characterised in that：Continuous casting billet pulling rate is set to 0.15~0.60m/min,
The speed of constant speed casting is set to according to specification:Φ 800mm specifications are 0.16m/min, and Φ 700mm specifications are 0.22m/min, Φ
600mm specifications are 0.30m/min, and Φ 500mm specifications are 0.40m/min, and Φ 380mm specifications are 0.58m/min.
7. the control method according to claim 4~6 any one, it is characterised in that：In the step (4), in crystallization
Device, casting stream, three sections of solidification end use electromagnetic agitating technology.
8. the control method according to claim 4~6 any one, it is characterised in that：In the step (4), in
The Prepared by Low Superheat Pouring of bag molten steel overheat≤10 DEG C in bag induction heating technique, realization.
9. the control method according to claim 4~6 any one, it is characterised in that：The specification of the continuous casting billet is Φ
380mm~Φ 800mm.
10. the control method according to claim 4~6 any one, it is characterised in that：The centre burst of the continuous casting billet
Rank≤1.0 grade, centre burst length≤30mm of continuous casting billet.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112338157A (en) * | 2020-10-12 | 2021-02-09 | 马鞍山钢铁股份有限公司 | Billet solidification forming process |
| CN109487155B (en) * | 2018-10-17 | 2021-05-04 | 石家庄钢铁有限责任公司 | Non-quenched and tempered steel for hydraulic rod of high-pressure oil cylinder and production method thereof |
| CN115044823A (en) * | 2022-06-28 | 2022-09-13 | 江苏永钢集团有限公司 | Production process of ultra-supercritical high-pressure boiler steel P92 continuous casting round billet |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0663041B2 (en) * | 1988-08-10 | 1994-08-17 | 住友金属工業株式会社 | Method for manufacturing steel pipe for steam injection |
| CN101088663A (en) * | 2007-07-19 | 2007-12-19 | 天津钢铁有限公司 | Converter process of producing continuously cast circular steel billet for high pressure boiler pipe |
| CN104651754A (en) * | 2015-02-05 | 2015-05-27 | 山东钢铁股份有限公司 | Low alloy steel for high-pressure boiler tube and preparation method thereof |
| CN105886902A (en) * | 2016-06-12 | 2016-08-24 | 河北钢铁股份有限公司承德分公司 | 400MPa-level vanadium-containing anti-seismic anti-corrosion rebar and production method thereof |
| CN106367689A (en) * | 2016-09-29 | 2017-02-01 | 马钢(集团)控股有限公司 | Steel for high-pressure boiler pipe and preparation method for steel |
| CN106636953A (en) * | 2016-10-14 | 2017-05-10 | 中原特钢股份有限公司 | Method for smelting martensitic stainless steel P91 for boiler pipe |
-
2017
- 2017-06-01 CN CN201710405042.7A patent/CN107254639B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0663041B2 (en) * | 1988-08-10 | 1994-08-17 | 住友金属工業株式会社 | Method for manufacturing steel pipe for steam injection |
| CN101088663A (en) * | 2007-07-19 | 2007-12-19 | 天津钢铁有限公司 | Converter process of producing continuously cast circular steel billet for high pressure boiler pipe |
| CN104651754A (en) * | 2015-02-05 | 2015-05-27 | 山东钢铁股份有限公司 | Low alloy steel for high-pressure boiler tube and preparation method thereof |
| CN105886902A (en) * | 2016-06-12 | 2016-08-24 | 河北钢铁股份有限公司承德分公司 | 400MPa-level vanadium-containing anti-seismic anti-corrosion rebar and production method thereof |
| CN106367689A (en) * | 2016-09-29 | 2017-02-01 | 马钢(集团)控股有限公司 | Steel for high-pressure boiler pipe and preparation method for steel |
| CN106636953A (en) * | 2016-10-14 | 2017-05-10 | 中原特钢股份有限公司 | Method for smelting martensitic stainless steel P91 for boiler pipe |
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| CN109487155B (en) * | 2018-10-17 | 2021-05-04 | 石家庄钢铁有限责任公司 | Non-quenched and tempered steel for hydraulic rod of high-pressure oil cylinder and production method thereof |
| CN112338157A (en) * | 2020-10-12 | 2021-02-09 | 马鞍山钢铁股份有限公司 | Billet solidification forming process |
| CN115044823A (en) * | 2022-06-28 | 2022-09-13 | 江苏永钢集团有限公司 | Production process of ultra-supercritical high-pressure boiler steel P92 continuous casting round billet |
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