US20120318411A1 - Cold rolled electromagnetic steel sheet used for rapid cycling synchrotron and producing method thereof - Google Patents
Cold rolled electromagnetic steel sheet used for rapid cycling synchrotron and producing method thereof Download PDFInfo
- Publication number
- US20120318411A1 US20120318411A1 US13/520,405 US201113520405A US2012318411A1 US 20120318411 A1 US20120318411 A1 US 20120318411A1 US 201113520405 A US201113520405 A US 201113520405A US 2012318411 A1 US2012318411 A1 US 2012318411A1
- Authority
- US
- United States
- Prior art keywords
- steel sheet
- cold rolled
- electromagnetic steel
- annealing
- normalizing
- 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.)
- Abandoned
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 54
- 239000010959 steel Substances 0.000 title claims abstract description 54
- 230000001351 cycling effect Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000137 annealing Methods 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 15
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000000047 product Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 238000005097 cold rolling Methods 0.000 claims abstract description 10
- 238000007670 refining Methods 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000005098 hot rolling Methods 0.000 claims abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 4
- 238000005554 pickling Methods 0.000 claims abstract description 4
- 239000011265 semifinished product Substances 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 77
- 229910052742 iron Inorganic materials 0.000 abstract description 37
- 230000006698 induction Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 4
- 239000011572 manganese Substances 0.000 description 15
- 230000005674 electromagnetic induction Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000007423 decrease Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 229910000655 Killed steel Inorganic materials 0.000 description 2
- 238000012356 Product development Methods 0.000 description 2
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000131 polyvinylidene Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910017083 AlN Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000031877 prophase Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- CADICXFYUNYKGD-UHFFFAOYSA-N sulfanylidenemanganese Chemical compound [Mn]=S CADICXFYUNYKGD-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- 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
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Definitions
- the present invention relates to a cold rolled electromagnetic steel sheet, particularly to a cold rolled electromagnetic steel sheet for rapid cycling synchrotron, and a manufacturing method thereof.
- a rapid cycling synchrotron One of the important features of a rapid cycling synchrotron is that the magnetizing current operates in a DC-biased sinusoidal current state, a rapid cycling synchrotron (RCS) with relative high energy is used to accelerate particles to increase the energy; and when a certain requirement for beam energy is obtained, it is drawn from a ring and scattered to a spallation target. Based on characteristics of the device, there are relative high requirements for the cold rolled electromagnetic steel sheets for manufacturing the magnet:
- High electromagnetic induction B50 ⁇ 1.74 T, with the controlling object of 1.75-1.76 T; low iron losses: P15/50 ⁇ 4.7 W/kg, with the controlling object of 3.8-4.2 W/kg, and the iron losses after strain-annealing is P15/50 ⁇ 3.5 W/kg,with the controlling object of 2.8-3.2 W/kg.
- the electromagnetic steel sheets for rapid cycling synchrotron are mainly manufactured by the following method:
- JP H05-247604 discloses a method of tempering (by critical reduction rate) extra-low carbon aluminum killed steel.
- the purpose of critical tempering is to coarsen the grain of the pure iron belt when the user carries out electromagnetic annealing, so that extra-low coercivity can be obtained.
- the drawbacks of the method are that since the critical reduction rate is relative large, which causes strain ageing, so that the hardness of the pure iron belt increases rapidly after being delivered. Thus, it will be difficult for the user to punch the iron belt. And, if the pure iron belt is annealed by a bell type furnace, the performance of the magnet will suffer fluctuation caused by the fluctuation of the pure iron belt in lengthwise.
- a cold rolled electromagnetic steel sheet for rapid cycling synchrotron the composition of which is C 0.001-0.003 wt %, Si 0.60%-0.90 wt %, Mn 0.40%-0.70 wt %, P ⁇ 0.04 wt %, Al 0.60-0.80 wt %, S ⁇ 0.0035 wt %, N ⁇ 0.003 wt %, and the rest of the components are Fe and unavoidable impurities.
- the method for manufacturing a cold rolled electromagnetic steel sheet for rapid cycling synchrotron according to the present invention includes the steps of:
- composition of the present invention is as follows:
- Manganese of 0.40%-0.70% which mainly functions to increase resistivity, to reduce iron losses and meanwhile to change surface condition. If the content of the manganese is too high, it will make the following cold processes difficult, and if the content of the manganese is too low, the iron losses will increase, which results in hot brittle.
- Phosphor of lower than 0.04% which mainly functions to improve processability of the steel sheet.
- the phosphor is a grain boundary polyvinylidene element, if its content is too high, the processability will be degraded, and the coercivity will rise at the same time.
- Aluminum of 0.60%-0.80% which is mainly for increasing resistivity, lowering iron losses, and decreasing the oxidized impurities during steel making, and further increasing electromagnetic induction and lowering coercivity. If the content of aluminum is too high, it will be difficult to carry out pouring during continuous casting, and result in decrease of electromagnetic induction, and if the content of aluminum is too low, the iron losses and the coercivity will be degraded.
- Nitrogen of less than 0.003% If the content of the nitrogen is more than 0.003%, precipitation amount of aluminium nitride will increase that intensively hinders grain growth, and the iron losses and coercivity will be degraded.
- the normalizing temperature will be increased, but if the normalizing temperature is too high, and if the normalizing time is too long, the loss on ignition of the steel will increase, part of the precipitated products from the steel, such as Mn, AIN and the like, are solid solved, which will result dispersion after cold rolling and annealing, so that carbon and nitrogen deposition will be precipitated, which will severely degrade the iron losses and coercivity.
- the normalizing temperature is controlled, the contents of the sulphur and the nitrogen are required to be S ⁇ 0.0035% and N ⁇ 0.003%.
- the average grain size in the steel sheet is more than 40 ⁇ m, preferably is controlled to be between 40-50 ⁇ m.
- the grain size has certain relationship with the coercivity. If the grain is too small, the iron losses will increase, and the coercivity is relatively large. If the grain is too large, area occupied by the gain boundary will decreases, so that the coercivity will decreases at the same time, but the magnetic induction will further decreases.
- the present invention discovers and optimizes the blending ratio of beneficial elements of Si, Mn, Al, and the like to reduce the contents of the impurities, on the basis of one time cold rolling, so that the magnetic induction is further improved.
- the normalizing process and annealing process the coarsening of the precipitated products and the grain is facilitated, so that the iron losses and the coercivity decreases, thus, a cold rolled electromagnetic steel sheet for rapid cycling synchrotron with low iron losses, low coercivity and high magnetic induction is obtained.
- the non-oriented electrical steel is applied in a device called China Spallation Neutron Source Rapid Cycling Synchrotron (CSNS/RCS), which belongs to The Institute of Modern Physics of Chinese Academy of Sciences.
- CSNS/RCS China Spallation Neutron Source Rapid Cycling Synchrotron
- the product has the characteristic of low iron losses and high magnetic induction.
- the successful applying of the present invention will provide solid guarantee in term of raw material for improving the technical level of rapid cycling synchrotron of our country, and broaden the way in product development.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010265803.1 | 2010-08-26 | ||
| CN2010102658031A CN102373367A (zh) | 2010-08-26 | 2010-08-26 | 一种用于快循环同步加速器的冷轧电磁钢板及其制造方法 |
| PCT/CN2011/072709 WO2012024934A1 (zh) | 2010-08-26 | 2011-04-13 | 一种用于快循环同步加速器的冷轧电磁钢板及其制造方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20120318411A1 true US20120318411A1 (en) | 2012-12-20 |
Family
ID=45722851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US13/520,405 Abandoned US20120318411A1 (en) | 2010-08-26 | 2011-04-13 | Cold rolled electromagnetic steel sheet used for rapid cycling synchrotron and producing method thereof |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20120318411A1 (ja) |
| EP (1) | EP2532766A1 (ja) |
| JP (1) | JP2013515857A (ja) |
| CN (1) | CN102373367A (ja) |
| MX (1) | MX2012008269A (ja) |
| RU (1) | RU2012130145A (ja) |
| WO (1) | WO2012024934A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361544B (zh) * | 2012-03-26 | 2015-09-23 | 宝山钢铁股份有限公司 | 无取向硅钢及其制造方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570736A (en) * | 1991-09-25 | 1996-11-05 | Kawasaki Steel Corporation | Process of continuously casting steel using electromagnetic field |
| US6428632B1 (en) * | 1999-11-26 | 2002-08-06 | Kawasaki Steel Corporation | Non-oriented electromagnetic steel sheet having reduced magnetic anisotropy in high frequency region and excellent press workability |
| US20060124207A1 (en) * | 2002-12-05 | 2006-06-15 | Jfe Steel Corporation | Non-oriented magnetic steel sheet and method for production thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0832927B2 (ja) * | 1988-06-04 | 1996-03-29 | 株式会社神戸製鋼所 | 磁束密度の高い無方向性電磁鋼板の製造方法 |
| JPH0814015B2 (ja) * | 1990-01-16 | 1996-02-14 | 日本鋼管株式会社 | 磁気特性および表面性状の優れた無方向性電磁鋼板およびその製造方法 |
| JP3162782B2 (ja) | 1992-03-05 | 2001-05-08 | 川崎製鉄株式会社 | 磁気特性の優れた軟磁性鉄板及びその製造方法 |
| JPH09228005A (ja) * | 1996-02-21 | 1997-09-02 | Nippon Steel Corp | 熱伝導率に優れる高磁束密度低鉄損無方向性電磁鋼板およびその製造方法 |
| JP3458682B2 (ja) * | 1997-11-28 | 2003-10-20 | Ｊｆｅスチール株式会社 | 歪取り焼鈍後の磁気特性に優れる無方向性電磁鋼板およびその製造方法 |
| JPH11236618A (ja) * | 1998-02-24 | 1999-08-31 | Kawasaki Steel Corp | 低鉄損無方向性電磁鋼板の製造方法 |
| JPH11286725A (ja) * | 1998-04-01 | 1999-10-19 | Nippon Steel Corp | 磁性に優れた無方向性電磁鋼板の製造方法 |
| JP3921806B2 (ja) * | 1998-04-24 | 2007-05-30 | Ｊｆｅスチール株式会社 | 方向性珪素鋼板の製造方法 |
| JP2001181806A (ja) * | 1999-10-13 | 2001-07-03 | Nippon Steel Corp | 透磁率に優れた無方向性電磁鋼板とその熱延板およびその製造方法 |
| JP4192403B2 (ja) * | 2000-05-26 | 2008-12-10 | Ｊｆｅスチール株式会社 | 直流偏磁下で使用される電磁鋼板 |
| CN100446919C (zh) * | 2005-06-30 | 2008-12-31 | 宝山钢铁股份有限公司 | 低铁损高磁感冷轧无取向电工钢板的生产方法 |
| CN100546762C (zh) * | 2006-03-22 | 2009-10-07 | 宝山钢铁股份有限公司 | 一种冷轧无取向电工钢板及其生产方法 |
-
2010
- 2010-08-26 CN CN2010102658031A patent/CN102373367A/zh active Pending
-
2011
- 2011-04-13 EP EP11819309A patent/EP2532766A1/en not_active Withdrawn
- 2011-04-13 US US13/520,405 patent/US20120318411A1/en not_active Abandoned
- 2011-04-13 RU RU2012130145/02A patent/RU2012130145A/ru not_active Application Discontinuation
- 2011-04-13 MX MX2012008269A patent/MX2012008269A/es not_active Application Discontinuation
- 2011-04-13 JP JP2012546355A patent/JP2013515857A/ja active Pending
- 2011-04-13 WO PCT/CN2011/072709 patent/WO2012024934A1/zh active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5570736A (en) * | 1991-09-25 | 1996-11-05 | Kawasaki Steel Corporation | Process of continuously casting steel using electromagnetic field |
| US6428632B1 (en) * | 1999-11-26 | 2002-08-06 | Kawasaki Steel Corporation | Non-oriented electromagnetic steel sheet having reduced magnetic anisotropy in high frequency region and excellent press workability |
| US20060124207A1 (en) * | 2002-12-05 | 2006-06-15 | Jfe Steel Corporation | Non-oriented magnetic steel sheet and method for production thereof |
Non-Patent Citations (1)
| Title |
|---|
| Machine translation of CN 1887512, 2007. * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013515857A (ja) | 2013-05-09 |
| RU2012130145A (ru) | 2014-01-27 |
| CN102373367A (zh) | 2012-03-14 |
| MX2012008269A (es) | 2012-11-23 |
| WO2012024934A1 (zh) | 2012-03-01 |
| EP2532766A1 (en) | 2012-12-12 |
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