RU2015128023A - Текстурированный лист электротехнической стали - Google Patents
Текстурированный лист электротехнической стали Download PDFInfo
- Publication number
- RU2015128023A RU2015128023A RU2015128023A RU2015128023A RU2015128023A RU 2015128023 A RU2015128023 A RU 2015128023A RU 2015128023 A RU2015128023 A RU 2015128023A RU 2015128023 A RU2015128023 A RU 2015128023A RU 2015128023 A RU2015128023 A RU 2015128023A
- Authority
- RU
- Russia
- Prior art keywords
- electrical steel
- textured electrical
- steel sheet
- textured
- sheet
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14775—Fe-Si based alloys in the form of sheets
-
- 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
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1255—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest with diffusion of elements, e.g. decarburising, nitriding
-
- 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
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
-
- 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
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
-
- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
-
- 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
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/05—Grain orientation
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Power Engineering (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Claims (5)
1. Лист текстурированной электротехнической стали, отличающийся тем, что лист содержит Si: 2-5 мас. %, и имеет множество пиков в распределении угла дезориентации между ориентацией кристаллов вторично рекристаллизованной текстуры и ориентацией Госса, причем размер зерен вторично рекристаллизованной текстуры составляет не более 15 мм.
2. Лист текстурированной электротехнической стали по п. 1, где угол дезориентации для второго небольшого пика среди множества пиков составляет не меньше, чем 5°.
3. Лист текстурированной электротехнической стали по п. 1 или 2, который содержит С: меньше, чем 0,005 мас. % и Mn: 0,005-1,0 мас. %, дополнительно к Si.
4. Лист текстурированной электротехнической стали по п. 1 или 2, который содержит один или больше элементов, выбранных из Ni: 0,010-1,50 мас. %, Cr: 0,01-0,50 мас. %, Cu: 0,01-0,50 мас. %, Р: 0,005-0,50 мас. %, Sn: 0,005-0,50 мас. %, Sb: 0,005-0,50 мас. %, Bi: 0,005-0,50 мас. % и Мо: 0,005-0,100 мас. %, кроме указанных выше компонентов.
5. Лист текстурированной электротехнической стали по п. 3, который содержит один или больше элементов, выбранных из Ni: 0,010-1,50 мас. %, Cr: 0,01-0,50 мас. %, Cu: 0,01-0,50 мас. %, Р: 0,005-0,50 мас. %, Sn: 0,005-0,50 мас. %, Sb: 0,005-0,50 мас. %, Bi: 0,005-0,50 мас. % и Мо: 0,005-0,100 мас. %, кроме указанных выше компонентов.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012271080A JP5871137B2 (ja) | 2012-12-12 | 2012-12-12 | 方向性電磁鋼板 |
JP2012-271080 | 2012-12-12 | ||
PCT/JP2013/083150 WO2014092102A1 (ja) | 2012-12-12 | 2013-12-11 | 方向性電磁鋼板 |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2015128023A true RU2015128023A (ru) | 2017-01-16 |
RU2608914C2 RU2608914C2 (ru) | 2017-01-26 |
Family
ID=50934390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2015128023A RU2608914C2 (ru) | 2012-12-12 | 2013-12-11 | Текстурированный лист электротехнической стали |
Country Status (7)
Country | Link |
---|---|
US (1) | US10643770B2 (ru) |
EP (1) | EP2933348B1 (ru) |
JP (1) | JP5871137B2 (ru) |
KR (1) | KR101755958B1 (ru) |
CN (2) | CN104838028B (ru) |
RU (1) | RU2608914C2 (ru) |
WO (1) | WO2014092102A1 (ru) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5854233B2 (ja) * | 2013-02-14 | 2016-02-09 | Jfeスチール株式会社 | 方向性電磁鋼板の製造方法 |
WO2015174362A1 (ja) * | 2014-05-12 | 2015-11-19 | Jfeスチール株式会社 | 方向性電磁鋼板の製造方法 |
RU2674502C2 (ru) * | 2014-10-06 | 2018-12-11 | ДжФЕ СТИЛ КОРПОРЕЙШН | Лист текстурированной электротехнической стали с низкими потерями в железе и способ его изготовления |
KR101675318B1 (ko) * | 2015-12-21 | 2016-11-11 | 주식회사 포스코 | 방향성 전기강판 및 이의 제조방법 |
CN110720130B (zh) * | 2017-05-17 | 2023-02-03 | Crs控股有限责任公司 | Fe-Si基合金及其制造方法 |
KR102478773B1 (ko) * | 2018-02-26 | 2022-12-20 | 닛폰세이테츠 가부시키가이샤 | 방향성 전자 강판 |
CN110257700A (zh) * | 2019-06-02 | 2019-09-20 | 郭慧敏 | 一种取向硅钢钢带或钢板的制造方法 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60245796A (ja) * | 1984-05-16 | 1985-12-05 | ミネメ・ルシエルシユ | 電気分解による亜鉛抽出方法を特に意図したパ−ジ溶液の処理方法 |
JPH0680172B2 (ja) * | 1984-05-19 | 1994-10-12 | 川崎製鉄株式会社 | 鉄損の低い方向性けい素鋼板およびその製造方法 |
JPS63105926A (ja) * | 1986-10-23 | 1988-05-11 | Kawasaki Steel Corp | 一方向性けい素鋼板の製造方法 |
JPH0230740A (ja) * | 1988-04-23 | 1990-02-01 | Nippon Steel Corp | 鉄損の著しく優れた高磁束密度一方向性電磁鋼板及びその製造方法 |
JP2983128B2 (ja) | 1993-08-24 | 1999-11-29 | 新日本製鐵株式会社 | 極めて低い鉄損をもつ一方向性電磁鋼板の製造方法 |
IT1284268B1 (it) | 1996-08-30 | 1998-05-14 | Acciai Speciali Terni Spa | Procedimento per la produzione di lamierino magnetico a grano orientato, con elevate caratteristiche magnetiche, a partire da |
JP3392664B2 (ja) * | 1996-10-31 | 2003-03-31 | 新日本製鐵株式会社 | 極めて低い鉄損をもつ一方向性電磁鋼板の製造方法 |
JP3456862B2 (ja) | 1997-04-25 | 2003-10-14 | 新日本製鐵株式会社 | 極めて低い鉄損をもつ一方向性電磁鋼板の製造方法 |
JP4106815B2 (ja) * | 1999-06-21 | 2008-06-25 | Jfeスチール株式会社 | 方向性珪素鋼板およびその製造方法 |
JP4598320B2 (ja) * | 2001-07-12 | 2010-12-15 | 新日本製鐵株式会社 | 方向性電磁鋼板の製造方法 |
WO2006132095A1 (ja) | 2005-06-10 | 2006-12-14 | Nippon Steel Corporation | 磁気特性が極めて優れた方向性電磁鋼板及びその製造方法 |
JP2007314826A (ja) * | 2006-05-24 | 2007-12-06 | Nippon Steel Corp | 鉄損特性に優れた一方向性電磁鋼板 |
US7942982B2 (en) | 2006-11-22 | 2011-05-17 | Nippon Steel Corporation | Grain-oriented electrical steel sheet excellent in coating adhesion and method of producing the same |
JP5439866B2 (ja) * | 2008-03-05 | 2014-03-12 | 新日鐵住金株式会社 | 著しく磁束密度が高い方向性電磁鋼板の製造方法 |
JP5428188B2 (ja) * | 2008-04-15 | 2014-02-26 | 新日鐵住金株式会社 | 方向性電磁鋼板の製造方法 |
US20120131982A1 (en) * | 2009-07-31 | 2012-05-31 | Jfe Steel Corporation | Grain oriented electrical steel sheet |
JP4840518B2 (ja) * | 2010-02-24 | 2011-12-21 | Jfeスチール株式会社 | 方向性電磁鋼板の製造方法 |
JP5853352B2 (ja) * | 2010-08-06 | 2016-02-09 | Jfeスチール株式会社 | 方向性電磁鋼板およびその製造方法 |
JP5772410B2 (ja) * | 2010-11-26 | 2015-09-02 | Jfeスチール株式会社 | 方向性電磁鋼板の製造方法 |
JP5835557B2 (ja) * | 2011-02-17 | 2015-12-24 | Jfeスチール株式会社 | 方向性電磁鋼板の製造方法 |
JP5839172B2 (ja) * | 2011-02-24 | 2016-01-06 | Jfeスチール株式会社 | 方向性電磁鋼板の製造方法 |
JP5988027B2 (ja) * | 2011-07-28 | 2016-09-07 | Jfeスチール株式会社 | 極薄方向性電磁鋼板の製造方法 |
-
2012
- 2012-12-12 JP JP2012271080A patent/JP5871137B2/ja active Active
-
2013
- 2013-12-11 EP EP13862090.1A patent/EP2933348B1/en active Active
- 2013-12-11 RU RU2015128023A patent/RU2608914C2/ru active
- 2013-12-11 KR KR1020157010707A patent/KR101755958B1/ko active IP Right Grant
- 2013-12-11 US US14/437,743 patent/US10643770B2/en active Active
- 2013-12-11 CN CN201380063743.7A patent/CN104838028B/zh active Active
- 2013-12-11 CN CN202010987608.3A patent/CN112195399A/zh active Pending
- 2013-12-11 WO PCT/JP2013/083150 patent/WO2014092102A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP2933348B1 (en) | 2018-11-28 |
KR101755958B1 (ko) | 2017-07-07 |
CN112195399A (zh) | 2021-01-08 |
EP2933348A4 (en) | 2016-03-23 |
CN104838028B (zh) | 2020-10-23 |
JP2014114499A (ja) | 2014-06-26 |
US10643770B2 (en) | 2020-05-05 |
KR20150060912A (ko) | 2015-06-03 |
JP5871137B2 (ja) | 2016-03-01 |
WO2014092102A1 (ja) | 2014-06-19 |
CN104838028A (zh) | 2015-08-12 |
US20150318090A1 (en) | 2015-11-05 |
EP2933348A1 (en) | 2015-10-21 |
RU2608914C2 (ru) | 2017-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
RU2015128023A (ru) | Текстурированный лист электротехнической стали | |
WO2017111548A8 (ko) | 무방향성 전기강판 및 그 제조방법 | |
RU2018125708A (ru) | Сплав специальной латуни и продукт из этого сплава | |
RU2017143965A (ru) | Кристаллы флумиоксазина | |
MX2017002415A (es) | Lamina de acero electrico de grano no orientado y metodo de fabricacion para la misma. | |
RU2015145284A (ru) | Лист из нетекстурированной электротехнической стали с отличными потерями в железе на высокой частоте | |
RU2015105718A (ru) | Способ изготовления листа электротехнической текстурированной стали | |
WO2011003857A3 (de) | Zusatzwerkstoff zum löten von blechen | |
RU2012107393A (ru) | Лист электротехнической стали с ориентированными зернами | |
RU2015143615A (ru) | Лист из нетекстурированной электротехнической стали с превосходными магнитными свойствами | |
PH12017500731B1 (en) | Structural steel material having excellent atmospheric corrosion resistance | |
WO2015092549A3 (en) | Biologicals for plants | |
WO2017111550A8 (ko) | 마그네슘 합금 판재, 및 그 제조방법 | |
WO2018074896A3 (ko) | 고성형 마그네슘 합금 판재 및 이의 제조방법 | |
MY153707A (en) | Steel material having excellent atmospheric corrosion resistance | |
EP4029886A3 (en) | Ethylene/alpha-olefin/polyene interpolymers and compositions containing the same | |
SG11202110172RA (en) | Cryptocurrency exchange traded product | |
WO2016137862A3 (en) | Electrical tracking resistance compositions, articles formed therefrom, and methods of manufacture thereof | |
PH12017500676B1 (en) | Steel sheet for crown cap, manufacturing method therefor, and crown cap | |
RU2022115206A (ru) | Композиты плинабулина | |
WO2016104981A3 (ko) | Fe-P-Cr 합금 박판 및 그 제조방법 | |
TH176966B (th) | แผ่นเหล็กกล้ารีดร้อน | |
Strey et al. | Turf-type Tall Fescue Cultivar Study | |
TH168691B (th) | แผ่นเหล็กกล้าสำหรับงานไฟฟ้าชนิดนอน-โอเรียนท์ และ วิธีการผลิตสิ่งนั้น | |
TH176966A (th) | แผ่นเหล็กกล้ารีดร้อน |