• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    THE METHOD OF MANUFACTURING STEEL # 1X CASTINGS BY CONTINUOUS CASTING, including the supply of molten steel to the mold through a submersible cup, continuous drawing of the billet and electromagnetic stirring of the liquid steel in the mold and the secondary zone, by means of an alternating current, the alternating blending of the steel in the crystallizer and the secondary zone can be cooled, by means of an alternating current, which is different, and there is one way; quality of castings, electromagnetic mixing is carried out in three zones - in the mold, the intermediate zone and the zone of final solidification of the workpiece, and the steel chamber and the intermediate zone are agitated by a magnetic field, inducing 1M alternating current with frequency f 1.5-10 Hz, with magnetic induction C at the inner surface of the crystallizer or at the surface of the workpiece 195-e-1790-e- "- f, shsh in the intermediate zone mixing is carried out with an alternating current of frequency f 50-60 Hz with magnetic induction G at the surface of the workpiece 0.6 10 LT) -107) 2 - 1.8-10 (j & -100) S where B is the thickness of the hardened crust of the workpiece , and in the final solidification zone, a magnetic field induced by alternating currents is applied with a frequency of 1.510 Hz, with magnetic induction G At the surface of the workpiece in the range of 895e- & 2f -2137-e-2 2. The method according to claim 1, characterized in that the workpiece with dimensions greater than 400 cm, having a molten bath steels with a short diameter less than 100 mm and with dimensions less than 400 cm, having a bath of molten steel with a short diameter less than 1/2 the length of the short side of the workpiece, are exposed to O) a magnetic field induced by an alternating current with a frequency of 1.510 Hz, with magnetic induction G at the surface of the workpiece 895-e 2137 .- 3. Method according to claim 1, characterized by That the molten steel in the SP preform 05 was stirred using a magnetic field induced by current pesl belt 10 with a frequency of 1,500 Hz and having a magnetic induction of G at the inner surface 268-e f G mold: 745-6-. 4. The method according to claims 1 and 3, about t l and the fact that the steel in the workpiece in the intermediate zone is mixed using a magnetic field induced by an alternating current with a frequency of 1.5-10 Hz and its magnetic induction G at the surface of the workpiece 268 -e 745e, or a magnetic field induced by alternating current with a frequency of f 50
    公开号:SU1156587A3
    申请号:SU813279152
    申请日:1981-04-01
    公开日:1985-05-15
    发明作者:Аята Кенцо；Нарита Киихи；Мори Такасуке
    申请人:Кобе Стил,Лтд (Фирма)；
    IPC主号:
    专利说明:

    60 Hz and a magnetic induction of 5 y. The surface of the workpiece is 7.510 (1) -107) G 7.5 -10- (B-100) 2.
    5, the method according to claim 1, about tl and h and y and so that for blanks with a cross section of more than 400 cm liquid steel in
    the crystallizer is stirred with a magnetic field induced by alternating current with a frequency of f 1.5-4 Hz and having a magnetic field G at the inner surface of the crystallizer 195. -1790-6
    The invention relates to metallurgy, namely to continuous casting of steel.. A known method of production with. steel castings by continuous casting, inserting molten steel into the mold through a submersible cup, continuous drawing of the workpiece, and electromagnetic stirring of the molten metal in the crystallizer by inducing a re. A current with a frequency below 15 Hz and in the secondary cooling zone with a frequency of 50 Hz ij. The disadvantage of this method is the low quality of cast steel, since no matching of the frequency and magnetic flux density is proposed, which significantly reduces the reduction of internal defects in the steel. The purpose of the invention is to improve the quality of castings. This goal is achieved in that according to the method of producing steel castings by continuous casting, which involves supplying molten steel to the mold through a dip cup, continuous drawing of the workpiece and electromagnetic stirring of liquid steel in the mold and secondary cooling zone by inducing an alternating current, electromagnetic stirring is performed in three zones in the mold, intermediate eoy and final solidification zone of the workpiece, and in the mold and p In the intermediate zone, stirring is carried out by a magnetic field by 4 alternating currents, often f 1.5–10 Hz, with magnetic induction Cy the inner surface of the mold or at the surface of the workpiece 195.e. –1790 °, or in the intermediate zone the stirring is carried out by the current frequency {50-60 Hz with magnetic induction C, at the surface of the workpiece 0.6-10 CD107) - 1.8 Yu- (D-100) 2, where -. the thickness of the hardened crust of the workpiece, and in the final solidification zone a magnetic field induced by an alternating current with a frequency of f 1.5-10 Hz is applied with magnetic induction (at the surface of the workpiece 895-6 - 2137. On the workpiece with dimensions more than 400 cm, having bath: molten steel with a short diameter of less than 100 mm, and with dimensions less than 400 cm, having a bath of molten steel with a short diameter of less than 1/2 the length of the short side of the workpiece, affected by a magnetic field induced by an alternating current with a frequency of f 1.5-10 Hz, magnetic ind cc with; at the surface of the workpiece 895 "€ -0-2. - 21E7.e-o, d. Liquid steel in the workpiece is moved using a magnetic field induced by an alternating current with a frequency of f 1.5-10 Hz and having a magnetic induction G at the inner surface of the crystallizer 21b8e Q. Liquid steel in the workpiece in the intermediate zone is mixed using a magnetic field induced by an alternating current with a frequency of f 1.510 Hz and having magnetic induction G The surface of the workpiece is 268 xe-0 f G i 745., or magnetic floor induced by alternating current with a frequency of 50-60 Hz and im Q guide the magnetic flux density at the surface of the workpiece 7,5-10 (2-107) 4D4 67,5-10 (D-100) 2.
    31
    In addition, for billets with a cross section of more than 10 cm, the liquid steel in the crystallizer is stirred using a magnetic field induced by an alternating current with a frequency of f 1.54 Hz and having magnetic induction & at the inner surface of the mold 195/6 -1 790-е. Primer p. Low carbon steel was cooked in a converter. After finishing the steel is fed to the installation of continuous casting, where a blank is cast from it. An electromagnetic coil is placed around the outer surface of the crystallizer, which is connected to an alternating current to induce a magnetic field for electromagnetic stirring with a magnitude of magnetic induction G 195-G 1790-е-. Electro: magnetic stirring in the specified conditions ensures the production of equiaxial crystals.
    After electromagnetic stir-. vanilla in the mold billet
    874
    subjected to mixing in an intermediate zone with a frequency of f 1.5-10 Hz and magnetic induction G 195.е G- 1790ie at the surface of the workpiece. This mixing zone helps to reduce inclusions in the axial zone, while at the same time the cold ductility of the metal. In the final solidification zone, a frequency of f 1.510 Hz and magnetic induction G at the surface of the workpiece is applied 895 G 2137) "
    -0.2 f
    Electromagnetic stirring of the bath of molten steel in the final solidification stage serves to disperse the molten steel between the individual grains of equiaxed crystals and, thus, to reduce the temperature gradient.
    In case the electromagnet coil can be close to the workpiece, a frequency of 50-60 Hz with the appropriate magnetic induction is used. Magnetic induction in the range of 268-6 b, i 745 should be used for medium and high carbon steel.
    权利要求:
    Claims (5)
    [1]
    1. METHOD FOR PRODUCING STEEL CASTINGS BY CONTINUOUS CASTING, including the supply of molten steel to the mold through an immersion nozzle, the continuous drawing of the billet and the electromagnetic stirring of molten steel in the mold and the secondary cooling zone by induction by alternating current, characterized in that, in order to improve the quality of castings electromagnetic stirring is carried out in three zones - in the mold, the intermediate zone and the aeon of the final solidification of the workpiece, and in the crystallization Ore and intermediate mixing zone is carried out by a magnetic field induced by an alternating current frequency f 1,5-10 Hz, magnetic induktsieyG at the inner surface of the mold or at the surface of the workpiece 195 · e 0, ief -1790-e, or in the intermediate mixing zone is performed variables current frequency of £ 50-60 Hz with magnetic induction G at the surface of the workpiece 0.6 10 e4 , (D-107) 2 - 1.8-10 ^ (0-100) 2 , where
    On - the thickness of solidified shell preform, and in the final solidification zone is applied magnetic field induced by alternating current with the frequency £ 1,510 Hz, with a magnetic induction at the surface of the workpiece A in the range 895-e- ° -2f -2137-e ° - 2f.
    [2]
    2. The method according to claim 1, characterized in that the workpiece with dimensions greater than 400 cm 2 having a bath of molten steel with a short diameter less than 100 mm, and with dimensions less than 400 cm 2 having a bath of molten steel with a short diameter less than than 1/2 the length of the short side of the workpiece, is affected by a magnetic field induced by alternating current with a frequency of £ 1,510 Hz, with magnetic induction D at the surface of the workpiece 895-e ~ 0.2 2137-e ° ' 2f
    [3]
    3. The method according to claim 1, characterized in that the molten steel in the workpiece is mixed using a magnetic field induced by alternating current with a frequency f of 1.5-
    10 Hz and having a magnetic induction Gy of the inner surface of the crystallizer 268-e 0 ' 1 ® £ G 745-e _zl ' 2 £ .
    [4]
    4. The method according to claims 1 and 3, it is different in that the steel in the billet in the intermediate zone is mixed using a magnetic field induced by alternating current with a frequency of £ 1.5-10 Hz and having magnetic induction X; at the surface of the workpiece 268th ° '18 0745 0.2-e ^, or a magnetic field induced by alternating current at a frequency F I1 50SU 1156587>
    60 Hz and having magnetic induction ζ at the workpiece surface 7.5> 10 s * x (D-1O7) * 4G 4 7.5 · 10-CD-1OO) 2 .
    [5]
    5, The method according to π.1, with the exception that for billets with a cross section of more than 400 cm 1, the liquid steel in the mold is mixed using a magnetic field induced by an alternating current with a frequency of £ 1.5 -4 Hz and having magnetic induction G At the inner surface of the crystallizer 195s-1790s
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    同族专利:
    公开号 | 公开日
    FR2481968B1|1985-03-08|
    GB2073075B|1984-12-05|
    GB2073075A|1981-10-14|
    ES8202062A1|1982-01-16|
    US4637453A|1987-01-20|
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    SE447070B|1986-10-27|
    CA1182619A|1985-02-19|
    US4515203A|1985-05-07|
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    ES501019A0|1982-01-16|
    DE3113192C2|1984-11-29|
    SE8102097L|1981-10-03|
    BR8102004A|1981-10-06|
    FR2481968A1|1981-11-13|
    DE3113192A1|1982-02-18|
    IT8120816D0|1981-03-30|
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    引用文献:
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    DE1962341A1|1969-12-12|1971-06-24|
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    FR2236584B1|1973-05-21|1976-05-28|Siderurgie Fse Inst Rech|
    US3952791A|1974-01-08|1976-04-27|Nippon Steel Corporation|Method of continuous casting using linear magnetic field for core agitation|
    US4106546A|1974-02-27|1978-08-15|Asea Aktiebolag|Method for inductively stirring molten steel in a continuously cast steel strand|
    JPS5326210B2|1974-03-23|1978-08-01|
    FR2279500B1|1974-07-22|1979-10-19|Usinor|
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    US4042007A|1975-04-22|1977-08-16|Republic Steel Corporation|Continuous casting of metal using electromagnetic stirring|
    US4200137A|1975-04-22|1980-04-29|Republic Steel Corporation|Process and apparatus for the continuous casting of metal using electromagnetic stirring|
    FR2338755B1|1976-01-20|1979-07-06|Siderurgie Fse Inst Rech|
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    US3995678A|1976-02-20|1976-12-07|Republic Steel Corporation|Induction stirring in continuous casting|
    SE410153B|1976-05-21|1979-10-01|Asea Ab|STRAND MOLDING FACILITY|
    JPS5316365A|1976-06-17|1978-02-15|Analytical Prod|Gassliquid equilibrium method and its apparatus|
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    LU78944A1|1978-01-25|1979-09-06|Arbed|CONTINUOUS CASTING PROCESS|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP4334080A|JPS56148459A|1980-04-02|1980-04-02|Production of steel material by continuous casting method|
    JP4334180A|JPH0314541B2|1980-04-02|1980-04-02|
    JP4333980A|JPS56148458A|1980-04-02|1980-04-02|Production of steel material by continuous casting method|
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