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1. 发明专利

DE3112880A1 Electromagnetic agitator for use in a continuous steel-casting installation 未知
公开(公告)号：DE3112880A1
公开(公告)日：1982-01-14
申请号：DE3112880
申请日：1981-03-31
申请人： KOBE STEEL LTD
发明人： FUJIWARA KOHICHI , MIYAJIMA KAZUNORI , UCHIMURA MASAHIKO , MIKI KATSUMI , SHIOZAWA TAKEO , TONOUCHI YASURO
IPC分类号： B01F13/08 , B22D11/049 , B22D11/10 , B22D11/115 , B22D27/02 , B22D11/04
摘要： An electromagnetic agitator for use in a continuous steel-casting installation is described, which agitator uses a coil arrangement which is composed of a pair of exciter cage coils, which are operated by means of 2-phase alternating current and each comprise a hollow cable, which encloses a water passage and is folded and arranged in a compact manner.

2. 发明专利

FR2479046A1 未知
公开(公告)号：FR2479046A1
公开(公告)日：1981-10-02
申请号：FR8106466
申请日：1981-03-31
申请人： KOBE STEEL LTD
发明人： FUJIWARA KOHICHI , MIYAJIMA KAZUNORI , MIKI MASAHIKO UCHIMURA KATSUMI , SHIOZAWA TAKEO , TONOUCHI YASURO
IPC分类号： B01F13/08 , B22D11/049 , B22D11/10 , B22D11/115 , B22D27/02

3. 发明专利

JPS56139262A ELECTROMAGNETIC STIRRER IN CONTINUOUS CASTING PLANT 失效
公开(公告)号：JPS56139262A
公开(公告)日：1981-10-30
申请号：JP4235680
申请日：1980-03-31
申请人： KOBE STEEL LTD
发明人： YOSHII KENTA , MIKI KATSUMI , SHIOZAWA TAKEO , INAZAKI SEIJI , MIYAJIMA KAZUNORI
IPC分类号： B01F13/08 , B22D11/10 , B22D11/115 , B22D27/02
摘要： PURPOSE:To ease the turbulence in the corner parts of molten metal and effect smooth horizontal rotating motion and prevent the degradation of steel quality by deviating the position of two pairs of convex magnetic poles in prescribed directions from the central position. CONSTITUTION:If the rotating direction of the molten steel in a mold copper wall 5 is defined as the direction shown by the arrow X, the convex magnetic poles 3a, 3a' of respective long walls 2a, 2a' are deviated toward the rotating direction from the central position and the convex magnetic poles 3b, 3b' of the respective short walls 2b, 2b' are deviated toward the counter-rotation side than the central position. AC of two phases is flowed by having a phase difference of a pi/2 electrical angle is flowed in the respective magnetic coils 4a, 4b of the respective convex magnetic poles. Hence, the magnetic field from the center to the corner part direcrion is stronger in the two corner parts and the strong magnetic force acts in the direction perpendicular to the direction of the magnetic field, that is, in the direction deviating from said corners, hence the inclusion of the molten steel is eased and the overall rotating motion is made smooth. Hence, the abrasion of the corner parts of the mold copper walls is eased and white bands are prevented.

4. 发明专利

JPS56139264A MOLTEN STEEL STIRRING METHOD IN CONTINUOUS CASTING PLANT 失效
公开(公告)号：JPS56139264A
公开(公告)日：1981-10-30
申请号：JP4329280
申请日：1980-04-01
申请人： KOBE STEEL LTD
发明人： YOSHII KENTA , MIKI KATSUMI , FUJIWARA KOUICHI , INAZAKI SEIJI , MIYAJIMA KAZUNORI
IPC分类号： B01F13/08 , B22D11/10 , B22D11/115 , B22D27/02
摘要： PURPOSE:To flow molten steel ingot smoothly by superposing the 3rd higher harmonic wave on each of two phases of basic waves having a phase difference. CONSTITUTION:Combined wave currents Iu, Iv, of two phases having a phase difference of a pi/2 electrical angle are flowed to electromagnetic coil 4a, 4b. The current of the (u) phase is the combined wave comprising superposing the 3rd higher harmonic wave Iu2 on the basic wave Iu so as to generate two maximum currents or two minimum current at every electrical angle pi. The current of the (v) phase is the combined wave comprising superposing the 3rd higher harmonic wave Iv2 on the basic wave Iv1 so as to generate two maximum currents or two minimum currents at every electrical angle pi. Electromagnetic forces act in a clockwise direction along with the rotating magnetic field and consequently, the molten steel rotates horizontally in a clockwise direction. In each corner part, the relatively strong magnetic forces are acted in the direction of deviating from each corner part and therefore the inclusion in the corner parts is eased.

5. 发明专利

JPS6458414A CONTROLLER FOR FLYING SHEAR 失效
公开(公告)号：JPS6458414A
公开(公告)日：1989-03-06
申请号：JP20933387
申请日：1987-08-25
申请人： KOBE STEEL LTD
发明人： MIYAJIMA KAZUNORI , HAYATA SHUICHI , ASHIDA YOICHI
IPC分类号： B23D36/00
摘要： PURPOSE:To secure a constant length in cutting and improve yield and reduce troubles by installing a means for controlling the drive of a rotary cutting tool on the basis of the difference between a set length and a length measured by a length measuring means for a short material simultaneously with the cut of a long material. CONSTITUTION:In a cutting process, a calculation control part 10 detects that the top edge of a rod steel 1 passes through directly under the rotary cutting tools 4 and 5 and reaches a position S1 on the little passing side by a passing- side HMD 8, and a gate 11 is opened, and the pulse of a pulse generator 7 is counted by a counter 12 from the opening time, and it is detected from the marker signal of the generator 7 that the cutting tools 4 and 5 are set at the opposed positions. Then, the gate 11 is closed, and counting is suspended, and the crop length L is calculated by a calculator 13 from the counting value. Then, the calculated crop length L is compared with a standard value set by a setting switch 15, in a comparator 16, and if a difference exists, an output is transmitted to the rotary cutting tool drive controller 6 so that the next connection timing of the cutting tools 4 and 5 is changed, and control is performed to obtain the constant length L.

6. 发明专利

JPS6372415A SPEED CONTROL METHOD FOR ROLLING MILL 失效
公开(公告)号：JPS6372415A
公开(公告)日：1988-04-02
申请号：JP21495086
申请日：1986-09-11
申请人： KOBE STEEL LTD
发明人： ASHIDA YOICHI , OTA FUKUO , MIYAJIMA KAZUNORI
IPC分类号： B21B37/46 , B21B37/00 , B21B37/78
摘要： PURPOSE:To prevent generation of a loop at rear end passage by giving a finishing rolling mill driving motor a speed variation canceling a speed increase of a rolled stock due to a sectional shape variation in the stock rear end rolling when the stock rear end reaches a prescribed position in a finishing rolling mill. CONSTITUTION:Passage of a wire stock rear end is detected by a 1st wire stock rear end detector 9 and a passing position and time of the rear end are tracked based on the above detection signal and a speed signal of an upstream stand 8. When the rear end reaches a proper position in a finishing rolling mill 6, a rotation reducing control signal is outputted, a rotation reducing signal contact 17 is closed, a rotation reducing amount set by a rotation reducing signal setter 18 is converted into a ramp function by a ramp function generator 19 and the ramp function is inputted to a speed control circuit 20 to reduce the number of rotations of a driving motor 7 through an ASR 21 and an ACR 22 based on the above tracking. Then, passage of the rear end through the mill 6 is detected by a 2nd wire stock rear end detector 10, a rotation reset control signal is outputted to open the contact 17 and to return the number of rotations of the motor 7 to the former set rotations.

7. 发明专利

JPS56139265A ELECTROMAGNETIC STIRRER IN CONTINUOUS CASTING PLANT 失效
公开(公告)号：JPS56139265A
公开(公告)日：1981-10-30
申请号：JP4329380
申请日：1980-04-01
申请人： KOBE STEEL LTD
发明人： FUJIWARA KOUICHI , MIYAJIMA KAZUNORI , UCHIMURA MASAHIKO , MIKI KATSUMI , SHIOZAWA TAKEO , TONOUCHI YASUROU
IPC分类号： B01F13/08 , B22D11/049 , B22D11/10 , B22D11/115 , B22D27/02
摘要： PURPOSE:To decrease the space occupied by coils and eliminate the need for any special device for cooling the coils by constituting an electromagnetic coil by combining two cage type coils. CONSTITUTION:Two cage type coils 1a, 1b are combined in such a way that respective perpendicular parts 2a, 2b, 2a', 2b' form the perpendicular faces on four sides and the upper and lower horizontal part 3a', 3b', 4a', 4b' of the coil 1b stuck on the inner side of the upper and lower horizontal parts 3a, 3b, 4a, 4b of the other cage type coil 1a. An iron core 3 is mounted to the circumference of an electromagnetic coil 1 comprising combining these coils 1a, 1b. If the sinusoidal AC having a phase difference of an approximately pi/2 electrical angle is flowed to each of the above-mentioned cage type coils 1a, 1b, a rotating magnetic field is generated in mold copper walls 2 or the molten steel of a steel ingot, and horizontal rotating motion is given to the molten steel by this rotating magnetic field. The conductors of each cage type coil are hollowed, and the hollow parts serve as cooling water passages.

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