KR100431844B1 - A method of charging slab in a continuous heating furnace - Google Patents
A method of charging slab in a continuous heating furnace Download PDFInfo
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- KR100431844B1 KR100431844B1 KR10-1999-0061560A KR19990061560A KR100431844B1 KR 100431844 B1 KR100431844 B1 KR 100431844B1 KR 19990061560 A KR19990061560 A KR 19990061560A KR 100431844 B1 KR100431844 B1 KR 100431844B1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/38—Arrangements of devices for charging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/38—Arrangements of devices for charging
- F27B2009/382—Charging
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
Abstract
본 발명의 워킹빔방식 연속가열로의 슬라브장입방법은 복수개의 슬라브가 푸셔에 의해 장입되고 진행하여 가열되는 워킹빔방식 가열로에 있어서, 슬라브의 압연예상시간을 계산하여 재로시간을 예측하는 단계와, 예측된 재로시간과 슬라브의 목표재로시간을 비교하여 예상재로시간을 수정하는 단계와, 수정된 예상재로시간을 기초로하여 장입간격을 결정하는 단계와, 결정된 장입간격을 기초로해서 푸셔스트로크를 계산하여 계산된 푸셔스트로크에 따라 슬라브를 가열로내로 장입시키는 단계로 구성된다.In the slab charging method of the working beam continuous heating furnace of the present invention, in the walking beam heating furnace in which a plurality of slabs are charged by the pusher and proceeded to heating, calculating the expected rolling time of the slab and estimating the shelf time. Comparing the predicted working time with the target working time of the slab, correcting the expected working time, determining a charging interval based on the modified expected working time, and based on the determined charging interval. Calculating the pusher stroke and charging the slab into the furnace according to the calculated pusher stroke.
Description
본 발명은 워킹빔 연속가열로에서의 슬라브 장입방법에 관한 것으로, 특히 장입 슬라스별 재로시간을 목표시간에 근사시킴으로써 과다재로시간에 의한 스케일의 손실을 방지하고 과소재로시간에 의한 작업지연을 방지할 수 있는 워킹빔 연속가열로에서의 슬라브 장입방법에 관한 것이다.The present invention relates to a slab charging method in a working beam continuous heating furnace, and in particular, by approximating the reload time for each charging slab to a target time, to prevent loss of scale due to excessive rework time, and to reduce the work delay due to the over material overtime. It relates to a slab charging method in a working beam continuous heating furnace that can be prevented.
일반적으로 워킹빔(working beam)형의 연속가열로에서는 가열되는 재료를 연속적으로 장입한다. 도 1에 이러한 워킹빔형의 연속가열방식이 도시되어 있다. 도면에 도시된 바와 같이, 복수로 배치된 워킹빔(1)에 푸셔(3)를 이용하여 외부로부터 슬라브(S)를 장입하면, 워킹빔(1)의 작동에 의해 상기 슬라브(S)가 가열로의 출구쪽으로 이동하여 추출된다. 추출된 슬라브(S)는 도 2에 도시된 바와 같이 압연롤(7)에 입력되어 열연강판으로 된다.In general, in a continuous heating furnace of a working beam type (charging), the material to be heated is continuously charged. 1 shows a continuous heating method of such a walking beam type. As shown in the figure, when the slab S is charged from the outside using the pusher 3 to the plurality of working beams 1 arranged, the slab S is heated by the operation of the working beam 1. Extracted by moving to the exit of the furnace. The extracted slab S is input to the rolling roll 7 as shown in FIG. 2 to form a hot rolled steel sheet.
연속가열로에는 복수의 슬라브(S)가 장입되며, 워킹빔(1)이 작동함에 따라 워킹빔(1) 위의 슬라브(S)가 가열되면서 진행되어 추출된 후 압연롤(7)에 입력된다. 이러한 작동은 연속적으로 일어난다. 워킹빔(1)이 작동하여 슬라브(S)가 출구쪽으로 진행함과 동시에 입구쪽에서는 푸셔(3)에 의해 새로운 슬라브(S)가 장입된다. 위킹빔(1) 위로 진행되는 이러한 슬라브(S)들은 설정 간격(G)을 갖는다. 도면에 도시된 종래의 연속가열로에서는 슬라브(S)가 약 50∼200mm의 일정한 간격을 두고 장입되고 있다.A plurality of slabs S are charged in the continuous heating furnace, and the slabs S on the working beams 1 are heated and extracted as the working beams 1 operate and are extracted and then input to the rolling rolls 7. . This operation occurs continuously. The working beam 1 is operated so that the slab S proceeds toward the exit and at the same time, the new slab S is charged by the pusher 3 at the entrance. These slabs S running over the wicking beam 1 have a set interval G. In the conventional continuous heating furnace shown in the drawing the slab (S) is charged at regular intervals of about 50 ~ 200mm.
일반적으로 연속가열로로 장입되는 소재는 두께, 폭, 길이가 다양하고 압연시 1매당 작업되는 시간(즉, 압연시간, 압연피티) 역시 다양하다. 장입되는 소재(슬라브)의 추출시 재로시간은 장입될 때의 앞에 작업되는 소재들의 압연시간과 가열로내의 소재매수에 의해 결정된다. 장입시 가열로에 있는 소재들의 매수가 많거나 각 소재가 압열될 때 압연시간이 긴 소재가 많을 경우에는 재로시간이 증가하여 스케일(scale) 손실분이 증가하여 제품생산량이 감소하게 되어 수익이 감소한다. 또한, 필요 이상의 열량이 소재에 공급되기 때문에 가열로의 연료소모가 증가하게 된다.In general, materials loaded into continuous heating furnaces vary in thickness, width, and length, and the time worked per sheet during rolling (ie, rolling time, rolling pit) also varies. The reloading time in the extraction of the charged material (slab) is determined by the rolling time of the materials working before the charging and the number of materials in the furnace. If the number of materials in the furnace at the time of charging is high or if there are many materials with long rolling time when each material is sintered, the length of time is increased, the scale loss is increased, and the production is reduced and the profit is decreased. . In addition, fuel consumption of the heating furnace is increased because more heat than necessary is supplied to the material.
또한, 소재들이 장입될 때 가열로내 소재들의 압연시간이 짧거나 소재매수가 작을 경우에는 재로시간이 짧기 때문에 숙열이 되지 않게 되어 압연이 불가능하게 된다. 이러한 것을 방지하기 위해서는 소재의 추출을 중단하고 가열을 더욱 진행시켜야만 하기 때문에, 가열대기가 발생하게 되어 압연중단으로 인한 생산이 중단되는 문제가 있었다.In addition, when materials are charged, when the rolling time of the materials in the furnace is short or the number of materials is small, the ashing time is short, so that the rolling is not possible and the rolling is impossible. In order to prevent this, it is necessary to stop the extraction of the material and proceed with further heating, and thus there is a problem in that the production of the heating is stopped due to the heating atmosphere.
본 발명은 상기한 문제를 해결하기 위한 것으로, 슬라브의 재로시간을 목표재로시간과 근사시킴으로써 과다재로시간에 의한 스케일손실을 방지하고 과소재로시간에 의한 작업지연을 방지할 수 있는 워킹빔 연속가열로의 슬라브장입방법을 제공하는 것을 목적으로 한다.The present invention is to solve the above problems, by approximating the slab time to the target time, the working beam which can prevent the scale loss due to excessive rework time and prevent work delay due to overwork time An object of the present invention is to provide a slab charging method for a continuous heating furnace.
상기한 목적을 달성하기 위해, 본 발명에 따른 슬라브장입방법은 복수개의 슬라브가 푸셔에 의해 장입되고 진행하여 가열되는 워킹빔방식 가열로에 있어서, 슬라브의 압연예상시간을 계산하여 재로시간을 예측하는 단계와, 예측된 재로시간과 슬라브의 목표재로시간을 비교하여 예상재로시간을 수정하는 단계와, 상기 수정된 예상재로시간을 기초로하여 장입간격을 결정하는 단계와, 상기 결정된 장입간격을 기초로해서 푸셔스트로크를 계산하여 계산된 푸셔스트로크에 따라 슬라브를 가열로내로 장입시키는 단계로 구성된다.In order to achieve the above object, the slab charging method according to the present invention is to calculate the expected time of the slab by calculating the expected rolling time of the slab in the heating beam type heating furnace in which a plurality of slabs are charged by the pusher and proceed to heating. Comprising the steps, and comparing the predicted reload time and the target reload time of the slab to correct the expected reload time, determining the charging interval based on the modified expected reload time, and the determined charging interval Calculating the pusher stroke on the basis of the method and charging the slab into the furnace according to the calculated pusher stroke.
상기 재로시간의 예측, 수정 및 장입간격은 각각 다음의 수학식에 의해 계산된다.The prediction, correction and charging intervals of the idle time are respectively calculated by the following equations.
단, 여기서 P1은 가장 나중에 장입된 슬라브(S1)의 예상압연시간, P2는 S1 이전에 장입된 슬라브(S2)의 압연예상시간, P(N)은 장입된 슬라브중에서 추출대기상태에 있는 슬라브(Sn)의 압연예상시간, DTT는 목표재로시간 대비 예상재로시간차, b는 축소 혹은 확대계수, M0는 슬라브의 장입필요매수, L은 가열로의 유효로장의 길이, Wt는 슬라브 1매당 필요한 폭이다.Where P1 is the expected rolling time of the last loaded slab (S1), P2 is the expected rolling time of the slab (S2) loaded before S1, and P (N) is the slab in the extraction standby state among the loaded slabs ( Sn) Expected time of rolling, D TT is the time difference between the target material and the expected material time, b is the reduction or enlargement factor, M 0 is the number of sheets required for the slab, L is the length of the effective furnace length of the furnace, and W t is the slab It is necessary width per sheet.
도 1은 종래의 워킹빔방식 연속가열로에서의 슬라브 장입방법을 나타내는 도면.1 is a view showing a slab charging method in a conventional working beam type continuous heating furnace.
도 2는 종래의 워킹빔방식 연속가열로에서의 추출된 슬라브가 압연롤에 의해 압연되는 것을 나타내는 도면.2 is a view showing that the extracted slab is rolled by a rolling roll in a conventional working beam type continuous heating furnace.
도 3은 본 발명에 따른 워킹빔방식 연속가열로에서의 슬라브 장입방법을 나타내는 도면.3 is a view showing a slab charging method in a working beam continuous heating furnace according to the present invention.
도 4(a)는 종래 워킹빔방식 연속가열로에서 가열로로부터 추출되는 슬라브의 갯수와 재로시간의 관계를 나타내는 그래프.Figure 4 (a) is a graph showing the relationship between the number of slabs extracted from the heating furnace in the conventional working beam type continuous heating furnace and the ashing time.
도 4(b)는 본 발명에 따른 워킹빔방식 연속가열로에서 가열로로부터 추출되는 슬라브의 갯수와 재로시간의 관계를 나타내는 그래프.Figure 4 (b) is a graph showing the relationship between the number of slabs extracted from the heating furnace in the working beam type continuous heating furnace according to the present invention and the ashing time.
- 도면의 주요부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawings-
1 : 워킹빔 3 : 푸셔1: walking beam 3: pusher
10 : 푸셔제어부 12 : 푸셔스트로크 계산부10: pusher control unit 12: pusher stroke calculation unit
14 : 장입간격 결정부 16 : 수정재로시간 계산부14: charging interval determination unit 16: correction dead time calculation unit
18 : 재로시간 예측부18: time prediction unit
S : 슬라브S: Slavic
G : 슬라브간격G: Slab spacing
이하, 첨부한 도면을 참조하여 본 발명에 따른 워킹빔방식 연속가열로에서의 슬라브 장입방법을 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a slab charging method in a working beam type continuous heating furnace according to the present invention.
도 2는 본 발명에 따른 워킹빔방식 연속가열로를 나타내는 도면이다. 도면에 도시된 바와 같이, 본 발명에 따른 워킹빔방식 연속가열로의 구성은 종래의 구성과 동일하다. 그러나, 종래의 워킹빔방식 연속가열로에서는 동일한 시간의 푸셔(3) 작동에 의해 슬라브(S)가 가열로 내부로 동일한 간격으로 장입되지만 본 발명의 워킹빔방식 연속가열로에서는 슬라브(S) 사이의 간격(S)이 서로 다르게 되도록 푸셔(3)의 스트로크 시간을 조정한다.2 is a view showing a working beam type continuous heating furnace according to the present invention. As shown in the figure, the configuration of the working beam continuous heating furnace according to the present invention is the same as the conventional configuration. However, in the conventional working beam continuous heating furnace, the slab (S) is charged into the heating furnace at the same interval by the operation of the pusher (3) at the same time, but in the working beam continuous heating furnace of the present invention between the slabs (S). The stroke time of the pusher 3 is adjusted so that the intervals S of are different from each other.
이러한 푸셔(3)의 스트로크 조정을 위해, 도면에 도시된 바와 같은 조정수단을 구비하고 있다. 그 구성을 살펴보면, 상기 조정수단은 슬라브(S)의 장입시 슬라브(S)의 압연예상시간을 계산하여 재로시간을 예측하는 재로시간 예측부(18)와, 예측된 재로시간과 소재의 가열 및 압연에 적당한 목표 재로시간을 비교하여 예상재로시간을 변경하는 수정재로시간 계산부(16)와, 상기 수정재로시간 계산부(16)로부터 입력된 수정재로시간을 기초로하여 장입간격을 결정하는 장입간격 결정부(14)와, 상기 장입간격 결정부(14)에서 결정된 장입간격을 따라 푸셔(3)로 슬라브(S)를 장입시키는 장입제어부(10)로 구성된다.For adjusting the stroke of the pusher 3, an adjusting means as shown in the figure is provided. Looking at the configuration, the adjustment means is calculated by calculating the expected rolling time of the slab (S) at the time of charging the slab (Ship time prediction unit 18), and the predicted ash time and heating of the material and Based on the correction furnace time input from the correction furnace time calculation unit 16 and the correction furnace time calculation unit 16 for comparing the target furnace time suitable for rolling and changing the expected furnace time. A charging interval determining unit 14 for determining the charging interval, and a charging control unit 10 for charging the slab S with the pusher 3 along the charging interval determined by the charging interval determining unit 14.
상기 재로시간 예측부(18)는 슬라브(S0)가 장입될 때, 이미 생산된 슬라브별 평군 압연시간(Pi)을 기초로하여 다음의 수학식 1과 같이 예상재로시간(TS0)을 설정한다.When the slab (S0) is charged, the idle time prediction unit 18 sets the expected deadline time (T S0 ) as shown in Equation 1 based on the already-generated slab group rolling time (Pi). do.
여기서, P1은 도 3에서 가장 나중에 장입된 슬라브(S1)의 예상압연시간(압연피치)를 나타내고 P2는 S1 이전에 장입된 슬라브(S2)의 압연예상시간을 나타내며, P(N)은 장입된 슬라브중에서 추출대기상태에 있는 슬라브(Sn)의 압연예상시간을 나타낸다.Here, P1 represents the expected rolling time (rolling pitch) of the last loaded slab (S1) in Figure 3, P2 represents the expected rolling time of the slab (S2) loaded before S1, P (N) is The expected rolling time of the slab Sn in the extraction standby state of the slab is shown.
이 예상재로시간(TS0)과 목표재로시간(TST0)을 비교하여 예상재로시간(TS0)이 목표재로시간(TST0) 보다 더 클 경우 축소시키고 작을 경우 확대시키기 위해, 수정재로시간 계산부(16)가 수정재로시간(TSTTO)을 수학식 2와 같이 계산한다.For comparing the time (T S0) time (T ST0) as the target material in the expected material to when the expected re-time (T S0) is greater than the time (T ST0) as the target material collapse and expand is small, The correction rework time calculation unit 16 calculates the correction rework time T STTO as shown in Equation 2 below.
여기서, DTT는 목표재로시간 대비 예상재로시간의 차를 나타내며, b는 축소 혹은 확대계수를 나타낸다.Here, D TT represents the difference between the expected return time and the target return time, b represents a reduction or enlargement coefficient.
이어서, 상기 예상재로시간을 계산한 후 장입간격 결정부(14)가 수학식 3과 같이 장입간격(G0)을 계산한다.Subsequently, after calculating the expected reload time, the charging interval determination unit 14 calculates the charging interval G 0 as shown in Equation 3 below.
여기서, M0는 슬라브의 장입필요매수이고 L은 가열로의 유효로장의 길이이며, Wt는 슬라브 1매당 필요한 폭이다.Where M 0 is the required number of charges of the slab, L is the length of the effective furnace length of the furnace, and W t is the required width per slab.
상기와 같이 장입간격(G0)이 계산되면, 푸셔스트로크 계산부(12)에서 슬라브(S0)의 폭(W0)을 더하여 푸셔(3)의 스트로크가 결정되고, 결정된 스트로크에 따라 푸셔제어부(10)가 푸셔(3)를 작동하여 슬라브를 가열로내로 장입시킨다.When the charging interval G 0 is calculated as described above, the stroke of the pusher 3 is determined by adding the width W 0 of the slab S 0 in the pusher stroke calculating unit 12, and the pusher controller according to the determined stroke. (10) operates the pusher (3) to charge the slab into the furnace.
도 4(a)는 종래 워킹빔방식 연속가열로의 추출되는 슬라브대 재로시간의 관계를 나타내는 그래프이고, 도 4(b)는 본 발명에 따른 워킹빔방식 연속가열로에서의 추출되는 슬라브 매수대 재로시간의 관계를 나타내는 그래프이다. 도면에서, 약 210분 근방의 점선은 목표재로시간을 나타낸다. 도면에 도시된 바와 같이, 종래의 연속가열로에서는 추출되는 슬라브의 매수에 따라 목표재로시간에 대하여 그 편차가 심하게 나타나지만, 본 발명에 따른 연속가열로에서는 그 편차가 작게 나타남을 알 수 있다. 이것은, 종래에 비해 본 발명의 연속가열로의 실제 재로시간이 목표재로시간과 더 근사함을 나타낸다.Figure 4 (a) is a graph showing the relationship between the slab zones and the time of extraction of the conventional heating beam continuous heating furnace, Figure 4 (b) is a slab number of extraction from the working beam continuous heating furnace according to the present invention It is a graph showing the relationship between hours. In the figure, the dotted line around 210 minutes represents the target return time. As shown in the figure, in the conventional continuous heating furnace, the deviation appears to be severe with respect to the target furnace time depending on the number of slabs extracted, but it can be seen that the deviation is small in the continuous heating furnace according to the present invention. This indicates that the actual ashing time of the continuous heating furnace of the present invention is closer to the target ashing time than in the prior art.
본 발명은 상기한 바와 같이, 워킹빔방식 가열로에 장입되는 복수의 슬라브 사이의 간격을 다르게 하여 슬라브의 재로시간을 목표재로시간과 근사시킴으로써과다재로시간에 의한 스케일손실을 방지하고 과소재로시간에 의한 작업지연을 방지할 수 있게 된다.As described above, by varying the interval between the plurality of slabs charged to the working beam type heating furnace, the slab ash time is approximated with the target ash time to prevent scale loss due to excessive ash time and overmaterial It is possible to prevent the work delay caused by the furnace time.
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| KR100896577B1 (en) * | 2002-11-20 | 2009-05-07 | 주식회사 포스코 | An apparatus for automatically controlling inverse charging of slab into a heating furnace |
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| KR100742878B1 (en) * | 2001-11-28 | 2007-07-25 | 주식회사 포스코 | Method for controlling entrance interval and entrance velocity according to thickness of a plate in heat treatment furnace |
| KR100832975B1 (en) * | 2001-12-24 | 2008-05-27 | 주식회사 포스코 | System for optimizating target discharge temperature of reheating furnace |
| KR101382764B1 (en) * | 2012-12-24 | 2014-04-08 | 주식회사 포스코 | Apparatus and method of determining roll unit reorganization |
| KR101602874B1 (en) * | 2014-11-13 | 2016-03-11 | 주식회사 포스코 | Apparatus and method for heating rolling material |
| KR101908776B1 (en) * | 2016-05-31 | 2018-10-16 | 주식회사 포스코 | Mill pacing control method for reheating furnace |
| KR20200118531A (en) | 2019-04-08 | 2020-10-16 | 재단법인 포항산업과학연구원 | Apparatus and method of predicting enegry amount pattern inputting to heatng furnace, and computer readable medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5591927A (en) * | 1978-12-28 | 1980-07-11 | Ishikawajima Harima Heavy Ind Co Ltd | Automatic charging method for material to be heated into walking beam type heating furnace |
| JPS59197516A (en) * | 1983-04-23 | 1984-11-09 | Nippon Steel Corp | Transfer of bloom or slab in walking beam reheating furnace |
| JPH02258914A (en) * | 1989-03-29 | 1990-10-19 | Sumitomo Metal Ind Ltd | Method for operating continuous heating furnace |
| JPH05222443A (en) * | 1992-02-07 | 1993-08-31 | Kawasaki Steel Corp | Device for charging slab into heating furnace |
-
1999
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5591927A (en) * | 1978-12-28 | 1980-07-11 | Ishikawajima Harima Heavy Ind Co Ltd | Automatic charging method for material to be heated into walking beam type heating furnace |
| JPS59197516A (en) * | 1983-04-23 | 1984-11-09 | Nippon Steel Corp | Transfer of bloom or slab in walking beam reheating furnace |
| JPH02258914A (en) * | 1989-03-29 | 1990-10-19 | Sumitomo Metal Ind Ltd | Method for operating continuous heating furnace |
| JPH05222443A (en) * | 1992-02-07 | 1993-08-31 | Kawasaki Steel Corp | Device for charging slab into heating furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100896577B1 (en) * | 2002-11-20 | 2009-05-07 | 주식회사 포스코 | An apparatus for automatically controlling inverse charging of slab into a heating furnace |
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