JPH0350612B2 - - Google Patents
Info
- Publication number
- JPH0350612B2 JPH0350612B2 JP59018425A JP1842584A JPH0350612B2 JP H0350612 B2 JPH0350612 B2 JP H0350612B2 JP 59018425 A JP59018425 A JP 59018425A JP 1842584 A JP1842584 A JP 1842584A JP H0350612 B2 JPH0350612 B2 JP H0350612B2
- Authority
- JP
- Japan
- Prior art keywords
- fixed weir
- drum
- molten metal
- weir
- casting
- 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 238000009749 continuous casting Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 description 23
- 239000000463 material Substances 0.000 description 14
- 230000009970 fire resistant effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
〔本発明の技術分野〕
本発明は、薄板連続鋳造装置に関し、特にツイ
ンドラム方式の薄板連続鋳造装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a continuous thin plate casting apparatus, and particularly to a twin drum continuous thin plate casting apparatus.
水平に並列した２本の内部水冷式ドラムとドラ
ム端面に押し当てた２つの固定せきで形成される
空間に溶湯を注湯し上記ドラムを回転して薄板を
連続鋳造する従来のツインドラム方式連続鋳造機
では次のような欠点を有する。
Conventional continuous twin-drum method in which molten metal is poured into a space formed by two internal water-cooled drums arranged horizontally in parallel and two fixed weirs pressed against the drum end faces, and the drums are rotated to continuously cast thin plates. Casting machines have the following drawbacks.
(1) 固定せき壁面上で溶湯が凝固し、この凝固物
がドラムの中立点近傍で圧延され幅広がりを生
じ固定せきを押しひろげることにより、ドラム
端面と固定せき間にクリアランスが生じる。こ
のクリアランスに溶湯が差しこみ安定した鋳造
が不能となる。(1) The molten metal solidifies on the wall surface of the fixed weir, and this solidified material is rolled near the neutral point of the drum, expanding its width and pushing the fixed weir apart, creating a clearance between the end surface of the drum and the fixed weir. Molten metal enters this clearance, making stable casting impossible.
(2) 固定せき壁面で凝固物が固着して成長する
と、鋳片端部の性状を著しく害するだけでな
く、ドラム面上で生成した凝固シエルを破断し
ブレークアウトを引き起こす。(2) If solidified matter adheres and grows on the fixed weir wall surface, it not only significantly impairs the properties of the end of the slab, but also ruptures the solidified shell formed on the drum surface, causing breakout.
本発明は、上記欠点を解消する薄板連続鋳造装
置を提供することを目的とする。すなわち、本発
明の目的は、固定せき壁面で生成する凝固物をで
きるだけ剥離させ、また、固定せき壁面で生成し
た凝固物が圧延され幅広がりを生じても湯差しを
生じない薄板連続鋳造装置を提供するにあり、さ
らに、鋳片性状を害することなく、安定して連続
的に鋳造することができる薄板連続鋳造装置を提
供するにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous thin plate casting apparatus that eliminates the above-mentioned drawbacks. In other words, an object of the present invention is to provide a thin plate continuous casting apparatus in which the solidified material formed on the fixed weir wall surface is peeled off as much as possible, and in which the solidified material formed on the fixed weir wall surface is rolled and does not cause melting even if the width is expanded. Another object of the present invention is to provide a continuous thin plate casting apparatus that can stably and continuously cast a slab without impairing the properties of the slab.
本発明は、製造する金属帯板厚さに相当する間
〓を置いて水平に並設し、互いに回転方向を異に
する２本の水冷ドラムと、このドラムの端面に該
ドラム軸心を通る水平線近傍から上部に該端面に
向けて押し当てられた固定せきとによつて空間を
形成し、該空間に溶湯を注ぎ、下方より薄板を得
る連続鋳造装置において、上記固定せきを主とし
て溶湯と接触する上部側固定せきと主として鋳片
と接触する下部側固定せきとに分割し、上部側固
定せきを上記ドラムの半径方向に水平に一定周期
で振動させる装置と、下部側固定せきに加わる押
力に応じて上記ドラムの軸方向に下部側固定せき
を前後退させる装置とを備えたことを特徴とする
薄板連続鋳造装置である。
The present invention consists of two water-cooled drums that are arranged horizontally in parallel with a distance corresponding to the thickness of the metal strip to be manufactured, and that rotate in different directions. In a continuous casting apparatus in which a space is formed by a fixed weir pressed upward from near the horizontal line toward the end face, and molten metal is poured into the space to obtain a thin plate from below, the fixed weir is mainly in contact with the molten metal. A device that vibrates the upper fixed weir horizontally in the radial direction of the drum at a constant frequency, and a pushing force that is applied to the lower fixed weir. The thin plate continuous casting apparatus is characterized in that it is equipped with a device for moving the lower fixed weir forward and backward in the axial direction of the drum in accordance with the above.
即ち、本発明では、ドラム端面に押し当てる固
定せきを主として溶湯と接触する上部側固定せき
と主として鋳片と接触する下部側固定せきとに分
割する。そして、上部側固定せきを上記ドラムの
半径方向に水平に一定周期で振動させることによ
り、上部側固定せき面とドラム端面との間に生成
する凝固物を剥離するとともに、一定面圧でドラ
ム端面に押し当てられた上部側固定せきにより、
溶湯の漏れ、差し込みを防止する。また、下部側
固定せきに加わる押力に応じて上記ドラムの軸方
向に下部側固定せきを前後退させることにより、
固定せき面上の凝固物並びにドラム面上の凝固シ
エルの幅広がりに対応できるようにし、上記の押
力が作用しなくなれば直ちにドラム端面に復帰し
て溶湯をシールするように構成されている。 That is, in the present invention, the fixed weir that presses against the end surface of the drum is divided into an upper fixed weir that mainly contacts the molten metal and a lower fixed weir that mainly contacts the slab. By vibrating the upper fixed weir horizontally at a constant frequency in the radial direction of the drum, the solidified material generated between the upper fixed weir surface and the drum end surface is peeled off, and the drum end surface is vibrated with a constant surface pressure. The upper fixed weir pressed against the
Prevents leakage and insertion of molten metal. In addition, by moving the lower fixed weir forward and backward in the axial direction of the drum in accordance with the pushing force applied to the lower fixed weir,
It is configured to accommodate the widening of the solidified material on the fixed weir surface and the solidified shell on the drum surface, and is configured to immediately return to the end surface of the drum to seal the molten metal when the above-mentioned pushing force ceases to act.
また、本発明に於いて、上部側固定せきとして
は、1700℃以上の溶融点をもつ耐火性材料からな
るものが好ましく、また、この上部側固定せき
は、初期に500℃以上に予熱できるように構成さ
れているのが好ましく、さらに、鋳造操業中でも
加熱できるように構成されているのが好ましい。 In addition, in the present invention, the upper fixed weir is preferably made of a fire-resistant material with a melting point of 1700°C or higher, and the upper fixed weir is preferably made of a fire-resistant material that has a melting point of 1700°C or higher. It is preferable to have a structure in which it is possible to heat the casting even during casting operation.
以下本発明を第１〜３図に基づいて詳細に説明
する。第１図は本発明の実施例である薄板連続鋳
造装置の縦断面図であり、第２図は第１図Ａ−
A′線断面図であり、第３図は第１図Ｂ−B′線断
面図である。第１図に示す装置は薄板鋳片３を鋳
造する水冷鋳造ドラム１，１′、水冷鋳造ドラム
１，１′の間の溶湯４の洩れを防止する固定せき
２，２′、溶鋼等の溶湯４を定量供給するタンデ
イツシユ５などを主要構成部材としている。 The present invention will be explained in detail below based on FIGS. 1 to 3. FIG. 1 is a longitudinal cross-sectional view of a thin plate continuous casting apparatus that is an embodiment of the present invention, and FIG.
It is a sectional view taken along line A', and FIG. 3 is a sectional view taken along line BB' in FIG. The apparatus shown in FIG. 1 includes water-cooled casting drums 1 and 1' for casting thin plate slabs 3, fixed weirs 2 and 2' for preventing leakage of molten metal 4 between the water-cooled casting drums 1 and 1', and molten metal such as molten steel. The main components include a tundish 5 for supplying a fixed amount of 4.
この装置を説明すると、第１図に示すとおり、
水冷鋳造ドラム１，１′は水平に設置されており、
図示しない駆動装置により回転（矢示方向）駆動
される。この水冷鋳造ドラム１，１′は例えば銅
または銅合金あるいは鋼材により形成され、内部
に水冷機構を内蔵するものであり溶湯４との接触
面積を大きく得るため相当大径のドラムとなつて
いる。また水冷鋳造ドラム１，１′の両端部には
サイドをシールするための耐火性材料からなる固
定せき２，２′が上記ドラム１，１′の両端面に押
し当てられており、２本の水冷鋳造ドラム１，
１′と２個の固定せき２，２′で形成される空間に
溶湯４が注湯される。 To explain this device, as shown in Figure 1,
The water-cooled casting drums 1, 1' are installed horizontally,
It is rotated (in the direction of the arrow) by a drive device (not shown). The water-cooled casting drums 1, 1' are made of copper, copper alloy, or steel, for example, and have a built-in water-cooling mechanism, and have a considerably large diameter in order to have a large contact area with the molten metal 4. Furthermore, fixed weirs 2, 2' made of a fire-resistant material are pressed against both end surfaces of the water-cooled casting drums 1, 1' to seal the sides. water-cooled casting drum 1,
Molten metal 4 is poured into the space formed by 1' and the two fixed weirs 2, 2'.
次に第２図及び第３図に基づいて本発明の固定
せきの構造を説明する。第２図及び第３図は本発
明の実施例を示す図であつて、固定せきを３分割
した例である。第２〜３図において、上部側固定
せき８は1700℃の溶融点を有する耐火性材料から
なり、裏面よりヒーター９により初期500℃以上
に予熱され、鋳造中も加熱できるものであり油圧
シリンダー（又はエアシリンダー）１３で左右方
向に動く機構を有するものである。また、この加
熱箱全体を油圧シリンダー（又はエアシリンダ
ー）１０により一定面圧でドラム端面に押し当て
られる。一方下部側固定せき１１は耐火性材料か
らなり、裏面より押力制御が可能な油圧シリンダ
ー１２によりドラム端面に押し当てられる。 Next, the structure of the fixed weir of the present invention will be explained based on FIGS. 2 and 3. FIGS. 2 and 3 are diagrams showing an embodiment of the present invention, and are examples in which a fixed weir is divided into three parts. In Figures 2 and 3, the upper fixed weir 8 is made of a fire-resistant material with a melting point of 1700°C, is preheated from the back side to an initial temperature of 500°C or higher by a heater 9, and can be heated even during casting. It has a mechanism that moves in the left and right direction using an air cylinder (or air cylinder) 13. Further, the entire heating box is pressed against the end surface of the drum by a hydraulic cylinder (or air cylinder) 10 with a constant surface pressure. On the other hand, the lower fixed weir 11 is made of a fire-resistant material and is pressed against the end surface of the drum by a hydraulic cylinder 12 whose pressing force can be controlled from the back side.
一方、第１図に示すように、注湯された溶湯４
は水冷鋳造ドラム１，１′の表面に接触して冷却
され、できた凝固シエルは一体化され鋳片３とな
る。この鋳片３はピンチロール６により引抜かれ
る。なお第１図中７はガイドロールである。 On the other hand, as shown in Fig. 1, the poured molten metal 4
is cooled by contacting the surfaces of the water-cooled casting drums 1 and 1', and the solidified shell thus formed is integrated into a slab 3. This slab 3 is pulled out by pinch rolls 6. Note that 7 in FIG. 1 is a guide roll.
上記した上部側固定せき８の作用を説明する
と、上部側固定せき８は、一定面圧でドラム１端
面に押し当て、左右方向に動くことにより、ドラ
ム１端面と固定せき壁面とに生成する凝固物を剥
離し、凝固物はドラム面上の凝固シエルと共に下
方に持ち去られる。なお上部側固定せきの左右方
向の動きは、数多くの実験結果より次の範囲が適
当であることを見い出した。 To explain the action of the above-described upper fixed weir 8, the upper fixed weir 8 presses against the end face of the drum 1 with a constant surface pressure and moves in the left and right direction, thereby causing solidification to occur on the end face of the drum 1 and the fixed weir wall surface. The material is peeled off and the coagulum is carried away downwardly along with the coagulum shell on the drum surface. Based on the results of numerous experiments, it has been found that the following range is appropriate for the movement of the upper fixed weir in the left-right direction.
１サイクル：0.2〜5.0秒
片側移動量：５mm〜20mm
一方、下部側固定せき１１は、固定せき壁面の
凝固物ならびにドラム面上の凝固シエルの圧延に
よる幅広がりに対応できるよう、押力が作用すれ
ば直ちにドラム１端面からにげられ、また押力が
作用しなくなれば直ちにドラム１端面に復帰して
溶湯４をシールするように構成されている。1 cycle: 0.2 to 5.0 seconds One side movement amount: 5 mm to 20 mm On the other hand, a pushing force is applied to the lower fixed weir 11 so that it can cope with the width expansion due to the rolling of the solidified material on the fixed weir wall surface and the solidified shell on the drum surface. When this happens, it immediately escapes from the end surface of the drum 1, and when the pressing force ceases to act, it immediately returns to the end surface of the drum 1 to seal the molten metal 4.
以下本発明を詳細に説明したが、さらに、本発
明の具体例をあげ、本発明をより詳細に説明す
る。 The present invention has been described in detail below, and furthermore, specific examples of the present invention will be given to explain the present invention in more detail.
鋼を鋳造した場合の構成部材の寸法ならびに諸
条件等は次のとおりである。
The dimensions and various conditions of the structural members when steel is cast are as follows.
(1) 水冷鋳造ドラム
鋼製で内部水冷方式であり、ドラム径600mm
φ、ドラム幅600mmの水冷鋳造ドラムを使用す
る。鋳片寸法は２〜５mmｔであり、このときド
ラム回転速度（鋳造速度）は２〜15ｍ／minで
ある。(1) Water-cooled casting drum Made of steel and internally water-cooled, drum diameter 600mm.
A water-cooled casting drum with a drum width of 600 mm is used. The slab size is 2 to 5 mmt, and the drum rotation speed (casting speed) is 2 to 15 m/min.
(2) 固定せき
上部側固定せきと下部側固定せきの分割位置
はドラム中立点より上30mmとした。(2) Fixed weir The dividing position of the upper fixed weir and the lower fixed weir was 30 mm above the neutral point of the drum.
上部側固定せきと下部側固定せきの材料とし
てボロンナイトライド（BN）、アルミナ−グ
ラフアイト、窒化珪素（Si3N4）等を用いた。
また上部側固定せきは約1300℃に予熱し鋳造中
も加熱した。また上部固定せきをドラム端面に
２〜10Kg／cm2で押し付け、１サイクル／秒で左
右に10mmづつ動きを与えた。さらに下部側固定
せきは２分割にしそれぞれ約0.5〜1.0Kg／cm2の
押力が作用した場合に逃げられるよう圧力制御
した。 Boron nitride (BN), alumina-graphite, silicon nitride (Si 3 N 4 ), etc. were used as materials for the upper fixed weir and the lower fixed weir.
The upper fixed weir was preheated to approximately 1300°C and heated during casting. In addition, the upper fixed weir was pressed against the end face of the drum at 2 to 10 kg/cm 2 and moved 10 mm left and right at 1 cycle/second. Furthermore, the lower fixed weir was divided into two parts, and the pressure was controlled so that it could escape when a pushing force of about 0.5 to 1.0 kg/cm 2 was applied to each part.
以上の諸条件で鋳造したところ、ブレークアウ
ト等の操業トラブルもなく、良好な鋳片を安定し
て得ることができた。 When casting was performed under the above conditions, good slabs could be stably obtained without any operational troubles such as breakouts.
本発明は、以上詳記したように、固定せきを上
部側固定せきと下部側固定せきとに分割し、上部
側固定せきを左右方向に揺動可能に配設したもの
であるから、固定せき壁面とドラム端面に生成す
る凝固物が成長することがなく、このため、ドラ
ム面上で生成した凝固シエルを破断することがな
く鋳片端部の性状が良好な鋳片を安定して連続的
に鋳造できる効果が生ずるものである。
As described in detail above, the present invention divides the fixed weir into an upper fixed weir and a lower fixed weir, and the upper fixed weir is arranged to be swingable in the left and right direction. The solidified material that forms on the wall surface and drum end surface does not grow, and therefore the solidified shell formed on the drum surface does not break and the slab with good properties at the end of the slab can be produced stably and continuously. This produces the effect that it can be cast.
第１図は本発明の実施例である薄板連続鋳造装
置の縦断面図であり、第２図は第１図Ａ−A′線
断面図であり、第３図は第１図Ｂ−B′線断面図
である。
１，１′……水冷鋳造ドラム、２，２′……固定
せき、３……鋳片、４……溶湯、５……タンデイ
ツシユ、６……ピンチロール、７……ガイドロー
ル、８……上部側固定せき、９……ヒーター、１
０……油圧シリンダー、１１……下部側固定せ
き、１２……油圧シリンダー、１３……油圧シリ
ンダー。
FIG. 1 is a longitudinal cross-sectional view of a thin plate continuous casting apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A' in FIG. 1, and FIG. 3 is a cross-sectional view taken along line A-A' in FIG. FIG. 1, 1'... Water-cooled casting drum, 2, 2'... Fixed weir, 3... Slab, 4... Molten metal, 5... Tandate, 6... Pinch roll, 7... Guide roll, 8... Upper fixed weir, 9...Heater, 1
0...Hydraulic cylinder, 11...Lower side fixed weir, 12...Hydraulic cylinder, 13...Hydraulic cylinder.
Claims (1)
て水平に並設し、互いに回転方向を異にする２本
の水冷ドラムと、このドラムの端面に該ドラム軸
心を通る水平線近傍から上部に該端面に向けて一
定圧力で押し当てられた固定せきとによつて空間
を形成し、該空間に溶湯を注ぎ、下方より薄板を
得る連続鋳造装置において、上記固定せきを主と
して溶湯と接触する上部側固定せきと主として鋳
片と接触する下部側固定せきとに分割し、上部側
固定せきを上記ドラムの半径方向に水平に一定周
期で振動させる装置と、下部側固定せきに加わる
押力に応じて上記ドラムの軸方向に下部側固定せ
きを前後退する装置とを備えたことを特徴とする
薄板連続鋳造装置。1. Two water-cooled drums arranged horizontally with a distance corresponding to the thickness of the metal strip to be manufactured, and rotating in different directions from each other. In a continuous casting device, a space is formed by a fixed weir pressed against the end face at a constant pressure in the upper part, and molten metal is poured into the space to obtain a thin plate from below.The fixed weir is mainly in contact with the molten metal. A device that vibrates the upper fixed weir horizontally in the radial direction of the drum at a constant frequency, and a pushing force that is applied to the lower fixed weir. and a device for moving the lower fixed weir forward and backward in the axial direction of the drum in accordance with the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1842584A JPS60166146A (en) | 1984-02-06 | 1984-02-06 | Continuous casting device for thin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1842584A JPS60166146A (en) | 1984-02-06 | 1984-02-06 | Continuous casting device for thin plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60166146A JPS60166146A (en) | 1985-08-29 |
| JPH0350612B2 true JPH0350612B2 (en) | 1991-08-02 |
Family
ID=11971292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1842584A Granted JPS60166146A (en) | 1984-02-06 | 1984-02-06 | Continuous casting device for thin plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60166146A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61144245A (en) * | 1984-12-17 | 1986-07-01 | Hitachi Ltd | Twin drum type continuous casting machine |
| JPS63115653A (en) * | 1986-10-31 | 1988-05-20 | Hitachi Zosen Corp | Cast slab guiding device for continuous casting equipment |
| JP2649066B2 (en) * | 1988-08-03 | 1997-09-03 | 新日本製鐵株式会社 | Twin roll thin plate continuous casting method |
| GB8910906D0 (en) * | 1989-05-12 | 1989-06-28 | Davy Distington Ltd | Rotary strip caster edge containment |
| FR2648063B1 (en) * | 1989-06-12 | 1994-03-18 | Irsid | METHOD AND DEVICE FOR VIBRATION OF A CONTINUOUS CASTING LINGOTIERE OF METALS |
| FR2652022B1 (en) * | 1989-06-26 | 1994-04-08 | Irsid | CASSETTE FOR FORMING A FRONTAL CLOSING FACE OF A CONTINUOUS CASTING DEVICE OF LIQUID METAL. |
| US5390726A (en) * | 1991-03-15 | 1995-02-21 | Nippon Steel Corporation | Process for producing thin metallic strip by continuous casting |
| GB9500156D0 (en) * | 1995-01-05 | 1995-03-01 | Davy Mckee Sheffield | Twin roll casting |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2058447A (en) * | 1932-05-16 | 1936-10-27 | Clarence W Hazelett | Metalworking process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157247U (en) * | 1982-04-15 | 1983-10-20 | 日立造船株式会社 | Mold in continuous casting equipment |
-
1984
- 1984-02-06 JP JP1842584A patent/JPS60166146A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2058447A (en) * | 1932-05-16 | 1936-10-27 | Clarence W Hazelett | Metalworking process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60166146A (en) | 1985-08-29 |
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