JPS6137025B2 - - Google Patents
Info
- Publication number
- JPS6137025B2 JPS6137025B2 JP55086634A JP8663480A JPS6137025B2 JP S6137025 B2 JPS6137025 B2 JP S6137025B2 JP 55086634 A JP55086634 A JP 55086634A JP 8663480 A JP8663480 A JP 8663480A JP S6137025 B2 JPS6137025 B2 JP S6137025B2
- Authority
- JP
- Japan
- Prior art keywords
- rotating drum
- thin plate
- molten metal
- drum
- cylindrical ring
- 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
Links
- 238000004519 manufacturing process Methods 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0648—Casting surfaces
- B22D11/0654—Casting belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】
本発明は、溶湯から直接薄板を製造する装置に
関し、特に改良された回転ドラムを備えた薄板製
造装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing sheet metal directly from molten metal, and more particularly to an apparatus for manufacturing sheet metal with an improved rotating drum.
溶湯から直接薄板を製造する装置としては、ノ
ズルより溶湯を円筒リング表面上へ注出し、回転
ドラムで溶湯を急速に冷却、凝固して薄板を製造
する装置が知られている。 As an apparatus for directly manufacturing a thin plate from molten metal, there is a known apparatus that pours the molten metal from a nozzle onto the surface of a cylindrical ring, and rapidly cools and solidifies the molten metal using a rotating drum to manufacture a thin plate.
第１図は、薄板製造装置の全体構成を示す図
で、符号１０は、内部冷却される回転ドラムであ
り、モータ１１により駆動される。回転ドラムの
周速は、図示しない速度制御装置により所定の一
定速度に制御されるようになつている。 FIG. 1 is a diagram showing the overall configuration of a thin plate manufacturing apparatus. Reference numeral 10 denotes an internally cooled rotating drum, which is driven by a motor 11. As shown in FIG. The circumferential speed of the rotating drum is controlled to a predetermined constant speed by a speed control device (not shown).
回転ドラムの下方には、溶湯１２を保持する炉
１３が配置されている。炉の上部はカバー１４に
よつて封じられており、このカバー１４の中央部
には、下端が溶湯に浸漬する浸漬ノズル１５とこ
の浸漬ノズル内の溶湯を回転ドラム表面上へ導く
先端ノズル１６が取付けられている。 A furnace 13 holding molten metal 12 is arranged below the rotating drum. The upper part of the furnace is sealed by a cover 14, and in the center of this cover 14 are a submerged nozzle 15 whose lower end is immersed in the molten metal, and a tip nozzle 16 that guides the molten metal in the immersed nozzle onto the surface of the rotating drum. installed.
炉１３の溶湯１２の上部は、気圧室１７となつ
ており、この気圧室内の圧力は、気圧室に連通し
たエアシリンダ１８により制御できるようになつ
ている。 The upper part of the molten metal 12 in the furnace 13 is a pressure chamber 17, and the pressure within this pressure chamber can be controlled by an air cylinder 18 communicating with the pressure chamber.
気圧室１７内の圧力を上昇させることにより溶
湯を回転ドラム上へ注出できる。このようにして
注出された溶湯は、回転ドラム上で冷却、凝固さ
れ薄板１９となる。 By increasing the pressure within the atmospheric pressure chamber 17, the molten metal can be poured onto the rotating drum. The molten metal thus poured out is cooled and solidified on the rotating drum to form the thin plate 19.
製造される薄板は、モータ２０により回転駆動
される巻取ドラム２１に巻取られる。巻取ドラム
２１は、回転ドラムに対し進退可能となるようア
ーム２２に支持されているので巻取量に応じて後
退できる。 The manufactured thin plate is wound onto a winding drum 21 which is rotationally driven by a motor 20. The winding drum 21 is supported by an arm 22 so as to be movable forward and backward with respect to the rotating drum, so that it can move backward depending on the amount of winding.
第５図、第６図は、従来の回転ドラムの例で、
第５図は、断面図、第６図は第５図を―線よ
り見た図である。同図より明らかなようにドラム
１０はフランジ３７，３８にボルト３０，３１で
組立てられて形成されるものであり、ドラムとフ
ランジとは異種材料で作られるため第６図に示す
ようにボルト３０を通る半径方向の熱膨張δ１
は、ボルト間の中心を通る半径方向の熱膨張δ２
より小さくなる。このためドラム一回転につき、
ボルト３０の数に相当する数の凹凸が薄板に形成
されるため、薄板の表面状態は極めて劣化するこ
とになる。又、ドラム１０内は冷却水により冷却
されるようになつているけれども、ドラム本体全
体が熱膨張するため熱膨張量の絶対値が大きくな
る。 Figures 5 and 6 show examples of conventional rotating drums.
FIG. 5 is a cross-sectional view, and FIG. 6 is a view of FIG. 5 taken along the - line. As is clear from the figure, the drum 10 is formed by assembling flanges 37 and 38 with bolts 30 and 31. Since the drum and the flange are made of different materials, the bolts 30 and 31 are assembled as shown in FIG. radial thermal expansion through δ 1
is the radial thermal expansion through the center between the bolts δ 2
become smaller. Therefore, per rotation of the drum,
Since the number of irregularities corresponding to the number of bolts 30 is formed on the thin plate, the surface condition of the thin plate is extremely deteriorated. Further, although the inside of the drum 10 is designed to be cooled by cooling water, the absolute value of the amount of thermal expansion becomes large because the entire drum body thermally expands.
すなわち、このような装置にあつては、回転ド
ラムは内側から冷却されるが、約1400℃と高温の
溶湯に接触するため回転ドラム１０の熱膨張を防
止することはできない。熱膨張が発生するとノズ
ル１６と回転ドラム１０間の間隔が変化するため
均一な厚みの薄板を得ることができないという問
題がある。従つて、回転ドラムの熱膨張量をでき
るだけ小さくすることが薄板製造装置における重
要な課題の一つである。 That is, in such an apparatus, although the rotating drum is cooled from the inside, thermal expansion of the rotating drum 10 cannot be prevented because it comes into contact with molten metal at a high temperature of approximately 1400°C. When thermal expansion occurs, the distance between the nozzle 16 and the rotating drum 10 changes, so there is a problem that a thin plate of uniform thickness cannot be obtained. Therefore, one of the important issues in thin plate manufacturing equipment is to reduce the amount of thermal expansion of the rotating drum as much as possible.
更に、従来の回転ドラムは叙上の如く複数の部
品がボルト締め等により構成されており、この場
合ボルトの存在する近傍では強固に拘束されるた
め回転ドラム半径方向の熱膨張量が全周に亘つて
一様とならないため、回転ドラムの外周面が完全
な円周面とならず短いピツチの凹凸が発生する。
したがつて従来の薄板製造装置では回転ドラムの
外周面が完全な円周面とならないために製造され
た薄板に厚みむらが生じ品質低下は免かれず、一
方熱膨張量を小さくしようとする装置が大型化
し、かつ製造速度を低目に制限せざるを得ず、生
産性の低下をきたしていた。 Furthermore, as mentioned above, conventional rotating drums are composed of multiple parts tightened with bolts, etc. In this case, the area near the bolts is tightly restrained, so the amount of thermal expansion in the radial direction of the rotating drum is limited to the entire circumference. Since the circumferential surface is not uniform throughout, the outer circumferential surface of the rotating drum is not a perfect circumferential surface, and irregularities with short pitches occur.
Therefore, in conventional thin plate manufacturing equipment, the outer peripheral surface of the rotating drum does not form a perfect circumferential surface, resulting in uneven thickness of the manufactured thin plate and deterioration in quality.On the other hand, equipment that attempts to reduce the amount of thermal expansion However, the manufacturing speed had to be limited to a low level, resulting in a decrease in productivity.
本発明の目的は、簡単な構造で回転ドラムに生
じる半径方向の熱膨張量を全周に亘つて一様で且
つ大幅に低減することが出来、もつて製造される
薄板の板厚のむらの少ない品質に優れた薄板の製
造が可能な薄板製造装置を提供することにある。 An object of the present invention is to be able to uniformly and significantly reduce the amount of radial thermal expansion that occurs in a rotating drum with a simple structure, and to reduce unevenness in the thickness of manufactured thin plates. An object of the present invention is to provide a thin plate manufacturing device capable of manufacturing thin plates of excellent quality.
本発明の特徴とするところは、溶湯を回転ドラ
ム上へ注出し、この回転ドラムで溶湯を冷却、凝
固して薄板を製造する装置において、前記回転ド
ラムは回転ドラム本体と、この回転ドラム本体の
外周に焼嵌めされ、その外面に溶湯が注出される
円筒リングとから構成し、円筒リング内周に円周
方向に延びた冷却溝を回転ドラムの軸方向に等間
隔に複数本形成し、前記円筒リングは、前記回転
ドラム本体より熱伝導度の高い材料から形成した
ことを特徴とする薄板製造装置にある。 A feature of the present invention is that in an apparatus for producing a thin plate by pouring molten metal onto a rotating drum, cooling and solidifying the molten metal on this rotating drum, the rotating drum has a rotating drum main body and a rotating drum main body. It consists of a cylindrical ring that is shrink-fitted on the outer periphery and from which the molten metal is poured out, and a plurality of cooling grooves extending in the circumferential direction are formed on the inner periphery of the cylindrical ring at equal intervals in the axial direction of the rotating drum. The thin plate manufacturing apparatus is characterized in that the cylindrical ring is made of a material having higher thermal conductivity than the rotating drum body.
以下本発明の一実施例を従来の装置と比較しな
がら図面を用いて説明する。 An embodiment of the present invention will be described below with reference to the drawings while comparing it with a conventional device.
次に、本発明の薄板製造装置に適用される回転
ドラムの詳細を第２図、第３図を用いて説明す
る。第２図は回転ドラムの断面図、第３図は第２
図の―線断面図である。 Next, details of the rotating drum applied to the thin plate manufacturing apparatus of the present invention will be explained using FIGS. 2 and 3. Figure 2 is a sectional view of the rotating drum, and Figure 3 is a cross-sectional view of the rotating drum.
FIG.
モータ１１の軸３０には、半径方向の熱膨張量
が全周に亘つて一様となるよう一体加工されたド
ラム本体３１が取付けられている。このドラム本
体３１の外周には、内周面に複数個の冷却溝３２
ａがドラムの軸方向に等間隔に複数本加工された
薄肉円筒リング３２が焼嵌めされている。焼嵌温
度としては、製造中のドラム本体の温度（例えば
100〜300℃）以上に設定すれば良い。 A drum body 31 is attached to the shaft 30 of the motor 11, which is integrally processed so that the amount of thermal expansion in the radial direction is uniform over the entire circumference. A plurality of cooling grooves 32 are provided on the inner peripheral surface of the outer periphery of the drum body 31.
A plurality of thin cylindrical rings 32 are machined at equal intervals in the axial direction of the drum and are shrink-fitted therein. The shrink-fitting temperature is determined by the temperature of the drum body during manufacture (e.g.
100~300℃) or higher.
ドラム本体には、軸３０内を通して冷却溝３２
ａへ冷却液を循環させる冷却液通路３３が形成さ
れている。 A cooling groove 32 is provided in the drum body through the shaft 30.
A coolant passage 33 is formed to circulate the coolant to a.
薄肉円筒リングの材質としては、熱伝導度の高
い銅が適している。溶湯から薄肉円筒リングへ伝
達された熱は、冷却液により強制的に回転ドラム
外へ除去できるのでドラム本体の材質としては、
安価な鉄材あるいはアルミニウム材で十分であ
る。 Copper, which has high thermal conductivity, is suitable as the material for the thin cylindrical ring. The heat transferred from the molten metal to the thin cylindrical ring can be forcibly removed to the outside of the rotating drum by the cooling liquid, so the material of the drum body is
An inexpensive iron or aluminum material is sufficient.
尚、第２図中、薄肉円筒リング押え３４をボル
トによりドラム本体に取付けてあるが、特に必要
ではなく、この押えを設ける場合であつても小さ
な力で簡単に固定する程度のものであるからドラ
ム本体の半径方向熱膨張量の円周方向における一
様さを損うものではない。 In Fig. 2, a thin cylindrical ring presser 34 is attached to the drum body with bolts, but it is not particularly necessary, and even if this presser is provided, it can be easily fixed with a small force. This does not impair the uniformity of the amount of radial thermal expansion of the drum body in the circumferential direction.
第４図は、本実施例の実験結果、すなわち製造
経過時間ｔと熱膨張量δとの関係を示す図で、曲
線Ａのように時間経過と共になめらかに膨張し、
しかも定常状態での熱膨張量δ３は、0.1mm以下
と小さい。又、同図から明らかなように、回転ド
ラムは一様に膨張するように形成されているので
１回転中における厚みむらは現われていない。尚
曲線Ａの実験条件は、回転ドラム本体が鉄、円筒
リングに銅を使用し、回転ドラム外径500mm、ド
ラム幅100mm、溶湯温度1500℃、製造速度30ｍ／
sec、製造される薄板の厚み40μ、幅60mmであ
る。 FIG. 4 is a diagram showing the experimental results of this example, that is, the relationship between the elapsed manufacturing time t and the amount of thermal expansion δ.
Furthermore, the amount of thermal expansion δ3 in a steady state is as small as 0.1 mm or less. Further, as is clear from the figure, since the rotating drum is formed to expand uniformly, there is no thickness unevenness during one rotation. The experimental conditions for curve A were as follows: the rotating drum body was made of iron, the cylindrical ring was made of copper, the outer diameter of the rotating drum was 500 mm, the drum width was 100 mm, the molten metal temperature was 1500°C, and the production speed was 30 m/min.
sec, the thickness of the manufactured thin plate is 40μ and the width is 60mm.
回転ドラムを回転ドラム本体と、このドラム本
体の外周に焼嵌めされた円筒リングとから構成し
たので、回転ドラムの半径方向の熱膨張を拘束す
る連結手段が不要となり、よつて回転ドラム外周
は全周に亘つて一様に熱膨張させることが可能と
なる。 Since the rotating drum is composed of a rotating drum body and a cylindrical ring that is shrink-fitted to the outer periphery of the drum body, there is no need for a connecting means to restrict thermal expansion in the radial direction of the rotating drum, and the entire outer periphery of the rotating drum is It becomes possible to thermally expand uniformly over the circumference.
しかも前記回転ドラム内面に冷却溝を形成した
ことから、溶湯からの熱伝導は実質的に内筒リン
グとドラム本体との間で切離され該ドラム本体へ
の熱伝達を極めて少なく抑制することができる。
更に、冷却溝３２ａは軸方向に等間隔に複数本設
けられているため冷却液との接触面積が大きくと
れ、冷却効果が大きい。従つて回転ドラムの熱膨
張量は、薄肉円筒リングの線膨張係数、温度及び
厚みの積に比例すると考えてよいのでリングの厚
みを小さくする程熱膨張量を小さくできる。 Moreover, since cooling grooves are formed on the inner surface of the rotating drum, heat conduction from the molten metal is substantially separated between the inner cylinder ring and the drum body, and heat transfer to the drum body can be suppressed to an extremely low level. can.
Furthermore, since a plurality of cooling grooves 32a are provided at equal intervals in the axial direction, a large contact area with the cooling liquid can be obtained, and a cooling effect is large. Therefore, the amount of thermal expansion of the rotating drum can be considered to be proportional to the product of the linear expansion coefficient, temperature, and thickness of the thin cylindrical ring, so that the smaller the thickness of the ring, the smaller the amount of thermal expansion can be.
更に、円筒リングを熱伝導度の高い材料から作
つたので、溶湯の熱は速かに冷却液に伝えられる
ので、溶湯の冷却速度を大きく設定でき、薄板製
造度を高く設定することができる。 Furthermore, since the cylindrical ring is made of a material with high thermal conductivity, the heat of the molten metal is quickly transferred to the cooling fluid, so the cooling rate of the molten metal can be set high, and the rate of thin plate production can be set high.
第４図には、従来の回転ドラムにおける製造経
過時間ｔと熱膨張量δを曲線Ｂとして併記してあ
る。この図より、本発明に係る実施例は従来例に
比し、極めて優れていることが明白である。 In FIG. 4, the manufacturing elapsed time t and the amount of thermal expansion δ in a conventional rotary drum are also shown as a curve B. From this figure, it is clear that the embodiment according to the present invention is extremely superior to the conventional example.
以上詳述したように本発明における薄板製造装
置によれば、簡単な構造で回転ドラムの熱膨張量
を小さく抑えることができ、しかも全周に亘つて
熱膨張量を一様にでき、以つて厚み品質の優れた
薄板を製造できるという優れた効果がある。 As detailed above, according to the thin plate manufacturing apparatus of the present invention, the amount of thermal expansion of the rotating drum can be suppressed to a small level with a simple structure, and the amount of thermal expansion can be made uniform over the entire circumference. This method has the excellent effect of producing thin plates with excellent thickness and quality.
第１図は、薄板製造装置の全体図、第２図は本
発明の薄板製造装置に適用される回転ドラムの要
部拡大断面図、第３図は第２図の―線断面
図、第４図は製造経過時間と回転ドラムの熱膨張
量の関係を示す図、第５図は従来の回転ドラムを
説明する図、第６図は第５図を―線方向から
見た図である。
１０……回転ドラム、１１……モータ、１６…
…先端ノズル、３０……モータの軸、３１……ド
ラム本体、３２……円筒リング、３２ａ……冷却
溝、３３……冷却液通路、ｔ……製造経過時間、
δ……回転ドラムの熱膨張量。
FIG. 1 is an overall view of the thin plate manufacturing apparatus, FIG. 2 is an enlarged sectional view of a main part of a rotating drum applied to the thin plate manufacturing apparatus of the present invention, FIG. 3 is a sectional view taken along the line -- in FIG. The figure shows the relationship between the elapsed manufacturing time and the amount of thermal expansion of the rotary drum, FIG. 5 is a diagram illustrating a conventional rotary drum, and FIG. 6 is a diagram of FIG. 5 viewed from the - line direction. 10... Rotating drum, 11... Motor, 16...
... Tip nozzle, 30 ... Motor shaft, 31 ... Drum body, 32 ... Cylindrical ring, 32a ... Cooling groove, 33 ... Coolant passage, t ... Elapsed manufacturing time,
δ...Amount of thermal expansion of the rotating drum.
Claims (1)
ム表面で溶湯を冷却、凝固して薄板を製造する装
置において、前記回転ドラムは回転ドラム本体
と、この回転ドラム本体の外周に焼嵌めされ、そ
の外面に溶湯が注出される円筒リングとから構成
し、前記円筒リング内周に円周方向に延びた冷却
溝を回転ドラムの軸方向に等間隔に複数本形成
し、更に、前記円周リングは前記回転ドラム本体
より熱伝導度の高い材料から形成したことを特徴
とする薄板製造装置。 ２ 特許請求の範囲第１項において、前記回転ド
ラム本体を鉄材より構成し、前記円筒リングを銅
材より構成したことを特徴とする薄板製造装置。[Scope of Claims] 1. In an apparatus for producing a thin plate by pouring molten metal onto a rotating drum and cooling and solidifying the molten metal on the surface of the rotating drum, the rotating drum includes a rotating drum body and an outer periphery of the rotating drum body. a cylindrical ring which is shrink-fitted to the outer surface of the cylindrical ring and from which molten metal is poured out; a plurality of cooling grooves extending circumferentially are formed on the inner periphery of the cylindrical ring at equal intervals in the axial direction of the rotating drum; . A thin plate manufacturing apparatus, wherein the circumferential ring is made of a material having higher thermal conductivity than the rotating drum body. 2. The thin plate manufacturing apparatus according to claim 1, wherein the rotating drum main body is made of iron material, and the cylindrical ring is made of copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8663480A JPS5714444A (en) | 1980-06-27 | 1980-06-27 | Thin sheet producing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8663480A JPS5714444A (en) | 1980-06-27 | 1980-06-27 | Thin sheet producing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5714444A JPS5714444A (en) | 1982-01-25 |
| JPS6137025B2 true JPS6137025B2 (en) | 1986-08-21 |
Family
ID=13892449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8663480A Granted JPS5714444A (en) | 1980-06-27 | 1980-06-27 | Thin sheet producing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5714444A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62162124U (en) * | 1986-04-05 | 1987-10-15 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU560682B2 (en) * | 1982-07-13 | 1987-04-16 | Allied Corporation | Two piece chilled casting wheel |
| JPS5954445A (en) * | 1982-09-24 | 1984-03-29 | Hitachi Ltd | Rotary cooling roll of production device for thin metallic sheet |
| JPS59143028A (en) * | 1983-02-03 | 1984-08-16 | Nippon Steel Corp | Cooler for metallic strip in continuous heat treating furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5051928A (en) * | 1973-02-13 | 1975-05-09 | ||
| JPS555111A (en) * | 1978-06-23 | 1980-01-16 | Hitachi Ltd | Manufacturing apparatus for metallic thin belt |
-
1980
- 1980-06-27 JP JP8663480A patent/JPS5714444A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5051928A (en) * | 1973-02-13 | 1975-05-09 | ||
| JPS555111A (en) * | 1978-06-23 | 1980-01-16 | Hitachi Ltd | Manufacturing apparatus for metallic thin belt |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62162124U (en) * | 1986-04-05 | 1987-10-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5714444A (en) | 1982-01-25 |
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