JPS6324071B2 - - Google Patents
Info
- Publication number
- JPS6324071B2 JPS6324071B2 JP14658783A JP14658783A JPS6324071B2 JP S6324071 B2 JPS6324071 B2 JP S6324071B2 JP 14658783 A JP14658783 A JP 14658783A JP 14658783 A JP14658783 A JP 14658783A JP S6324071 B2 JPS6324071 B2 JP S6324071B2
- Authority
- JP
- Japan
- Prior art keywords
- lining layer
- gap
- processed
- lining
- frequency coil
- 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
- 239000000463 material Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000000843 powder Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 5
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000009750 centrifugal casting Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C6/00—Coating by casting molten material on the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明はシリンダ、軸受などの各種部材の表面
にライニング層を形成する方法及びその装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method and apparatus for forming a lining layer on the surfaces of various members such as cylinders and bearings.
従来から各種部材の内面或いは外面にライニン
グ層を形成することにより耐食性、耐摩耗性をも
たせるようにしている。例えば、クラツチ、ブレ
ーキ、軸受などは常にその摩擦面が高熱にさらさ
れ、またプラスチツク成形機のスクリユー、シリ
ンダーなどはプラスチツク中に含まれる腐食性ガ
ス又はセラミツクフアイバーなどのフイラーによ
り損傷し易い。このため従来からその用途に応じ
て各種部材の表面に耐食性、耐摩耗性に優れた材
料をライニングしている。そして斯るライニング
層を形成する方法として一般に溶射法或いは遠心
鋳造法を用いている。
Conventionally, lining layers are formed on the inner or outer surfaces of various members to provide them with corrosion resistance and wear resistance. For example, the friction surfaces of clutches, brakes, bearings, etc. are constantly exposed to high heat, and the screws, cylinders, etc. of plastic molding machines are easily damaged by corrosive gases contained in the plastic or by fillers such as ceramic fibers. For this reason, the surfaces of various members have traditionally been lined with materials that have excellent corrosion resistance and wear resistance, depending on the intended use. A thermal spraying method or a centrifugal casting method is generally used to form such a lining layer.
〔背景技術の問題点〕
しかしながら、溶射法は長尺部材の内径部にラ
イニング層を形成するのが困難であり、また遠心
鋳造法にあつては、先ずライニング層を形成する
面が円形となつていることが必要であり、また部
材とライニング材との温度差が大きいと割れが発
生するため部材を加熱しなければならず、更に鋳
造時にガスを巻き込み易く且つ冷却が緩漫なため
巣が発生し易い等の問題がある。[Problems in the Background Art] However, with the thermal spraying method, it is difficult to form a lining layer on the inner diameter of a long member, and with the centrifugal casting method, the surface on which the lining layer is formed must first be circular. In addition, if there is a large temperature difference between the part and the lining material, cracks will occur, so the part must be heated.Furthermore, it is easy to entrain gas during casting, and cooling is slow, resulting in the formation of cavities. There are problems such as easy occurrence.
本発明は上述した従来の問題点を改善すべく成
したものであり、その目的とするところは、あら
ゆる形状の部材に容易にライニングを施すことが
でき、しかもライニング層自体が巣などの発生の
ない健全なものとすることができるライニング層
の形成方法及びその装置を提供するにある。
The present invention was made to improve the above-mentioned conventional problems, and its purpose is to be able to easily line members of any shape, and to prevent the lining layer itself from forming cavities. An object of the present invention is to provide a method for forming a lining layer and an apparatus therefor, which can make the lining layer non-sound.
上記目的を達成するために、本発明に係るライ
ニング層形成方法は、ライニング層を形成しよう
とする被処理体表面と型部材との間の隙間に、粉
体状のライニング材を充填せしめ、このライニン
グ材を高周波コイルによつて下方から上方へ向つ
て徐々に溶融せしめ、更に溶融したライニング材
を下方から順に冷却せしめてライニング層とする
ようにしたことをその概要とする。
In order to achieve the above object, the lining layer forming method according to the present invention fills a powdery lining material into the gap between the surface of the object to be treated and the mold member on which the lining layer is to be formed. The outline of the method is that the lining material is gradually melted from the bottom to the top using a high-frequency coil, and then the melted lining material is cooled sequentially from the bottom to form a lining layer.
また、ライニング層形成装置は被処理体を載置
する支持台と、被処理体のライニング層を形成し
ようとする面と隙間をもつて配設される型部材
と、この隙間にライニング材を供給する装置と、
隙間内のライニング材を溶融すべく被処理体に沿
つて昇降動する高周波コイルとからなることをそ
の概要とする。 In addition, the lining layer forming device includes a support base on which the object to be processed is placed, a mold member that is arranged with a gap from the surface of the object to be processed on which the lining layer is to be formed, and a lining material is supplied into this gap. a device to
Its outline is that it consists of a high-frequency coil that moves up and down along the object to be processed to melt the lining material in the gap.
以下に本発明の実施例を添付図面に基いて説明
する。
Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図はライニング層形成装置の縦断面図であ
り、基台１上にはスプリング２によつて支持板３
が支持され、この支持板３下面には振動装置４が
取付けられるとともに上面には有底筒状の支持台
５が固着されている。そして支持台５上には回転
テーブル６が設けられ、この回転テーブル６を支
持台５内のモータ７によつて回転するようにして
いる。前記振動装置４は装置全体に振動を与えて
処理される溶融体の温度の均一化とガス抜きを図
るとともに後述する粉体供給口１５をヘツド８の
上面周囲に設けたプロジエクシヨンＰで振動させ
て粉体の強制散布を行なうものである。また、モ
ータ７は被処理体１７を回転させてそれと粉体供
給部の供給口１５との相対的位置を変化させて隙
間１９に入る粉体の落下位置を変えて粉体の均一
散布を図るとともに隙間１９内の溶融体の温度の
均一化を図る。前記回転テーブル６の上方には図
示しない支柱によつて支持されたヘツド８を設
け、このヘツド８には擂り鉢状の孔９及びこの擂
り鉢状の孔の底部から二股に分れた孔１０を形成
している。そしてヘツド８と回転テーブル６との
間には環状をなす高周波コイルが昇降動自在に配
設されている。 FIG. 1 is a longitudinal sectional view of the lining layer forming apparatus, in which a support plate 3 is mounted on a base 1 by means of a spring 2.
A vibration device 4 is attached to the lower surface of the support plate 3, and a bottomed cylindrical support base 5 is fixed to the upper surface. A rotary table 6 is provided on the support base 5, and the rotary table 6 is rotated by a motor 7 within the support base 5. The vibration device 4 vibrates the entire device to equalize the temperature of the molten material being processed and degas it, and also vibrates with a projection P having a powder supply port 15 (described later) around the upper surface of the head 8. This method performs forced dispersion of powder. Further, the motor 7 rotates the object 17 to be processed and changes the relative position between the object 17 and the supply port 15 of the powder supply section, thereby changing the falling position of the powder entering the gap 19, thereby distributing the powder uniformly. At the same time, the temperature of the molten material within the gap 19 is made uniform. A head 8 supported by a support (not shown) is provided above the rotary table 6, and the head 8 has a mortar-shaped hole 9 and a hole 10 bifurcated from the bottom of the mortar-shaped hole. is formed. A ring-shaped high frequency coil is disposed between the head 8 and the rotary table 6 so as to be movable up and down.
一方、基台１の一側部には支柱１２が立設さ
れ、この支柱１２の頂部に粉体状ライニング材１
３を収容した容器１４が取付けられ、この容器１
４から斜め下方にライニング材１３の供給管１５
が延出され、この供給管１５の先端部が前記ヘツ
ド８の孔９に臨んでいる。また供給管１５の途中
にはライニング材の供給調整弁１６を設けてい
る。 On the other hand, a support 12 is erected on one side of the base 1, and a powder lining material 1 is placed on the top of the support 12.
A container 14 containing 3 is attached, and this container 1
Supply pipe 15 for lining material 13 diagonally downward from 4
is extended, and the tip of this supply pipe 15 faces the hole 9 of the head 8. Further, a lining material supply regulating valve 16 is provided in the middle of the supply pipe 15.
以上において、回転テーブル６上に被処理体１
７を載せる。この被処理体１７としては例えばプ
ラスチツクの射出成形機或いは押出機のシリンダ
とする。そして、被処理体１７の内部に型部材１
８（本実施例にあつてはインナースリーブ）をセ
ツトし、被処理体１７の内周面つまりライニング
層を形成しようとする面と型部材１８との間に隙
間１９を形成する。尚、被処理体１７を回転テー
ブル６上に載置するにあたつては、被処理体１７
の外周面と高周波コイル１１との間に所定の間隔
が保たれるようにする。 In the above, the object to be processed 1 is placed on the rotary table 6.
Put 7. The object to be processed 17 is, for example, a cylinder of a plastic injection molding machine or an extrusion machine. Then, the mold member 1 is placed inside the object 17 to be processed.
8 (inner sleeve in this embodiment), and a gap 19 is formed between the inner circumferential surface of the object to be processed 17, that is, the surface on which the lining layer is to be formed, and the mold member 18. Note that when placing the object to be processed 17 on the rotary table 6, the object to be processed 17
A predetermined distance is maintained between the outer peripheral surface of the high-frequency coil 11 and the high-frequency coil 11.
そして被処理体１７内に型部材１８をセツトし
たならば、被処理体１７の上端部を前記ヘツド８
によつて固定する。この場合ヘツド８の二股状の
孔１０を隙間１９の上端部と一致せしめる。次い
で、ヘツド８の上方から孔９，１０を介して型部
材１８内にガス導入パイプ２０の下端部を挿入す
る。 After the mold member 18 is set inside the object 17, the upper end of the object 17 is placed in the head 8.
Fix by. In this case, the bifurcated hole 10 of the head 8 is aligned with the upper end of the gap 19. Next, the lower end of the gas introduction pipe 20 is inserted into the mold member 18 from above the head 8 through the holes 9 and 10.
而る後、高周波コイル１１を被処理体１７の下
部近傍に位置せしめ、被処理体１７の肉厚等に応
じて高周波コイルに１〜100KHzの周波数をかけ
被処理体１７を加熱する。 Thereafter, the high-frequency coil 11 is positioned near the bottom of the object 17 to be processed, and the object 17 to be processed is heated by applying a frequency of 1 to 100 KHz to the high-frequency coil depending on the thickness of the object 17 to be processed.
そして被処理体１７の温度を光温度計によつて
測定し、その温度が1100〜1250℃になつたなら
ば、前記ガス導入パイプ２０から隙間内にCO2、
Ar、N2等の不活性ガスを導入し、隙間１９内を
無酸化雰囲気とするとともに、モータ７によつて
回転テーブル６を毎分50〜200回転の速度で回転
し被処理体１７の温度を一定とする。 Then, the temperature of the object to be treated 17 is measured with an optical thermometer, and when the temperature reaches 1100 to 1250°C, CO 2 is introduced into the gap from the gas introduction pipe 20,
An inert gas such as Ar or N 2 is introduced to create a non-oxidizing atmosphere in the gap 19, and the motor 7 rotates the rotary table 6 at a speed of 50 to 200 revolutions per minute to control the temperature of the object 17. is constant.
また、上記と併行して振動装置４を駆動せしめ
て被処理体１７を振動させつつ調整弁１６を開と
し、隙間１９内に粉体状ライニング材１３を一定
量づつ連続的に落下せしめる。ここでライニング
材としては、例えばNi系の自溶合金（Ni；Bal、
Cr13％、Si4％、B4％）、Co系の自溶合金（Co；
Bal、Cr19％、Si8％、B4％）又はこれらの自溶
合金にWC粉体を10〜70％の割合で含有せしめて
なる混合粉体等を用いる。 In addition, in parallel with the above, the vibration device 4 is driven to vibrate the object 17 to be treated, and the regulating valve 16 is opened to cause the powdered lining material 13 to fall continuously into the gap 19 in a constant amount. Here, the lining material is, for example, a Ni-based self-fluxing alloy (Ni; Bal,
Cr13%, Si4%, B4%), Co-based self-fluxing alloy (Co;
(Bal, 19% Cr, 8% Si, 4% B) or a mixed powder containing WC powder in a self-fluxing alloy thereof in a proportion of 10 to 70% is used.
このようにして、隙間１９内に落下したライニ
ング材１３のうち、隙間１９の下部まで落下した
ライニング材１３が高周波コイル１１によつて加
熱せしめられ、隙間下部にライニング材の溶融帯
２１を形成する。そして、隙間１９の下部に溶融
帯２１が形成されたならば高周波コイルを徐々に
上昇せしめる。すると、溶融体２１が形成される
位置が徐々に上方に移動するとともに、高周波コ
イル１１が通過した部分の溶融体２１は冷却凝固
してそこにライニング層が形成される。このよう
にして被処理体１７の内周面にライニング層を形
成した後、型部材１８を切削加工或いは溶融法に
より除去することで製品を得る。 In this way, among the lining materials 13 that have fallen into the gap 19, the lining materials 13 that have fallen to the bottom of the gap 19 are heated by the high frequency coil 11, forming a molten zone 21 of the lining material at the bottom of the gap. . Then, once the melted zone 21 is formed at the bottom of the gap 19, the high frequency coil is gradually raised. Then, the position where the melt 21 is formed gradually moves upward, and the portion of the melt 21 through which the high-frequency coil 11 has passed is cooled and solidified to form a lining layer there. After forming the lining layer on the inner peripheral surface of the object to be processed 17 in this manner, the mold member 18 is removed by cutting or melting to obtain a product.
第２図及び第３図は別実施例を示すものであ
り、第２図に示した実施例は被処理体１７が円筒
状でなく、ライニング層を形成する面が円筒を２
つ連ねた如き形状をなし、内部に２本の型部材１
８，１８をセツトしている。また第３図に示す実
施例にあつては被処理体１７のライニング層を形
成する面が、３個の円筒を連ねた如き形状をな
し、内部に３本の型部材１８，１８，１８をセツ
トしている。また高周波コイル１１もそれぞれの
被処理体１７の外周部形状に倣つた形状となつて
いる。このように本発明方法は、ライニング層が
形成される面の形状及び被処理体１７の形状に左
右されず、いかなる形状であつても対応できる。 FIGS. 2 and 3 show another embodiment. In the embodiment shown in FIG.
It has a shape that looks like a chain, and there are two mold members 1 inside.
8,18 are set. In the embodiment shown in FIG. 3, the surface of the object 17 on which the lining layer is formed has a shape similar to that of three cylinders arranged in a row, and three mold members 18, 18, 18 are arranged inside. It is set. Further, the high frequency coil 11 also has a shape that follows the shape of the outer peripheral portion of each object 17 to be processed. In this way, the method of the present invention is not affected by the shape of the surface on which the lining layer is formed or the shape of the object to be processed 17, and can be applied to any shape.
尚、図示例にあつては被処理体の内周面にライ
ニングを施す場合について説明したが、本発明方
法及び装置によれば被処理体の外周面にライニン
グを施すことができる。 In the illustrated example, a case has been described in which the inner peripheral surface of the object to be processed is lined, but according to the method and apparatus of the present invention, lining can be applied to the outer peripheral surface of the object to be processed.
以上に説明した如く本発明によれば、被処理体
の形状に左右されず、複雑な形状の部材にもライ
ニングを施すことができ、また形成されるライニ
ング層は、粉体を原料としているため短時間に溶
融し、しかも溶融帯の巾が小さいため溶融帯中の
ガスの放出が効果的になされ、結果として巣など
の欠陥のないライニング層が得られ、更に、ライ
ニング層の厚みも任意に設定できる等多くの効果
を奏する。
As explained above, according to the present invention, it is possible to line a member with a complicated shape regardless of the shape of the object to be processed, and the lining layer formed is made of powder. Since it melts in a short time and the width of the molten zone is small, the gas in the molten zone is effectively released, resulting in a lining layer without defects such as cavities, and the thickness of the lining layer can be adjusted as desired. It has many effects such as being able to be set.
第１図は本発明に係るライニング層形成装置の
縦断面図、第２図及び第３図は別実施例を示す横
断面図である。
１……基台、４……振動装置、６……回転テー
ブル、８……ヘツド、１１……高周波コイル、１
３……粉体状ライニング材、１７……被処理体、
１８……型部材、１９……隙間、２１……溶融
帯。
FIG. 1 is a longitudinal cross-sectional view of a lining layer forming apparatus according to the present invention, and FIGS. 2 and 3 are cross-sectional views showing another embodiment. 1...Base, 4...Vibration device, 6...Rotary table, 8...Head, 11...High frequency coil, 1
3... powder lining material, 17... object to be treated,
18... Mold member, 19... Gap, 21... Molten zone.
Claims (1)
の被処理体表面に倣つて型部材を配設し、この型
部材と被処理体表面との間に隙間を形成し、この
隙間に上方から粉体状ライニング材を落下させ被
処理体の周囲に高周波コイルを配設し、この高周
波コイルによつて該隙間の下部から充填されたラ
イニング材を溶融せしめて溶融帯とし、高周波コ
イルを漸いに上昇させることにより該溶融帯を上
方へ移動せしめるとともに、高周波コイルが通過
した部分の溶融帯を冷却してライニング層を形成
し、この後前記型部材を除去するようにしたこと
を特徴とするライニング層形成方法。 ２ 前記高周波コイルによつてライニング材を溶
融する間、被処理体を振動せしめるようにしたこ
とを特徴とする特許請求の範囲第１項記載のライ
ニング層形成方法。 ３ 前記ライニング層の形成は無酸化雰囲気にお
いて行なうことを特徴とする特許請求の範囲第１
項記載のライニング層形成方法。 ４ 被処理体を載置する支持台と、この被処理体
のライニング層を形成する面とこの面と隙間を配
して配設される型部材と、該隙間に粉体状のライ
ニング材を供給すべく被処理体の上方に配設され
るライニング材供給装置と、被処理体に沿つて昇
降動する高周波コイルとを備えたことを特徴とす
るライニング層形成装置。 ５ 前記支持台には振動装置が設けられているこ
とを特徴とする特許請求の範囲第４項記載のライ
ニング層形成装置。 ６ 前記隙間内にはガス導入管を介して不活性ガ
スが充填されるようにしたことを特徴とする特許
請求の範囲第４項記載のライニング層形成装置。[Scope of Claims] 1. A mold member is arranged to follow the surface of the object to be processed on which the lining layer is formed, and a gap is formed between the mold member and the surface of the object to be processed, A powdered lining material is dropped from above into this gap, a high frequency coil is arranged around the object to be processed, and the high frequency coil melts the lining material filled from the bottom of the gap to form a molten zone, By gradually raising the high-frequency coil, the molten zone is moved upward, and the molten zone through which the high-frequency coil passes is cooled to form a lining layer, after which the mold member is removed. A lining layer forming method characterized by: 2. The lining layer forming method according to claim 1, wherein the object to be processed is vibrated while the lining material is melted by the high-frequency coil. 3. Claim 1, wherein the lining layer is formed in a non-oxidizing atmosphere.
The lining layer forming method described in . 4. A support base on which the object to be processed is placed, a surface forming the lining layer of the object to be processed, a mold member disposed with a gap between this surface and the gap, and a powder-like lining material placed in the gap. A lining layer forming apparatus comprising: a lining material supply device disposed above an object to be treated; and a high-frequency coil that moves up and down along the object. 5. The lining layer forming apparatus according to claim 4, wherein the support table is provided with a vibration device. 6. The lining layer forming apparatus according to claim 4, wherein the gap is filled with an inert gas through a gas introduction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14658783A JPS6039172A (en) | 1983-08-12 | 1983-08-12 | Method and apparatus for forming lining layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14658783A JPS6039172A (en) | 1983-08-12 | 1983-08-12 | Method and apparatus for forming lining layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6039172A JPS6039172A (en) | 1985-02-28 |
| JPS6324071B2 true JPS6324071B2 (en) | 1988-05-19 |
Family
ID=15411080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14658783A Granted JPS6039172A (en) | 1983-08-12 | 1983-08-12 | Method and apparatus for forming lining layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01130861U (en) * | 1988-03-01 | 1989-09-06 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05331613A (en) * | 1992-03-30 | 1993-12-14 | Kubota Corp | Production of cylindrical body with coating layer |
| JPH09279362A (en) * | 1996-04-11 | 1997-10-28 | Tokushu Denkyoku Kk | Surface treatment for metallic member |
-
1983
- 1983-08-12 JP JP14658783A patent/JPS6039172A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01130861U (en) * | 1988-03-01 | 1989-09-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6039172A (en) | 1985-02-28 |
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