JPH0512105B2 - - Google Patents
Info
- Publication number
- JPH0512105B2 JPH0512105B2 JP62015371A JP1537187A JPH0512105B2 JP H0512105 B2 JPH0512105 B2 JP H0512105B2 JP 62015371 A JP62015371 A JP 62015371A JP 1537187 A JP1537187 A JP 1537187A JP H0512105 B2 JPH0512105 B2 JP H0512105B2
- Authority
- JP
- Japan
- Prior art keywords
- header
- pressure fluid
- workpiece
- headers
- axis
- 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
- 239000012530 fluid Substances 0.000 claims description 29
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000012784 inorganic fiber Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は高圧流体処理装置であつて、プラスチ
ツク、セラミツク等の成形物又は無機繊維織布等
に高圧流体を噴射してバリ取り加工、洗浄或いは
無機繊維織布表面の起毛処理等に適する高圧流体
処理装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a high-pressure fluid treatment device that sprays high-pressure fluid onto molded products such as plastics and ceramics, or inorganic fiber woven fabrics, etc. to deburr and clean them. Alternatively, the present invention relates to a high-pressure fluid treatment device suitable for raising the surface of an inorganic fiber woven fabric.
高圧流体装置は非金属材料、石材、コンクリー
ト等の切断、穿孔等に用いられている（特公昭57
−22692号公報参照）。
High-pressure fluid equipment is used for cutting and drilling non-metallic materials, stones, concrete, etc.
-Refer to Publication No. 22692).
前記高圧流体加工装置は(1)切断代が小さい、(2)
材料の無駄が少ない(3)粉塵の発生がない(4)切削又
は切断時の熱の発生がない等の利点から近年巾広
く使用されるに至つている。 The high-pressure fluid machining device has (1) a small cutting allowance; (2)
It has become widely used in recent years due to its advantages such as (3) no generation of dust, (4) no generation of heat during cutting or cutting.
しかし、前記公知の高圧流体加工装置は、主と
して非金属材料、石材、コンクリート等の切断、
穿孔に使用するものであるため、数千Kg／cm2の超
高圧水を口径0.1〜0.5mmのノズルから噴射させて
高速流体エネルギーに変換し、その高速流体エネ
ルギーにより非金属等の切断、穿孔を行うもので
あるため、広い表面積を有する所謂広巾物の表面
を均一に加工するには必らずしも充分ではない。 However, the known high-pressure fluid processing equipment is mainly used for cutting non-metallic materials, stone, concrete, etc.
Since it is used for drilling, ultra-high pressure water of several thousand kg/cm 2 is injected from a nozzle with a diameter of 0.1 to 0.5 mm and converted into high-speed fluid energy.The high-speed fluid energy can be used to cut and drill non-metals, etc. Therefore, it is not necessarily sufficient to uniformly process the surface of a so-called wide object having a large surface area.
本発明は広い表面積を有する広巾物の表面を均
一に加工処理することができる高圧流体処理装置
を提供するものである。
The present invention provides a high-pressure fluid treatment device that can uniformly process the surface of a wide object having a large surface area.
本発明は被処理物の移送路を横切り、かつ、該
被処理物の巾方向に対し、バイヤス角θを設けて
ヘツダーが取付けられており、該ヘツダーはヘツ
ダー長さ方向を揺動軸として往復揺動させる駆動
装置に結合されていると共に、被処理物に対向す
る部分に間隔Poを存して複数のノズルが形成さ
れており、被処理物を移送すると共に、ヘツダー
を軸回りに往復揺動させ、同時に複数のノズルか
ら高圧流体を噴射して被処理物に高圧流体を均一
に噴射処理するように構成された高圧流体処理装
置である。
In the present invention, a header is installed across the transfer path of the workpiece and at a bias angle θ with respect to the width direction of the workpiece, and the header reciprocates with the header length direction as a swing axis. The header is coupled to a swinging drive device, and a plurality of nozzles are formed at intervals Po in the part facing the object to be processed. This is a high-pressure fluid processing device configured to uniformly spray high-pressure fluid onto a workpiece by simultaneously ejecting high-pressure fluid from a plurality of nozzles.
本発明は以上の如き構成のものからなり、ヘツ
ダーにはフレキシブルホースが連結されており、
該ホースによつて高圧流体をヘツダーに供給する
ようになつている。
The present invention has the above configuration, and a flexible hose is connected to the header.
The hose is adapted to supply high pressure fluid to the header.
前記ヘツダーは被処理物の巾方向に対しバイア
ス角θを設けて取付けられていると共に、ヘツダ
ーの長さ方向の軸を揺動軸として往復揺動するよ
うになつている。前記ヘツダーの往復揺動は、軸
回りに15〜40°の角度内で往復揺動運動するもの
で、その駆動手段は特に問わないが、例えばヘツ
ダー両端にレバーを取付け、一方のレバーに偏心
カムを接触させ、該偏心カムを回転することによ
つてヘツダーを軸回りに往復揺動させることがで
きる。 The header is mounted at a bias angle θ with respect to the width direction of the object to be processed, and is configured to swing back and forth about an axis in the length direction of the header as a swing axis. The reciprocating motion of the header is a reciprocating motion within an angle of 15 to 40 degrees around the axis, and the driving means is not particularly limited, but for example, levers are attached to both ends of the header, and an eccentric cam is attached to one lever. By bringing these into contact with each other and rotating the eccentric cam, the header can be reciprocated about the axis.
また、前記ヘツダーは被処理物に対向する部分
に間隔Poを存して複数のノズルが形成されてお
り、ヘツダーの往復揺動に伴なつて複数のノズル
先端が同一角度で往復揺動する。 Further, the header has a plurality of nozzles formed at intervals Po in a portion facing the object to be processed, and as the header swings back and forth, the tips of the plurality of nozzles swing back and forth at the same angle.
さらに、前記ヘツダーは１個に限定されるもの
ではなく、２個以上取付けることもできる。この
場合、ヘツダーのバイアス角度は巾方向の線分の
両側に順次対象となるようにバイアス角度θを設
け、複数のヘツダーが被処理物の移送路上でジグ
ザグ状に取付けることが望ましい。 Furthermore, the number of the headers is not limited to one, and two or more headers may be attached. In this case, it is desirable that the bias angles of the headers are set so that bias angles θ are sequentially symmetrical on both sides of the line segment in the width direction, and that a plurality of headers are installed in a zigzag pattern on the transfer path of the processed material.
本発明を使用するには、ヘツダーに高圧流体を
供給し、複数のノズルから高圧流体を噴射させる
と共に、駆動装置をONしてヘツダーを軸回りに
往復揺動させ、前記高圧流体の噴射されている下
側に被処理物の移送路に従つて広巾の被処理物を
送り込む。 To use the present invention, high-pressure fluid is supplied to the header, the high-pressure fluid is injected from a plurality of nozzles, and the drive device is turned on to swing the header back and forth around its axis, so that the high-pressure fluid is injected. A wide object to be processed is fed into the lower side along the transfer path of the object to be processed.
この場合、被処理物に対する高圧流体は被処理
物の送り込み速度（ライン速度）と、ヘツダーの
軸回りの往復揺動との合成作用によつて被処理物
上をジグザグ状に噴射される。 In this case, the high-pressure fluid is sprayed onto the workpiece in a zigzag pattern due to the combined action of the feeding speed (line speed) of the workpiece and the reciprocating motion of the header around the axis.
第５図は２個のヘツダーが線分ｌを対称軸と
し、かつ、バイヤス角30°で夫々取付けられてい
る場合の高圧流体の噴射軌跡の一例を示したもの
である。尚、第５図中符号Ｈはヘツダー、Poは
ヘツダーに形成されている複数のノズルの間隔で
ある。 FIG. 5 shows an example of the injection trajectory of high-pressure fluid when two headers are installed with the line segment l as the axis of symmetry and at a bias angle of 30°. In FIG. 5, the symbol H is the header, and Po is the interval between the plurality of nozzles formed in the header.
発明者等の研究によれば、高圧流体の噴射軌跡
は次の如き式に従う。 According to research by the inventors, the jet trajectory of high-pressure fluid follows the following formula.
y1＝1000V／2N＋2Rtanα・Cosθ
y2＝1000V／2N−2R・tanα・Cosθ
但し、y1：被処理物の移送方向の軌跡の長さ
y2：被処理物の移送方向と逆方向の軌跡の長
さ
Ｖ：ライン速度（ｍ／分）
Ｎ：ヘツダーの往復揺動数（回／分）
Ｒ：ヘツダー軸芯と被処理物の間隔
α：ヘツダーの最大往復揺動角の1/2
θ：ヘツダーのバイヤス角
従つて、高圧流体の被処理物に対する軌跡は被
処理物の走行方向へヘツダーが揺動するときには
長い直線となり、またヘツダーの揺動が被処理物
の走行方向と逆方向の場合には短い直線となり、
前記２つの直線からなる複数のジグザグ状の折線
からなる群の軌跡として得られる。 y1=1000V/2N+2Rtanα・Cosθ y2=1000V/2N−2R・tanα・Cosθ However, y1: Length of the trajectory in the transfer direction of the processed object y2: Length of the trajectory in the opposite direction to the transfer direction of the processed object V : Line speed (m/min) N: Number of header reciprocating swings (times/min) R: Distance between header axis and workpiece α: 1/2 of header maximum reciprocating swing angle θ: Header bias Therefore, the trajectory of the high-pressure fluid relative to the workpiece becomes a long straight line when the header swings in the direction of travel of the workpiece, and becomes a short straight line when the header swings in the opposite direction to the travel direction of the workpiece. It becomes a straight line,
It is obtained as a locus of a group consisting of a plurality of zigzag broken lines formed from the two straight lines.
また、この場合２本のヘツダーに形成されてい
る複数のノズルを一直線上に配置するか又はジグ
ザグ状に配置し、両者のヘツダー位置を互いにズ
ラすことによつて第５図に示すように２つの高圧
流体の噴射軌跡がオーバーラツプし、広巾の被処
理物表面に均一に噴射できる。 In this case, by arranging the plurality of nozzles formed on the two headers in a straight line or in a zigzag pattern, and shifting the positions of both headers from each other, two The injection trajectories of the two high-pressure fluids overlap, allowing uniform injection over a wide range of surfaces.
尚、この場合ヘツダーのバイヤス角及びヘツダ
ーのノズル間隔を適宜変更することによつて、目
的に応じ高圧流体噴射の軌跡のオーバーラツプを
多くしたり又は少なくする等任意に採択すること
ができる。 In this case, by appropriately changing the bias angle of the header and the nozzle spacing of the header, it is possible to increase or decrease the overlap in the trajectories of high-pressure fluid injection depending on the purpose.
本発明における高圧流体の噴射圧は被処理物の
形状、材質若しくは目的又はライン速度等を勘案
して50〜1000Kg／cm2の範囲内で適宜選択すること
ができ、従つてプラスチツク成形品のバリ取り、
洗浄又は無機繊維織布の表面処理等各種の用途に
適用することができる。 The injection pressure of the high-pressure fluid in the present invention can be appropriately selected within the range of 50 to 1000 kg/cm 2 taking into consideration the shape, material, purpose, line speed, etc. of the object to be treated. take,
It can be applied to various uses such as cleaning or surface treatment of inorganic fiber woven fabrics.
さらに本発明の駆動装置はヘツダーを往復揺動
するのみで足りるから動力費も少なく、従つて処
理コストを低減することができる。 Further, since the drive device of the present invention only needs to swing the header back and forth, the power cost is low, and therefore the processing cost can be reduced.
第１図及び第２図は本発明の一実施例である
が、つぎにこれら図面に基づいて本発明を具体的
に説明する。本発明は架台１とヘツダー２とから
なつている。架台１は被処理物をその表面に載置
して走行させるようになつている。
FIG. 1 and FIG. 2 show one embodiment of the present invention, and the present invention will now be specifically explained based on these drawings. The present invention consists of a pedestal 1 and a header 2. The pedestal 1 is configured to carry the object to be processed on its surface.
ヘツダー２は、被処理物の巾方向に、線分ｌを
対称軸とし、かつ、夫々バイヤス角θで２個取付
けられている。 Two headers 2 are installed in the width direction of the object to be processed, with the line segment 1 being the axis of symmetry, and each having a bias angle θ.
前記ヘツダー２は架台１両端の支持台３上の軸
受４を介して取付けられており、該２つの支持台
３の両外側端に夫々レバー５ａ，５ｂが取付けら
れている。 The header 2 is attached via bearings 4 on support stands 3 at both ends of the pedestal 1, and levers 5a and 5b are attached to both outer ends of the two support stands 3, respectively.
前記レバー５ａは第３図に示すようにヘツダー
２を挟んで両側に水平なバー６ａ，６ｂが形成さ
れており、一方のバー６ａの下部に、該バー６ａ
の下面に接触して摺動回転する偏心カム７が取付
けられていると共に、他方のバー６ｂは縮設され
ているスプリング８ａを介して支持台３に取付け
られている。前記縮設されているスプリング８ａ
は、一方のバー６ａが偏心カム７の回転によつて
生ずる上下動に追随して他方のバー６ｂを作動さ
せ、従つてヘツダー２の往復揺動運動をスムース
ならしめるものである。 As shown in FIG. 3, the lever 5a has horizontal bars 6a and 6b formed on both sides with the header 2 in between.
An eccentric cam 7 is attached which slides and rotates in contact with the lower surface of the bar 6, and the other bar 6b is attached to the support base 3 via a compressed spring 8a. The contracted spring 8a
One bar 6a operates the other bar 6b following the vertical movement caused by the rotation of the eccentric cam 7, thereby smoothing the reciprocating rocking motion of the header 2.
また、他方のレバー５ｂは第４図に示すように
片側に水平なバー９が形成されており、該バー９
は縮設されているスプリング８ｂを介して支持台
３に取付けられ、前記ヘツダー２の往復揺動を補
助している。 The other lever 5b has a horizontal bar 9 formed on one side as shown in FIG.
is attached to the support base 3 via a compressed spring 8b, and assists the reciprocating swing of the header 2.
尚、前記ヘツダー２上部には、ほゞ等間隔に３
本のフレキシブルホース１０が取付けられている
と共に、下側に間隔Po（７mm以上）を存して複数
のノズル１１が取付けられている。該複数のノズ
ル１１は一直線上又はジグザグ状の何れの配置で
あつてもよい。尚、第１図及び第２図中符号１２
は被処理物、Ｍはモーターである。 Furthermore, on the top of the header 2, there are three
A flexible hose 10 is attached, and a plurality of nozzles 11 are attached to the lower side with an interval Po (7 mm or more). The plurality of nozzles 11 may be arranged in a straight line or in a zigzag pattern. In addition, the reference numeral 12 in Figures 1 and 2
is the object to be processed, and M is the motor.
本発明は次のようにして使用する。即ち、フレ
キシブルホース１０からヘツダー２へ高圧流体を
供給し、モーターＭを駆動すると共に、架台１上
の被処理物１２を矢印方向へ走行させる。 The invention is used as follows. That is, high-pressure fluid is supplied from the flexible hose 10 to the header 2 to drive the motor M, and at the same time, the workpiece 12 on the pedestal 1 is moved in the direction of the arrow.
ヘツダー２は偏心カム７の回転によつて第３図
に示すようにヘツダー２の軸回りに最大角2αで
往復揺動する。 The header 2 swings back and forth around the axis of the header 2 at a maximum angle of 2α as shown in FIG. 3 by the rotation of the eccentric cam 7.
他方、被処理物１２は、第２図中矢印方向へ速
度Ｖで走行し、その結果前述第５図に示すように
被処理物１２上の高圧流体の軌跡はジグザグ状の
ものとして噴射される。 On the other hand, the object 12 to be treated travels in the direction of the arrow in FIG. 2 at a speed V, and as a result, as shown in FIG. .
尚、図示例ではヘツダーが２個取付けられてい
るがこれに限定されるものではなく、必要に応じ
て３個以上取付けることができるほか、そのバイ
ヤス角も任意に採択でき、さらにヘツダー２の最
大往復揺動角、揺動速度等も任意に採択できる。 Although two headers are installed in the illustrated example, the present invention is not limited to this. Three or more headers can be installed as needed, and the bias angle can be arbitrarily selected. The reciprocating swing angle, swing speed, etc. can also be arbitrarily selected.
従つて、本発明は被処理物１２の形状、材質若
しくは目的又はそのライン速度等によつてヘツダ
ーの数の増減、バイヤス角の変更並びにヘツダー
の往復揺動の角度又は揺動速度等を任意に変更す
ることができる。 Therefore, the present invention allows the number of headers to be increased or decreased, the bias angle to be changed, and the angle or rocking speed of the reciprocating header to be changed depending on the shape, material, or purpose of the workpiece 12 or its line speed. Can be changed.
以上の如く本発明は広巾の被処理物に高圧流体
処理するに当り、被処理物の巾方向にバイヤス角
を設けてヘツダーを取付け、かつ、該ヘツダーを
軸回りに往復揺動させるという簡単な手段で被処
理物表面に高圧流体を噴射でき、しかもヘツダー
のバイヤス角、本数さらにはヘツダーの最大往復
揺動角、揺動速度等も任意に変更できるから、高
圧流体を巾広く均一に噴射することができ、従つ
てプラスチツクのバリ取り、洗浄又は無機繊維織
布の表面処理等広い用途に適用することができ
る。
As described above, when treating a wide workpiece with high-pressure fluid, the present invention provides a simple method of installing a header with a bias angle in the width direction of the workpiece and swinging the header back and forth around an axis. The high-pressure fluid can be sprayed onto the surface of the workpiece using the method, and the bias angle and number of headers, as well as the maximum reciprocating swing angle and swing speed of the headers can be changed as desired, so the high-pressure fluid can be sprayed widely and uniformly. Therefore, it can be applied to a wide range of applications such as deburring and cleaning plastics and surface treatment of inorganic fiber fabrics.
第１図は本発明の一実施例の正面図、第２図は
平面図、第３図はヘツダーの揺動の説明図、第４
図は他方のレバーの取付状態を示す説明図、第５
図は高圧流体の軌跡の一例の説明図である。
１：架台、２：ヘツダー、３：支持台、４：軸
受、５ａ，５ｂ：レバー、６ａ，６ｂ，９：レバ
ーのバー、７：偏心カム、８ａ，８ｂ：スプリン
グ、１０：フレキシブルホース、１１：ノズル、
１２：被処理物。
Fig. 1 is a front view of one embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is an explanatory diagram of the swinging of the header, and Fig. 4 is an illustration of the swinging of the header.
The figure is an explanatory diagram showing the installation state of the other lever, the fifth
The figure is an explanatory diagram of an example of the trajectory of high-pressure fluid. 1: Frame, 2: Header, 3: Support stand, 4: Bearing, 5a, 5b: Lever, 6a, 6b, 9: Lever bar, 7: Eccentric cam, 8a, 8b: Spring, 10: Flexible hose, 11 :nozzle,
12: Object to be treated.
Claims (1)
物の巾方向に対しバイヤス角θを設けてヘツダー
が取付けられており、該ヘツダーはヘツダー長さ
方向を揺動軸として往復揺動させる駆動装置に結
合されていると共に、被処理物に対向する部分に
間隔Poを存して複数のノズルが形成されている
ことを特徴とする高圧流体処理装置。1. A header is installed across the transfer path of the workpiece and at a bias angle θ with respect to the width direction of the workpiece, and the header is reciprocated with the header length direction as the rocking axis. 1. A high-pressure fluid treatment device, which is connected to a drive device and has a plurality of nozzles formed at a distance Po at a portion facing an object to be treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62015371A JPS63185575A (en) | 1987-01-26 | 1987-01-26 | High pressure fluid handling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62015371A JPS63185575A (en) | 1987-01-26 | 1987-01-26 | High pressure fluid handling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63185575A JPS63185575A (en) | 1988-08-01 |
| JPH0512105B2 true JPH0512105B2 (en) | 1993-02-17 |
Family
ID=11886923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62015371A Granted JPS63185575A (en) | 1987-01-26 | 1987-01-26 | High pressure fluid handling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63185575A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02237663A (en) * | 1990-01-16 | 1990-09-20 | Toshio Sugano | Water-jet gun |
| JPH0463680A (en) * | 1990-07-04 | 1992-02-28 | Eikichi Yamaharu | Continuous blast treating device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119321A (en) * | 1984-11-13 | 1986-06-06 | Ishikawajima Harima Heavy Ind Co Ltd | Descaling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60160915U (en) * | 1984-04-03 | 1985-10-25 | 石川島播磨重工業株式会社 | Wet descaling equipment |
-
1987
- 1987-01-26 JP JP62015371A patent/JPS63185575A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61119321A (en) * | 1984-11-13 | 1986-06-06 | Ishikawajima Harima Heavy Ind Co Ltd | Descaling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63185575A (en) | 1988-08-01 |
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