JP2009119489A - Method of removing liquid stuck to inner surface of steel tube - Google Patents

Method of removing liquid stuck to inner surface of steel tube Download PDF

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JP2009119489A
JP2009119489A JP2007295139A JP2007295139A JP2009119489A JP 2009119489 A JP2009119489 A JP 2009119489A JP 2007295139 A JP2007295139 A JP 2007295139A JP 2007295139 A JP2007295139 A JP 2007295139A JP 2009119489 A JP2009119489 A JP 2009119489A
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steel pipe
air blow
steel tube
dust collector
liquid adhering
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JP4932680B2 (en
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Takahiro Kaihatsu
高裕 改發
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Sanyo Special Steel Co Ltd
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Sanyo Special Steel Co Ltd
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    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of removing the liquid stuck to the inner surface of a steel tube after cold working and pickling treatment in the manufacturing process of the steel tube. <P>SOLUTION: The invention relates to a method of removing the liquid stuck to the inner surface of the steel tube after cold working and pickling treatment in the manufacturing process of the steel tube. The method is excellent in removal efficiency and is characterized in that the liquid stuck to the inner surface of the steel tube 1 is removed by inserting a nozzle for air blowing into the inner surface of the steel tube 1 and also the mist generated by the air blow is withdrawn by arranging a dust catcher 4 in a place ≤200 mm away from the end face of the steel tube. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、鋼管の製造工程において冷間加工や酸洗処理の後に鋼管内面に付着した液体の除去方法に関し、特に作業環境と鋼管内面付着液体の除去効率に優れた鋼管内面付着液体の除去方法に関する。   The present invention relates to a method for removing liquid adhering to the inner surface of a steel pipe after cold working or pickling treatment in the manufacturing process of the steel pipe, and in particular, a method for removing the liquid adhering to the inner surface of the steel pipe excellent in the working environment and the efficiency of removing the liquid adhering to the inner surface of the steel pipe. About.

従来、冷間加工後に鋼管内面に付着する潤滑油や熱間押し出し法・傾斜圧延法などの後に行う酸洗処理後に鋼管内面に付着する酸洗液などは鋼管内面の錆や腐食の原因となっている。この鋼管内面に付着した液体の除去方法としてはエアブローが使用されている。例えばコールドピルガーを例にとってみると、熱間圧延された母材を冷間圧延し、外径及び肉厚を減少させ、目標とする外径及び肉厚に加工するために、肉厚は母材の内面に挿入されたマンドレルで決定され加工される。この加工の際にマンドレルと母材内面の間に摩擦熱と加工熱が発生する。この摩擦熱及び加工熱を冷却するために内面潤滑油と外面潤滑油が供給されている。   Conventionally, the lubricating oil adhering to the inner surface of the steel pipe after cold working and the pickling solution adhering to the inner surface of the steel pipe after the pickling treatment performed after the hot extrusion method or the inclined rolling method cause rust and corrosion of the inner surface of the steel pipe. ing. Air blow is used as a method for removing the liquid adhering to the inner surface of the steel pipe. For example, in the case of a cold pilger, the wall thickness is the base material for cold rolling the hot-rolled base material, reducing the outer diameter and thickness, and processing to the target outer diameter and thickness. It is determined and processed by a mandrel inserted into the inner surface of the material. During this processing, frictional heat and processing heat are generated between the mandrel and the inner surface of the base material. In order to cool this frictional heat and processing heat, inner surface lubricating oil and outer surface lubricating oil are supplied.

一方、鋼管の外面に付着した外面潤滑油はエアブロー装置やゴム板等により取り除かれ、コールドピルガー域外への持ち出しを防いでいる。また、内面潤滑油に関しては、例えば特開２０００−１０５５７４号公報（特許文献１）に開示されているように、内面潤滑油の残留により鋼管内面錆が発生するなどの問題があるため、従来は図７に示すエアブロー装置により除去されている。   On the other hand, the outer surface lubricating oil adhering to the outer surface of the steel pipe is removed by an air blow device, a rubber plate, or the like to prevent taking out of the cold pilger area. Further, regarding the inner surface lubricating oil, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-105574 (Patent Document 1), there is a problem that the inner surface rust of the steel pipe is generated due to the remaining inner surface lubricating oil. It has been removed by the air blowing device shown in FIG.

図７は、従来の鋼管内面のエアブロー装置を示す図である。この図に示すように、鋼管１の内面にエアブローを行い鋼管内面に付着した潤滑油を除去する際、エアブロー装置２を固定し、鋼管１の後端面をエアブロー装置２側に寄せて行っている。このような状態でエアブローを実施すると反対側の鋼管先端面から、除去された潤滑油は油煙３となって吹き出し、吹き出された油煙３を集塵機４で回収するものである。
特開２００７−１０５５７４号公報 FIG. 7 is a view showing a conventional air blow device for the inner surface of a steel pipe. As shown in this figure, when air blow is performed on the inner surface of the steel pipe 1 to remove the lubricating oil adhering to the inner surface of the steel pipe 1, the air blow device 2 is fixed and the rear end surface of the steel pipe 1 is moved toward the air blow device 2 side. . When air blowing is carried out in such a state, the removed lubricating oil is blown out as oil smoke 3 from the opposite end surface of the steel pipe, and the blown oil smoke 3 is collected by the dust collector 4.
JP 2007-105574 A

しかし、鋼管製造工程で切断された鋼管の長さは一定ではないために、上述したような従来技術である図７に示すような装置であると鋼管の先端部と固定された集塵機４であるとどうしても鋼管の先端部と集塵機４に隙間が生じ、すべての油煙３を回収することが出来ず、工場内に拡散し、作業環境を悪化させ、また作業者にも有害となるという問題点があった。   However, since the length of the steel pipe cut in the steel pipe manufacturing process is not constant, the apparatus shown in FIG. 7 which is the conventional technique as described above is a dust collector 4 fixed to the tip of the steel pipe. However, there is a problem that a gap occurs between the tip of the steel pipe and the dust collector 4, and all the oily smoke 3 cannot be collected, diffuses in the factory, deteriorates the working environment, and is harmful to the worker. there were.

上述したような問題を解消するために発明者らは鋭意開発を進めた結果、エアブローにより吹き出されるミストを漏らすことなく確実に集塵機で回収する方法およびその装置を提供するものである。その発明の要旨とするところは、
（１）鋼管の製造工程において冷間加工や酸洗処理の後に鋼管内面に付着した液体を除去する方法において、該鋼管内面にエアブロー用ノズルを挿入し、該鋼管内面に付着した液体を除去すると共に、該エアブローにより発生するミストを鋼管端面より２００ｍｍ以下に集塵機を配設することを特徴とする除去効率の優れた鋼管内面付着液体の除去方法。
（２）前記（１）に記載のエアブロー用ノズルはエアブロー台車により鋼管の径及び長さに対応し、鋼管端面の中心部に移動可能としたことを特徴とする鋼管内面付着液体の除去方法にある。 In order to solve the above-described problems, the inventors have intensively developed and, as a result, provide a method and an apparatus for reliably collecting the mist blown out by air blow with a dust collector without leaking. The gist of the invention is that
(1) In a method of removing the liquid adhering to the inner surface of the steel pipe after cold working or pickling treatment in the manufacturing process of the steel pipe, an air blow nozzle is inserted into the inner surface of the steel pipe to remove the liquid adhering to the inner surface of the steel pipe. In addition, a method for removing the liquid adhering to the inner surface of the steel pipe with excellent removal efficiency, characterized in that a dust collector is disposed so that the mist generated by the air blow is 200 mm or less from the end face of the steel pipe.
(2) The air blow nozzle described in (1) corresponds to the diameter and length of the steel pipe by an air blow carriage and can be moved to the center of the end face of the steel pipe. is there.

以上述べたように、本発明により鋼管の内面付着液体のエアブローにより発生するミストを完全に集塵機で回収することが出来、その結果、作業環境を改善できる極めて優れた効果を奏するものである。   As described above, according to the present invention, the mist generated by the air blow of the liquid adhering to the inner surface of the steel pipe can be completely recovered by the dust collector, and as a result, an excellent effect of improving the working environment can be achieved.

以下、本発明について図面に従って詳細に説明する
先ず、ここではコールドピルガーを例に説明を行う。図１は、本発明に係るコールドピルガーの全圧延工程図である。この図に示すように、母材５は素管台６に乗せられ、素管挿入部７と送り台８を通りロールスタンド９内で内面潤滑油および外面潤滑油を供給されながらマンドレルにより目標の肉厚に加工された後、抽出トラフ１０に払い出される。払い出された鋼管は切断機前面テーブル１１に払い出され、払い出された鋼管は定寸ストッパー１３に当たると切断機１２で一定の長さに切断される。切断された鋼管は定寸ストッパー１３は水平方向に移動させた後エアブローノズル１５によりエアブローされ、クレードル１４に払い出される。符号１６は基準面を示す。 Hereinafter, the present invention will be described in detail with reference to the drawings. First, a cold pilger will be described as an example. FIG. 1 is a total rolling process diagram of a cold pilger according to the present invention. As shown in this figure, the base material 5 is placed on the raw tube base 6, and passes through the raw tube insertion portion 7 and the feed base 8 and is supplied with the inner surface lubricating oil and the outer surface lubricating oil in the roll stand 9. After being processed to be thick, it is paid out to the extraction trough 10. The discharged steel pipe is discharged to the front table 11 of the cutting machine, and when the discharged steel pipe hits the fixed size stopper 13, it is cut into a fixed length by the cutting machine 12. The cut steel pipe is blown by the air blow nozzle 15 after the sizing stopper 13 is moved in the horizontal direction and delivered to the cradle 14. Reference numeral 16 denotes a reference plane.

図２は、本発明に係る鋼管の切断機以降の工程図である。この図２に示すように、鋼管１は図１の切断機前面テーブル１１から定寸ストッパー１３に当たるまで送られ、定寸ストッパー１３に鋼管が当たると切断機１２で切断される。定寸ストッパー１３は水平方向に移動させることが可能であり鋼管の切断長さを任意の長さに設定することが出来る。   FIG. 2 is a process diagram after the steel pipe cutting machine according to the present invention. As shown in FIG. 2, the steel pipe 1 is fed from the cutting machine front table 11 of FIG. 1 until it hits the sizing stopper 13, and when the steel pipe hits the sizing stopper 13, the steel pipe 1 is cut by the cutting machine 12. The fixed length stopper 13 can be moved in the horizontal direction, and the cutting length of the steel pipe can be set to an arbitrary length.

図３は、鋼管が基準面に当たった状態を示す図である。この図３に示すように、鋼管が切断されると定寸ストッパー１３が上昇し、鋼管１は基準面１６に当たるまでローラー１７、１８で送られる。従来の技術では定寸ストッパー１３で設定した長さに鋼管を切断した後、鋼管は水平方向には移動せず、切断された鋼管の先端面位置を一定にしたままエアブローを行っていた。   FIG. 3 is a diagram showing a state in which the steel pipe hits the reference surface. As shown in FIG. 3, when the steel pipe is cut, the fixed size stopper 13 is raised, and the steel pipe 1 is fed by rollers 17 and 18 until it hits the reference surface 16. In the prior art, after the steel pipe is cut to the length set by the sizing stopper 13, the steel pipe does not move in the horizontal direction, and air blowing is performed with the tip surface position of the cut steel pipe being fixed.

図４は、鋼管が切断された後アエブロー位置に移送した状態を示す図である。この図４に示すように、基準面１６に鋼管１が当たると鋼管１はエアブロー払い出しキッカー１９により集塵機４の前に払い出される。この時、鋼管１の基準面１６と当たった先端面は基準面１６の位置からは水平方向に移動していないので集塵機４と常に一定の距離を保つことになる。   FIG. 4 is a diagram illustrating a state where the steel pipe is transferred to the air blow position after being cut. As shown in FIG. 4, when the steel pipe 1 hits the reference surface 16, the steel pipe 1 is discharged before the dust collector 4 by the air blow-out kicker 19. At this time, the front end surface that has come into contact with the reference surface 16 of the steel pipe 1 does not move in the horizontal direction from the position of the reference surface 16, so that a constant distance from the dust collector 4 is always maintained.

図５は、本発明に係るエアブローしている状態を示す断面図である。この図５に示すように、エアブロー台車２０が水平方向に移動し、エアブローノズル１５が鋼管１の後端面から挿入され、エアブローが実施される。エアブローが実施されている間に鋼管先端部から発生した油煙３は集塵機４ですべて回収される。エアブローが実施された後、エアブロー台車２０が後退し、エアブローノズル１５が鋼管後端面から抜き出され、クレードル払い出しキッカー２１によりクレードル１４に払い出される。   FIG. 5 is a cross-sectional view showing an air blowing state according to the present invention. As shown in FIG. 5, the air blow carriage 20 moves in the horizontal direction, the air blow nozzle 15 is inserted from the rear end surface of the steel pipe 1, and air blow is performed. All the oil smoke 3 generated from the tip of the steel pipe while the air blow is being performed is collected by the dust collector 4. After the air blow is performed, the air blow carriage 20 moves backward, the air blow nozzle 15 is extracted from the rear end surface of the steel pipe, and is discharged to the cradle 14 by the cradle discharge kicker 21.

図６は、本発明に係るエアブロー台車の詳細図である。この図に示すように鋼管１はストッパー２２で常に同じ位置に存在するが、鋼管の径の変化すると、鋼管の中心位置も変化する為、エアブローノズル１５は左右方向への調整は左右調整バルブ２３で、また、上下方向への調整は上下調整バルブ２４で調整できる構造になっている。また、鋼管の長さが変化した場合の水平方向の移動は、モーター２５と連結した車輪２６がエアブロー台車用レール２７を移動することで可能となっている。以上の方法は他の冷間加工や酸洗処理の後の鋼管内面に付着した液体の除去にも使用が可能である。   FIG. 6 is a detailed view of an air blow carriage according to the present invention. As shown in this figure, the steel pipe 1 is always present at the same position by the stopper 22, but when the diameter of the steel pipe changes, the center position of the steel pipe also changes. In addition, the vertical adjustment can be adjusted by the vertical adjustment valve 24. Further, the movement in the horizontal direction when the length of the steel pipe is changed is made possible by the wheels 26 connected to the motor 25 moving the rails 27 for the air blow carriage. The above method can also be used to remove liquid adhering to the inner surface of the steel pipe after other cold working or pickling treatments.

以上述べたように、鋼管の製造工程において冷間加工や酸洗処理の後に鋼管内面に付着した液体を除去する方法において、エアブローにより発生するミストを鋼管端面より２００ｍｍ以下にした理由は、２００ｍｍを超えると極端に油煙の回収状況が悪くなることから、２００ｍｍとした。好もしくは１００ｍｍとする。   As described above, in the method of removing the liquid adhering to the inner surface of the steel pipe after cold working or pickling treatment in the manufacturing process of the steel pipe, the reason why the mist generated by the air blow is 200 mm or less from the end face of the steel pipe is 200 mm. If it exceeds the limit, the situation of collecting oil smoke would be extremely bad, so it was set to 200 mm. Good or 100 mm.

以下、本発明について実施例によって具体的に説明する。
表１は、本発明例及び比較例である内面潤滑油の除去方法で鋼管の長さ、鋼管の内径、エアブローの実施時間を変化させたときの集塵機と鋼管端面の距離および油煙の回収状況の結果である。油煙の集塵機への回収状況については油煙が漏れていないか目視で確認し◎：すべて回収、○：ほぼ回収、△：やや不完全、×：回収効果なし、で評価した。 Hereinafter, the present invention will be specifically described with reference to examples.
Table 1 shows the distance between the dust collector and the end face of the steel pipe when the length of the steel pipe, the inner diameter of the steel pipe, and the air blow time are changed by the method of removing the internal lubricating oil according to the present invention and the comparative example, and the recovery state of the oil smoke It is a result. The state of recovery of the oil smoke to the dust collector was visually checked to see if the oil smoke leaked. ◎: All recovered, ○: Almost recovered, Δ: Slightly incomplete, ×: No recovery effect.

Figure 2009119489
表１に示すように、Ｎｏ．１〜１０は本発明例であり、Ｎｏ．１１〜１５は比較例である。
Figure 2009119489
 As shown in Table 1, no. 1 to 10 are examples of the present invention. 11 to 15 are comparative examples.

表１に示す従来例は、図４に示す方法により油煙を回収した比較例である。比較例Ｎｏ．１１〜１３は集塵機と鋼管端面の距離が１０００ｍｍ以上と離れているために油煙の回収が殆どされていない。また、比較例Ｎｏ．１４〜１５は集塵機と鋼管端面の距離が２００ｍｍ以上離れているために油煙の回収がやや不完全である。さらに、本発明例のＮｏ．７は、鋼管の長さ６３００ｍｍ、鋼管の内径３４ｍｍ、エアブローの実施時間３０秒の場合と比較例のＮｏ．１５での、鋼管の長さ６３００ｍｍ、鋼管の内径３４ｍｍ、エアブローの実施時間３０秒の場合を比較すると、鋼管の長さと内径は同じであるが、集塵機と鋼管端面の距離の違いにより油煙の回収状況に差が生じていることが分かる。これに対し、本発明例Ｎｏ．１〜１０のいずれも本発明の条件を満足していることから油煙の回収の良好なことが分かる。   The conventional example shown in Table 1 is a comparative example in which oil smoke is collected by the method shown in FIG. Comparative Example No. In Nos. 11 to 13, since the distance between the dust collector and the end surface of the steel pipe is as long as 1000 mm or more, oil and smoke are hardly collected. Comparative Example No. In Nos. 14 to 15, since the distance between the dust collector and the end surface of the steel pipe is 200 mm or more, the collection of oily smoke is somewhat incomplete. Furthermore, No. of this invention example. No. 7 shows a case where the length of the steel pipe is 6300 mm, the inner diameter of the steel pipe is 34 mm, and the air blowing time is 30 seconds and the comparative example No. 15, the length of the steel pipe is 6300 mm, the inner diameter of the steel pipe is 34 mm, and the air blow is performed for 30 seconds. The length and the inner diameter of the steel pipe are the same. It can be seen that there is a difference in the situation. On the other hand, the present invention example No. Since all of 1 to 10 satisfy the conditions of the present invention, it can be seen that oil smoke is well recovered.

本発明に係るコールドピルガーの全圧延工程を表す図である。It is a figure showing the whole rolling process of the cold pilger which concerns on this invention. 本発明に係る鋼管の切断以降の工程を表す図である。It is a figure showing the process after the cutting of the steel pipe concerning the present invention. 鋼管が基準面に当たった状態を示す図である。It is a figure which shows the state which the steel pipe contacted the reference plane. 鋼管が切断された後アエブロー位置に移送した状態を示す図である。It is a figure which shows the state which transferred to the air blow position after the steel pipe was cut | disconnected. 本発明に係るエアブローしている状態を示す断面図である。It is sectional drawing which shows the state which is blowing air which concerns on this invention. 本発明に係るエアブロー台車の詳細を表す図である。It is a figure showing the detail of the air blow trolley | bogie which concerns on this invention. 従来の鋼管内面のエアブロー装置を示す図である。It is a figure which shows the conventional air blow apparatus of the steel pipe inner surface.

符号の説明Explanation of symbols

１ 鋼管
２ エアブロー装置
３ 油煙
４ 集塵機
５ 母材
６ 素管台
７ 素管挿入部
８ 送り台
９ ロールスタンド
１０ 抽出トラフ
１１ 切断機前面テーブル
１２ 切断機
１３ 定寸ストッパー
１４ クレードル
１５ エアブローノズル
１６ 基準面
１７、１８ ローラー
１９ エアブロー払い出しキッカー
２０ エアブロー台車
２１ クレードル払い出しキッカー
２２ ストッパー
２３ 左右調整バルブ
２４ 上下調整バルブ
２５ モーター
２６ 車輪
２７ レール


特許出願人 山陽特殊製鋼株式会社
代理人 弁理士 椎 名 彊 DESCRIPTION OF SYMBOLS 1 Steel pipe 2 Air blow apparatus 3 Oil smoke 4 Dust collector 5 Base material 6 Element pipe stand 7 Element pipe insertion part 8 Feed stand 9 Roll stand 10 Extraction trough 11 Cutting machine front table 12 Cutting machine 13 Fixed size stopper 14 Cradle 15 Air blow nozzle 16 Reference plane 17, 18 Roller 19 Air blow dispensing kicker 20 Air blow carriage 21 Cradle dispensing kicker 22 Stopper 23 Left / right adjustment valve 24 Vertical adjustment valve 25 Motor 26 Wheel 27 Rail


Patent Applicant Sanyo Special Steel Co., Ltd.
Attorney: Attorney Shiina

Claims (2)

鋼管の製造工程において冷間加工や酸洗処理の後に鋼管内面に付着した液体を除去する方法において、該鋼管内面にエアブロー用ノズルを挿入し、該鋼管内面に付着した液体を除去すると共に、該エアブローにより発生するミストを鋼管端面より２００ｍｍ以下に集塵機を配設することを特徴とする除去効率の優れた鋼管内面付着液体の除去方法。 In the method of removing the liquid adhering to the inner surface of the steel pipe after cold working or pickling treatment in the manufacturing process of the steel pipe, an air blow nozzle is inserted into the inner surface of the steel pipe to remove the liquid adhering to the inner surface of the steel pipe, and A method for removing a liquid adhering to the inner surface of a steel pipe with excellent removal efficiency, wherein a dust collector is disposed so that mist generated by air blow is 200 mm or less from an end face of the steel pipe. 請求項１に記載のエアブロー用ノズルはエアブロー台車により鋼管の径及び長さに対応し、鋼管端面の中心部に移動可能としたことを特徴とする鋼管内面付着液体の除去方法。 The air blow nozzle according to claim 1, wherein the air blow nozzle corresponds to the diameter and length of the steel pipe by an air blow carriage and is movable to the center of the end face of the steel pipe.
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KR20150131380A (en) * 2013-03-18 2015-11-24 산드빅 마테리알스 테크놀로지 도이칠란트 게엠베하 Method for producing a steel tube including cleaning of the inner tube wall

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KR20150131380A (en) * 2013-03-18 2015-11-24 산드빅 마테리알스 테크놀로지 도이칠란트 게엠베하 Method for producing a steel tube including cleaning of the inner tube wall
JP2016512794A (en) * 2013-03-18 2016-05-09 サンドヴィック マテリアルズ テクノロジー ドイチュラント ゲーエムベーハー Method for manufacturing a steel pipe including cleaning of the inner wall of the pipe
KR102210790B1 (en) * 2013-03-18 2021-02-01 산드빅 마테리알스 테크놀로지 도이칠란트 게엠베하 Method for producing a steel tube including cleaning of the inner tube wall
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CN104475464B (en) * 2014-11-10 2016-03-09 重庆钢铁(集团)有限责任公司 A kind of stainless steel tube fluid cleaning equipment

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