JPH04275875A - Surface layer treatment device for surface treated steel sheet and manufacturing equipment of electro-resistance-welded steel pipe - Google Patents
Surface layer treatment device for surface treated steel sheet and manufacturing equipment of electro-resistance-welded steel pipeInfo
- Publication number
- JPH04275875A JPH04275875A JP2416638A JP41663890A JPH04275875A JP H04275875 A JPH04275875 A JP H04275875A JP 2416638 A JP2416638 A JP 2416638A JP 41663890 A JP41663890 A JP 41663890A JP H04275875 A JPH04275875 A JP H04275875A
- Authority
- JP
- Japan
- Prior art keywords
- grid
- steel plate
- pipe
- steel sheet
- treated steel
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000002344 surface layer Substances 0.000 title claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 24
- 238000007747 plating Methods 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 10
- 238000004381 surface treatment Methods 0.000 claims description 7
- 239000011324 bead Substances 0.000 abstract description 17
- 238000003466 welding Methods 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract 2
- 239000002245 particle Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007921 spray Substances 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
- 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
Description
【０００１】0001
【産業上の利用分野】本発明は、表面処理鋼板（帯）を
加工する際に、不要或いは有害となる表層部を処理する
装置に関し、特に電縫鋼管製造における溶接部となる鋼
板幅方向両端部を処理し、溶接ビードを効率よく切削で
きるようにするための表面処理鋼板の処理装置及び電縫
鋼管製造設備ラインに係るものである。[Industrial Application Field] The present invention relates to a device for treating unnecessary or harmful surface layer parts when processing a surface-treated steel plate (strip), and in particular, the present invention relates to a device for treating unnecessary or harmful surface layer parts when processing a surface-treated steel plate (strip), and in particular, the present invention relates to a device for processing unnecessary or harmful surface layer parts when processing a surface-treated steel plate (strip), and in particular, the present invention relates to a device for treating unnecessary or harmful surface layer parts when processing a surface-treated steel plate (strip). The present invention relates to a surface-treated steel plate processing device and an electric resistance welded steel pipe manufacturing equipment line for processing the weld beads and efficiently cutting the weld beads.
【０００２】0002
【従来の技術】メッキを施した表面処理鋼板は広範な用
途があり、例えば自動車排ガス系などの腐食環境に使用
される比較的肉厚及び径の大きくない鋼管は、電縫溶接
法（バットシーム溶接）で製造されている。[Prior Art] Surface-treated plated steel sheets have a wide range of uses.For example, steel pipes with relatively small wall thickness and diameter used in corrosive environments such as automobile exhaust gas systems are manufactured using electric resistance welding (butt seam welding). ) is manufactured by.
【０００３】一般に、電縫鋼管の製造設備ラインは図４
に例示すように、アンコイラー１０１でコイルより巻き
戻した鋼板（帯）１を、シャー／ウエルダー１０２で前
の鋼板１と接続し、レベラー１０３で鋼板１を矯正して
からエッジスカファー１０４でその端面の切削を行った
後、造管ミル１０５でオープンパイプに造管し、次いで
このパイプ端縁を溶接装置１０６でシーム溶接して鋼管
とする。その際、該鋼管に形成された溶接ビードにバリ
等が発生するため、造管後そのビード内外面をバイト１
０７切削して整形する。更にサイジングミル１０８で管
径を絞った後、プレスカッター１０９で管長を所定の長
さに切断して出荷する。図中１１０は鋼板を滞留するル
ーパー、１１１は鋼管を矯正するために必要に応じて設
けるレベラーである。Generally, the manufacturing equipment line for electric resistance welded steel pipes is shown in Fig. 4.
As illustrated in , a steel plate (band) 1 uncoiled from a coil by an uncoiler 101 is connected to the previous steel plate 1 by a shear/welder 102, and after straightening the steel plate 1 by a leveler 103, it is straightened by an edge scuffer 104. After cutting the end face, a pipe mill 105 is used to form an open pipe, and the end edge of this pipe is then seam-welded using a welding device 106 to form a steel pipe. At that time, burrs etc. are generated on the weld bead formed on the steel pipe, so after the pipe is formed, the inner and outer surfaces of the bead are
07 Cut and shape. Furthermore, after reducing the tube diameter with a sizing mill 108, the tube is cut to a predetermined length with a press cutter 109 and shipped. In the figure, 110 is a looper for retaining the steel plate, and 111 is a leveler provided as necessary to straighten the steel pipe.
【０００４】この電縫鋼管が、強い腐食環境での用途に
供される場合には、前記したようにメッキなどで表面処
理された鋼板で製造されるが、このような表面処理鋼板
を用いることには、製造上大きな問題が生じる。[0004] When this electric resistance welded steel pipe is to be used in a strongly corrosive environment, it is manufactured from a steel plate that has been surface-treated by plating as described above, but it is not possible to use such a surface-treated steel plate. This poses a major manufacturing problem.
【０００５】即ち、前記工程で、造管後の溶接ビードに
はメッキ金属が溶融付着しており、該ビードをバイトで
切削加工する場合に、バイト刃先にメッキ金属が溶着し
、次第に溶着量が増大して構成刃先（すくい角）を変化
させ、切削能力を著しく低下させてしまう。このことが
鋼管品質を劣化する原因となり、その品質を維持するた
めには、頻繁にラインを停止してバイトの交換を行わな
ければならず、その結果生産性が低下し、製造コストの
増大をもたらす。That is, in the above process, plated metal is melted and adhered to the weld bead after pipe making, and when the bead is cut with a cutting tool, the plated metal is welded to the cutting edge of the cutting tool, and the amount of welding gradually decreases. This increases and changes the built-up cutting edge (rake angle), significantly reducing cutting ability. This causes deterioration of the quality of the steel pipe, and in order to maintain the quality, the line must be stopped frequently to replace the bits, resulting in a decrease in productivity and an increase in manufacturing costs. bring.
【０００６】バイトを使用せず、グラインダーによる研
削加工もあるが、表面の砥粒間にメッキ金属による目詰
りが著しく、バイトと同様な頻繁な交換を行うか、目詰
りを除去するオンラインドレッシングなどの特別な手段
が必要となる。[0006] There is also a grinding process using a grinder without using a cutting tool, but the abrasive grains on the surface are significantly clogged with plated metal, so frequent replacement like the cutting tool is required, or online dressing to remove the clogging is required. special measures are required.
【０００７】一方、Ｚｎメッキ鋼板のメッキ層を除去す
る方法として、特開昭６３−９６２２４号公報にはショ
ットブラスト処理することを提案している。しかし、こ
の方法はＺｎメッキ鋼板のスクラップの処理を発明の対
象にしており、しかもこれを７００〜９００℃と言う高
温に加熱した後にショットブラスト処理している。従っ
て、この方法では、特定部位や高品質の製品に対する処
理に採用することは難しい。On the other hand, as a method for removing the plating layer of a Zn-plated steel sheet, Japanese Patent Laid-Open No. 63-96224 proposes shot blasting. However, this method deals with the processing of scraps of Zn-plated steel sheets, which are heated to a high temperature of 700 to 900° C. and then shot blasted. Therefore, it is difficult to employ this method for processing specific parts or high-quality products.
【０００８】[0008]
【発明が解決しようとする課題】本発明はメッキ等の表
面処理鋼板における特定部分のメッキ層を走行中に連続
的に除去すること、特に、電縫鋼管の製造過程で、溶接
前に表面処理鋼板両端部の表面層を或る幅に亘って除去
することによって、溶接後のビード切削をするバイトの
長寿命化をはかると共に高品質の鋼管を得るための表面
処理鋼板の処理装置を提供することを目的とする。[Problems to be Solved by the Invention] The present invention aims to continuously remove the plating layer of a specific portion of a surface-treated steel plate during running, and in particular, to perform surface treatment before welding in the manufacturing process of electric resistance welded steel pipes. To provide a processing device for surface-treated steel sheets, which extends the life of a cutting tool for bead cutting after welding by removing the surface layer at both ends of the steel sheet over a certain width, and obtains high-quality steel pipes. The purpose is to
【０００９】[0009]
【課題を解決するための手段】本発明は上記目的を達成
するために以下の構成を要旨とする。すなわち（１）エ
アシール機構を有する鋼板通過口を側壁に設けたブラス
トチャンバーと、該ブラストチャンバーの上下部に対向
して設け、一端をグリッド分離回収装置に連結したグリ
ッド供給管と連通した複数個のブラストノズルと、前記
ブラストチャンバーに開口した吸引配管を連結したグリ
ッド回収装置とからなる表層除去装置を、各ブラストチ
ャンバーを連結して設けた幅調整装置で設定位置を調整
可能に、且つ鋼板通過口を対向せしめて対設し、前記グ
リッド回収槽と前記グリッド分離回収装置とを送給管で
連結したことを特徴とする表面処理鋼板の表層処理装置
であり、
（２）前項の各々のブラストノズルには、別に設けた加
圧空気送給管を連結してもよく、また、（３）第１項ま
たは前項記載の表層除去装置の後には、切削或いは研削
加工装置を併設することにより、一層表層除去を確実に
でき、さらに、
（４）メッキ層を有する表面処理鋼板を連続的に走行す
る電縫鋼管製造ラインにおいて、造管装置より前の位置
に、鋼板幅方向両端部にグリッドを投射して一定幅のメ
ッキ層を除去する前各項記載の表層処理装置を設けた電
縫鋼管製造のライン配置とするものである。[Means for Solving the Problems] In order to achieve the above object, the present invention has the following configuration. In other words, (1) a blast chamber having a steel plate passage port with an air seal mechanism on the side wall; and a plurality of grid supply pipes provided oppositely at the top and bottom of the blast chamber and communicating with a grid supply pipe connected to a grid separation and recovery device at one end. A surface layer removal device consisting of a blast nozzle and a grid recovery device connected to a suction pipe opened to the blast chamber can be adjusted in setting position with a width adjustment device provided by connecting each blast chamber, and a steel plate passage opening. A surface treatment device for a surface-treated steel sheet, characterized in that the grid recovery tank and the grid separation and recovery device are arranged facing each other, and the grid recovery tank and the grid separation and recovery device are connected by a feed pipe, (2) each of the blast nozzles described in the preceding item (3) A cutting or grinding device may be installed after the surface layer removing device described in item 1 or the previous item to further improve the performance. (4) In an ERW steel pipe manufacturing line that continuously runs surface-treated steel sheets with a plating layer, grids are projected on both ends of the steel sheet in the width direction at a position before the pipe making equipment. This is a line arrangement for manufacturing electric resistance welded steel pipes, which is equipped with the surface treatment device described in each of the preceding sections, which removes a certain width of the plating layer.
【００１０】0010
【作用】以下に本発明を詳細に説明する。電縫鋼管の製
造過程において、加圧接合されて形成される溶接部ビー
ドにはバリが発生するため、溶接部後段に設けたバイト
でこれを除去しビード形状を整形している。Ｚｎメッキ
やＡｌメッキ等の表面処理鋼板で電縫鋼管を製造した場
合には、溶接ビード部にメッキ金属が溶融して付着する
。一般にメッキ金属は柔らかく、付着したメッキ金属は
ビード切削の際バイト刃先に溶着して切削能力を低下さ
せることは前述した通りである。[Operation] The present invention will be explained in detail below. During the manufacturing process of electric resistance welded steel pipes, burrs are generated in the weld bead formed by pressure welding, so this is removed using a cutting tool installed after the weld and the bead shape is shaped. When an electric resistance welded steel pipe is manufactured using a surface-treated steel plate such as Zn plating or Al plating, the plating metal melts and adheres to the weld bead. As mentioned above, plated metal is generally soft, and the attached plated metal welds to the cutting edge of the cutting tool during bead cutting, reducing the cutting ability.
【００１１】本発明においては、前記表面処理鋼板を走
行中に、電縫鋼管製造工程では造管装置以前の位置にお
いて、溶接部となる鋼板の幅方向両端部にグリッド（研
削粒子）を投射して、所定幅のメッキ層を除去しておき
、溶接ビードにメッキ金属が付着しないようにする。[0011] In the present invention, while traveling on the surface-treated steel plate, grids (grinding particles) are projected onto both ends in the width direction of the steel plate that will become the welding part at a position before the pipe making device in the ERW steel pipe manufacturing process. A predetermined width of the plating layer is removed to prevent the plating metal from adhering to the weld bead.
【００１２】図１は、本発明の鋼板メッキ層を除去する
装置の１例を示す斜視図であり、図２は図１のＡ−Ａ線
断面図である。図において１はブラストチャンバーであ
り、その側壁２に鋼板Ｓを通すスリット状通過口３を設
け、該通過口３を構成する側壁２端には、外気を遮断す
ると共に鋼板を側壁端間に一定の間隙を保持するエアシ
ール機構４が対向して設置されている。該エアシール機
構４では、図示していない加圧ポンプで圧縮された加圧
空気を導管５よりエアノズル６に供給し噴射する。７は
側壁２の内側上下に配置固定したカバーであり、必要に
応じて設けるものであり、上下のカバー７，７間には鋼
板Ｓを通す小間隙８を形成し、前記エアノズル６からの
噴出空気が鋼板Ｓをほふくして研削部に侵入するのを防
止すると共に噴射グリッドを散乱せずに鋼板Ｓ端部の所
定位置への衝突を維持する役割を果たす。FIG. 1 is a perspective view showing an example of an apparatus for removing a steel plate plating layer according to the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. In the figure, reference numeral 1 denotes a blast chamber, and its side wall 2 is provided with a slit-like passage port 3 through which a steel plate S passes. An air seal mechanism 4 that maintains the gap is installed facing each other. In the air seal mechanism 4, pressurized air compressed by a pressure pump (not shown) is supplied to an air nozzle 6 through a conduit 5 and is injected. Reference numeral 7 denotes covers arranged and fixed on the upper and lower sides of the inside of the side wall 2, which are provided as necessary. A small gap 8 is formed between the upper and lower covers 7, through which the steel plate S is passed, and the air jet from the air nozzle 6 is It serves to prevent air from blowing up the steel plate S and entering the grinding section, and to maintain the impact of the end of the steel plate S at a predetermined position without scattering the spray grid.
【００１３】９はグリッド（研削粒子）１０を鋼板Ｓ幅
方向の上下端面に噴射するブラストノズルであり、ブラ
ストチャンバー１の上壁及び下壁１１，１１に噴射口を
対向し、且つ鋼板通過口３に沿って夫々複数個並列設置
する。設置方法はこれに限定するものでなく、例えばチ
ャンバー１内に適当な支持手段を設けて固定しても良い
。この夫々のブラストノズル９には、グリッド分離回収
装置１２より供給するグリッドを搬送するグリッド供給
管１３を分岐連結すると共に、別に設置した加圧空気供
給管１４（該圧縮空気供給源は図示を省略）より分岐し
た噴出口１５を設置している。グリッド分離回収装置１
２からのグリッド供給は、空気又は水等の搬送媒体を用
いて行い、加圧媒体によって行う場合には、前記加圧空
気供給管１４を省略しても良い。またノズル９は、グリ
ッド供給管１３を内蔵した支持材１６に支承してもよい
。Reference numeral 9 denotes a blast nozzle that injects a grid (grinding particles) 10 onto the upper and lower end faces of the steel plate S in the width direction, and has injection ports facing the upper and lower walls 11, 11 of the blast chamber 1, and a steel plate passage port. A plurality of each are installed in parallel along line 3. The installation method is not limited to this, and for example, suitable support means may be provided in the chamber 1 and fixed. A grid supply pipe 13 for conveying the grid supplied from the grid separation and recovery device 12 is branched and connected to each blast nozzle 9, and a separately installed pressurized air supply pipe 14 (the compressed air supply source is not shown) is connected to each blast nozzle 9. ) is installed with a spout 15 branching out from the outlet. Grid separation and collection device 1
Grid supply from 2 is carried out using a carrier medium such as air or water, and when carried out using a pressurized medium, the pressurized air supply pipe 14 may be omitted. Further, the nozzle 9 may be supported on a support member 16 having a built-in grid supply pipe 13.
【００１４】ブラストチャンバー１は、鋼板通過口３を
対向させた一対を、幅調整装置１７で連結して設定し、
一対のブラストチャンバーが走行する通板材の幅寸法に
応じて幅間隔を調整できるよう該幅調整装置１７により
移動可能となっている。The blast chamber 1 is configured by connecting a pair of steel plate passage ports 3 facing each other with a width adjusting device 17.
The pair of blast chambers are movable by the width adjusting device 17 so that the width interval can be adjusted according to the width of the running material.
【００１５】１８はチャンバー１に開口する吸引配管１
９と連結し、チャンバー内に噴射されたグリッドを吸引
収集するグリッド回収装置であって、ここで回収された
グリッドは輸送管２０を通してグリッド分離回収装置１
２に空気や水等の媒体により搬送される。Reference numeral 18 denotes a suction pipe 1 that opens into the chamber 1.
9, the grid collection device sucks and collects the grid injected into the chamber, and the grid collected here is passed through the transport pipe 20 to the grid separation and collection device 1.
2, it is transported by a medium such as air or water.
【００１６】上記ブラストチャンバー１、ブラストノズ
ル９及びグリッド回収装置１８は、本発明の表層除去装
置を構成し、処理すべき表面処理鋼板の両幅方向に対向
して少なくとも一対が鋼板幅に応じた間隔調整が可能に
設置される。尚、グリッド回収装置１８は、一対のブラ
ストチャンバー１，１に一個で共用してもよい。The blast chamber 1, the blast nozzle 9, and the grid recovery device 18 constitute the surface layer removal device of the present invention, and at least one pair of the blast chamber 1, the blast nozzle 9, and the grid recovery device 18 are arranged opposite to each other in the width direction of the surface-treated steel sheet to be treated. The spacing can be adjusted. Note that one grid recovery device 18 may be shared by the pair of blast chambers 1, 1.
【００１７】グリッド分離回収装置１２では鋼板表層を
研削した後のグリッドを、その中には再使用不適な粉砕
した微粒子（ダスト）等を混合しているため、これらを
分離除去して適性粒子を回収し、再度ブラストノズル９
に循環供給する。グリッド量が研削に不足する場合には
系外から補給することは勿論である。In the grid separation and recovery device 12, the grid after grinding the surface layer of the steel plate contains crushed fine particles (dust) etc. that are not suitable for reuse, so these are separated and removed to obtain suitable particles. Collect and use blast nozzle 9 again
Circulating supply to. Of course, if the amount of grid is insufficient for grinding, it can be replenished from outside the system.
【００１８】上記本発明装置を電縫鋼管製造ラインに適
用した一例を図３の部分概略図に示す。すなわち、図４
に示すライン配置において表面処理鋼板Ｓの幅端部の表
層部を除去するブラストチャンバー１，１及び関連設備
（図示を省略）を対向せしめて、造管ミル１０５の直前
に設けたもので、これによって処理された鋼板Ｓは両端
の一定幅の表層（メッキ層）が除去２０されて造管ミル
１０５に導かれ、更に板端を突き合わせてシーム溶接１
０６されることを示している。An example in which the above-described apparatus of the present invention is applied to an electric resistance welded steel pipe production line is shown in a partial schematic diagram of FIG. That is, Figure 4
In the line arrangement shown in Figure 1, the blast chambers 1, 1 and related equipment (not shown) for removing the surface layer at the width end of the surface-treated steel sheet S are placed opposite each other, and are installed immediately before the tube mill 105. The treated steel plate S has a surface layer (plated layer) of a certain width on both ends removed 20, is guided to a tube mill 105, and then the ends are brought together and seam welded 1.
06.
【００１９】上述した装置に於いて、処理される表面処
理鋼板Ｓはその両端部をブラストチャンバー１の通過口
に挿入走行し、この際、向き合ったブラストチャンバー
１，１は鋼板幅に応じて位置調整され、鋼板幅端の所定
寸法がチャンバー１内に設けられたカバー７より外側に
在るように配置される。ブラストノズル９は上下に対向
してチャンバー１に固定しているが、上下或いは左右可
動に設けることは一向にの支障ない。ノズル９より噴射
され、鋼板幅両端部を一定幅（片幅１０ｍｍ以下が好ま
しい。）に亘って吹き付けてこの部分のメッキ層を研削
除去するグリッドは、かなり高速でノズルを通過するた
めノズル先端はかなりの磨耗を起こす。そのため少なく
ともノズル先端は、アルミナ，ＳｉＣ，サイアロン等の
耐磨耗製材料とするのがよい。In the above-mentioned apparatus, both ends of the surface-treated steel sheet S to be treated are inserted into the passage opening of the blast chamber 1, and at this time, the opposing blast chambers 1 are positioned in accordance with the width of the steel sheet. The width end of the steel plate is adjusted so that a predetermined dimension of the width end of the steel plate is located outside the cover 7 provided in the chamber 1 . Although the blast nozzles 9 are fixed to the chamber 1 so as to face each other vertically, there is no problem in providing them so as to be movable vertically or horizontally. The grid that is sprayed from the nozzle 9 over a certain width (preferably one width of 10 mm or less) at both ends of the steel plate to remove the plating layer in this area passes through the nozzle at a fairly high speed, so the nozzle tip is Causes considerable wear and tear. Therefore, at least the tip of the nozzle is preferably made of a wear-resistant material such as alumina, SiC, or sialon.
【００２０】研削に供するグリッド（粒子）は、限定す
るものでないがＳｉＣ，アルミナ，ガラスビーズ等の材
料からなることが好ましい。またその粒径は設備及び操
業に大いに影響を及ぼす。グリッド粒径が大きくなるに
したがって研削量は増大するもののノズル寿命が低下す
ることから２ｍｍ以下のグリッド粒径とすることが好ま
しい。研削量は設備コストの面から大きい方がよく、一
方ライン操業面から少なくとも１ｍｇ／ｃｍ２ 秒とす
る必要があり、そのために２０μｍ 以上の粒径とすれ
ばよい。The grid (particles) used for grinding is preferably made of materials such as, but not limited to, SiC, alumina, and glass beads. In addition, the particle size greatly affects equipment and operation. Although the grinding amount increases as the grid particle size increases, the nozzle life decreases, so it is preferable to set the grid particle size to 2 mm or less. The amount of grinding should be larger from the viewpoint of equipment cost, and on the other hand, from the viewpoint of line operation, it is necessary to set it to at least 1 mg/cm2 seconds, and for this purpose, the particle size may be set to 20 μm or more.
【００２１】本発明は、上記のように研削粒子の投射に
より鋼板表面のメッキ金属を除去することができるが、
さらに設備をコンパクト化し、若しくはより作業スピー
ドを向上するために、前記投射加工に加えてバイトによ
る切削かグラインダーナ等による研削加工を組み合わせ
て実施しても良い。これらの併用加工においてはメッキ
金属は研削粒子の投射で大部分が除去されているため、
工具寿命を低下することがない。[0021] The present invention can remove plated metal on the surface of a steel plate by projecting abrasive particles as described above.
Furthermore, in order to make the equipment more compact or to further improve the working speed, cutting with a cutting tool or grinding with a grinder or the like may be performed in combination in addition to the projection processing. In these combined processes, most of the plated metal is removed by the projection of grinding particles, so
No reduction in tool life.
【００２２】[0022]
【発明の効果】以上のように、本発明は表面処理鋼板を
鋼管に製造するに当たり、特に電縫鋼管製造ラインでは
、造管前で溶接部分となる鋼板幅端のメッキ層を除去す
ることによって、溶接後のビードを整形するバイトの寿
命を著しく延長することが可能となり、その結果、生産
性を著しく向上することが可能となり、且つビード形状
の優れた高品質の鋼管を高い生産性のもとに製造するこ
とができる。[Effects of the Invention] As described above, the present invention can be used to manufacture steel pipes from surface-treated steel sheets, especially in the ERW steel pipe manufacturing line, by removing the plating layer at the width end of the steel sheet, which will be the welded part, before pipe manufacturing. It has become possible to significantly extend the life of the cutting tool used to shape the bead after welding, and as a result, it has become possible to significantly improve productivity. and can be manufactured.
【図１】本発明の鋼板メッキ層を除去する装置の一例を
示す。FIG. 1 shows an example of an apparatus for removing a steel plate plating layer according to the present invention.
【図２】図１におけるＡ−Ａ線断面図を示す。FIG. 2 shows a cross-sectional view taken along line AA in FIG. 1.
【図３】電縫鋼管製造ラインにおける本発明の構成を示
す部分図である。FIG. 3 is a partial view showing the configuration of the present invention in an ERW steel pipe manufacturing line.
【図４】通常の電縫鋼管製造ラインの一例を示す。FIG. 4 shows an example of a normal electric resistance welded steel pipe manufacturing line.
１：ブラストチャンバー ２：側壁 ３：鋼板通過口 ４：エアシール機構 ５：導管 ６：エアノズル ７：カバー ８：小間隙 ９：ブラストノズル １０：グリッド １１：上、下壁 １２：グリッド分離回収装置： １３：グリッド供給管 １４：加圧空気供給管 １５：噴出口 １６：支持材 １７：幅調整装置 １８：グリッド回収装置 １９：吸引配管 ２０：輸送管 ２１：メッキ除去部 1: Blast chamber 2: Side wall 3: Steel plate passage port 4: Air seal mechanism 5: Conduit 6: Air nozzle 7: Cover 8: Small gap 9: Blast nozzle 10: Grid 11: Upper and lower walls 12: Grid separation and recovery device: 13: Grid supply pipe 14: Pressurized air supply pipe 15: Spout 16: Support material 17: Width adjustment device 18: Grid collection device 19: Suction piping 20: Transport pipe 21: Plating removal part
Claims (4)
側壁に設けたブラストチャンバーと、該ブラストチャン
バーの上下部に対向して設け、一端をグリッド分離回収
装置に連結したグリッド供給管と連通した複数個のブラ
ストノズルと、前記ブラストチャンバーに開口した吸引
配管を連結したグリッド回収装置とからなる表層除去装
置を、各ブラストチャンバーを連結して設けた幅調整装
置で設定位置を調整可能に、且つ鋼板通過口を対向せし
めて対設し、前記グリッド回収槽と前記グリッド分離回
収装置とを送給管で連結したことを特徴とする表面処理
鋼板の表層処理装置。1. A blast chamber having a steel plate passage port with an air seal mechanism in a side wall, and a plurality of grid supply pipes provided oppositely at the top and bottom of the blast chamber and communicating with a grid supply pipe connected to a grid separation and recovery device at one end. A surface layer removal device consisting of a blast nozzle and a grid recovery device connected to a suction pipe opened to the blast chamber can be adjusted in setting position with a width adjustment device provided by connecting each blast chamber, and the steel plate can be passed through. A surface treatment device for a surface-treated steel sheet, characterized in that the grid recovery tank and the grid separation and recovery device are connected by a feed pipe, with openings facing each other.
圧空気送給管を連結したことを特徴とする請求項１記載
の表面処理鋼板の表層処理装置。2. The surface treatment apparatus for a surface-treated steel sheet according to claim 1, wherein each blast nozzle is connected to a separately provided pressurized air supply pipe.
工装置を併設したことを特徴とする請求項１記載の表面
処理鋼板の表層処理装置。3. The surface treatment apparatus for a surface-treated steel sheet according to claim 1, further comprising a cutting or grinding device installed after the surface layer removing device.
的に走行する電縫鋼管製造ラインにおいて、造管装置よ
り前の位置に、鋼板幅方向両端部にグリッドを投射して
一定幅のメッキ層を除去する請求項１或いは２記載の表
層処理装置を設けたことを特徴とする電縫鋼管製造設備
。[Claim 4] In an electric resistance welded steel pipe manufacturing line that continuously runs a surface-treated steel plate having a plating layer, a grid is projected on both ends of the steel plate in the width direction at a position before the pipe making equipment to form a plating layer of a constant width. 3. An electric resistance welded steel pipe manufacturing facility comprising the surface treatment device according to claim 1 or 2, which removes the surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416638A JPH04275875A (en) | 1990-12-28 | 1990-12-28 | Surface layer treatment device for surface treated steel sheet and manufacturing equipment of electro-resistance-welded steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416638A JPH04275875A (en) | 1990-12-28 | 1990-12-28 | Surface layer treatment device for surface treated steel sheet and manufacturing equipment of electro-resistance-welded steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04275875A true JPH04275875A (en) | 1992-10-01 |
Family
ID=18524851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2416638A Pending JPH04275875A (en) | 1990-12-28 | 1990-12-28 | Surface layer treatment device for surface treated steel sheet and manufacturing equipment of electro-resistance-welded steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04275875A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100859582B1 (en) * | 2007-05-14 | 2008-09-23 | 설동우 | Spray guide of zinc coated steel pipe and eliminating device of spray residue |
| JP2019038096A (en) * | 2017-05-17 | 2019-03-14 | ゼネラル・エレクトリック・カンパニイ | Masking fixture |
-
1990
- 1990-12-28 JP JP2416638A patent/JPH04275875A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100859582B1 (en) * | 2007-05-14 | 2008-09-23 | 설동우 | Spray guide of zinc coated steel pipe and eliminating device of spray residue |
| JP2019038096A (en) * | 2017-05-17 | 2019-03-14 | ゼネラル・エレクトリック・カンパニイ | Masking fixture |
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