JP2013060645A - Method for forming corrosion resistant coating to metallic deformed pipe - Google Patents

Method for forming corrosion resistant coating to metallic deformed pipe Download PDF

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JP2013060645A
JP2013060645A JP2011201053A JP2011201053A JP2013060645A JP 2013060645 A JP2013060645 A JP 2013060645A JP 2011201053 A JP2011201053 A JP 2011201053A JP 2011201053 A JP2011201053 A JP 2011201053A JP 2013060645 A JP2013060645 A JP 2013060645A
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metal deformed
thermal spraying
pipe
spraying
metal
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JP5806893B2 (en
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Takeshi Narimatsu
武 成松
Naoto Kurabayashi
尚登 倉林
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Nippon Chutetsukan KK
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Abstract

PROBLEM TO BE SOLVED: To provide a method for forming a corrosion resistant coating to a metallic deformed pipe, with which formation of the corrosion resistant coatings to a plurality of metallic deformed pipes of the same kind can be easily performed in a short period of time, when a thermal spraying material made of zinc or the like is thermally sprayed on the outer face of a metallic deformed pipe by a thermal spraying robot to form the corrosion resistant coating on the outer face of the metallic deformed pipe.SOLUTION: While the thermal spraying gun of a thermal spraying robot 9 fitted with the thermal spraying gun is moved in a vertical direction against a metallic deformed pipe 6, the thermal spraying material is thermally sprayed from the thermal spraying gun toward the outer face of the metallic deformed pipe 6, and the first thermal spraying is completed. Subsequently, the metallic deformed pipe 6 is rotated with a vertical axis as the center, and the second thermal spraying is performed. The operation is repeated to form the corrosion resistant coating on the outer face of the metallic deformed pipes 6. At this time, the operation till the corrosion resistant coating is formed on the outer face of the metallic deformed pipes at proper coating thickness or coating weight is programmed, after the completion of the program, thermal spraying times for one metallic deformed pipe 6 are integrated, and, on and after, thermal spraying is performed to the metallic deformed pipes 6 of the same kind in accordance with the program.

Description

この発明は、金属異形管への防食被膜の形成方法、特に、ダクタイル鋳鉄製または鋼製の曲管、Ｔ字管等の金属異形管の外面に亜鉛等からなる溶射材を溶射ロボットにより溶射して、金属異形管の外面に防食被膜を形成するに際して、複数本の同種の金属異形管への防食被膜の形成が容易かつ短時間に行える、金属異形管への防食被膜の形成方法に関するものである。   The present invention relates to a method for forming an anti-corrosion coating on a metal deformed pipe, and in particular, a thermal spray material made of zinc or the like is sprayed on the outer surface of a metal deformed pipe such as ductile cast iron or steel, or a T-shaped pipe by a thermal spray robot. Thus, when forming an anticorrosion coating on the outer surface of a metal deformed tube, it relates to a method for forming an anticorrosion coating on a metal deformed tube, which can be easily and quickly formed on a plurality of the same kind of metal deformed tubes. is there.

例えば、ダクタイル鋳鉄製の直管は、その形状が２次元に近く、自動溶射装置の制御が比較的容易であることから、自動溶射装置により防食被膜を直管の外面に均一にかつ能率的に形成することは既に行われていた。   For example, a straight pipe made of ductile cast iron has a shape close to two dimensions, and the control of the automatic spraying device is relatively easy. Therefore, the automatic spraying device uniformly and efficiently applies the anticorrosion coating to the outer surface of the straight pipe. It was already done.

ダクタイル鋳鉄製の直管の外面に亜鉛等からなる防食被膜を溶射により自動的に形成する装置が特許文献１（特開平５−２２２５１１号公報）に開示されている。以下、この鋳鉄管への防食被膜の形成装置を従来装置といい、図面を参照しながら説明する。   An apparatus for automatically forming an anticorrosion coating made of zinc or the like on the outer surface of a ductile cast iron straight pipe by thermal spraying is disclosed in Japanese Patent Application Laid-Open No. 5-222511. Hereinafter, this anti-corrosion coating film forming apparatus on the cast iron pipe is referred to as a conventional apparatus and will be described with reference to the drawings.

図７は、従来装置を示す概略斜視図である。   FIG. 7 is a schematic perspective view showing a conventional apparatus.

図７に示すように、従来装置は、ダクタイル鋳鉄製の直管２１の長手方向に沿って敷設されたレール２２上を走行可能な台車２３と、台車２３上に設けられた、直管２１をその軸芯回りに回転させる回転ローラ２４と、回転ローラ２４上に載置された直管２１の外面に亜鉛等の溶射材を溶射して防食被膜２５を形成する溶射ガン２６と、直管２１の外面に形成された防食被膜２５を局部的に加熱するレーザ照射装置２７と、加熱された防食被膜２５を押圧する加圧ローラ２８とからなっている。溶射ガン２６とレーザ照射装置２７と加圧ローラ２８とは、台車２３の走行方向上流側から順次、間隔をあけて、この順番で配置されている。   As shown in FIG. 7, the conventional apparatus includes a carriage 23 that can run on a rail 22 laid along the longitudinal direction of a ductile cast iron straight pipe 21, and a straight pipe 21 provided on the carriage 23. A rotating roller 24 that rotates about its axis, a spray gun 26 that forms a corrosion-resistant coating 25 by spraying a spray material such as zinc on the outer surface of the straight tube 21 placed on the rotating roller 24, and the straight tube 21. It consists of a laser irradiation device 27 that locally heats the anticorrosion coating 25 formed on the outer surface and a pressure roller 28 that presses the heated anticorrosion coating 25. The thermal spray gun 26, the laser irradiation device 27, and the pressure roller 28 are arranged in this order at intervals from the upstream side in the traveling direction of the carriage 23.

上記従来装置によれば、以下のようにして、直管２１の外面に防食被膜２５が自動的に形成される。   According to the conventional apparatus, the anticorrosion coating 25 is automatically formed on the outer surface of the straight pipe 21 as follows.

回転ローラ２４上に直管２１を水平に載置し、台車２３を、図中、Ａ矢印方向に走行させるとともに、回転ローラ２３により直管２１を、図中、Ｂ矢印方向に回転させる。そして、溶射ガン２６とレーザ照射装置２７と加圧ローラ２８とをそれぞれ作動させる。これにより、直管２１の外面に、溶射ガン２６により亜鉛等の溶射材が溶射されて防食被膜２５が形成される。この後、防食被膜２５は、レーザ照射装置２７により局部加熱される。そして、局部加熱された防食被膜２５は、加圧ローラ２８により押圧される。防食被膜２５は、加圧ローラ２８により押圧されることによって、防食被膜２５に形成されているポーラス部が押し潰される。かくして、水などが浸透しにくい防食性能に優れた防食被膜２５が直管２１の外面に自動的に形成される。   The straight pipe 21 is placed horizontally on the rotating roller 24, and the carriage 23 runs in the direction of arrow A in the figure, and the straight pipe 21 is rotated in the direction of arrow B in the figure by the rotating roller 23. Then, the spray gun 26, the laser irradiation device 27, and the pressure roller 28 are operated. Thereby, a spraying material such as zinc is sprayed on the outer surface of the straight pipe 21 by the spray gun 26 to form the anticorrosion coating 25. Thereafter, the anticorrosion coating 25 is locally heated by the laser irradiation device 27. Then, the locally heated anticorrosion coating 25 is pressed by the pressure roller 28. When the anticorrosion coating 25 is pressed by the pressure roller 28, the porous portion formed on the anticorrosion coating 25 is crushed. Thus, the anticorrosion coating 25 having excellent anticorrosion performance that is difficult for water and the like to permeate is automatically formed on the outer surface of the straight pipe 21.

特開平５−２２２５１１号公報Japanese Patent Laid-Open No. 5-222511

上述したように、上述した従来装置によれば、防食性能に優れた防食被膜２５が直管２１の外面に自動的に形成される。   As described above, according to the above-described conventional apparatus, the anticorrosion coating 25 excellent in anticorrosion performance is automatically formed on the outer surface of the straight pipe 21.

このように、直管２１の外面に防食被膜２５を自動的に形成する場合には、直管２１を回転させながら、溶射ガン２６を一定速度で走行させれば良いが、曲管、Ｔ字管等の金属異形管の場合には、その形状が３次元で複雑であるために、従来装置では、防食被膜を形成することはできない。   As described above, when the anticorrosion coating 25 is automatically formed on the outer surface of the straight pipe 21, the spray gun 26 may be run at a constant speed while the straight pipe 21 is rotated. In the case of a metal deformed pipe such as a pipe, the shape is complicated in three dimensions, so that a conventional apparatus cannot form an anticorrosion coating.

そこで、溶射ロボットによって金属異形管の外面に溶射材を溶射して防食被膜を形成する方法が考えられるが、金属異形管に防食被膜が所定の膜厚で均一に形成されたか否かの確認は、金属異形管、１本毎に行う必要があり、防食被膜の形成に時間と手間を要していた。   Therefore, a method of spraying a spraying material on the outer surface of the metal deformed pipe by a spraying robot to form an anticorrosive film can be considered, but confirmation of whether the anticorrosive film is uniformly formed with a predetermined film thickness on the metal deformed pipe is possible. Therefore, it is necessary to carry out the metal deformed pipes one by one, and it takes time and labor to form the anticorrosion coating.

従って、この発明の目的は、ダクタイル鋳鉄製または鋼製の曲管、Ｔ字管等の金属異形管の外面に亜鉛等からなる溶射材を溶射ロボットにより溶射して、金属異形管の外面に、防食被膜を形成するに際して、複数本の同種の金属異形管への防食被膜の形成が容易かつ短時間に行える、金属異形管への防食被膜の形成方法を提供することにある。   Accordingly, the object of the present invention is to spray a thermal spray material made of zinc or the like on the outer surface of a metal deformed tube made of ductile cast iron or steel, a T-shaped tube, etc. An object of the present invention is to provide a method of forming an anticorrosion coating on a metal deformed tube, which can be easily and in a short time formed on a plurality of the same kind of metal deformed tubes when forming the anticorrosion coating.

この発明は、上記目的を達成するためになされたものであり、下記を特徴とする。   The present invention has been made to achieve the above object, and is characterized by the following.

請求項１に記載の発明は、溶射ガンが取り付けられた溶射ロボットの前記溶射ガンを、金属異形管に対して鉛直方向に移動させながら、前記溶射ガンから溶射材を前記金属異形管の外面に向けて溶射して、一回目の溶射を完了し、この後、前記金属異形管を鉛直軸を中心として回転させて、二回目の溶射を行うことを繰り返し行うことによって、前記金属異形管の外面に防食被膜を形成するに際して、前記金属異形管の外面に適正な膜厚または付着量にて前記防食被膜が形成されるまでの作動をプログラムし、前記プログラムが完了したら前記金属異形管の１本の溶射時間を積算し、以後、同種の前記金属異形管に対して、前記プログラムにしたがって溶射を行うことに特徴を有する。   According to the first aspect of the present invention, while the spray gun of the spray robot to which the spray gun is attached is moved in the vertical direction with respect to the metal deformed tube, the spray material is transferred from the spray gun to the outer surface of the metal deformed tube. The first surface spraying is completed, and then the outer surface of the metal deformed tube is repeatedly performed by rotating the metal deformed tube around the vertical axis and performing the second spraying. When the anticorrosion film is formed on the outer surface of the metal deformed pipe, an operation until the anticorrosion film is formed with an appropriate film thickness or adhesion amount is programmed. The thermal spraying time is integrated, and then the thermal spraying is performed on the same kind of metal deformed tube according to the program.

請求項２に記載の発明は、請求項１に記載の発明において、積算した前記溶射時間のデータを品質管理項目とすることに特徴を有するものである。   The invention described in claim 2 is characterized in that, in the invention described in claim 1, the accumulated data of the spraying time is used as a quality control item.

この発明によれば、ダクタイル鋳鉄製または鋼製の曲管、Ｔ字管等の金属異形管の外面に亜鉛等からなる溶射材を溶射ロボットにより溶射して、金属異形管の外面に、防食被膜を形成するに際して、複数本の同種の金属異形管への防食被膜の形成が容易かつ短時間に行える、金属異形管への防食被膜の形成方法を提供することができる。   According to the present invention, a thermal spray material made of zinc or the like is sprayed on the outer surface of a metal deformed pipe made of ductile cast iron or steel, a T-shaped pipe or the like by a thermal spray robot, and an anticorrosive coating is formed on the outer surface of the metal deformed pipe. It is possible to provide a method for forming an anticorrosion coating on a metal deformed tube that can be easily and quickly formed on a plurality of the same kind of metal deformable tubes.

この発明を実施するための、金属異形管への防食被膜の形成装置を示す平面図である。It is a top view which shows the formation apparatus of the anti-corrosion film to a metal deformed pipe for implementing this invention. この発明を実施するための、金属異形管への防食被膜の形成装置を示す側面図である。It is a side view which shows the formation apparatus of the anticorrosion film to a metal deformed pipe for implementing this invention. この発明を実施するための、金属異形管への防食被膜の形成装置の部分拡大図である。It is the elements on larger scale of the formation apparatus of the anti-corrosion film to a metal deformed pipe for implementing this invention. 金属異形管を示す正面図である。It is a front view which shows a metal deformed pipe. この発明のフロー図である。It is a flowchart of this invention. この発明による品質管理のフロー図である。It is a flowchart of quality control by this invention. 従来装置を示す概略斜視図である。It is a schematic perspective view which shows a conventional apparatus.

次に、この発明を実施するための、金属異形管への防食被膜の形成装置の一実施態様を、図面を参照しながら説明する。   Next, an embodiment of an apparatus for forming an anticorrosion coating on a metal deformed pipe for carrying out the present invention will be described with reference to the drawings.

図１は、この発明を実施するための、金属異形管への防食被膜の形成装置を示す平面図、図２は、この発明を実施するための、金属異形管への防食被膜の形成装置を示す側面図、図３は、この発明を実施するための、金属異形管への防食被膜の形成装置の部分拡大図である。   FIG. 1 is a plan view showing an apparatus for forming an anticorrosion coating on a metal deformed pipe for carrying out the present invention, and FIG. 2 shows an apparatus for forming an anticorrosion coating on a metal deformed pipe for carrying out the present invention. The side view shown and FIG. 3 are the elements on larger scale of the formation apparatus of the anticorrosion film to a metal deformed pipe for implementing this invention.

図１から図３において、１は、ターンテーブルである。ターンテーブル１は、駆動手段２により車輪３を介して軸（Ｍ）を中心として回転する。４は、金属異形管把持手段である。図３に示すように、金属異形管把持手段４は、ターンテーブル１上に、ターンテーブル１の回転方向に沿って間隔をあけて複数個（この例では３個）、設けられ、それぞれ駆動手段５により鉛直軸（Ｎ）を中心として回転可能になっている。金属異形管把持手段４は、金属異形管６を把持するスクロールチャックからなり、金属異形管６は、スクロールチャックの複数個の爪７によりターンテーブル１上に垂直に固定される。複数個の爪７は、エアー給排気口８からのエアーの給排気により開閉可能になっている。   1 to 3, reference numeral 1 denotes a turntable. The turntable 1 is rotated about the axis (M) through the wheels 3 by the driving means 2. 4 is a metal deformed tube gripping means. As shown in FIG. 3, a plurality of metal deformed tube gripping means 4 are provided on the turntable 1 at intervals along the rotational direction of the turntable 1 (three in this example). 5 enables rotation about the vertical axis (N). The metal deformed tube gripping means 4 includes a scroll chuck for gripping the metal deformed tube 6, and the metal deformed tube 6 is fixed vertically on the turntable 1 by a plurality of claws 7 of the scroll chuck. The plurality of claws 7 can be opened and closed by air supply / exhaust from an air supply / exhaust port 8.

９は、溶射ガン１０が取り付けられた溶射ロボットである。溶射ロボット９は、溶射ガン１０のヘッド１０ａを、金属異形管把持手段４により把持されて、定位置に固定された金属異形管６と正対させながら、ヘッド１０ａと金属異形管６との間の距離を一定に維持しつつ、溶射ガン１０を鉛直方向に移動可能になっている。溶射ガン１０からは、例えば、亜鉛と、アルミニウム−マグネシウム合金とからなる溶射材が金属異形管６に向けてアーク溶射される。溶射ロボット９は、溶射ガン１０を鉛直方向に移動させて、１回目の溶射が完了したら、金属異形管把持手段４を所定角度回転させ、２回目の溶射を行う。この操作を繰り返し行うことによって、金属異形管６の外面に溶射材を溶射し、かくして、金属異形管６の外面に防食被膜を形成する。   Reference numeral 9 denotes a thermal spray robot to which the thermal spray gun 10 is attached. The thermal spraying robot 9 holds the head 10a of the thermal spray gun 10 between the head 10a and the metal deformed tube 6 while facing the metal deformed tube 6 held by the metal deformed tube gripping means 4 and fixed at a fixed position. The spray gun 10 can be moved in the vertical direction while maintaining a constant distance. From the spray gun 10, for example, a spray material made of zinc and an aluminum-magnesium alloy is arc sprayed toward the metal deformed tube 6. The thermal spraying robot 9 moves the thermal spray gun 10 in the vertical direction, and when the first thermal spraying is completed, the metal deformed tube gripping means 4 is rotated by a predetermined angle to perform the second thermal spraying. By repeating this operation, the thermal spray material is sprayed on the outer surface of the metal deformed tube 6, and thus an anticorrosive coating is formed on the outer surface of the metal deformed tube 6.

１１は、集塵ブースである。集塵ブース１１は、昇降可能な開閉扉１２を有し、溶射ロボット９とターンテーブル１の一部を、少なくとも１つ（この例では１つ）の金属異形管把持手段４とともに遮蔽する。集塵ブース１１を設置することによって、金属異形管６に付着しなかった溶射材が周囲に飛散することを防止することができるので、作業環境が改善される。また、集塵ブース１１に、吸引機（図示せず）に接続された吸引フード１３を設けることによって、金属異形管６に付着しなかった溶射材の回収が可能になる。   11 is a dust collection booth. The dust collection booth 11 has an openable / closable door 12 that shields the thermal spray robot 9 and a part of the turntable 1 together with at least one (one in this example) metal deformed tube gripping means 4. By installing the dust collection booth 11, it is possible to prevent spraying material that has not adhered to the metal deformed pipe 6 from being scattered around, so that the working environment is improved. Further, by providing the dust collection booth 11 with a suction hood 13 connected to a suction machine (not shown), it becomes possible to collect the thermal spray material that has not adhered to the metal deformed tube 6.

以上のように構成されている、この発明を実施するための、金属異形管への防食被膜の形成装置によれば、以下のようにして、金属異形管の外面に防食被膜が形成される。   According to the apparatus for forming an anticorrosive film on the metal deformed pipe configured as described above, the anticorrosive film is formed on the outer surface of the metal deformed pipe as follows.

先ず、図１に示すように、ターンテーブル１のＰ２位置の金属異形管把持手段４に金属異形管６をセットする。なお、図４に示すような金属異形管６の場合、その上部が受口で、下部が別の金属異形管の受口内に挿入される挿口であるので、挿口部分には、防食被膜を形成せず、それ以外の外面に防食被膜を形成する。なお、この挿口部分には、別工程で樹脂塗装が施される。   First, as shown in FIG. 1, the metal deformed tube 6 is set on the metal deformed tube gripping means 4 at the position P <b> 2 of the turntable 1. In the case of the metal deformed tube 6 as shown in FIG. 4, the upper part is a receiving port, and the lower part is an inserting port inserted into the receiving port of another metal deformed tube. The anticorrosion film is formed on the other outer surface. In addition, resin coating is given to this insertion part by another process.

次いで、集塵ブース１１の開閉扉１２を開き、ターンテーブル１を軸（Ｍ）を中心として回転させて金属異形管６を集塵ブース１１内のＰ１位置に移動させる。この後、集塵ブース１１の開閉扉１２を閉じる。Ｐ１位置は、溶射ロボット９の溶射ガン１０と正対している。金属異形管６がＰ１位置に移動すると、溶射ロボット９は、溶射ガン１０をそのヘッド１０ａを金属異形管６と正対させながら、ヘッド１０ａと金属異形管６との間の距離を一定に維持しつつ、金属異形管６の上部から下部に沿って鉛直方向に移動させる。これによって、金属異形管６の外面には、一定幅で亜鉛等からなる溶射被膜が形成される。   Next, the opening / closing door 12 of the dust collection booth 11 is opened, the turntable 1 is rotated about the axis (M), and the metal deformed tube 6 is moved to the P1 position in the dust collection booth 11. Thereafter, the door 12 of the dust collection booth 11 is closed. The P1 position faces the thermal spray gun 10 of the thermal spray robot 9. When the metal deformed tube 6 moves to the P1 position, the thermal spray robot 9 keeps the distance between the head 10a and the metal deformed tube 6 constant while the spray gun 10 faces the head 10a to the metal deformed tube 6. However, the metal deformed pipe 6 is moved in the vertical direction along the lower part from the upper part. As a result, a sprayed coating made of zinc or the like with a constant width is formed on the outer surface of the metal deformed tube 6.

このようにして、１回目の溶射が完了したら、金属異形管把持手段４を鉛直軸（Ｎ）を中心として所定角度回転させ、１回目と同様にして２回目の溶射を行う。２回目の溶射によって、１回目の溶射により形成された溶射被膜に隣接して２回目の溶射被膜が形成される。   In this way, when the first spraying is completed, the metal deformed tube holding means 4 is rotated by a predetermined angle about the vertical axis (N), and the second spraying is performed in the same manner as the first time. By the second spraying, a second sprayed coating is formed adjacent to the sprayed coating formed by the first spraying.

以上の操作を繰り返し行うことによって、Ｐ１位置の金属異形管６の外面に溶射被膜が溶射される。この間に、Ｐ２位置の金属異形管把持手段４に別の金属異形管６をセットしておく。   By repeating the above operation, the sprayed coating is sprayed on the outer surface of the metal deformed tube 6 at the P1 position. During this time, another metal deformed tube 6 is set in the metal deformed tube gripping means 4 at the position P2.

このように、溶射ロボット９は、溶射ガン１０のヘッド１０ａと金属異形管６との間の距離を一定に維持しつつ、金属異形管６の上部から下部に沿って鉛直方向に移動させることを繰り返すのみで済むので、金属異形管６の形状が３次元で複雑であっても、金属異形管６を固定して溶射する場合に比べて、溶射ロボット９の作動経路等のティーチング等が簡素化される。   In this way, the thermal spraying robot 9 moves in the vertical direction from the upper part to the lower part of the metal deformed tube 6 while maintaining a constant distance between the head 10a of the spray gun 10 and the metal deformed tube 6. Since it is only necessary to repeat, even if the shape of the metal deformed tube 6 is three-dimensional and complicated, teaching such as the operation path of the thermal spray robot 9 is simplified compared to the case where the metal deformed tube 6 is fixed and sprayed. Is done.

また、集塵ブース１１によって、溶射ロボット９と溶射中の金属異形管６とが遮蔽されているので、金属異形管６に付着しなかった溶射材が周囲に飛散することを防止することができ、この結果、作業環境が改善される。しかも、金属異形管６に付着しなかった溶射材は、吸引フード１３を介して吸引機（図示せず）により回収されるので、付着しなかった溶射材のリサイクルを図ることができる。   Further, since the spraying robot 9 and the metal deformed pipe 6 being sprayed are shielded by the dust collection booth 11, it is possible to prevent the sprayed material that has not adhered to the metal deformed pipe 6 from being scattered around. As a result, the working environment is improved. Moreover, since the thermal spray material that has not adhered to the metal deformed tube 6 is collected by the suction machine (not shown) through the suction hood 13, the thermal spray material that has not adhered can be recycled.

このようにして、金属異形管６への防食被膜の形成が完了したら、集塵ブース１１の開閉扉１２を開き、ターンテーブル１を回転させて金属異形管６をＰ３位置に移動させる。これによって、防食被膜の形成が完了した金属異形管６は、集塵ブース１１外に搬出される。   When the formation of the anticorrosion coating on the metal deformed tube 6 is completed in this way, the door 12 of the dust collection booth 11 is opened, the turntable 1 is rotated, and the metal deformed tube 6 is moved to the P3 position. As a result, the metal deformed tube 6 for which the formation of the anticorrosion coating has been completed is carried out of the dust collection booth 11.

上記操作を繰り返し行うことによって、複数本の金属異形管６の外面への防食被膜の形成が連続的にかつ自動的に行われる。   By repeatedly performing the above operation, the formation of the anticorrosion coating on the outer surface of the plurality of metal deformed tubes 6 is performed continuously and automatically.

この発明は、上記のように、防食被膜の形成装置によって金属異形管の外面に防食被膜を形成する際に、複数本の同種の金属異形管への防食被膜の形成が容易かつ短時間に行えるようにするものである。   In the present invention, as described above, when the anticorrosion film is formed on the outer surface of the metal deformed pipe by the anticorrosion film forming apparatus, the anticorrosion film can be easily formed on the plurality of the same kind of metal deformable pipes in a short time. It is what you want to do.

すなわち、この発明は、金属異形管６の外面に溶射材の適正な膜厚または付着量にて防食被膜が形成されるまでの作動をプログラムし、このプログラムが完了したら金属異形管６の１本の溶射時間を積算し、以後、同種の金属異形管６に対して、前記プログラムにしたがって溶射を行うものである。   That is, the present invention programs the operation until the anticorrosion coating is formed on the outer surface of the metal deformed tube 6 with the appropriate film thickness or adhesion amount of the sprayed material, and when this program is completed, one of the metal deformed tubes 6 is programmed. The thermal spraying time is integrated, and thereafter, the same kind of metal deformed pipe 6 is sprayed according to the program.

金属異形管６の外面への溶射材の適正な膜厚または付着量と溶射時間との関係は、例えば、図５に示すフローにしたがって、管径・サイズ毎に予め求めておく。   The relationship between the appropriate film thickness or adhesion amount of the sprayed material on the outer surface of the metal deformed tube 6 and the spraying time is obtained in advance for each tube diameter / size, for example, according to the flow shown in FIG.

（１）溶射ロボット９のアームの軌跡を設定する（Ｐ１）。
（２）溶射ガン１０の位置と向きを設定する（Ｐ２）。
（３）溶射ワイヤーの送り速度を一定として、溶射時の溶射ガン１０の移動速度を設定して（Ｐ３）、溶射速度を設定する（Ｐ４）。溶射速度の設定に際しては、予め、金属異形管６の単位面積当りの溶射材付着量（ｇ／ｍ2）と金属異形管６の表面積（ｍ2）とを求めて、金属異形管６、１本当たりの溶射材の付着量（ｇ／本）を目標値として求めておく。
（４）溶射ガン１０の位置と向きによる溶射のＯＮ・ＯＦ位置を設定する（Ｐ５）。
（５）このようにして溶射ロボット９の操作のティーチングを設定する（Ｐ６）。
（６）試験溶射を行う（Ｐ７）。
（７）溶射前と溶射後の金属異形管６の質量を測定して、溶射材の付着量または膜厚を求める（Ｐ８）。
（８）上記（７）の結果、溶射材の付着量または膜厚が目標値であれば、ティーチングを完了する（プログラムを完了する。）（Ｐ９）。
（９）ティーチングが完了したら、金属異形管６、１本毎の溶射ＯＮからＯＦＦまでに要する溶射時間を積算して（Ｐ１０）、作業標準を完成する（Ｐ１１）。
（１０）上記（７）の結果、溶射材の付着量または膜厚が目標値でなければ、ティーチングを変更して（Ｐ１２）、溶射時の溶射ガン１０の移動速度の変更（Ｐ１３）および溶射速度の変更（Ｐ１４）を行って、溶射材の付着量または膜厚が目標値になるまで、試験溶射（Ｐ７）を繰り返し行う。 (1) The trajectory of the arm of the thermal spray robot 9 is set (P1).
(2) The position and orientation of the spray gun 10 are set (P2).
(3) The moving speed of the spray gun 10 at the time of spraying is set (P3), and the spraying speed is set (P4), with the feed rate of the spray wire being constant. In setting the spraying speed, the amount of the sprayed material per unit area (g / m 2 ) and the surface area (m 2 ) of the metal deformed tube 6 are obtained in advance, and the metal deformed tubes 6, 1 are obtained. The adhesion amount (g / piece) of the thermal spray material per book is obtained as a target value.
(4) The spray ON / OF position is set according to the position and orientation of the spray gun 10 (P5).
(5) In this way, teaching for operation of the thermal spray robot 9 is set (P6).
(6) Test spraying is performed (P7).
(7) The mass of the metal deformed tube 6 before and after spraying is measured to determine the amount of coating or film thickness of the sprayed material (P8).
(8) If, as a result of (7) above, the amount of sprayed material deposited or the film thickness is the target value, teaching is completed (program is completed) (P9).
(9) When teaching is completed, the time required for spraying from one metal spray tube 6 to one metal spray tube ON to OFF is integrated (P10), and the work standard is completed (P11).
(10) As a result of the above (7), if the adhesion amount or the film thickness of the thermal spray material is not the target value, the teaching is changed (P12), the moving speed of the thermal spray gun 10 during the thermal spraying is changed (P13), and the thermal spraying is performed. By changing the speed (P14), the test spraying (P7) is repeated until the adhesion amount or the film thickness of the sprayed material reaches the target value.

なお、防食被膜が形成された製品としての金属異形管６の品質を管理するに際しては、図６に示すように、金属異形管６、１本毎の積算した溶射時間を抽出し、この溶射時間データ日報により品質管理を行う。なお、金属異形管６への実際の溶射材の付着量または被膜の膜厚の確認は、定期的な抜き取りによって行う。   In addition, when managing the quality of the metal deformed tube 6 as a product on which the anticorrosion coating is formed, as shown in FIG. 6, the spraying time accumulated for each metal deformed tube 6 is extracted, and this spraying time is extracted. Perform quality control by daily data report. In addition, confirmation of the actual adhesion amount of the thermal spraying material to the metal deformed pipe 6 or the film thickness of the coating is performed by periodic sampling.

このように、金属異形管６の外面に適正な溶射材の付着量または膜厚により、防食被膜が形成されるまでの作動をプログラムし、このプログラムが完了したら金属異形管６、１本に要する溶射時間を積算し、以後、同種の金属異形管６に対して、前記プログラムにしたがって溶射を行うことにより、複数本の同種の金属異形管６への防食被膜の形成が容易かつ短時間に行える。すなわち、金属異形管６に要する溶射時間が目標範囲内であれば、金属異形管６には、適正な溶射材の付着量または膜厚の防食被膜が形成されていることが分かるので、金属異形管６、１本毎に溶射材の付着量または膜厚を確認する必要がなくなる。しかも、新たに溶射材の付着量または膜厚の測定器を設置する必要がなくなる。   In this way, the operation until the anticorrosion coating is formed is programmed according to the appropriate amount or thickness of the sprayed material applied to the outer surface of the metal deformed tube 6, and when this program is completed, one metal deformed tube 6 is required. By accumulating the spraying time and then spraying the same kind of metal deformed tube 6 according to the program, the formation of the anticorrosion coating on the plurality of the same kind of metal deformed tubes 6 can be performed easily and in a short time. . That is, if the spraying time required for the metal deformed tube 6 is within the target range, it can be seen that the metal deformed tube 6 has an appropriate amount of sprayed material deposited or an anticorrosive coating having a film thickness. It is not necessary to check the amount of sprayed material or the film thickness for each tube 6. Moreover, it is not necessary to newly install a measuring device for the amount of the sprayed material or the film thickness.

また、積算した溶射時間データを品質管理項目とすることによって、金属異形管６、１本毎に防食被膜の膜厚または溶射材付着量を確認する場合に比べて、金属異形管６の管理が容易かつ確実に行える。   Moreover, by using the accumulated spraying time data as a quality control item, the metal deformed tube 6 can be managed more than the case where the thickness of the anticorrosion coating or the amount of sprayed material adhered is checked for each metal deformed tube 6. Easy and reliable.

１：ターンテーブル
２：駆動手段
３：車輪
４：金属異形管把持手段
５：駆動手段
６：金属異形管
７：爪
８：エアー給排気口
９：溶射ロボット
１０：溶射ガン
１０ａ：ヘッド
１１：集塵ブース
１２：開閉扉
１３：吸引フード
２１：直管
２２：レール
２３：台車
２４：回転ローラ
２５：防食被膜
２６：溶射ガン
２７：レーザ照射装置
２８：加圧ローラ 1: Turntable 2: Driving means 3: Wheels 4: Metal deformed pipe gripping means 5: Driving means 6: Metal deformed pipe 7: Claw 8: Air supply / exhaust port 9: Thermal spray robot 10: Thermal spray gun 10a: Head 11: Collection Dust booth 12: Opening / closing door 13: Suction hood 21: Straight pipe 22: Rail 23: Carriage 24: Rotating roller 25: Anticorrosion coating 26: Thermal spray gun 27: Laser irradiation device 28: Pressure roller

Claims (2)

溶射ガンが取り付けられた溶射ロボットの前記溶射ガンを、金属異形管に対して鉛直方向に移動させながら、前記溶射ガンから溶射材を前記金属異形管の外面に向けて溶射して、一回目の溶射を完了し、この後、前記金属異形管を鉛直軸を中心として回転させて、二回目の溶射を行うことを繰り返し行うことによって、前記金属異形管の外面に防食被膜を形成するに際して、前記金属異形管の外面に適正な膜厚または付着量にて前記防食被膜が形成されるまでの作動をプログラムし、前記プログラムが完了したら前記金属異形管の１本の溶射時間を積算し、以後、同種の前記金属異形管に対して、前記プログラムにしたがって溶射を行うことを特徴とする、金属異形管への防食被膜の形成方法。   While spraying the thermal spray gun of the thermal spray robot to which the thermal spray gun is attached in a vertical direction with respect to the metal deformed pipe, the thermal spray material is sprayed from the spray gun toward the outer surface of the metal deformed pipe. After completing the thermal spraying, by rotating the metal deformed tube around the vertical axis and repeatedly performing the second spraying, when forming the anticorrosive coating on the outer surface of the metal deformed tube, Program the operation until the anticorrosion film is formed with an appropriate film thickness or adhesion amount on the outer surface of the metal deformed tube, and when the program is completed, accumulate one spraying time of the metal deformed tube, A method of forming an anticorrosion coating on a metal deformed tube, wherein the metal deformed tube of the same kind is sprayed according to the program. 積算した前記溶射時間のデータを品質管理項目とすることを特徴とする、請求項１に記載の、金属異形管への防食被膜の形成方法。   The method of forming an anticorrosive coating on a metal deformed pipe according to claim 1, wherein the accumulated data of the spraying time is used as a quality control item.
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CN104611665A (en) * 2014-12-16 2015-05-13 广东省工业技术研究院(广州有色金属研究院) Method for thermal spraying preparation of coating on large size bending pipe workpiece
CN105970143A (en) * 2016-07-20 2016-09-28 中原内配集团股份有限公司 Hot spraying equipment, hot spraying system and hot spraying process thereof
CN108588619A (en) * 2018-04-15 2018-09-28 武汉市整流器研究所 A kind of direct current twin wire arc spray unit and method
CN115181929A (en) * 2022-07-20 2022-10-14 新兴铸管股份有限公司 Zinc spraying device and control method thereof

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CN104611665A (en) * 2014-12-16 2015-05-13 广东省工业技术研究院(广州有色金属研究院) Method for thermal spraying preparation of coating on large size bending pipe workpiece
CN105970143A (en) * 2016-07-20 2016-09-28 中原内配集团股份有限公司 Hot spraying equipment, hot spraying system and hot spraying process thereof
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CN108588619A (en) * 2018-04-15 2018-09-28 武汉市整流器研究所 A kind of direct current twin wire arc spray unit and method
CN115181929A (en) * 2022-07-20 2022-10-14 新兴铸管股份有限公司 Zinc spraying device and control method thereof

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