JP2004306139A5 - - Google Patents
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- JP2004306139A5 JP2004306139A5 JP2004091979A JP2004091979A JP2004306139A5 JP 2004306139 A5 JP2004306139 A5 JP 2004306139A5 JP 2004091979 A JP2004091979 A JP 2004091979A JP 2004091979 A JP2004091979 A JP 2004091979A JP 2004306139 A5 JP2004306139 A5 JP 2004306139A5
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この発明は、以下のような発明である。
（１）アルミニウム合金用の原材料を溶解させてアルミニウム合金溶湯を得る溶解工程と、この溶解工程からのアルミニウム合金溶湯中のアルミニウム酸化物および水素ガスを除去する溶湯処理工程と、この溶湯処理工程からのアルミニウム合金溶湯を鋳造してアルミニウム合金水平連続鋳造棒を得る水平連続鋳造工程と、この水平連続鋳造工程で鋳造したアルミニウム合金水平連続鋳造棒を定尺に切断する切断工程とを有し、これらの工程を連続して行うことを特徴とするアルミニウム合金水平連続鋳造棒の製造方法。
（２）溶解工程から水平連続鋳造工程までの間の、アルミニウム合金溶湯の平均温度降下率を１５％以内にすることを特徴とする（１）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（３）溶解工程における溶解保持炉の溶湯処理工程に対する出湯を、出湯面が被出湯面よりも高いドロップ出湯方法、または、出湯面が被出湯面に連なるレベルフィード出湯方法で行うことを特徴とする（１）または（２）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（４）溶解工程は、溶湯処理工程に対して並列に配置された複数の溶解保持炉を用いることを特徴とする（１）から（３）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（５）切断工程で、水平連続鋳造工程における少なくとも１本の鋳造ラインを再スタートできることを特徴とする（１）から（４）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（６）切断工程で切断されたアルミニウム合金水平連続鋳造棒を検査する非破壊検査工程を設けたことを特徴とする（１）から（５）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（７）切断工程と非破壊検査工程との間に、アルミニウム合金水平連続鋳造棒を熱処理する熱処理工程を設けたことを特徴とする（６）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（８）切断工程と熱処理工程との間に、アルミニウム合金水平連続鋳造棒を検査する非破壊検査工程を設けたことを特徴とする（７）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（９）熱処理工程とこの熱処理工程の下流側に位置する非破壊検査工程との間に、アルミニウム合金水平連続鋳造棒の外周部分を除去する外周除去工程を設けたことを特徴とする（７）または（８）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１０）熱処理工程と外周除去工程との間に、アルミニウム合金水平連続鋳造棒を検査する非破壊検査工程を設けたことを特徴とする（９）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１１）切断工程と非破壊検査工程との間に、アルミニウム合金水平連続鋳造棒の外周部分を除去する外周除去工程を設けたことを特徴とする（６）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１２）切断工程と外周除去工程との間に、アルミニウム合金水平連続鋳造棒を検査する非破壊検査工程を設けたことを特徴とする（１１）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１３）非破壊検査工程の後に、熱処理工程を設けたことを特徴とする（６）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１４）非破壊検査工程の後に、外周除去工程を設けたことを特徴とする（６）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１５）非破壊検査工程の後に、熱処理工程と外周除去工程とを設けたことを特徴とする（６）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１６）非破壊検査工程の後に、熱処理工程と外周除去工程とを設け、その熱処理工程と外周除去工程との間にさらに非破壊検査工程を設けたことを特徴とする（６）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１７）非破壊検査工程の直前に、アルミニウム合金水平連続鋳造棒の曲がりを矯正する矯正工程を設け、矯正工程の直前に、アルミニウム合金水平連続鋳造棒をその横手方向およびその長手方向の搬送を組み合わせた搬送方法で整列させる整列工程を設けたことを特徴とする（６）から（１６）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１８）非破壊検査工程は、Ｘ線を用いてアルミニウム合金水平連続鋳造棒の内部欠陥を検出するＸ線検査方法、超音波を用いてアルミニウム合金水平連続鋳造棒の内部欠陥を検出する超音波検査方法から選ばれる少なくとも１つの内部検査と、渦電流によってアルミニウム合金水平連続鋳造棒の表面欠陥を検出する渦電流検査方法、アルミニウム合金水平連続鋳造棒の表面画像を処理して表面欠陥を検出する画像処理検査方法、目視によってアルミニウム合金水平連続鋳造棒の表面欠陥を検出する目視検査方法から選ばれる少なくとも１つの表面検査とを組み合わせていることを特徴とする（６）から（１７）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（１９）外周除去工程の直前に、アルミニウム合金水平連続鋳造棒の曲がりを矯正する矯正工程を設け、矯正工程の直前に、アルミニウム合金水平連続鋳造棒をその横手方向およびその長手方向の搬送を組み合わせた搬送方法で整列させる整列工程を設けたことを特徴とする（９）から（１２）および（１４）から（１６）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２０）熱処理工程の直前に、アルミニウム合金水平連続鋳造棒を結束する結束工程を設け、熱処理工程の直後に、アルミニウム合金水平連続鋳造棒の結束を解く解束工程を設けたことを特徴とする（７）から（１０）、（１３）、（１４）から（１６）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２１）最後の非破壊検査工程で良品と判定されたアルミニウム合金水平連続鋳造棒を梱包する梱包工程を設けたことを特徴とする（６）から（２０）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２２）熱処理工程の後に、アルミニウム合金水平連続鋳造棒を梱包する梱包工程を設けたことを特徴とする（１３）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２３）外周除去工程の後に、アルミニウム合金水平連続鋳造棒を梱包する梱包工程を設けたことを特徴とする請求項（１４）から（１６）のいずれか１項に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２４）梱包工程の前に、アルミニウム合金水平連続鋳造棒を段積みした後、結束する結束工程を設けたことを特徴とする（２１）から（２３）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２５）段積みは、アルミニウム合金水平連鋳造棒の両端部分のみを支持して積み重ねることを特徴とする（２４）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２６） 結束工程の直前の搬送工程が、アルミニウム合金水平連続鋳造棒を一時的に貯える貯留機能を有することを特徴とする（２４）または（２５）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２７） 貯留機能が、アルミニウム合金水平連続鋳造棒棒を横へ搬送することによるものであることを特徴とする（２６）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２８）搬送工程が、スラットコンベアを用いていることを特徴とする（２６）または（２７）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（２９）最後の非破壊検査工程は、アルミニウム合金水平連続鋳造棒をプローブ内に貫通させる貫通型渦電流探傷検査工程、および、プローブをアルミニウム合金水平連続鋳造棒の円周方向へ回転させる回転型渦電流探傷検査工程でアルミニウム合金水平連続鋳造棒の表面部分を検査する第１非破壊検査工程と、アルミニウム合金水平連続鋳造棒の内部を検査する第２非破壊検査工程とを有し、貫通型渦電流探傷検査工程および回転型渦電流探傷検査工程で検出した欠陥の各検出個数を検出個数判定基準で比較して欠陥分布集合を求め、この各欠陥分布集合における欠陥の検出個数を集合判定基準で比較して集合判定基準以上の集合を求め、この集合判定基準以上の集合に基づいて溶湯処理工程の溶湯処理条件、水平連続鋳造工程の鋳造条件、外周除去工程の切削条件を制御する制御工程を設けたことを特徴とする（９）から（１２）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法。
（３０） 最後の非破壊検査工程は、アルミニウム合金水平連続鋳造棒をプローブ内に貫通させる貫通型渦電流探傷検査工程、および、プローブをアルミニウム合金水平連続鋳造棒の円周方向へ回転させる回転型渦電流探傷検査工程でアルミニウム合金水平連続鋳造棒の表面部分を検査する第１非破壊検査工程と、アルミニウム合金水平連続鋳造棒の内部を検査する第２非破壊検査工程とを有し、貫通型渦電流探傷検査工程および回転型渦電流探傷検査工程で検出した欠陥の各検出個数を検出個数判定基準で比較して欠陥分布集合を求め、この各欠陥分布集合における欠陥の検出個数を集合判定基準で比較して集合判定基準以上の集合を求め、この集合判定基準以上の集合に基づいて矯正工程の矯正条件を制御する制御工程を設けたことを特徴とする（１７）に記載のアルミニウム合金水平連続鋳造棒の製造方法。
（３１） （２）から（３０）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法に用いることを特徴とするアルミニウム合金水平連続鋳造棒の製造設備。
（３２） （１）から（３１）のいずれか１つに記載のアルミニウム合金水平連続鋳造棒の製造方法またはアルミニウム合金水平連続鋳造棒の製造設備で製造されたことを特徴とするアルミニウム合金水平連続鋳造棒。
（３３） 直径が２０ｍｍ〜１００ｍｍであることを特徴とする（３２）に記載のアルミニウム合金水平連続鋳造棒。
（３４） Ｓｉの含有量が７質量％〜１４質量％、鉄の含有量が０．１質量％〜０．５質量％、銅の含有量が１質量％〜９質量％、Ｍｎの含有量が０質量％〜０．５質量％、Ｍｇの含有量が０．１質量％〜１質量％であることを特徴とする（３２）または （３３）に記載のアルミニウム合金水平連続鋳造棒。
The present invention is as follows.
(1) From a melting step of melting a raw material for an aluminum alloy to obtain a molten aluminum alloy, a molten metal treatment step of removing aluminum oxide and hydrogen gas in the molten aluminum alloy from the melting step, and the molten metal treatment step A horizontal continuous casting process for casting an aluminum alloy molten metal to obtain an aluminum alloy horizontal continuous cast bar, and a cutting process for cutting the aluminum alloy horizontal continuous cast bar cast in this horizontal continuous casting process to a fixed length. A process for producing an aluminum alloy horizontal continuous cast bar, characterized in that the above process is continuously performed.
(2) The method for producing an aluminum alloy horizontal continuous casting rod according to (1), wherein an average temperature drop rate of the molten aluminum alloy is within 15% between the melting step and the horizontal continuous casting step.
(3) It is characterized in that the tapping with respect to the melting treatment process of the melting and holding furnace in the melting step is performed by a drop tapping method in which the tapping surface is higher than the tapping surface or the level feed tapping method in which the tapping surface is continuous with the tapping surface. (1) The manufacturing method of the aluminum alloy horizontal continuous casting rod as described in (1) or (2).
(4) The aluminum alloy horizontal continuous casting according to any one of (1) to (3), wherein the melting step uses a plurality of melting and holding furnaces arranged in parallel with the molten metal processing step. A method of manufacturing a bar.
(5) The method for producing an aluminum alloy horizontal continuous casting rod according to any one of (1) to (4), wherein at least one casting line in the horizontal continuous casting step can be restarted in the cutting step. .
(6) The aluminum alloy horizontal continuous casting according to any one of (1) to (5), wherein a nondestructive inspection step for inspecting the aluminum alloy horizontal continuous casting rod cut in the cutting step is provided. A method for manufacturing bars.
(7) The method for producing an aluminum alloy horizontal continuous cast bar according to (6), wherein a heat treatment step for heat treating the aluminum alloy horizontal continuous cast bar is provided between the cutting step and the nondestructive inspection step.
(8) The method for producing an aluminum alloy horizontal continuous casting rod according to (7), wherein a nondestructive inspection step for inspecting the aluminum alloy horizontal continuous casting rod is provided between the cutting step and the heat treatment step.
(9) An outer periphery removing step for removing the outer peripheral portion of the aluminum alloy horizontal continuous cast rod is provided between the heat treatment step and the nondestructive inspection step located downstream of the heat treatment step (7) Or the manufacturing method of the aluminum alloy horizontal continuous cast bar as described in (8).
(10) The method for producing an aluminum alloy horizontal continuous casting rod according to (9), wherein a nondestructive inspection step for inspecting the aluminum alloy horizontal continuous casting rod is provided between the heat treatment step and the outer periphery removing step. .
(11) The aluminum alloy horizontal continuous casting rod according to (6), wherein an outer periphery removing step for removing the outer peripheral portion of the aluminum alloy horizontal continuous casting rod is provided between the cutting step and the nondestructive inspection step. Manufacturing method.
(12) The method for producing an aluminum alloy horizontal continuous casting rod according to (11), wherein a nondestructive inspection step for inspecting the aluminum alloy horizontal continuous casting rod is provided between the cutting step and the outer periphery removing step. .
(13) The method for producing an aluminum alloy horizontal continuous casting rod according to (6), wherein a heat treatment step is provided after the nondestructive inspection step.
(14) The method for producing an aluminum alloy horizontal continuous casting rod according to (6), wherein an outer periphery removing step is provided after the nondestructive inspection step.
(15) The method for producing an aluminum alloy horizontal continuous cast bar according to (6), wherein a heat treatment step and an outer periphery removal step are provided after the nondestructive inspection step.
(16) The heat treatment step and the outer periphery removal step are provided after the nondestructive inspection step, and a nondestructive inspection step is further provided between the heat treatment step and the outer periphery removal step. Manufacturing method of aluminum alloy horizontal continuous casting rod.
(17) Immediately before the nondestructive inspection process, a straightening process for correcting the bending of the aluminum alloy horizontal continuous cast bar is provided, and immediately before the straightening process, the aluminum alloy horizontal continuous cast bar is conveyed in the transverse direction and in the longitudinal direction thereof. The method for producing an aluminum alloy horizontal continuous cast bar according to any one of (6) to (16), wherein an alignment step of aligning by a combined conveying method is provided.
(18) The nondestructive inspection step is an X-ray inspection method for detecting internal defects of an aluminum alloy horizontal continuous cast bar using X-rays, and an ultrasonic wave for detecting internal defects of an aluminum alloy horizontal continuous cast bar using ultrasonic waves. At least one internal inspection selected from inspection methods, eddy current inspection method for detecting surface defects of aluminum alloy horizontal continuous cast bar by eddy current, surface image of aluminum alloy horizontal continuous cast bar processed to detect surface defects Any one of (6) to (17), wherein the image processing inspection method is combined with at least one surface inspection selected from a visual inspection method for detecting a surface defect of an aluminum alloy horizontal continuous cast rod by visual inspection. The manufacturing method of the aluminum alloy horizontal continuous cast bar as described in one.
(19) A straightening process for correcting the bending of the aluminum alloy horizontal continuous cast bar is provided immediately before the outer periphery removing process, and the aluminum alloy horizontal continuous cast bar is combined with conveyance in the lateral direction and its longitudinal direction immediately before the straightening process. The method for producing an aluminum alloy horizontal continuous cast bar according to any one of (9) to (12) and (14) to (16), characterized in that an alignment step for aligning by the transport method is provided.
(20) A bundling step for bundling an aluminum alloy horizontal continuous casting rod is provided immediately before the heat treatment step, and a bundling step for unbundling the aluminum alloy horizontal continuous casting rod is provided immediately after the heat treatment step. (7) to (10), (13), (14) to (16) The manufacturing method of the aluminum alloy horizontal continuous casting rod as described in any one of.
(21) The aluminum according to any one of (6) to (20), wherein a packing step is provided for packing the aluminum alloy horizontal continuous cast rod determined to be non-defective in the last nondestructive inspection step. Manufacturing method of alloy horizontal continuous casting rod.
(22) The method for producing an aluminum alloy horizontal continuous casting rod according to (13), wherein a packing step for packing the aluminum alloy horizontal continuous casting rod is provided after the heat treatment step.
(23) After about periphery removing Engineering, aluminum alloy horizontal continuous according to any one of claims, characterized in that a packing step of packing the aluminum alloy horizontal continuous cast bar (14) (16) A method for manufacturing a cast bar.
(24) The aluminum alloy horizontal continuous casting rod according to any one of (21) to (23), wherein a bundling step of bundling after stacking aluminum alloy horizontal continuous casting rods is provided before the packing step. Production method.
(25) The method for producing an aluminum alloy horizontal continuous cast bar according to (24), wherein the stacking is performed by supporting only both end portions of the aluminum alloy horizontal continuous cast bar.
(26) The production of an aluminum alloy horizontal continuous casting rod according to (24) or (25), wherein the transporting step immediately before the binding step has a storage function of temporarily storing the aluminum alloy horizontal continuous casting rod. Method.
(27) The method for producing an aluminum alloy horizontal continuous cast bar as described in (26), wherein the storage function is based on conveying the aluminum alloy horizontal continuous cast bar horizontally.
(28) The method for producing an aluminum alloy horizontal continuous casting rod according to (26) or (27), wherein the conveying step uses a slat conveyor.
(29) The last nondestructive inspection step includes a through-type eddy current flaw detection inspection step in which the aluminum alloy horizontal continuous casting rod is penetrated into the probe, and a rotary type in which the probe is rotated in the circumferential direction of the aluminum alloy horizontal continuous casting rod. A first nondestructive inspection step for inspecting the surface portion of an aluminum alloy horizontal continuous casting rod in an eddy current flaw detection inspection step, and a second nondestructive inspection step for inspecting the inside of the aluminum alloy horizontal continuous casting rod, and a penetration type By comparing the detected number of defects detected in the eddy current inspection process and the rotary eddy current inspection process with the detection number criterion, a defect distribution set is obtained, and the detected number of defects in each defect distribution set is determined as a group criterion. In order to obtain a set that is equal to or higher than the set criterion, and based on the set that is equal to or higher than the set criterion, the molten metal treatment condition in the molten metal treatment process and the casting condition in the horizontal continuous casting process are determined. Method for producing an aluminum alloy horizontal continuous casting rod according to any one of to, characterized in that a control step of controlling the cutting conditions of the periphery removing step (9) (12).
(30) The last non-destructive inspection step includes a through-type eddy current flaw detection inspection step in which the aluminum alloy horizontal continuous casting rod penetrates into the probe, and a rotary type in which the probe is rotated in the circumferential direction of the aluminum alloy horizontal continuous casting rod. A first nondestructive inspection step for inspecting the surface portion of an aluminum alloy horizontal continuous casting rod in an eddy current flaw detection inspection step, and a second nondestructive inspection step for inspecting the inside of the aluminum alloy horizontal continuous casting rod, and a penetration type By comparing the detected number of defects detected in the eddy current inspection process and the rotary eddy current inspection process with the detection number criterion, a defect distribution set is obtained, and the detected number of defects in each defect distribution set is determined as a group criterion. A control step is provided in which a set that is equal to or higher than the set determination criterion is obtained by comparison in the above, and the correction conditions of the correction step are controlled based on the set that is equal to or higher than the set determination criterion. The method for producing an aluminum alloy horizontal continuous casting rod according to (17).
(31) A production facility for an aluminum alloy horizontal continuous cast bar, which is used in the method for producing an aluminum alloy horizontal continuous cast bar according to any one of ( 2 ) to (30).
(32) An aluminum alloy horizontal continuous produced by the method for producing an aluminum alloy horizontal continuous cast rod according to any one of (1) to (31) or the aluminum alloy horizontal continuous cast rod production facility. Casting rod.
(33) The aluminum alloy horizontal continuous casting rod according to (32), wherein the diameter is 20 mm to 100 mm.
(34) Si content is 7 mass% to 14 mass%, iron content is 0.1 mass% to 0.5 mass%, copper content is 1 mass% to 9 mass%, Mn content The aluminum alloy horizontal continuous casting rod according to (32) or (33), characterized in that is 0 mass% to 0.5 mass% and the Mg content is 0.1 mass% to 1 mass%.
なお、アルミニウム合金水平連続鋳造棒２の鋳造状態を監視するために監視室を設置し、この監視室で、水平連続鋳造装置３０１上部に設置した監視カメラによる鋳造状態を、監視できるようにすることにより、連数が多い場合、監視カメラによって鋳造状態の全体が監視可能になる。
特に、アルミニウム合金水平連続鋳造棒２の鋳肌のシワの発生が大きくなると、鋳造状態が不安定となって連続運転の妨げとなるので、事前に運転条件の調整を行ってトラブルを未然に防止することが可能になる。
そして、鋳造時に発生する蒸気で鋳肌の監視が妨げられないように、観察箇所に排気ブロアーを設置し、充分に鋳肌の監視ができるようにするのが好ましい。
水平連続鋳造装置３０１は、ここで述べたもの以外に、従来のものを用いることができる。
In order to monitor the casting state of the aluminum alloy horizontal continuous casting rod 2, a monitoring room is installed, and in this monitoring room, it is possible to monitor the casting state by a monitoring camera installed on the top of the horizontal continuous casting apparatus 301. Thus, when the number of stations is large, the entire casting state can be monitored by the monitoring camera.
In particular, if wrinkles on the casting surface of the aluminum alloy horizontal continuous casting rod 2 become large, the casting state becomes unstable and hinders continuous operation. Therefore, the operating conditions are adjusted in advance to prevent troubles. It becomes possible to do.
And it is preferable to install an exhaust blower at the observation location so that the casting surface can be sufficiently monitored so that the monitoring of the casting surface is not hindered by the steam generated during casting.
As the horizontal continuous casting apparatus 301, a conventional one can be used in addition to the one described here.
上記した説明は、この発明の一例であるが、製品品質や工程管理に合わせて種々の変更が可能である。
まず、どの段階のアルミニウム合金水平連続鋳造棒を最終製品とするかにより、そのアルミニウム合金水平連続鋳造棒を梱包する梱包工程を、結束工程に代えて切断工程の後、熱処理工程の後、外周除去工程の後に設けてもよい。
そして、非破壊検査を切断工程の後、および／または、熱処理工程の後で行ってもよく、さらに、非破壊検査における内部検査と外部検査とを入れ替えてもよい。
このように非破壊検査を移動させたり、複数個所で行う場合、その前にアルミニウム合金水平連続鋳造棒を整列および／または矯正させるとよい。
また、非破壊検査の前にアルミニウム合金水平連続鋳造棒の曲がりを矯正しているが、アルミニウム合金水平連続鋳造棒の外周を除去した後に何の加工も行っていないので、非破壊検査の前の曲がり矯正を省略することができ、また、外周除去工程が充分に工程管理されてピーリング痕がアルミニウム合金水平連続鋳造棒に残らない場合は、表面検査を省略することができる。
さらに、アルミニウム合金水平連続鋳造棒に曲がりがない場合は、当然のことながら、アルミニウム合金水平連続鋳造棒の曲がりを矯正する必要はない。
そして、外周除去工程を、切断工程の後で行ってもよい。
また、結束工程、熱処理工程は必要に応じて省略することができる。
さらに、整列工程は、複数本のアルミニウム合金水平連続鋳造棒が同時に加工できれば、必ずしも必要とするものではない。
なお、非破壊検査工程は、アルミニウム合金連続鋳造棒全体に対して行えるので、アルミニウム合金水平連続鋳造棒に限定されるものではない。
The above description is an example of the present invention, but various changes can be made according to product quality and process management.
First, depending on which stage of the aluminum alloy horizontal continuous cast bar is the final product, the packing process for packing the aluminum alloy horizontal continuous cast bar is replaced by the bundling process, the cutting process, the heat treatment process, and the outer periphery removal. You may provide after a process.
Then, the nondestructive inspection may be performed after the cutting step and / or after the heat treatment step, and the internal inspection and the external inspection in the nondestructive inspection may be interchanged.
In this way, when the non-destructive inspection is moved or performed at a plurality of locations, the aluminum alloy horizontal continuous cast bar may be aligned and / or corrected before that.
Although you are correct bending of aluminum alloy horizontal continuous cast bar before NDI, since not doing any processing after removal of the outer periphery of the aluminum alloy horizontal continuous casting rod, before NDI In the case where the outer periphery removing process is sufficiently managed and no peeling marks remain on the aluminum alloy horizontal continuous cast bar, the surface inspection can be omitted.
Further, when the aluminum alloy horizontal continuous cast bar is not bent, it is needless to say that the bending of the aluminum alloy horizontal continuous cast bar need not be corrected.
And you may perform an outer periphery removal process after a cutting process.
Further, the bundling step and the heat treatment step can be omitted as necessary.
Furthermore, the alignment step is not necessarily required if a plurality of aluminum alloy horizontal continuous cast bars can be processed simultaneously.
In addition, since a nondestructive inspection process can be performed with respect to the whole aluminum alloy continuous casting rod, it is not limited to an aluminum alloy horizontal continuous casting rod.
具体的には、以下のように判定してフィードバックをかける。
集合Ａ（貫通型プローブによる検出欠陥個数が検出個数判定基準以上、かつ、回転型プローブによる検出欠陥個数が検出個数判定基準以上）に分類される被検査体が多い場合は、被検査体の表面に、大きな開放部を有する形状の欠陥が多発していることになる。
例えば、鋳肌が大きく荒れている状態では、このような欠陥が多発する。
このような状況の欠陥は鋳造段階で発生したものが多いので、図２３に示すフィードバックＦ３のように水平連続鋳造装置３０１への鋳造条件のフィードバックが有効である。
具体的には、鋳造時に供給する潤滑油や気体の量が不適当な状態であるので、これらを適正な量に調整することを挙げることができる。あるいは、水平連続鋳造装置３０１の機械的な状態の点検、補修を実施する。点検個所としては、例えば、同調クランプ機構４０２（図７参照）、切断機構４０１（図７参照）の速度、水平連続鋳造装置３０１からでてきた鋳塊を挟み込む力、振動の発生状況などを挙げることができる。
Specifically, the following judgment is made and feedback is given.
If there are many objects to be inspected that are classified into the set A (the number of detected defects by the penetrating probe is equal to or larger than the detection number criterion and the number of detected defects by the rotary probe is equal to or larger than the detected number criterion), the surface of the object to be inspected In addition, defects having a shape having large open portions frequently occur.
For example, such defects frequently occur when the casting surface is greatly rough.
Since many defects in such a situation have occurred in the casting stage, it is effective to feed back the casting conditions to the horizontal continuous casting apparatus 301 as feedback F3 shown in FIG.
Specifically, since the amount of lubricating oil or gas supplied at the time of casting is in an inappropriate state, adjusting these to an appropriate amount can be mentioned. Alternatively, the mechanical state of the horizontal continuous casting apparatus 301 is inspected and repaired. Examples of inspection points include the speed of the synchronized clamp mechanism 402 (see FIG. 7), the speed of the cutting mechanism 401 (see FIG. 7), the force for sandwiching the ingot from the horizontal continuous casting apparatus 301, and the occurrence of vibrations. be able to.
集合Ｂ（貫通型プローブによる検出欠陥個数が検出個数判定基準未満、かつ、回転型プローブによる検出欠陥個数が検出個数判定基準以上）に分類される被検査体が多い場合は、機械加工時に欠陥が多発している。
例えば、機械加工で刃物の当たり状態が不適切である場合、矯正が不充分でツールマークが残っている場合、逆に、矯正が強すぎて矯正機のロールのマークが転写されて傷になっている場合、搬送ライン上にアルミニウム合金水平連続鋳造棒の表面に傷を付けるような突起などがある場合、このような欠陥が多発する。
このような状況の欠陥は加工工程で発生したものが多いので、図２３に示すフィードバックＦ１，Ｆ２のように矯正機１００１および外周除去装置１１０１への機械加工条件のフィードバックが有効である。
具体的には、外周面削条件（切削条件）および矯正条件（アルミニウム合金水平連続鋳造棒の外周面削後で検査前に実施する矯正）を調整する。あるいは、外周除去装置１１０１、矯正機１００１、搬送ラインの機械的な状態の点検、補修を実施する。
If there are many inspected objects that are classified into set B (the number of detected defects by the penetrating probe is less than the detection number criterion and the number of detected defects by the rotary probe is greater than or equal to the detection number criterion), there are defects during machining. It occurs frequently.
For example, if the cutting state of the blade is inappropriate in machining, or if the tool mark remains and the correction is not sufficient, the correction is too strong and the mark on the roll of the straightening machine is transferred and scratched. In such a case, such a defect occurs frequently when there is a projection or the like that damages the surface of the aluminum alloy horizontal continuous casting rod on the conveying line.
Since many defects in such a situation have occurred in the machining process, it is effective to feed back machining conditions to the straightening machine 1001 and the outer peripheral removal device 1101 like feedbacks F1 and F2 shown in FIG.
Specifically, outer peripheral surface cutting conditions (cutting conditions) and straightening conditions (correction performed after inspection of the outer peripheral surface of the aluminum alloy horizontal continuous cast bar and before inspection) are adjusted. Alternatively, the inspection and repair of the mechanical state of the outer periphery removing device 1101, the straightening machine 1001, and the conveyance line are performed.
集合Ｃ（貫通型プローブによる検出欠陥個数が検出個数判定基準以上、かつ、回転型プローブによる検出欠陥個数が検出個数判定基準未満）に分類される被検査体が多い場合は、被検査体の表面に、円周方向の欠陥が多発していることになる。
例えば、鋳肌表面に焼き付や、酸化物や、鋳型を構成する耐火材の巻き込みが多発すると、このような欠陥が多発する。
このような状況の欠陥は異物系欠陥が多く、これらは溶解鋳造工程で発生するので、図２３に示すフィードバックＦ３，Ｆ４のように溶湯処理装置２０１への溶湯処理条件、水平連続鋳造装置３０１への鋳造条件のフィードバックが有効である。
この溶湯処理条件へのフィードバック処理としての具体例は、導入する不活性ガスの流量や攪拌部材の回転数の調整や、攪拌部材の劣化具合、ガス漏れの点検を挙げることができる。
また、鋳造条件へのフィードバック処理としての具体例は、鋳造時に供給する潤滑油や気体の量が過多の場合が多いので、それらの供給量を適正な量に絞ることを挙げることができる。
If there are many objects to be inspected that are classified into set C (the number of detected defects by the penetrating probe is equal to or greater than the detection number criterion and the number of detected defects by the rotary probe is less than the detection number criterion), the surface of the object to be inspected In addition, circumferential defects frequently occur.
For example, when defects such as seizure, oxide, or refractory material constituting the mold frequently occur on the surface of the casting, such defects frequently occur.
Defects in such a situation are mostly foreign matter type defects, and these defects are generated in the melt casting process. Therefore, as shown in feedback F3 and F4 in FIG. casting conditions of the feedback is valid.
Specific examples of the feedback process to the molten metal treatment conditions include adjustment of the flow rate of the inert gas to be introduced and the rotation speed of the stirring member, the deterioration of the stirring member, and the check for gas leakage.
In addition, as a specific example of the feedback process to casting conditions, there are many cases where the amount of lubricating oil or gas supplied at the time of casting is excessive, so that the supply amount can be limited to an appropriate amount.
Claims (3)
ことを特徴とする請求項１４から請求項１６のいずれか１項に記載のアルミニウム合金水平連続鋳造棒の製造方法。 After enough periphery removing engineering, provided packaging step of packaging the aluminum alloy horizontal continuous casting rod,
The method for producing an aluminum alloy horizontal continuous cast bar according to any one of claims 14 to 16, wherein
ことを特徴とする請求項２１から請求項２３のいずれか１項に記載のアルミニウム合金水平連続鋳造棒の製造方法。 Before the packing process , after stacking aluminum alloy horizontal continuous cast bars, provided a bundling process to bind,
The method for producing an aluminum alloy horizontal continuous cast bar according to any one of claims 21 to 23, wherein:
ことを特徴とするアルミニウム合金水平連続鋳造棒の製造設備。 Used in the production method of the aluminum alloy horizontal continuous casting rod according to any one of claims 30 to claim 2,
An aluminum alloy horizontal continuous casting rod manufacturing facility characterized by that.
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| JP2004091979A JP4278052B2 (en) | 2003-03-26 | 2004-03-26 | Aluminum alloy horizontal continuous casting rod manufacturing method |
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| KR20080109938A (en) * | 2006-05-18 | 2008-12-17 | 가부시키가이샤 고베 세이코쇼 | Process for producing aluminum alloy plate and aluminum alloy plate |
| KR101151563B1 (en) * | 2007-03-30 | 2012-05-30 | 가부시키가이샤 고베 세이코쇼 | Method for producing aluminum alloy thick plate and aluminum alloy thick plate |
| KR101611720B1 (en) * | 2014-08-28 | 2016-04-14 | 주식회사 포스코 | Method for producing metal fiber |
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