MANUFACTURING METHOD OF TWO-PHASE STAINLESS STEEL CASTINGS AND TWO-PHASE STAINLESS STEEL CASTINGS

PROBLEM TO BE SOLVED: To provide a manufacturing method of two-phase stainless steel castings which can manufacture durable two-phase stainless steel castings with high accuracy, and to provide the durable two-phase stainless steel castings.SOLUTION: A manufacturing method or two-phase stainless ste...

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Bibliographische Detailangaben
Hauptverfasser:	HOSHIKAWA TAKANOBU, ISHIBASHI YUSUKE, IWASAKI SHUGO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a manufacturing method of two-phase stainless steel castings which can manufacture durable two-phase stainless steel castings with high accuracy, and to provide the durable two-phase stainless steel castings.SOLUTION: A manufacturing method or two-phase stainless steel castings includes: a melting step of melting raw materials of the two-phase stainless cast steel; a molten steel analysis step of analyzing the molten metal ingredients; a step of making castings by casting the molten metal into a mold; a solution heat treatment step of conducting a solution heat treatment by heating and cooling the castings; and a step of conducting a finishing process to the castings having undergone the solution heat treatment. The finishing step determines a process to be conducted depending on surface roughness of the castings.SELECTED DRAWING: Figure 8 【課題】耐久性の高い二相ステンレス鋳鋼品を高い精度で製造することができる二相ステンレス鋳鋼品製造方法及び耐久性が高い二相ステンレス鋳鋼品を提供することにある。【解決手段】二相ステンレス鋳鋼品製造方法は、二相ステンレス鋳鋼の原料を溶融する溶融ステップと、溶融した金属の成分を分析する溶鋼分析ステップと、溶融した金属を鋳型に投入し鋳物を作製するステップと、鋳物を加熱し、冷却する溶体化熱処理を行う溶体化熱処理ステップと、溶体化熱処理を行った前記鋳物に仕上げ処理を行うステップと、を有する。仕上げステップは、鋳物の表面粗さに応じて、実行する処理を決定することを特徴とする。【選択図】図８