Method for improving grain size of TP347HFG wrought pipe billet

• Main Authors: XIA YAN, SHI PUJI, XU LIWEI
• Format: Patent
• Language: English
• Published: 04.03.2015
• Subjects: 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

The invention relates to a method for improving grain size of a TP347HFG wrought pipe billet, belonging to the field of forging. The method is characterized by comprising the following steps: heating a forging material to 1100 DEG C above, keeping the temperature for 3-3.5 hours until the internal a...