Transactions of Materials and Heat Treatment

Title：Optimization of cooling process before JTS extend forging process of 12% Cr ultra-super-critical rotor ingot

Authors： LI Yan HAN Jing-tao LIU Jing WANG Hui-feng

Unit： University of Science and Techonology Beijing

KeyWords： ultra\|super\|critical JTS extend forging process temperature field effective strain

ClassificationCode：TG316

year,vol(issue):pagenumber：2011,36(2):15-19

Abstract：

The 12%Cr flow stress curves and formula were got through thermal simulation experiment. FEA method was used to analyze the temperature distribution in the forgings during the cooling process before JTS extend forging process. The temperature gradient near the surface increased with the time of cooling but decreased with the time of staying in the air. The optimal cooling method was determined according to the thermal-plastic curves. The JTS and FM extend forging process were simulated and the effective stress distribution was compared, the effective stress distribution feature of JTS extend forging process was analyzed. Compared with FM extend forging process, larger effective strain could be got inside the forgings in a large range.

Funds：

大型铸锻件制造关键技术与装备研制(2007BAF02B00)

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