Transactions of Materials and Heat Treatment

Title：FEA on nozzle forming for nuclear power main steam super pipeline

Authors： Du Yanmei Zhao Weixing Meng Jiantao Zhang Yanyan Zhou Hongchang

Unit： Hebei Focus Piping Co. Ltd.

KeyWords： nuclear power main steam super pipeline nozzle punch shape punch height friction

ClassificationCode：TG356

year,vol(issue):pagenumber：2016,41(6):44-49

Abstract：

For the difficulties in nozzle forming such as heating and extrusion in the nuclear power main steam super pipeline, the major influential factors of the nuclear power main steam super pipeline forming, namely, the shape and height of the punch, the friction and temperature drop of the material and so on, were analyzed by FEA (ABAQUS). The analysis results show that the outline of the punch directly affects the equivalent plastic strain of the material and the size of the nozzle, and the punch height and surface friction coefficient also directly affect wall thickness and height of nozzle. After optimizing the above influence factors, the extrusion test of nozzle forming was conducted. Thus, the test results show that the required nozzle can be gained by convex punch, adjusting punch height, increasing lubrication and lowering the temperature drop of the material.

Funds：

作者简介：杜艳梅（1984-），女，硕士，工程师 E-mail：yanmeidu2013@163.com

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