Study on Investment Casting Technology and Machining Process of Integral Nozzle Ring
Author of the article:DING Yuegang;YAN Xiao;HOU Tingting;DING Yueling
Author's Workplace：Datong North Tianli Turbocharging Technology Co.,Ltd.,Datong 037036,China;Shanxi Diesel Engine Industry Co.,Ltd,Datong 037036,China
Key Words：turbocharger integral nozzle ring split wax mold machining
Abstract：Due to the difficulty of integral demoulding after integral nozzle annular investment casting,a split mold of the integral nozzle ring was designed by CAD/CAM,the integral casting technology of the cantilever thin blade nozzle ring K213 superalloy was developed,and the processing method of the refractory materials of the superalloy was studied.The results show that there are no obvious casting defects in the nozzle ring castings prepared by the split die,and the qualified rate reaches 70%.Reasonable selection of cutting parameters and cutting tools of nozzle ring can ensure surface machining quality and dimensional accuracy,improve production efficiency and reduce cost.
