Transactions of Materials and Heat Treatment

Title：Simulation design of rapid precision forming die for pipe end

Authors： Li Xiaoguang Xu Shimin Sun Dengyue

Unit： Yanshan University

KeyWords： cold forming die pipe end simulation

ClassificationCode：

year,vol(issue):pagenumber：2016,41(1):101-106

Abstract：

A traditional way of manufacturing water pipe in the engine by the lathe is of low precision, poor surface quality and low productivity. The cylindrical pipe occurs local symmetric buckling under axial load. Based on this principle, the pipe end was formed into the desired flared nozzle by the die. However, when the pipe was released from the die, springback occured to change the formed sizes and affected the forming accuracy due to the residual stress. Moreover,the die life was shortened by frictions in the forming process, and the manufacturing tolerances of the die was suggested to choose suitably. Considering the above two factors,the suitable depth of the upper die was 3.60 mm, and the appropriate upper and lower deviation of the die size was determined at the same time. In result, the die is manufactured, and the pipe end is formed as the required shape and qualified precision.

Funds：

河北省自然科学基金资助项目（E2012203008）

李晓广（1990-），男，硕士研究生

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