NDLI: Material flow analysis and extrusion die modifications for an irregular and multitooth aluminum alloy radiator

Content Provider	Springer Nature Link
Author	Dong, Yuanyuan Zhang, Cunsheng Luo, Wenfeng Yang, Shan Zhao, Guoqun
Copyright Year	2016
Abstract	Material flow uniformity in a die cavity is the key to extrude sound aluminum alloy radiators. However, it is generally difficult to control material flow due to their geometry features, such as complex cross section, multiple teeth, etc. In this work, for an irregular and multitooth aluminum alloy radiator, the initial extrusion die is firstly designed. Numerical simulation and experimental observation both show that the extruded radiator could not meet the size and shape requirements due to severe twist deformation in the cross section. Then, four different die modifications (resizing the porthole structure, chamfering the mandrel support, adding baffle plates, and adjusting bearing lengths) are taken to improve material flow uniformity during the extrusion process. Through a series of die modifications, the velocity difference in the cross section of the radiator is reduced from 34.9 mm/s with the initial extrusion die to 8.3 mm/s with the modified one. The standard deviation of the velocity field in the cross section decreases from 10.7 to 3.3 mm/s, and the velocity uniformity is improved greatly. With the modified extrusion die, a sound radiator is extruded with the desired size and geometry. Finally, the extrusion die modification rules are summarized for this kind of radiators.
Starting Page	1927
Ending Page	1935
Page Count	9
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	85
Issue Number	5-8
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2016-04-01
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aluminum alloy radiator Porthole extrusion die Material flow uniformity Die modification Industrial and Production Engineering Production Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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