Study of Intrusion Bending for Steel Tubes with Thin Wall Thickness

In regard to light-weight structural members for automobiles, attention to hydroforming has been increasing. Intrusion-bending method is well suited to the preliminary bending of hydroformed structural members of automobiles, because straight tubes can be bent into three-dimensional forms by this ne...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials engineering and performance 2008-06, Vol.17 (3), p.376-381
Main Authors: Naoi, Hisashi, Kitakami, Naoki, Mizumura, Masaaki, Kuriyama, Yukihisa
Format: Article
Language:English
Subjects:
Automobiles
Automotive components
Automotive engineering
Bending
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Materials Science
Quality Control
Reliability
Safety and Risk
Structural members
Structural steels
Tribology
Tubes
Wall thickness
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In regard to light-weight structural members for automobiles, attention to hydroforming has been increasing. Intrusion-bending method is well suited to the preliminary bending of hydroformed structural members of automobiles, because straight tubes can be bent into three-dimensional forms by this new method. However, in the case of tubes with a thin wall thickness, wrinkling remains a problem. In this report, application of intrusion bending method to tubes with extremely low ratios of wall thickness to outer diameter (from 1.2 to 1.9%), and whose steel grades are SSPDX, SAFC440R, and SAFC590T was investigated. A summary of this study is as follows. Effects of steel grades and wall thickness ratios on wrinkle formation, eccentricity, and ovality are studied. Relationships between wrinkle generation and gyro movement are investigated.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-008-9223-7