Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Development of a New Light-Weight Suspension Coil Spring
Author: Sakakebara Kusakari Nakano Yasuda Sugimoto Watanab
Source: p 27-36
Publication year 1993
Document number: 1993114
Number of pages: 10
Abstract:
This newly developed helical spring can be used at a stress level up to 1300 MPa. The material is composed of Fe-C-Si-Mn-Ni-Cr-Mo-V alloy. Its strength-toughness balance
was greatly superior to that of other spring steels.
To improve the fatigue strength at a higher stress level, decarburization at the surface upon austenitizing was severely controlled, applying induction heating. Then, a
special shot peening process, introduced for the first time, was applied to obtain a surface of over 1000 MPa. The spring was first applied to a 1992 TOYOTA model car. Plan
are to increase the use since the spring material achieves a weight reduction of at least 30% and, possibly, 35 to 40%.
Download full text pdf file
www.shotpeener.com
This page last revised: 04/24/2008