Paper Title:
Development of Seamless Pipes with Improved Strength-Toughness Combination for Hydraulic Cylinders
  Abstract

Steel pipes for hydraulic cylinders have to offer high strength levels and good toughness. A minimum value of 27 J at – 20 °C is typically requested. In this work, a comprehensive experimental activity based on both laboratory tests and industrial trials was performed in order to investigate the benefits related to the development of multi-phase microstructures in seamless pipes for hydraulic cylinders. The effect of these microstructures on strength and toughness were analyzed. Charpy V-notch (CVN) impact tests showed that toughness increases monotonically with the increase of the intercritical temperature, i.e. when the carbon content of the newly formed austenite is reduced. Industrial trials were performed on tubes applying a proper inter-critical quenching. The product after cold drawing and stress relieving achieved high yield strength values and showed an excellent toughness, even at – 40°C, in both the transverse and longitudinal directions.

  Info
Periodical
Materials Science Forum (Volumes 539-543)
Main Theme
Edited by
T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran
Pages
4345-4350
DOI
10.4028/www.scientific.net/MSF.539-543.4345
Citation
C. Guarnaschelli, P. Folgarait, E. Paravicini Bagliani, R. Demarchi, H. Desimone, "Development of Seamless Pipes with Improved Strength-Toughness Combination for Hydraulic Cylinders", Materials Science Forum, Vols. 539-543, pp. 4345-4350, 2007
Online since
March 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Liang Yun Lan, Chun Lin Qiu, De Wen Zhao
Abstract:The nucleation and crystallographic characteristics of acicular ferrite in the as-rolled and tempered steel were investigated by using an...
337
Authors: Chun Lin Qiu, Liang Yun Lan, De Wen Zhao, Xiu Hua Gao, Jing Lin Wen
Chapter 18: Steels
Abstract:Thermo-mechanical process followed by accelerated cooling and high temperature tempering was applied to investigate the microstructure...
2265
Authors: Xian Zhong Zhang, Qing Feng Chen, Yu Zhang Xiong, Zhu Tao Xu
Chapter 3: Iron and Steel
Abstract:A failure investigation has been conducted on high carbon microalloyed steel used in engine fracture splitting con-rods. The fracture...
561
Authors: Xian Jun Wang, Qing Feng Ding, Wen Bin Liu
Chapter 3: Steel and Iron Technology
Abstract:Influence of different heat treatment on microstructure and mechanical properties of mining machinery steel Plate containing molybdenum...
342
Authors: Dong Ming Duan, Run Wu, Meng Xia Tang, Yong Bu, Xiao Chen
Chapter 1: Advanced Materials Engineering, Technologies and Processing
Abstract:Steel with low yield ratio (YR0.75) and high heat input welding was made by combining Zr, Ti microalloying. Its microstructure investigated...
69