Deformation Behavior and Experiments on a Light Alloy Seamless Tube via a Tandem Skew Rolling Process

Feilong Mao,Jianxun Chen,Fujie Wang,Jianhua Hu,Yuanhua Shuang

doi:10.3390/met10010059

Feilong Mao, Jianxun Chen + Show 3 more

Open Access

https://doi.org/10.3390/met10010059

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Abstract

As a process for producing seamless tubes, the tandem skew rolling (TSR) process was proposed. In order to study deformation characteristics and mechanism on tubes obtained by the TSR process, a numerical simulation of the process was analyzed using Deform-3D software. Simulation results demonstrated the distribution of stress, strain, velocity, and temperature of a seamless tube in the stable stage during the TSR process. Actual experiments of carbon steel 1045, high strength steel 42CrMo, and magnesium alloy AZ31 were carried out in a TSR testing mill. The results demonstrated that the TSR process is qualified for producing tubes of high quality, with an accuracy of ±0.2 mm in wall thickness and ±0.35 mm in diameter. This process is suitable for manufacturing seamless tubes that are difficult to deform or that have been deformed in a narrow range of temperature.

Highlights

The steel industry is in a post-industrial era of steel, whose theme is “green manufacture, make green.” The short process is one way to meet the requirement for industrial development.The tandem skew rolling (TSR) process is an ingenious metal-formed technique for producing seamless steel tubes that can achieve continuous skew rolling by combining the piercing section with the rolling section [1,2]
The TSR process has been investigated for many years
TSR process presented in Figure 5, from which two rollers are omitted to billet improve readability

Summary

Introduction

The tandem skew rolling (TSR) process is an ingenious metal-formed technique for producing seamless steel tubes that can achieve continuous skew rolling by combining the piercing section with the rolling section [1,2]. Compared with the conventional process of manufacturing seamless steel tubes, a three-step forming process of piercing, rolling, and reducing, the TSR process is a shorter, two-step forming process. The TSR process has been investigated for many years. To study the interstand tension in the tandem process, a tension testing device was developed and used with the testing mill, which reflected the changes in the stress of billet [7]. How the process parameters affected the rolling force and the dimensional precision of the tubes was investigated [8].

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