Analysis of Residual Stress in Rolled H-beam

Yoshida, Hiroshi; Sasaki, Takako; Kondo, Nobuyuki; Tanaka, Tommo; Hashimoto, T.

doi:10.2355/tetsutohagane1955.69.3_412

Cited by 4 publications

(1 citation statement)

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“…The side roller was designed to make the side portion round during the cold rolling process. [1][2][3][4] Figure 1 shows the five-step continuous process for obtaining the lead wire. The payoff reel on the left serves to release the lead wire, which passes through the roll.…”

Section: Introductionmentioning

confidence: 99%

Optimal design of side roller to minimize the roundness errors of lead wire sides

Kim

2019

Advances in Mechanical Engineering

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This study improved the roundness error of the side portion of a lead wire produced by rolling operations. In the conventional method, the side portion is cut after rolling. As an improvement, a side roller was designed for use after flat rolling to directly form the side portion of the lead wire to reduce the roundness error. A rolling analysis of lead wires was performed using LS-DYNA, which is a simulation program capable of analyzing the dynamic behavior of the material. Finite element modeling of the lead wire was carried out, and the change of the cross section was observed after the wire rolling process. The shape of the side roller was optimized to reduce the roundness error. The angle of the side roller, the installation position, and the shape radius were selected as the design variables. PIAnO (Process Integration, Automation, and Optimization), a commercial PIDO (Process Integration and Design Optimization) tool, was used for the optimum design of the side roller, and the results confirmed that the roundness error was reduced.

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Section: Introductionmentioning

confidence: 99%

Optimal design of side roller to minimize the roundness errors of lead wire sides

Kim

2019

Advances in Mechanical Engineering

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Simulation of deformation and temperature in multi-pass H-shape rolling

Komori

2000

Journal of Materials Processing Technology

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Residual Stress Control in Drawn Bar and Wire by Heating-Cooling-Drawing Process

et al. 2021

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We investigated the drawing process with a temperature gradient in the radial direction of the bar to achieve flexible control of the residual stress in the drawn bar with only the drawing process. The obtained results are as follows: (1) A heating-cooling-drawing process was developed to generate a temperature gradient in the radial direction of the bar. The optimum cooling time was determined by heat conduction analysis. A cooling time of 0.54 s is optimal for a steel bar with a diameter of 10 mm. (2) We experimentally confirmed that the proposed method is extremely effective for controlling the residual stress in a bar or wire. (3) The residual stress decreased by increasing the heating temperature up to 400°C. Above 400°C, the control of stress was small. (4) The combination of the proposed method and extremely small reduction drawing is effective for obtaining strong compressive residual stress in the surface layer. For a 0.4% or 0.6% reduction rate of the section area, residual stress reduction of 900 MPa was obtained. ( 5) It was confirmed that residual stress is reduced when the material is cooled down after drawing by finite element analysis considering thermal strain. The mechanism of residual stress reduction by the proposed method is the loss of thermal stress due to the drawing process and the thermal contraction at the center during cooling.

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Analysis of Residual Stress in Rolled H-beam

Cited by 4 publications

References 0 publications

Optimal design of side roller to minimize the roundness errors of lead wire sides

Optimal design of side roller to minimize the roundness errors of lead wire sides

Simulation of deformation and temperature in multi-pass H-shape rolling

Residual Stress Control in Drawn Bar and Wire by Heating-Cooling-Drawing Process

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