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http://dx.doi.org/10.3795/KSME-A.2015.39.1.089

The Study on Weldability of Boron Steel and Hot-Stamped Steel by Using Laser Heat Source (III) - Comparison on Laser Weldability of Boron Steel and Hot-Stamped Steel -  

Choi, So Young (Dept. of Marine Engineering, Graduate School, Korea Maritime and Ocean Univ.)
Kim, Jong Do (Division of Marine Engineering, Korea Maritime and Ocean Univ.)
Kim, Jong Su (Automotive Parts Technology Support Center, Korea Institute of Machinery & Materials)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.39, no.1, 2015 , pp. 89-94 More about this Journal
Abstract
This study was conducted to compare the laser weldability of boron steel and hot-stamped steel. In general, boron steel is used in the hot-stamping process. Hot-stamping is a method for simultaneously forming and cooling boron steel in a press die after heating it to the austenitizing temperature. Hot-stamped steel has a strength of 1500 MPa or more. Thus, in this study, the laser weldability of boron steel and thet of hot-stamped steel were investigated and compared. A continuous wave disk laser was used to produce butt and lap joints. In the butt welding, the critical cooling speed at which full penetration was obtained in the hot-stamped steel was lower than that of boron steel. In the lap welding, the joint widths were similar regardless of the welding speed when full penetration was obtained.
Keywords
Boron Steel; Hot-Stamped Steel; Laser Welding;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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