Analysis and Controlling of the Cracks in the Thickness Center of Medium Plate
ZHU Guihe
WAN Youtang
CAO Luqi
PENG Haihong
Abstract：Aiming at the problem of low detection qualification rate, the disqualification plate in flaw detection was analyzed. The cause is the existence of micro crack aggregated distribution in the plate thickness center. Through the investigation of main factors on the micro crack and the contrast test, the results showed that the micro cracks is not only concerned with billet segregation, MnS inclusion, pass reduction rate, but hydrogen content in steel is one of the most important factors. By taking measures to reduce the content of hydrogen in steel, the H content in steel is greatly reduced, the flaw detection qualified rate is increased from 95%to 98%.
Keywords：medium plateflaw detectionmicro crackhydrogen content
Publication Date：2014-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 22-24,27 )