04-07-2023 дата публикации
Номер: CN116377188A
Автор:
TIAN XIANGXING,
HU HUADONG,
LI HONGCUI,
LIU PEIXING,
WANG LE,
LIU WANCHUN,
XU GUOJUN,
CHEN QINGJUN,
ZHA KAI,
LIU CHUANG,
LIU YAOYAO
Принадлежит:
The invention relates to the technical field of steel rolling, in particular to a method for eliminating the plating leakage defect of high-strength steel with the Mn content being 1.5% or above and application of the high-strength steel. The method comprises the following specific steps: carrying out heating, hot rolling, acid rolling, continuous annealing and galvanization on a smelted steel billet; the continuous annealing and galvanizing process comprises the following steps of: preheating the strip steel subjected to acid rolling in a continuous annealing furnace, then feeding the strip steel into an oxidizing chamber, and adjusting the dew point of a pre-oxidizing section to be 30 DEG C below zero to 8 DEG C below zero according to the Mn content and thickness of the strip steel; and then heating, soaking, slow cooling and rapid cooling are conducted, then the materials enter a zinc pot to be galvanized, the mass fraction of Al in zinc liquid in the zinc pot is 0.20%-0.25%, and the ...
Подробнее
