The Effect and Optimization of Annealing Furnace Control on Dezincification of High Strength Steel
A study was conducted on the batch stamping zinc removal defects in hot-dip high-strength steel,the metal composition of the zinc removal area was analyzed and the effect of annealing parameter values on zinc removal defects was studied.It was found that the reason for stamping zinc removal is that the peroxide layer is too thick,and the iron oxide layer is not completely reduced in the annealing furnace,resulting in the coating falling off from the iron oxide layer during the stamping process after galvanizing.By optimizing the humidification control method,adjusting the process parameters of the annealing furnace,optimizing the dew point value of humidification in the annealing furnace,and improving the internal stability of the furnace nose during welding,the occurrence rate of zinc removal defects in high-strength steel stamping has been reduced from 1.2％to 0.4％,avoiding the occurrence of batch quality accidents.
high-strength steeldezincificationhumidificationperoxideannealing temperature
NETL
NSTL
万方数据
