430 stainless steel is one of the earliest ferrite stainless steel, which is mainly used in automobile, household appliances and other industries.The 430 stainless steel plate after cold rolling contains a lot of defects which cannot be used directly. It needs to be softened by recrystallization annealing.At present the annealing of 430 ferritic stainless steel cold-rolled plate is divided into two kinds: low temperature cover annealing and high temperature continuous annealing.High temperature continuous annealing has become the main cold rolled sheet annealing process due to low energy consumption and short production cycle.However, due to the high annealing temperature in the continuous annealing process, the whole annealing process needs to be precisely controlled.