Silicon steel sheet annealing and Bluing production with the motor surface yellow, blue layer slightly off, Guiqiu solution!
Try to use low temperature open type (no gas protection), temperature 550 degrees plus or minus 10 degrees, can improve the quality of annealing
Several steps are added after annealingAnnealing - acid washing (hydrochloric acid) - clear water rinse - clean boiling water (ensure no rust or water traces on the surface)You can test it first to see if it works and then produce it in large quantitiesThe yellow substance should be ferrous oxide
Protective atmosphere annealing or vacuum annealing is recommended
