METHOD OF DETERMINING THE SINTERING TEMPERATURE OF FERRITE ARTICLES Russian patent published in 1995 - IPC

FIELD: metallurgy. SUBSTANCE: in order to enhance the output of acceptable ferrite articles according to the quality index Y after sintering, the method of exact determination of the sintering temperature is proposed. By this method three representative samples are chosen from the lot of pressed ferrite articles. They are sintered at the temperatures t₁, t₂, t₃, connected by the relationship t₂=0,5(t₁+t₃).. The quality index is checked on the sintered articles of each sample. Its arithmetical average is determined. Then the optimum sintering temperature of the whole lot of articles is calculated. The design formula is based on the condition of the normal distribution of the quality index in lots of articles. EFFECT: enhanced yield of acceptable articles after sintering: of 0,76% for ferrite 6C41, of 8% for ferrite 105П and of 5% for ferrite 28CA50.