For producing carbon-ceramic linear resistor disc with stable performance

the mixing process in the manufacturing process of resistor disc is systematically studied. Firstly

the way of adding carbon black is compared

and then the mixing time and material water ratio of carbon black and clay materials are systematically studied. The influence of the mixing time and material water ratio on the performance of resistor disc is obtained and the excellent parameters of mixing process are finally determined. The experimental results show that the dispersion and ball-milling of the carbon black and then mixture with clay is beneficial to reduce the resistance dispersion. With the increase of mixing time between the carbon black and clay

the resistivity of resistance shows the law of first decrease and then increases. The temperature coefficient of resistance decreases

with the increase of test temperature

decreases firstly and then increase. With comprehensive consideration

the best mixing process for this recipe is the step-by-step mixing method. The grinding ball is made of ?6 zirconium ball

the carbon black and dispersant are dispersed in advance for 24 h

the material water ratio after adding clay is 1:2.75 and the optimal mixing time is 2 h.