Stopper Pipe in Silicon Nitride
● Maintenance-free and Ionger life
Silicon nitride is unlike cast iron and old ceramics, inert against molten aluminum. So, it ensures longer life. For example, with minimum maintenance our silicon nitride stalk tubes have a record of being used for two to three years. Cleaning can be done on silicon nitride.
● Contamination free
While iron contamination from the parts made of conventional material is quality concern, silicon nitride is different. It hardly reacts with molten aluminum and will help our customers to make high quality die casting parts.
● Light weight and easy handling
Silicon nitride keeps its original strength up to 800°C.Its corrosion resistance and excellent strength characteristics permit a reIative thin wall thickness and it makes handling easy.
● Less adhesion of molten metal
Because of covalent binding ceramics, silicon nitride has low wettability against molten metal and does not require coating.
● Resistance to thermal shock and mechanical stress
Initial preheating is required on virgin components. Once this has been performed,you can begin to realize better reliability than conventional ceramics. The high reliability is due to the mechanical strength and thermal shock resistance of silicon nitride.
● Temperature stability
Silicon nitride is an insulative materiaI. Therefore, It has low heat conduction. Its low specific heat allows minimum heat loss. This aides in more accurate temperature measurements for our thermocouple protection tube application, and facilitates molten metal transfer in our stalk tube applications. This advantage can reduce temperature of molten aluminum and overall energy costs.
