Matters described using silicon carbide

Because use of silicon carbide, high temperature, high temperature, anti-oxidation, corrosion resistance, heat up fast, long life, high temperature deformation, easy installation and maintenance features. Good chemical stability. If the power supply system with automated matching can get an accurate constant temperature, but also according to the actual needs of the production process according to curve the thermostat. Now widely used in national defense, machinery, metallurgy, lightweight, ceramics, semiconductors, laboratory analysis, scientific research and other areas, for a variety of electric kiln furnace electric heating element. To test each silicon carbide heating element is good work, power clamp meter tests available individually measured current. In the same area a voltage equal to the current requirements under similar deviation does not exceed 10%, if the individual current is too small to explain the resistance. If the current is too small, not too much resistance is poor contact pin press. If there is no current may be silicon carbide heating element has been broken, should further examine the replacement. Crack easily when wet silicon carbide, GD rod contacts easily broken after damp damage, therefore, silicon carbide in the store, the installation process should pay attention to moisture, so as not to affect their life. In order to ensure uniformity of furnace temperature and rods bear the load before installation to be with the group, each silicon carbide resistance deviation does not exceed 10%. Silicon carbide hard and brittle,agricultural sprayer in the handling, unpacking and installation, maintenance when things do not care to avoid damage. Power to run an electric furnace at the beginning, to gradually slow step, can not be a plus full load, otherwise they will be the impact of current is too large, resulting in damage to silicon carbide.

By adjusting the addition of silicon carbide components electrical load, reducing the surface load density. If a smaller load and low surface load density, kiln temperature is high, you can maintain a fairly long life, either by changing the silicon carbide component installation count, or change the component specifications to regulate heat size of the surface to achieve. Surface load density and inversely proportional to temperature furnace, the furnace temperature is higher, the smaller the permissible surface load density; overload will cause decomposition of silicon carbide heating element overheated surfaces off, burning. To ensure the component life,portable sprayers should allow the heating element in the overload condition, the general control its value 6 ~ 8W/cm2. Non-silicon carbide overload. If for some reason stick breaks or discover uneven bars fever, localized phenomenon was incandescent or dark a period of time, indicating that aging is inconsistent rods, a section of resistance that much difference, should be shutdown for maintenance rods, replace all the best bars . Such as replacement of some of the new rod or rods when the new single from the new and used rod rod resistor resistor matching inappropriate, leading to unbalanced load, temperature uniformity. Therefore, due to large differences in resistance level rod temperature difference is large, will seriously affect the life.