(L) heating the tube at both ends usually have a longer cold side, and can not play the role of heating. Power Design (2) heating section to try not to exceed the limit of 10 watts / cm. As 30 cm long heating tube wetting angle, try not to exceed 300 watts of power. If the design power exceeds this limit, the heating tube surface contact angle higher standard sample load, easily oxidized steel corrosion, causing a short circuit. (3) to a temperature higher than 250 ℃ mold design, the use of heat pipe has some difficulties. I have a heating pipe temperature reaches 420 ℃, but the higher the temperature of the heating pipes forming such quality requirements, and the need to frequently check the patency of a short circuit or not. Under these conditions because the heating pipes, terminals, connected with copper, steel and other media are very susceptible to oxidation, resulting in disconnection. Therefore, the electrical transmission medium require special handling, try to avoid conducting wires exposed to the air, to extend the life of the wire. Iron core is also commonly used as a mold heating pipe, is characterized by high power per unit length (usually diameter 10mm, length 8cm specifications iron core can reach 150 watts of output power), durability, safety, good wetting angle of water droplets angle measurement instrument, easy to form short-circuit breakdown can be buried by drilling blind holes, the disadvantage is difficult to customize the design, replace them brittle, broken. Circuit Design indispensable insurance, air switch insurance policy maintained by the operation to be clean and tidy, good insulation, diligent in checking the operation of electrical failure, to prevent unnecessary danger. Buried discharge heat pipe wetting angle tester, preferably the inner tube of the same media were filled with magnesium oxide powder, in order to reduce the heat load on the heating tube surface, this method can reduce the surface oxidation of the tube, effectively extending the life of the tube . Able to do so, the mounting holes are the best heating pipes poured into magnesium oxide powder. Insulation measures to strengthen the mold can reduce heat loss of the mold, the mold will reach a predetermined temperature in a short production time and reduce energy waste. Each engineering and technical personnel on this issue has a unique solution, I only talk about my experience. Wetting angle of water droplets angle measurement, Jieyang wetting angle, ShengDing instrument provided by the Dongguan City Ding Sheng Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) strong, credible, in Dongguan, Guangdong specialized instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead ShengDing instrument and you hand into the brilliant, for a better future!