If the vacuum pump is corrosive gas inhalation, chemical reaction with the oil, corrosion pump parts. Vacuum pump suction air often contains water vapor condensate, causing the vacuum pump oil emulsion and metal corrosion, it requires the vacuum pump has good corrosion resistance and anti-emulsification. Very low vapor pressure is the most important performance of the vacuum pump oil, the vacuum pump requires a high degree of vacuum, the general paraffin-based narrow cut lubricant, for the diffusion pump, you can also use very low vapor pressure silicone oil or other synthetic oil. Appropriate viscosity and good viscosity-temperature properties. Vacuum pump chamber volume changes continuously evolved to form the role of exhaust, lubricating oil should have the appropriate viscosity and viscosity-temperature characteristics. Good thermal oxidation stability. Vacuum pumps continue to develop at a high speed. Due to the high friction between the vanes and the pump body, the oil temperature is increased, and the oil is easily oxidized and decomposed. In particular, the diffusion pump often operates under a very high temperature environment and increases the vapor pressure in the system. Decreased vacuum, vacuum pump oil is therefore required to have good thermal oxidation stability. In order to reach the technological index of different products, work efficiency and equipment working life requirement, different vacuum sections need to choose different vacuum system dispositions. For optimal configuration, the following elements should be considered when choosing a vacuum pump: Determine the working range of the vacuum pump: First, the vacuum required to determine each process must be checked. Because each process has its own range of vacuum degree of adaptation, we must carefully study to determine. Determine the ultimate vacuum of the vacuum pump: Check the vacuum level of the vacuum pump system based on the vacuum required by the process, since the ultimate vacuum of the system determines the optimum working vacuum of the system. In general, the ultimate vacuum of the system is 20% lower than the working vacuum of the system and 50% lower than the ultimate vacuum of the foreline pump. Depressing the cover, the panel exhaust (vacuum) indicator light. Vacuum pump began to smoke, the lid is automatically sucked, vacuum knob can be adjusted according to packaging requirements of high and low vacuum, adjust, depending on the scale from low to high, To be small. When the exhaust reaches the set time (ie, the required degree of vacuum), that is, the end of the exhaust, exhaust indicator light goes out, the indicator light is on, indicating the start of inflation. Inflation knob to adjust the length of inflation (ie, how much inflation ), The same way as in. If you do not need to inflate the power switch to the vacuum position, the program automatically into the vacuum package, the inflatable indicator goes out. Aspiration or inflation is complete, the indicator light goes out, the heat seal indicator light, that is, into the sealing process, the panel has a heat sealing time and temperature adjustment knob to accommodate different thickness of the material, adjust the time and temperature, the swings range To be small, to prevent a sudden increase in heat sealing temperature, burn heat sealing accessories.
Continuous basalt fiber (abbr. CBF) is a continuous fiber made of natural volcanic extrusive rock as the exclusive raw material. After melting at 1450-1500℃, continuous basalt fiber is manufactured by special technology. Basalt fiber is high performance non-metallic inorganic fiber, which has unique excellent properties in tensile strength, high and low temperature resistance, corrosion resistance, heat insulation, sound insulation, flame retardant, chemical resistance and electrical insulation.
basalt fiber,CBF fiber; short cut basalt fiber,basalt fiber to cement concrete; basalt fiber for mortar
Shanghai Na Long Tech Co., Ltd , https://www.na-long.com