1. The pump and its surroundings should always be kept clean. 2. During the operation of the pump, the amount of oil in the tank must not be lower than the center of the oil standard. 3. Different types and brands of vacuum pump oil cannot be mixed. 4. The temperature rise of the pump during use must not exceed 70°C. 5. When the new pump is used for about 100 hours, the oil should be changed 1-2 times. After the oil to be replaced is no longer found to contain ferrous metal powder, the oil change period may be extended. The oil change period shall be determined according to the specification and the actual situation. 6. The new pump and the repaired pump should be run for the first time 4 - 6 h to check whether the pump meets the requirements for use. 7. After the pump has been used for a long time, it will be in the range of 2-3 years, and the ultimate vacuum level will be reduced. An overhaul should be performed. At the same time, systems, pipes, valves and motors should also be cleaned and overhauled. 8. The pump is in use, due to a special accident such as a system damage, or when the air intake suddenly exposes the atmosphere. The pump should be stopped as soon as possible. And cut off the vacuum piping connected to the system (off low vacuum valve or vacuum clamp) to prevent oil injection and pollute the work site. 9. All the parts on the pump. It is not absolutely necessary. Do not disassemble it yourself. 10. When the pump is not in use, use a rubber plug (cap) to plug the air inlet so that dirt and hard objects do not fall into the pump. 11. Always pay attention to developments in vacuum technology and introduce new technologies and materials (such as new pump oils) as early as possible to improve the performance of the original system. 12. The above points can be set out according to the specific circumstances, the corresponding operating procedures. Strictly implemented. More information in China vacuum pump trading network
Stearic acid is widely used in the manufacture of PVC plastic pipes, plates, profiles, and films. It is a PVC heat Stabilizer with good lubricity and good light and heat stability. In plastic PVC pipes, stearic acid helps prevent "coking" during processing. It is an effective thermal stabilizer added in the processing of PVC films, and can prevent finished films caused by excessive exposure to sulfides.
Mainly used to produce stearates: sodium stearate, magnesium stearate, calcium stearate, lead stearate, aluminum stearate, cadmium stearate, iron stearate, potassium stearate. Stearic Acid,Industrial Stearic Acid,Chemical Stearic Acid,Agent Stearic Acid Henan Shunbang Chemical Industry CO.,Ltd , https://www.suspensionpvc.com
Widely used to make cosmetics, plastic cold-resistant plasticizers, mold release agents, stabilizers, surfactants, rubber vulcanization accelerators, waterproofing agents, polishing agents, metal soaps, metal mineral flotation agents, softeners, pharmaceuticals and others Organic chemicals.
In addition, it can also be used as a solvent for oil-soluble pigments, a crayon slip agent, a wax paper polish, and an emulsifier for glyceryl stearate.
The product is used as a lubricant, defoamer and food additives in the food industry as a raw material for glyceryl stearate, sorbitan stearate, and sucrose esters. Used as the raw material of additives and the raw material of daily chemical products.
Stearic acid is widely used in the manufacture of PVC plastic pipes, plates, profiles and films. It is a PVC heat stabilizer with good lubricity and good light and heat stabilization. In plastic PVC pipes, stearic acid helps prevent "scorching" during processing. It is an effective heat stabilizer added in the processing of PVC film, and it can also prevent the finished film caused by exposure to sulfide. Discoloration.