The most important type of vacuum pump selection is the determination of the type of pump. The type of pump is mainly determined by the amount of gas, vacuum, or exhaust pressure required for operation. When the pump is operating, operation at or near the maximum vacuum pressure should be avoided. Operating in this area is not only inefficient, but also very unstable and prone to vibration and noise. For vacuum pumps with higher vacuum levels, cavitation often occurs in this area. The obvious sign of this phenomenon is noise and vibration in the pump. Cavitation can cause damage to components such as the pump body and impeller, so that the pump cannot work. In addition, the vacuum pump requires as much as possible to operate in the high-efficiency zone, that is, in the area of ​​critical vacuum or critical exhaust pressure. Let's take a look at the seven elements that need to be noted when selecting a vacuum pump 1. The ultimate pressure of the vacuum pump should meet the working pressure of the process. The ultimate pressure of the pump is usually chosen to be about one order of magnitude lower than the process requirements. 2. Each pump has a certain working pressure range. Therefore, the working point of the pump should be selected within this range, and it cannot be allowed to work for a long time outside the allowable working pressure. 3. The vacuum pump, under its working pressure, should be able to drain all the gas produced during the vacuum equipment process. 4. The vibration generated during the operation of the vacuum pump has no influence on the process and the environment. If the process is not allowed, the pump with no vibration or the anti-vibration measures should be selected. 5, to understand the gas components being pumped, the gas contains no condensable vapor, with or without particulate dust, with or without corrosion. When selecting a vacuum pump, you need to know the gas composition and select the appropriate pump for the pumped gas. If the gas contains vapors, particles, and corrosive gases, auxiliary equipment such as condensers, dust collectors, etc., should be installed on the inlet line of the pump. 6. When selecting the oil seal vacuum pump, consider the effect of the oil vapor (soot) discharged from the vacuum pump on the environment. If the environment does not allow contamination, an oil-free vacuum pump should be selected or the oil vapor vented outdoors. 7, choose the vacuum unit: When using a vacuum pump can not meet the pumping and vacuum requirements, the need for a combination of several types of pumps to complement each other to meet the process requirements. For more information, please consult China Vacuum Pump Trading Network. (/) Dot peen marking works by electromechanically striking a carbide or diamond stylus assembly against the surface of a part to be marked.For example,Dog Tag Engraver.The result is a succession of dots to create digits, text, logos, and 2D data matrix codes. Each such dot is the result of a pulsed current that runs through a solenoid, punches a magnet toward the surface, and subsequently returns the stylus to its starting position, awaiting the next pulse. Because each pulse occurs in only a fraction of a second, an entire 2D data matrix code, for example, can be completed in seconds (depending on the size).
Compressed air is not required.
Dot Peen Marking Machine,Pnematic Dot Peen Marking Machine,Pneumatic Marking Machine,Dot Markers,Dot Peen Marker,Dog Tag Engraver Wuhan HAE Technology Co., Ltd. , http://www.chinahae.com
Notable Characteristics:
Cost effective
Requires no consumables
High speed accuracy
Will mark any material (including hardened steel)
