The cleaning principle of vacuum plasma cleaning machine is introduced

• Categories:Industry News
• Author:plasma cleaning machine-surface treatment equipment-CRF plasma machine-Sing Fung Intelligent Manufacturing
• Origin:
• Time of issue:2021-01-19
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(Summary description)Vacuum plasma cleaning machine can be widely used for surface activation modification of materials to improve adhesion, etc., the following introduction to the whole cleaning principle of vacuum plasma cleaning machine: 1) The cleaned workpiece is sent into the vacuum plasma cleaning machine chamber and fixed, the operating device is started and the exhaust is started, so that the vacuum degree of the vacuum chamber reaches the standard 10Pa, and the usual discharge time takes about a few minutes. 2) The gas used for plasma cleaning is introduced into the vacuum chamber, and the pressure in the chamber is kept stable. According to different cleaning materials, oxygen, argon, hydrogen, nitrogen, carbon tetrafluoride and other gases can be used respectively. 3) High-frequency voltage is applied between electrode and grounding equipment in vacuum chamber, so that the gas is broken down, and glow discharge occurs, and plasma is generated. The plasma generated in vacuum chamber completely covers the workpiece to be processed, and cleaning operation begins. Generally, the duration of cleaning treatment varies from tens of seconds to a few minutes. 4) After cleaning, cut off the power supply and discharge the gas and gasified dirt through the vacuum pump. Several common vacuum plasma cleaning machine processing materials: 1, activated metal: Although the metal is activated, the activation process is very unstable, so the effective time is short. If the metal is activated, the subsequent processing (bonding, painting, etc.) must be done within minutes or hours, otherwise the surface will soon combine with dirt in the surrounding air. 2. Activation and modification of plastic: Plastics, such as polypropylene or PE, are of a poleless structure. This means that the plastics must be pretreated before they can be painted and bonded. Usually dry oil-free compressed air is used as the process gas. 3. Glass and ceramics can also be activated: Glass and ceramic bottles have similar properties to metals and have a short effective time. Compressed air is usually used as the process gas. Validation of the effect of the vacuum plasma cleaning machine treated and untreated workpiece can be immersed in water (polar solution), the activation effect is extremely impressive. For untreated parts, liquid droplets of normal shape are formed. The treated part of the treated part will be completely wet with water.