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• 29

  2021-11

  Characteristics of vacuum brazing

  Vacuum brazing has been widely used in the field of vacuum cryogenic technology, in aerospace, nuclear industry, and electronic devices. It is inseparable from its unique welding a···

• 07

  2021-09

  Selection of temperature and time during baking and degassing

  In all high vacuum systems, especially in the application of ultra-high vacuum systems, it is very important to release and exclude gas from the materials constituting the vacuum s···

• 05

  2021-08

  The influence of gas type on vacuum measurement

  (1) The influence of gas type on measurement readings. For direct measurement vacuum gauges such as elastic element vacuum gauges and capacitive thin film vacuum gauges, the measur···

• 01

  2021-07

  Classification of vacuum drying equipment

  There are many types of vacuum drying equipment, and most atmospheric drying equipment that can seal the drying chamber can achieve vacuum drying. The classification method for vac···

• 28

  2021-06

  Heating source classification of vacuum smelting equipment

  Vacuum smelting equipment can be divided into non-ferrous metal vacuum smelting equipment and ferrous metal vacuum smelting equipment according to the types of metal materials to b···

• 24

  2021-06

  Breakdown voltage and Paschen's law

  The conditions for self-sustained discharge are: After the discharge changes from non-self-sustaining to self-sustaining, not only the characteristics of the discharge undergo a qu···

• 18

  2021-06

  Vacuum evaporation

  When heating metal in a vacuum, at low temperatures, the moisture in the furnace and the nitrogen, oxygen and carbon monoxide in the air, especially the grease and other impurities···

• 02

  2021-06

  Vacuum degassing of materials

  For general vacuum equipment, the venting of materials is the most important source of gas in the vacuum system. Therefore, the purpose of vacuum degassing is to remove as much of ···

• 17

  2021-05

  Graphite heating element in vacuum furnace

  Many components of the vacuum resistance furnace can be made of graphite, of which heating elements and reflective screens are the most widely used. In the past, heating elements o···

• 17

  2021-05

  Overview of high temperature venting

  Except in individual cases, material outgassing is the main source of gas for high vacuum and ultra-high vacuum systems and sealed electric vacuum devices. With the outgassing of m···

• 10

  2021-05

  Vacuum heat treatment technology

  The rise and rapid development of vacuum heat treatment technology, on the one hand, stems from the needs of industrial technology development, and on the other hand, because vacuu···

• 08

  2021-05

  Design requirements for vacuum vessels

  The content and requirements of the overall design of the vacuum vessel are as follows. ①Determine the vacuum range in the vacuum container. According to the standard, the degree o···

• 26

  2021-04

  Overview of cryopumps

  The low-temperature surface placed in the vacuum container has the function of pumping air. This kind of pump that uses the low-temperature surface to condense and adsorb gas to ac···

• 14

  2021-04

  Gas composition in the vacuum chamber

  (1) Atmosphere in the vacuum chamber (2) The surface degassing in the vacuum chamber is also called surface desorption gas. The degassing amount is related to factors such as mater···

• 09

  2021-04

  Why does the vacuum connector suddenly discharge and spark when it is used?

  Vacuum connectors, also called vacuum electrodes, are used for power supply or signal transmission in a vacuum chamber, and are an indispensable basic device for vacuum equipment o···

• 01

  2021-04

  Problems to be considered in the design of vacuum resistance furnace

  The original conditions of vacuum resistance furnace design and issues to be considered: First, determine the furnace design scheme according to the user's requirements for fur···

• 31

  2021-03

  Gas discharge phenomenon

  Different working conditions will produce different gas discharge phenomena and have different discharge properties. When studying the phenomenon of gas discharge, the discharge is···

• 30

  2021-03

  Vacuum insulation

  The purpose of vacuum insulation is to eliminate gas convection heat exchange, reduce gas heat conduction and heat exchange, and reduce radiation heat exchange. There are three mai···

• 29

  2021-03

  The working principle of intermittent exhaust

  In obtaining the vacuum of the cryogenic container, the pumping is usually carried out continuously. The study found that continuous pumping for a long time has no obvious effect o···

• 28

  2021-03

  Cleaning treatment of electric vacuum process

  Since various pollutions can deteriorate the quality of the electric vacuum device and affect the service life and reliability, the electric vacuum process has particularity. Gener···