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• 10

  2022-01

  Factors Affecting Welding Temperature Field

  The factors affecting the welding temperature field can be summarized into the following main aspects. 1. The influence of heat source Different heat sources affect the temperature···

• 08

  2021-10

  Structural design requirements for pressure vessels

  The safety of pressure vessels involves all aspects of design, manufacturing, installation and use. Considering the safety and reliability of the component structure from a design ···

• 18

  2021-09

  Laser welding

  Laser beam welding is a type of fusion welding. The laser uses the principle of stimulated emission of atoms to stimulate the working material to produce a beam of high monochromat···

• 27

  2021-08

  Shape, size and surface roughness of glass sealing parts

  The size and distribution of stress in the sealing part are affected by the shape and size of the sealing part. When the stress exceeds the strength limit of the sealing material, ···

• 11

  2021-08

  Design requirements of vacuum furnace

  The vacuum furnace is mainly composed of furnace body, vacuum system, heating system, power supply, explosion-proof system, control system, etc. The end of the furnace body of the ···

• 26

  2021-07

  The production and influencing factors of thermal stress in the connection betwe···

  When ceramic and metal are connected, due to the large difference in thermal expansion coefficient, when the joint is cooled from the connection temperature to room temperature or ···

• 22

  2021-07

  Intermediate layer selection for ceramic metal connection

  In the diffusion connection of ceramics and metals, an important process measure is to use various metal intermediate layers to control the interface reaction (inhibit or change th···

• 16

  2021-07

  Several main problems in the connection of ceramics and metals

  (1) It is difficult for the solder to wet both ceramics and metals. Most of the conventional brazing filler metal can wet metal, but the ceramics and its composite materials are no···

• 27

  2021-04

  Flexible vacuum tube

  In vacuum system assembly, flexible vacuum pipe joints are used to adapt to thermal expansion or position adjustment (relative movement between parts is required), or to isolate vi···

• 27

  2021-04

  Fluorine rubber sealed ultra-high vacuum flange

  Fluorine rubber can withstand high-temperature baking at 250~300℃, and can work at 125℃ for a long time under pressure. It has a lower outgassing rate than the commonly used nitril···

• 20

  2021-04

  Where is the three-wire split vacuum connector used? Why is it designed like thi···

  The three-wire vacuum connector is a vacuum connector specially developed by Huipu Technology after analyzing the domestic and foreign markets. At present, only Huipu Technology pr···

• 19

  2021-04

  Design principles of ceramic-metal sealing structure

  (1) Matching principle of linear expansion coefficient The linear expansion coefficients of metal parts and ceramic parts in ceramic metal sealing should be consistent or close. Th···

• 24

  2021-03

  Argon arc welding in vacuum chamber

  Argon arc welding is suitable for welding various stainless steel components in ultra-high vacuum systems. It is arc welding with argon gas protection. Since the weld is protected ···

• 24

  2021-03

  Vacuum brazing

  Vacuum brazing is to heat the solder to the melting point in a vacuum state, and the molten liquid metal solder fills the gap of the metal to be soldered (referred to as the base m···

• 24

  2021-03

  Vacuum brazing process specification

  The brazing specifications of commonly used materials include brazing temperature, heating rate, brazing holding time and cooling rate. The brazing temperature should generally be ···

• 24

  2021-03

  Vacuum brazing of common metals

  The brazing of oxygen-free copper and its alloys can be carried out in a hydrogen furnace or a vacuum furnace. Commonly used solders are Ag100, Ag90Cu10, Ag72Cu28. However, gold co···

• 19

  2021-03

  Principles of Electrochemical Polishing

  Electrochemical polishing uses the polished workpiece as the anode and the insoluble metal as the cathode. The two electrodes are immersed in the electrochemical polishing tank at ···

• 19

  2021-03

  The structure of stainless steel oxide scale

  The oxide scale on the surface of stainless steel has a dense structure and strong adhesion to the substrate. It must be cleaned before the subsequent passivation, electroplating, ···

• 19

  2021-03

  The principle and use of sandblasting

  Sandblasting uses compressed air flow to spray quartz sand on the surface of stainless steel parts to clean or modify the surface. Sandblasting can be divided into dry sandblasting···

• 19

  2021-03

  Stainless steel surface polishing

  Polishing is used for pretreatment of stainless steel. The purpose is to reduce the value of surface roughness (Ra) <0.4μm, so that the surface can obtain a bright and smooth ap···