Which material is suitable for making ultra-low temperature electrical penetration joints?

The ultra-low temperature electrical penetration joint is a key component used to connect electrical equipment in extremely low temperature environments. This joint needs to have good insulation properties, excellent electrical conductivity and good low temperature resistance. The selection of materials suitable for making ultra-low temperature electrical penetration joints is very important, and several common materials suitable for making ultra-low temperature electrical penetration joints will be introduced below.

First, high-purity copper is a material commonly used to make ultra-low temperature electrical penetration joints. High purity copper has excellent electrical conductivity and is able to maintain low resistance at low temperatures. In addition, the coefficient of thermal expansion of high-purity copper is small, and it can maintain good stability when the temperature changes. Therefore, high-purity copper can effectively transfer current and maintain good electrical conductivity at ultra-low temperatures.

Secondly, polytetrafluoroethylene (PTFE) is an excellent insulating material, suitable for the insulation part of ultra-low temperature electrical penetration joints. PTFE has good low temperature resistance and can maintain good insulation performance at very low temperatures. PTFE material also has excellent chemical corrosion resistance and electric shock resistance, which can effectively prevent the damage of electrical penetration joints during use.

Third, ceramic material is also a material suitable for making ultra-low temperature electrical penetration joints. Ceramic materials have good insulation properties and high temperature resistance, and can maintain good electrical insulation properties in extremely low temperature environment. In addition, ceramic materials also have excellent mechanical strength and hardness, which can effectively prevent the fracture and damage of the joint during use.

In addition, alloy materials can also be used to make ultra-low temperature electrical penetration joints. Alloy materials have excellent electrical conductivity and electrical insulation properties, enabling reliable electrical connections in ultra-low temperature environments. In addition, the alloy material also has good corrosion resistance and thermal expansion coefficient matching, which can improve the stability and reliability of the joint.

In summary, high-purity copper, teflon, ceramics and alloy materials are suitable for making ultra-low temperature electrical penetration joints. When selecting materials, it is necessary to consider the required electrical properties, mechanical properties and low temperature resistance. Ensure that the selected material can meet the requirements of ultra-low temperature environment to ensure the reliability and stability of the joint.