Manufacturing standards for vacuum furnaces

The manufacturing standards for vacuum furnaces mainly involve structural design, safety performance, vacuum requirements, and material selection, aiming to ensure long-term stable and safe operation of the equipment under high temperature and high vacuum conditions.

Structural and Process Standards: The design of the furnace body, furnace chamber, and heating elements must meet the requirements for high temperature resistance, thermal shock resistance, and sealing performance. Commonly used refractory materials and high-temperature alloys must possess high-temperature strength and thermal stability. Furnace body welding, flange connections, and seal installation must comply with industrial specifications to ensure that no leakage or thermal deformation occurs during long-term operation.

Vacuum and Temperature Control Standards: The vacuum system of the vacuum furnace should meet the requirements of high vacuum or ultra-high vacuum processes, typically reaching 10⁻³ Pa to 10⁻⁵ Pa, and its sealing performance must be verified through pressure rise rate testing. The temperature control system must be precise and reliable, with temperature control deviation generally controlled within ±1~3℃ to ensure uniform heating of the workpiece and good process repeatability.

Safety and Environmental Standards: Electrical safety regulations should be followed during the manufacturing process to ensure reliable grounding of the furnace body, and that the power supply, relays, and over-temperature protection devices meet standard requirements. High-temperature and vacuum operations require protective measures to prevent operator injury. Some countries or regions also require compliance with environmental emission standards to ensure that furnace materials, welding processes, and residual gas emissions do not cause pollution.