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Ultra-low temperature deep freezer for industrial metal parts

Industrial products sometimes need to be pre-treated with ultra-low temperature deep freezers during the pre-assembly process to improve the performance of the material or ensure the smooth progress of the subsequent assembly process. Ultra-low temperature deep cryogenic treatment is a process that exposes materials or parts to extremely low temperatures, and the temperature range commonly used is -80°C to -196°C.

The following is the application of ultra-low temperature deep freezers in the pre-assembly treatment of industrial products and related technical details: Application background Ultra-low temperature deep cryogenic treatment can improve the microstructure of the material, enhance its mechanical properties, reduce residual stress, and improve dimensional stability. This treatment method is used in many industries, including aerospace, precision machinery, mold manufacturing, automobile manufacturing, etc.

Application Purpose

  1. Improve material properties:
  • Improve hardness and wear resistance: Cryogenic treatment can transform the residual austenite in the material into martensite, thereby improving hardness and wear resistance.
  • Reduce residual stress: Cryogenic treatment can reduce the residual stress inside the material and improve dimensional stability.

  1. Improve assembly quality:
  • Dimensional stability: Cryogenic treatment can reduce the thermal expansion coefficient of the material and improve the dimensional stability of the parts during assembly.
  • Reduce deformation: Cryogenic treatment can reduce the deformation of parts during subsequent processing or assembly.

  1. Optimize material microstructure:
  • Refine grains: Cryogenic treatment can promote the refinement of grains in the material and improve the mechanical properties of the material.

Technical features

  1. Temperature control:
  • Extremely low temperature range: Ultra-low temperature deep freezers can usually reach a temperature range of -80°C to -196°C.
  • Precise control: The deep freezer needs to have precise temperature control capabilities to ensure that the material is processed at a specific temperature.

  1. Cooling medium:
  • Liquid nitrogen cooling: Liquid nitrogen is the most commonly used cooling medium and can provide extremely low temperatures.
  • Refrigerant cooling: Some deep freezers also use special refrigerants to achieve low-temperature cooling.

  1. Temperature uniformity:
  • Uniform cooling: Deep freezers need to ensure uniform internal temperature distribution to avoid local overcooling or overheating.

  1. Insulation performance:
  • Insulation layer: Deep freezers are usually equipped with efficient insulation layers to reduce heat loss and keep the internal temperature stable.

Process flow

Loading: • Place the material or parts to be processed in the deep freezer.

Cooling: • The deep freezer starts to cool down until the set temperature is reached.

Insulation: • Insulate at the set low temperature for a period of time to ensure that the material is fully cooled.

Heating: • Slowly heat up to room temperature to avoid stress in the material during the heating process.

Unloading: • Take the processed material or parts out of the deep freezer.

Summary The application of ultra-low temperature deep freezers in the pre-assembly treatment of industrial products can significantly improve the performance of materials, improve assembly quality and product reliability. Through precise temperature control, uniform cooling and insulation, as well as automated control and safety protection measures, the efficiency and safety of the deep cryogenic treatment process are ensured. When selecting and using ultra-low temperature deep freezers, it is necessary to make reasonable choices based on specific process requirements and technical parameters to meet specific application needs.

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