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revised: Customer process cladding in the Welding & Cutting sector

Cladding

Change of surface properties

PROCESS DESCRIPTION

The aim of coating construction components is to create surface properties that the base material does not have. Important characteristics include:

  • Corrosion resistance
  • Wear resistance
  • Thermal or electrical resistance or conductivity
  • Optical properties

Often it is metals that are coated. Here methods are used whose principles of operation are known from joining technology, such as:

  • Soldering
  • Electric arc welding
  • Shield gas welding,
  • Plasma-powder welding

For heat sensitive or non-metallic components special processes have been developed, such as:

  • Thermal spraying
  • Vacuum-coating
  • Electro- or immersion bath-galvanisation
  • Chrome plating

revised: Application technology cladding in the Welding & Cutting sector

Cladding

Change of surface properties

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Overview of the gases for welding

WELDING GASES

MAG, MIG, TIG and forming gases

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null R744 - Introduction - 3

Safe handling of CO2 as a refrigerant R744

Handling CO2 as a refrigerant R744 requires special care, as it is a compressed gas. Correct storage and handling are crucial to prevent accidents or system failures. Measures such as the use of pressure reducers, safety valves, and pressure relief valves are necessary to ensure stable and safe operation.

 

CO2 as a refrigerant R744 and the F-Gas Regulation

The F-Gas Regulation (EU 517/2014) aims to reduce the use of refrigerants with high global warming potential (GWP). By 2030, the use of fluorinated greenhouse gases is to be reduced by up to two-thirds compared to 2014. In this context, CO2 (R744) plays a central role, as it complies with EU emission reduction requirements and is considered an environmentally friendly alternative to traditional F-gases.

Areas of application for CO2 as a refrigerant R744

CO2 is increasingly being used in various industrial and commercial applications, including:

  • Supermarkets and cold stores:
    CO2 is used as a refrigerant for cooling food and beverages in supermarkets and wholesale companies. Transcritical CO2 refrigeration systems achieve high cooling capacities while minimizing emissions.
  • Industrial cooling:
    CO2 is used to cool machinery, production processes, and large plants, particularly in the chemical, pharmaceutical, and automotive industries.
  • Mobile air conditioning systems:
    CO2 is also used in mobile air conditioning systems and vehicle air conditioning systems to maximize efficiency and sustainability in air cooling.

Conclusion: CO2 as a refrigerant R744

CO2 (R744) offers numerous advantages as a refrigerant in refrigeration and air conditioning systems. It is a natural refrigerant that is environmentally friendly, safe, and efficient. Its excellent thermodynamic properties and high availability make CO2 an ideal choice for industrial cooling and air conditioning.

The high purity and quality of CO2 (R744) are crucial for the safety and efficiency of the systems. Messer supplies CO2 R744 with a purity of 99.995% and will be happy to advise you on the optimal use of this refrigerant in your company.

For further information or offers on CO2 R744 as a refrigerant, please contact us.