What is the general air pressure in the factory?

Industry Practice Note on Factory Air Pressure Standards

in industrial production, compressed air is used as a common power source, and its pressure setting needs to take into account equipment performance, process requirements and safety specifications. The following is a detailed analysis of the common range and setting basis of factory air pressure from the perspective of technical principles and industry practice.

Common range of air pressure in 1. factory

1. basic Standard Scope
   • conventional Industrial Scenarios: Most factory air pressures are set 0.5~1.0 MPa between, 0.6~0.8 MPa the most common. This range can meet the power requirements of automatic production lines, pneumatic tools, manipulators and other equipment to ensure efficient and stable operation.
   • Precision Manufacturing Scenarios: In the fields of electronic chip manufacturing and precision assembly, the air pressure needs to be precisely controlled. 0.4~0.6 MPa to avoid damage to precision components caused by high pressure.
   • Special Process Scenarios: Such as high-pressure molding process, the air pressure may be as high 10~100 MPa to meet specific material molding needs.
2. Examples of Industry Differences
   • automobile Manufacturing common air pressure for stamping, welding and other processes 0.6~0.8 MPa to ensure that the equipment action is accurate and energy-saving.
   • Food Packaging: Air pressure is usually set 0.5~0.7 MPa, taking into account the operating efficiency of the equipment and the sealing of the package.
   • Glass industry: Part of the process needs low pressure operation, air pressure range 0.2~0.4 MPa to prevent the glass from breaking.

2. the core basis for air pressure setting

1. equipment performance requirements
   • pneumatic tools (such as pneumatic wrenches, spray guns) are usually required. 0.5~0.7 MPa air pressure to ensure work efficiency.
   • Large equipment (e. g. CNC machine tools, industrial robots) may require 0.8~1.0 MPa to provide sufficient driving force.
2. Process flow requirements
   • precision machining the air pressure fluctuation should be controlled within ± 0.05 MPa to ensure the processing accuracy.
   • continuous production line: The stability of air pressure directly affects the production rhythm, and the pressure shall be maintained constant by air storage tank, pressure stabilizing valve and other equipment.
3. Balancing safety and energy efficiency
   • safety Threshold the design pressure of the pressure-bearing parts of the equipment is usually 1.5 to 2 times of the rated pressure, and long-term overpressure operation will accelerate the aging of the parts.
   • Energy efficiency optimization: For every 0.1 MPa increase in air pressure, the energy consumption of the air compressor will increase by about 7%, and excessive pressurization should be avoided according to actual needs.

Industry Practice Suggestions for 3. Air Pressure Management

1. graded gas supply system
   • main pipeline: Set pressure 0.7~0.8 MPa meet most of the equipment needs.
   • Branch pipe: Adjusted by pressure reducing valve 0.4~0.6 MPa for precision equipment or low energy consumption scenarios.
   • Special Process Piping: Separate configuration of booster equipment to ensure high-pressure process requirements.
2. Dynamic regulation and monitoring
   • install pressure sensor and intelligent control system to automatically adjust the loading rate of air compressor according to the air consumption to avoid no-load energy consumption.
   • Real-time monitoring of air pressure fluctuations, over-limit alarm and linkage shutdown protection to ensure production safety.
3. Periodic maintenance and calibration
   • check the accuracy of pressure gauge and pressure reducing valve every month. If the error exceeds 2%, it shall be calibrated or replaced in time.
   • Test the take-off pressure of the safety valve every quarter to ensure that the pressure can be released in time when overpressure.

4. Conclusion

the setting of the plant air pressure requires a comprehensive assessment of equipment performance, process requirements and safety specifications:

• general Scenarios: Preferred 0.6~0.8 MPa balancing efficiency and energy efficiency.
• Precision Scene: strictly controlled in 0.4~0.6 MPa, And equipped with voltage stabilizing device.
• Special process set the high pressure according to the process requirements, and strengthen the verification of the pressure bearing capacity of the equipment.

Enterprises should establish an air pressure management system to ensure the stable and efficient operation of the air pressure system through graded gas supply, dynamic monitoring and regular maintenance, while reducing energy consumption and safety risks.