What is the general pressure in the factory

Industry practice note on factory air pressure standards

In industrial production, compressed air is a commonly used power source, and its pressure setting must take into account equipment performance, process requirements and safety regulations. The following provides you with a detailed analysis of the common range and setting basis of factory air pressure from the perspective of technical principles and industry practice.

1. Common range of factory air pressure

1. Scope of basic standards
   • Conventional industrial scenarios: Most factories have air pressure set at0.5~1.0 MPabetween, among them0.6~0.8 MPaThe most common. This range can meet the power needs of automated production lines, pneumatic tools, manipulators and other equipment to ensure efficient and stable operation.
   • Precision manufacturing scenarios: In fields such as electronic chip manufacturing and precision assembly, air pressure needs to be accurately controlled at0.4~0.6 MPa, to avoid damage to precision parts caused by high pressure.
   • Special process scenarios: For high-pressure forming processes, the air pressure may be as high as10~100 MPa, to meet specific material molding needs.
2. Examples of industry differences
   • automobile manufacturing: Air pressure commonly used in stamping, welding and other processes0.6~0.8 MPaEnsure that the equipment moves accurately and saves energy.
   • food packaging: Air pressure is usually set to0.5~0.7 MPa, taking into account equipment operating efficiency and packaging tightness.
   • glass industry: Some processes require low pressure operation, air pressure range0.2~0.4 MPato prevent the glass from breaking.

2. The core basis for setting air pressure

1. Equipment performance requirements
   • Pneumatic tools (such as pneumatic wrenches, paint guns) usually require0.5~0.7 MPaAir pressure to ensure work efficiency.
   • Large equipment (such as CNC machine tools, industrial robots) may require0.8~1.0 MPato provide sufficient driving force.
2. Process requirements
   • precision machining: Air pressure fluctuations need to be controlled within ±0.05 MPa to ensure processing accuracy.
   • continuous production line: The stability of air pressure directly affects the production rhythm, and the pressure needs to be maintained constant through air tanks, pressure stabilizing valves and other equipment.
3. Balancing safety and energy efficiency
   • safety threshold: The design pressure of equipment pressure components is usually 1.5 to 2 times the rated pressure. Long-term overpressure operation will accelerate the aging of components.
   • energy efficiency optimization: For every 0.1 MPa increase in air pressure, the energy consumption of the air compressor increases by about 7%. Excessive pressurization needs to be avoided according to actual needs.

3. Industry practical suggestions for air pressure management

1. staged gas supply system
   • main pipe: Set pressure0.7~0.8 MPaMeet most equipment needs.
   • branch conduit: Adjust through pressure reducing valve to0.4~0.6 MPa, for use in precision equipment or low-energy scenarios.
   • Special process piping: Separately equipped with booster equipment to ensure high-pressure process requirements.
2. Dynamic adjustment and monitoring
   • Install pressure sensors and intelligent control systems to automatically adjust the loading rate of the air compressor according to the air consumption to avoid no-load energy consumption.
   • Monitor air pressure fluctuations in real time, alarm over-limit and linkage shutdown protection to ensure production safety.
3. Regular maintenance and calibration
   • Check the accuracy of the pressure gauge and pressure reducing valve every month. If the error exceeds ±2%, it must be calibrated or replaced in time.
   • Test the tripping pressure of the safety valve quarterly to ensure timely relief when overpressure occurs.

IV. Conclusion

The setting of factory air pressure requires comprehensive evaluation of equipment performance, process requirements and safety specifications:

• conventional scenario: Priority0.6~0.8 MPaBalancing efficiency and energy efficiency.
• Precision scene: Strictly control in0.4~0.6 MPa, and equipped with voltage stabilizing devices.
• special process: Set the high pressure according to process requirements, and strengthen the verification of equipment pressure bearing capacity.

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