The working pressure range of the press air compressor varies with the model and the use scenario, the highest pressure can usually reach 10 ~ 40MPa (MPa) some special application scenarios are even higher. The following is a detailed analysis:
pressure demand of 1. press air compressor
- conventional pneumatic punch press: Working pressure is generally 0.4 ~ 0.8MPa between, suitable for most stamping, forming and other processes.
- High Pressure Punch: Some special processes (such as thick plate stamping, precision forming) require higher pressures, which may reach 10 ~ 40MPa.
2. air compressor type and pressure range
| Air compressor type | working pressure range | applicable Scenarios |
|---|
| low pressure air compressor | 0.4 ~ 1.2MPa | light pneumatic tools, spraying equipment |
| medium pressure air compressor | 1.2 ~ 3MPa | production line pneumatic tools, pneumatic conveying system |
| high pressure air compressor | 3 ~ 40MPa and above | high-pressure gas cylinder inflation, air tightness test, special stamping process |
limiting factors for 3. maximum pressure
- equipment Design:
- the maximum pressure of the air compressor is limited by its structure, material and sealing performance.
- Piston air compressor: High pressure can be achieved through multi-stage compression, but the efficiency is low.
- Screw air compressor: The single-stage compression pressure is low, and multi-stage compression or booster device is required to increase the pressure.
- Safety specification:
- the maximum allowable working pressure of the air compressor is generally not more than 1.25 times the rated pressure.
- For example, for an air compressor with a rated pressure of 10MPa, the safe maximum pressure is recommended not to exceed 12.5MPa.
- Process requirements:
- the pressure required by the punch process determines the selection of the air compressor.
- High Pressure Scenario: Select special high-pressure air compressor or equipped with booster device.
Application Scenario of 4. High Pressure Air Compressor
- aerospace: Used for special material molding or experiment, the pressure can reach above 40MPa.
- Automobile Manufacturing: High-strength steel stamping, pressure requirements 10 ~ 25MPa.
- scientific research experiment material performance testing, high pressure reactor gas supply, pressure requirements 20 ~ 40MPa.
5. selection recommendations
- clear process requirements: Select the air compressor according to the maximum pressure and flow requirements of the punch.
- Reserved safety margin: It is recommended that the rated pressure of the air compressor is 10% ~ 20% higher than the process demand.
- consider energy efficiency ratio high-pressure air compressor has high energy consumption, and energy-saving equipment needs to be selected.
- Focus on maintenance costs: High-pressure equipment requires strict lubrication and cooling systems and requires regular maintenance.
Summary the maximum pressure of the press air compressor depends on the equipment design and process requirements. The conventional scene is 0.4~0.8MPa, and the special high pressure requirement can reach more than 40MPa. The pressure, flow, safety and energy efficiency ratio should be considered comprehensively when selecting the type.
