Pressure Testing Machine

A: It is commonly used for testing piping systems, pressure vessels, and other components that are designed to handle liquids. The working principle involves applying hydraulic pressure to the test object, gradually increasing the pressure until it reaches the desired test pressure or until a failure occurs.

A: A pressure test, also known as a hydrostatic test or pneumatic test, is a procedure used to verify the strength and leak-tightness of a piping system or pressure vessel. It involves pressurizing the system with a fluid (usually water for hydrostatic tests, or air/gas for pneumatic tests) to a specified pressure level and observing for leaks or deformations. The procedure typically involves filling the system, pressurizing it gradually, holding the pressure, and then inspecting for leaks.

A: Test pressure range: Match the rated pressure of the test piece (e.g., 0–100 MPa for automotive pipes)
Test medium compatibility: Ensure the medium (oil/water/air) does not corrode the test piece
Accuracy class: Generally, ±0.5% or ±1% (higher for aerospace/medical)
Test piece size: Ensure the machine’s clamping device fits the test piece’s diameter/length.

A: Some models (called positive-negative pressure testing machines) can, but basic models only test positive pressure. Negative pressure (vacuum) testing is often used for packaging (e.g., food cans) or sealed enclosures (e.g., electronic casings).

A: Yes. For non-metallic materials, use:
Low-to-medium pressure ranges (avoid over-pressurizing fragile materials).
Soft pressure heads (e.g., rubber-coated) to prevent test piece damage.
Slow pressure rise rates (e.g., 1 MPa/min) to simulate real working conditions.

A: Basic models: 0–200 MPa (for automotive/petrochemical).
High-pressure models: 200–1000 MPa (for aerospace, e.g., rocket engine parts).
Ultra-high-pressure models: Up to 10,000 MPa (for material science research).