IEC 60335-1 Clause 22.32 Pressure Test Apparatus for Ceramic Materials

The original KP-Y3501 documentation references GB 4706.1-2005 Clause 22.32.

For current China-market projects, laboratories should confirm the corresponding requirement in the applicable edition of GB/T 4706.1-2024 rather than automatically using legacy GB 4706.1-2005 project information.

Before equipment configuration is finalized, confirm:

• Applicable IEC or GB/T standard
• Standard edition or publication year
• Applicable clause
• Certification or laboratory project requirements

Prepare the Ceramic Specimen

Select the ceramic component or material specimen specified by the applicable product standard or laboratory procedure and place it in the pressure vessel.

Add the Test Solution

Add the required fuchsine-containing solution so that the specimen is exposed according to the applicable test method. The original KP-Y3501 procedure uses 1 g of basic fuchsine in 100 g of methylated spirit.

Set the Test Pressure

Set the required pressure using the pressure-control system. The equipment provides an adjustable high-pressure capability above 15 MPa up to 20 MPa.

Set the Test Duration

Program the required pressure-holding time. The KP-Y3501 timer can be set from 1 to 99 hours.

Reset the Pressure-Relief Mechanism

Before starting the test, return the automatic pressure-relief mechanism and pressure-holding valve to the required test position.

Start Automatic Pressurization

Start the test cycle. The electric pressure-boosting system automatically raises the pressure inside the vessel. When the preset pressure is reached, the pressurization system stops and the vessel enters the pressure-holding stage.

Maintain the Preset Pressure

The ceramic specimen remains exposed to the pressurized test solution for the programmed duration. Automatic pressurization and holding reduce the need for continuous manual intervention during long-duration testing.

Automatic Pressure Relief

When the programmed test time expires, the pressure-relief mechanism automatically opens and releases system pressure. An audible reminder indicates completion of the programmed test cycle.

Remove and Examine the Specimen

Open the pressure vessel only after complete depressurization has been confirmed. Remove and clean the specimen, then break it to expose fresh internal surfaces and inspect for evidence of fuchsine penetration.

Automatic Electric Pressurization

An electrically driven boosting system raises the vessel pressure automatically after the test is started, reducing the need for continuous manual pressure generation.

Preset Pressure Control

The required pressure is set before the test cycle. When the preset value is reached, the pressure-boosting system stops and the apparatus enters the holding stage.

Long-Duration Pressure Holding

The programmable timer supports test periods from 1 to 99 hours, allowing long-duration pressure exposure without continuous operator intervention.

Automatic Pressure Relief

At the end of the programmed test period, the apparatus automatically initiates pressure release, which is particularly relevant for extended tests at pressures in the 15 MPa class.

450 mL Pressure Vessel

The documented pressure vessel capacity is 450 mL. Sample dimensions and quantity should be confirmed before quotation to verify vessel suitability.

The test combines high pressure with a test solution containing methylated spirit. Appropriate laboratory safety procedures are therefore required.

Operators should ensure that:

• the pressure vessel and all pressure connections are correctly secured before testing;
• the specified operating pressure is not exceeded;
• the vessel is fully depressurized before opening;
• pressure-system components are periodically inspected and maintained;
• the test solution is prepared and handled according to laboratory chemical-safety procedures;
• suitable ventilation is provided when methylated spirit is handled;
• appropriate personal protective equipment is used;
• ignition sources are controlled according to the laboratory’s solvent-handling procedures;
• the pressure vessel is not opened while residual pressure remains.