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Corrosion test room
 

Functional introduction

    The high-temperature steam oxidization and high-temperature flue gas ash corrosion of materials are the major problems for supercritical and ultra-supercritical units. Stress corrosion and stress corrosion fatigue are also common problems for nuclear power stations. The corrosion test room is based on engineering applications. It carries out the corrosion test of metal materials in the flow steam and high-temperature flue gas ash environment with ultra-supercritical parameters, performs the stress corrosion and stress corrosion fatigue tests in simulated service environments and researches the rules and control and protection methods for high-temperature corrosion and mechanical-chemical corrosion of materials.

Instruments and equipment

    tra-    supercritical steam oxidization test bench
    High-temperature flue gas corrosion test bench
    Slow-strain-rate stress corrosion tensile testing machine
    Slow-strain-rate stress corrosion fatigue testing machine 
    High-temperature and high-pressure dynamic corrosion testing kettle

3. Parameters and technical level

    Name and model number of equipment: Ultra-supercritical steam oxidization test stand
    Steam pressure: ≤37MPa
    Temperature: ≤760℃

    Name and model number of equipment: High-temperature flue gas corrosion test stand
    Temperature: ≤900℃ 
    The mixture of five types of gas can be realized.

    Name and model number of equipment: Slow-strain-rate stress corrosion tensile testing machine
    Loading mode: Electronic loading
    Maximum test temperature range: ≤600℃
    Maximum operating pressure: ≤30Mpa
    Corrosion capacity: 3.0L
    Load accuracy: ±0.5% 
    Maximum load: 50KN
    Tensile speed range: Stepless regulation within 10-4 - 10-8mm/s

    Name and model number of equipment: Slow-strain-rate stress corrosion fatigue testing machine
    Loading mode: Electronic loading
    Maximum test temperature range: ≤350℃
    Maximum operating pressure: ≤35Mpa 
    Corrosion capacity: 3.0L
    Load accuracy: ±0.5%
    Maximum load: 50KN

    Name and model number of equipment: High-temperature and high-pressure dynamic corrosion testing kettle
    Maximum test temperature range: ≤300℃;
    Maximum operating pressure: ≤35Mpa;
    Corrosion capacity: 5L; 
    Stirring device: Magnetic stirring; the maximum rotational speed is not less than 1750rpm and the rotation speed can be adjusted continuously.

                   

4. Allowable test research items
    Flow steam oxidization test of materials in the range from sub-critical parameters to ultra-supercritical parameters, high-temperature flue gas ash corrosion test of different components, constant-load creepage test constant/slow-rate tensile test, corrosion fatigue test, crack propagation test,static or dynamic coupon test and the multiple corrosion tests including static or dynamic electrochemical corrosion under high-temperature and high-pressure medium.

 

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