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☆ Functional introduction
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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. |