Study On Evaluation Of High Temperture Oxidation Properties Of Metal Materials With Constant Stress

With the continuous boiler upgraded,the influence of the high temperature oxidation and corrosion of the metal materials which caused the tube burst or leakage issue become more and more paid attention.Because the industry was lack of an unified evaluation method of metal material temperature oxidation resistance evaluation under the constant stress,this paper based on the actual situation of metallic materials in the boiler operating system,designed a new type of which stress could be loaded high-temperature oxidation test platform to characterize the anti-metal material properties of high-temperature oxidationIn this paper,we studied the principles of steam oxidation material,model of oxide film deterioration,hot corrosion related to metal material,revealing causes.of the metal material temperature oxidation resistance and oxidation failure in supercritical boiler parameter.By meanings of the finite element model,the shape of the sample for the test device was further optimized by means of numerical simulation.A better shape of the sample was found after the study,which laid the foundation for the next step.According to the principle of oxidation and numerical simulation conclusions,we designed a new high-temperature oxidation test platform load stress,and made a prototype device.A,B two experiment results show that the test platform could be utilized to evaluate high-temperature oxidation resistance of metallic material load stress conditions.Comparing the test data,it’s proved that carbon steel could meet the operating system of the reheating heater inlet header in super critical conditions with 350℃ and 6MPa.