High pressure boiler tube is among the boiler tube, from the the seamless steel-tube type. Manufacturing systems and seamless tube will be the exact same, but have stringent request for fabricating steel utilized in the metal. High pressure boiler tubes are commonly in high-pressure conditions and high temperature, when using the conduit beneath the action of gaseous water and high-temperature flue gas, oxidization and corrosion will happen. Requirements of steel pipe with high rupture strength, high oxidation corrosion resistance, and also have good organizational stability. High pressure boiler tube is principally used to fabricate high-stress and ultrahigh-pressure boiler superheater tubes, reheater tube, airway, including main steam pipe. High pressure boiler tubes are often in high temperature and high-pressure conditions, when using the conduit underneath the action of high-temperature flue gas and gaseous water, oxidization and corrosion will happen. Prerequisites of seamless metal pipe oxidation corrosion resistance that is high, with high rupture strength, and have good organizational stability. High pressure boiler tube is mainly used to make high pressure and ultra-high-pressure boiler superheater tubes, reheater tube such as main steam pipe. High pressure boiler tubes obvious depth. Influence the results of unsaturated resin; chlorinated unsaturated polyester resin having a top degree of firmness, excellent high temperature oxidizing acids and wet chlorine and other oxidizing medium, superb resistance to chlorine solution medium and heat resistance, higher sequence under pressure to work with, often regarded heating surface tube layout is quite thick. Prevent high pressure boiler in the fire rapidly warming deformed drop-off, its measures are varied, the key would be to take an alternative approach determined by the circumstances, such as the utilization of insulating material, refractory steel obstacle direct flame burning, decrease the rate of heat transfer delayed steel temperature, strength becomes weak time. But no matter what strategy adopted, the principle is exactly the same. Because of impurity components have an effect on the quality of the high pressure boiler, high rates of harmful elements in steel goods and inclusion of control has very strict demands, to strive different impurity components must control at really low levels, often in generation using secondary refining the generation process to be able to protect its cleanliness. First, high-pressure boiler pipe installation is difficult, notably in Supercritical no drum, increasing the starting program, heating conduit systems, rigid beam volume than normal subcritical boilers big, measure, and all of the heating surface welding, installation hard. Frequently in high pressure boiler tubes when when working with the conduit underneath the action of high temperature fuel and water vapour, high temperature and pressure conditions, oxidation and corrosion will happen.
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