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Method for producing Cr containing nickel-base alloy tube and Cr containing nickel-base alloy tube
Method for producing Cr containing nickel-base alloy tube and Cr containing nickel-base alloy tube
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机译:含铬镍基合金管的生产方法及含铬镍基合金管
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摘要
To form a chromium oxide film on the inner surface of a Cr containing nickel-base alloy tube inexpensively and uniformly, the Cr containing nickel-base alloy tube is heated in atmospheric gas of carbon dioxide gas and non-oxidation gas to form an oxide film consisting of chromium oxide having a thickness of 0.2 to 1.5 μm on the inner surface of the Cr containing nickel-base alloy tube. The atmospheric gas may contain oxygen gas of 5 vol % or less and/or water vapor of 7.5 vol % or less.
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