Novel nickel-chromium-cobalt-molybdenum high-temperature alloy seamless tube for power station and manufacturing method
A technology of superalloy and manufacturing method, applied in metal rolling, metal processing equipment and other directions, can solve problems such as superalloy, and achieve the effect of small dimensional deviation, improved surface quality and dimensional accuracy, and good surface quality
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[0055] Example 1
[0056] This embodiment provides a new type of nickel-chromium-cobalt-molybdenum superalloy seamless tube for power station, the seamless tube includes the following components by weight: C: 0.062%, Si: 0.012%, Mn: 0.03%, P: 0.005 %, S: 0.002%, Cr: 22.82%, Co: 12.95%, Al: 1.21%, Ti: 0.43%, Mo: 8.78%, Fe: 0.18%, Cu: 0.0089%, B: 0.005%, Pb: 0.001 %, Sb: 0.001%, Bi: 0.001%, Sn: 0.005%, As: 0.005%, the balance is Ni and trace elements, and the sum of the above components is 100%.
[0057] The manufacturing method of the above-mentioned new type of nickel-chromium-cobalt-molybdenum superalloy seamless pipe for power station, the process is as follows figure 1 shown, including the following steps:
[0058] (1) Smelting
[0059] The alloy material of the seamless tube is smelted by vacuum induction, the smelting temperature is 1500℃±10℃, cast into an alloy ingot of Ф360×2800mm, annealed at 1000~1100℃×24h×air-cooling, and then vacuum consumable into an alloy ingot...
Example Embodiment
[0088] Example 2
[0089] This embodiment provides a new type of nickel-chromium-cobalt-molybdenum superalloy seamless tube for power station. The seamless tube includes the following components by weight: C: 0.063%, Si: 0.014%, Mn: 0.032%, P: 0.004% , S: 0.003%, Cr: 22.81%, Co: 12.93%, Al: 1.20%, Ti: 0.44%, Mo: 8.77%, Fe: 0.181%, Cu: 0.01%, B: 0.005%, Pb: 0.001% , Sb: 0.001%, Bi: 0.001%, Sn: 0.004%, As: 0.004%, the balance is Ni and trace elements, and the sum of the above components is 100%.
[0090] Adopt the manufacturing method of the nickel-chromium-cobalt-molybdenum superalloy seamless pipe for the new power station in Example 1, and the new-type nickel-chromium-cobalt-molybdenum superalloy seamless pipe for the power station manufactured by the same manufacturing method, the inner and outer surface roughness Ra is less than or equal to 0.7μm; the outer diameter is ±0.02mm, the wall thickness is ±0.05; the grain size is 5.5; mechanical properties at room temperature: R...
Example Embodiment
[0091] Example 3
[0092] This embodiment provides a new type of nickel-chromium-cobalt-molybdenum superalloy seamless tube for power station. The seamless tube includes the following components by weight: C: 0.063%, Si: 0.014%, Mn: 0.032%, P: 0.004% , S: 0.003%, Cr: 22.81%, Co: 12.93%, Al: 1.20%, Ti: 0.44%, Mo: 8.77%, Fe: 0.181%, Cu: 0.01%, B: 0.005%, Pb: 0.001% , Sb: 0.001%, Bi: 0.001%, Sn: 0.004%, As: 0.004%, the balance is Ni and trace elements, and the sum of the above components is 100%.
[0093] Adopt the manufacturing method of the nickel-chromium-cobalt-molybdenum superalloy seamless pipe for the new power station in Example 1, and the new-type nickel-chromium-cobalt-molybdenum superalloy seamless pipe for the power station manufactured by the same manufacturing method, the inner and outer surface roughness Ra is less than or equal to 0.8μm; the outer diameter is ±0.04mm, the wall thickness is ±0.04; the grain size is 5.5; mechanical properties at room temperature: R...
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