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发明公开
CN105066104A 一种620摄氏度蒸汽参数机组的锅炉集箱管座 无效 - 驳回

一种620摄氏度蒸汽参数机组的锅炉集箱管座
摘要：
本发明涉及一种620摄氏度蒸汽参数机组的锅炉集箱管座，其特征在于，由P92大口径管制造末级过热器出口集箱或末级再热器出口集箱；管座由617镍基合金小口径管制造；管座一端与末级过热器出口集箱或末级再热器出口集箱焊接，另一端与过热器或再热器管子焊接，过热器或再热器管子材质为Super304H或HR3C奥氏体不锈钢。本发明的管座材料使用617镍基合金小口径管。使用617镍基合金的管座可以应用于大于650℃的运行温度，材料高温氧化性能优异，具有优异的实用价值。617镍基合金管座与过热器或再热器用奥氏体钢小口径管子焊接不需要进行焊后热处理，减少工艺步骤，加快生产。
摘要（英）：

The invention relates to a boiler header tube base of a 620-DEG C steam parameter unit. The boiler header tube base is characterized in that a P92 large-diameter tube is used for manufacturing a finishing superheater outlet header or a final-stage reheater outlet header; the tube base is made of small-diameter tube of nickel base alloy 617; one end of the tube base is welded with the finishing superheater outlet header or the final-stage reheater outlet header; the other end of the tube base is welded with a superheater or reheater tube; the superheater or reheater tube is made of austenitic stainless steel Super 304 H or HR3C. The tube base is made of the small-diameter tube of nickel base alloy 617. The tube base made of nickel base alloy 617 can be applied in the operating temperature higher than 650 DEG C, is excellent in high-temperature oxidation property, and has excellent practical value. Postweld heat treatment is not required for welding the tube base made of nickel base alloy 617 with a small-diameter tube of austenitic stainless steel used for a superheater or reheater, so that the processing steps are reduced, and the production is accelerated.

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