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发明公开
CN103421938A 一种叶轮用FV520B-S材料的热处理工艺 有权

一种叶轮用FV520B-S材料的热处理工艺
摘要：
本发明公开了一种叶轮用FV520B-S材料的热处理工艺，属于热处理工艺技术领域，该工艺包括以下步骤：（1）固溶化处理，在1050℃±5℃下保温2.0~3.0小时，然后风冷；（2）调整处理，在850℃±5℃下保温2.5~3.5小时，然后风冷；（3）经步骤（2）处理后的FV520B-S材料在室温下停留8小时；（4）时效处理，在610℃±10℃保温4~5小时，然后风冷。经本发明处理后的叶轮其综合机械性能的一次合格率大幅提高。
摘要（英）：

The invention discloses a heat treatment process for an FV520B-S material for an impeller, and belongs to the field of heat treatment process technology. The process comprises the following steps: (1) carrying out solutionizing treatment, keeping the temperature at 1050 DEG C+/-5 DEG C for 2.0 to 3.0 hours, and then carrying out air cooling; (2) carrying out adjusting treatment, keeping the temperature at 850 DEG C+/-5 DEG C for 2.5 to 3.5 hours, and then carrying out air cooling; (3) staying the FV520B-S material treated in the step (2) at the room temperature for 8 hours; and (4) carrying out aging treatment, keeping the temperature at 610 DEG C+/-10 DEG C for 4 to 5 hours, and then carrying out air cooling. The primary qualification rate of comprehensive mechanical properties of the impeller treated by the heat treatment process is substantially increased.

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