Low-stress GH4169 superalloy ring part manufacturing method

The invention discloses a low-stress GH4169 superalloy ring part manufacturing method. The method comprises the steps that GH4169 superalloy bars are subjected to heating, heat preservation, upsetting and punching and then are subjected to pre-rolling and finish rolling to be made into ring parts; the ring parts are subjected to solution treatment, and a water medium at the temperature greater than or equal to 160 DEG C is adopted for cooling during solution treatment; after solution treatment, the ring parts are subjected to cold bulging, and the bulging rate is 1.8%-2.2%; after bulging, the ring parts are subjected to aging treatment to obtain low-stress GH4169 superalloy ring parts. By means of the method, residual stress of the GH4169 superalloy ring parts can be effectively removed, and the performance of forging pieces can be improved. The method is applied to manufacturing of low-stress GH4169 superalloy ring parts. 本发明公开了种低应力GH4169高温合金环件制造方法，其步骤为：先将GH4169高温合金棒材加热保温后镦粗、冲孔，再经过预轧、终轧制成环件，对环件进行固溶处理，固溶冷却时采用