A kind of molding method of super high strength gh4169

Abstract

The invention discloses a forming method of ultra-high-strength GH4169. The process steps include: 1) pier forging: performing two pier forgings with a deformation amount of 40-70%; 2) temperature-controlled elongation: above 920°C In the recrystallization temperature zone, 40-70% of the deformation amount is elongated per fire; 3) Low-temperature rolling: 1010-1040°C is fully insulated and heated, and then the temperature is raised to 1070-1100°C, and then rolled out of the furnace; 4) Cold rolling Drawing processing: the deformation of each cold drawing is controlled at 14-20%, and the strain rate is adjusted to 0.5-0.9s ‑1 . Utilizing the technical scheme disclosed in the present invention, through process design and combined innovation of process parameters, an excellent cold-worked structure with a grain size of 11 to 12 can be obtained, and a GH4169 cold-drawn bar with a tensile strength of 1530 MPa or more can be stably obtained, and the number of successful Produce.

Description

technical field [0001] The invention belongs to the technical field of alloy manufacture, and in particular relates to a forming method of ultra-high strength GH4169. Background technique [0002] The general strength requirement of high-temperature alloy GH4169 is ≥1274MPa. The mass production of 1500MPa-level ultra-high-strength GH4169 has not been realized in China for many years. Products basically rely on imports. [0003] The process difficulty of ultra-high-strength GH4169 mainly lies in the control of grain size. It is necessary to strictly control the deformation process in the cold and hot forming process, and gradually refine the grains. [0004] At present, most enterprises in the industry are unable to strictly control the deformation process due to old equipment, lack of tooling, and unreasonable process design. As a result, the grains grow repeatedly or even mix crystals during the thermal processing process, and finally inherit the cold processing process, r...

AI Technical Summary

Problems solved by technology

[0004] At present, most enterprises in the industry are unable to strictly control the deformation process due to old equipment, lack of tooling, and unreasonable process design. As a result, the grains grow repeatedly or even mix crystals during the thermal processing process, and finally inherit the cold processing process, resulting in the failure of the final product. ideal performance

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