Upsetting process and mechanical properties on alloy GH4169 bolt
In order to study the upsetting process and mechanical properties of a certain model of alloy GH4169 bolt,the upsetting process of alloy GH4169 bolt with M30 mm×130 mm was numerically simulated by finite element simulation software Deform-3D,and the influences of different friction coefficients on forming loads,equivalent stress distribution of workpieces and stress distribution in the molds during form-ing process were analyzed.Then,based on the simulation results,corresponding mold structures were designed,and corresponding upsetting process experiments were conducted.Furthermore,the alloy GH4169 bolt forgings obtained from the experiment was performed subsequent process,and the influences of aging treatment and rolling wire process sequence on their microstructure and mechanical properties were ana-lyzed.The research results indicate that the developed alloy GH4169 bolt upsetting process is feasible,the mold structure design is reasona-ble,and the manufacturing process of aging treatment before rolling wire processing during processing can reduce the grain size of the materi-al and have good thread morphology.Its fatigue life is higher than that of bolts processed by rolling wire processing before aging treatment.Thus,the research results have practical guidance value for the upsetting process and subsequent processing methods of alloy GH4169 bolts.
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