Experimental investigation of flow forming forces in Al7075 and Al2014 – A comparative study

Srivastwa*, Ashutosh Kumar; Singh, Pankaj Kumar; Kumar, Santosh

doi:10.1016/j.matpr.2021.02.781

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…In this context, De et al [4] investigated the surface roughness of an H30 aluminum alloy after being flow formed, and established a correlation between the surface roughness and the flow forming parameters. Srivastwa et al [6] measured the flow forming forces depending on the feed rate and the rotational speed of the mandrel during flow forming process of 2014 and 7075 Al alloys in annealed condition. They found that effect of varying feed rate had a higher effect on the resulting forming forces than the effect of the varying rotational speed.…”

Section: Effect Of Reduction Ratio In Flow Forming Process On Microst...mentioning

confidence: 99%

Effect of reduction ratio in flow forming process on microstructure and mechanical properties of a 6082 Al alloy

MUTLU

2023

Materials Research Proceedings

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Abstract. Flow forming is a cold deformation process in which hollow cylindrical or conical parts with different geometric configurations are produced using tools such as balls, rollers, or flow forming wheels on specialized mandrels. Because it enables the production of parts without any further modifications or with minimal modifications before their use in service, the process is categorized as an NSF technology (net-shape forming), and therefore the flow formed parts can be considered as a final product. The aim of this study is to investigate the microstructure and mechanical properties of a flow formed 6082 Al alloy, which was initially in W-temper condition. Hollow cylindrical preforms were first manufactured by machining, and subsequently solution heat treated and quenched. Then, the parts were flow formed with 3 different reduction ratios (45%, 55% and 65%) prior to aging at 177 °C for 8 h to achieve T8 temper condition. Microstructures of the flow formed parts were examined by an optical microscope, and hardness and tensile tests were conducted. The results revealed that increasing reduction ratio slightly decreases hardness and strength with almost constant ductility.

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Section: Effect Of Reduction Ratio In Flow Forming Process On Microst...mentioning

confidence: 99%

Effect of reduction ratio in flow forming process on microstructure and mechanical properties of a 6082 Al alloy

MUTLU

2023

Materials Research Proceedings

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Investigation of Hardness, Microstructure, and Process Temperature in the Internal Gear Flow-Forming Process

et al. 2023

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Single- and multi-objective optimization of internal gear flowforming process based on increasing tooth height and reducing force and built-up edge

Khodadadi

Khalili

Ashrafi

2023

Trans. Can. Soc. Mech. Eng.

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Flowforming is an incremental metal forming process in which deformation occurs gradually between the roller and mandrel. This process has been widely used for manufacturing of high-precision tubular parts and seamless tubes. Internal gear flowforming process is a new method for manufacturing an internal gear that requires no additional machining process. In this study, the design of experiment method and regression analysis were used to obtain tooth height, force, and built-up edge as functions of the effective parameters, including feed rate, roller diameter, attack angle, and thickness reduction percentage. Next, the simulated annealing and genetic algorithm were used for, respectively, single- and multi-objective optimization of the obtained functions. The goal of optimization was to reduce the force and built-up edge and increase the tooth height. In single-objective optimization, the maximum tooth height was 0.576 mm, the minimum force was 1606.63 N, and the minimum built-up edge was 0.448 mm. In multi-objective optimization, an optimal set of tooth height, force, and built-up edge (Pareto front) is obtained.

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Experimental investigation of flow forming forces in Al7075 and Al2014 – A comparative study

Cited by 4 publications

References 20 publications

Effect of reduction ratio in flow forming process on microstructure and mechanical properties of a 6082 Al alloy

Effect of reduction ratio in flow forming process on microstructure and mechanical properties of a 6082 Al alloy

Investigation of Hardness, Microstructure, and Process Temperature in the Internal Gear Flow-Forming Process

Single- and multi-objective optimization of internal gear flowforming process based on increasing tooth height and reducing force and built-up edge

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