Contact welding of sintered powder materials

Gulyaev, A. I.; Podnozov, V. G.; Pyryalov, L. A.

doi:10.1007/bf01117795

Cited by 1 publication

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“…For laboratory experiment in order to study the effect of the new forging technology on the evolution of microstructure in the newly designed step-wedge dies billets made of carbon steel 40 with dimensions b×h×l = 30×60×250 mm were prepared. To restore the initial structure of the billet before deformation it was subjected to recrystallization annealing at a temperature of 680°C with an exposure of 4 hours [21] in a tubular resistance furnace For the experiment newly designed step-wedge dies with an angle of inclination of 30° and with the angle of the wedge of the upper die and the wedge-shaped cavity of the lower die equal to 160°, old designed step-wedge dies with the angle of inclination of 30° and with the angle of the wedge of the upper and lower dies equal to 160°, step dies with the angle of inclination of 30° were prepared.…”

Section: Methodsmentioning

confidence: 99%

Development and Research of the Billet Forging Technology in the Newly Designed Step-Wedge Dies

Tolkushkin

Lezhnev

Naizabekov

2019

MSF

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One of the main ways to improve product quality, obtained by forging, is implementing shear and alternating deformation (severe plastic deformation) during deformation process, which allows manufacturing products with required mechanical properties and less forging reduction. In practice, it is possible to implement shear and alternating deformation by improving the design of the ingots or the billets, forging tools, heating modes and forging method. In this paper newly designed forging die, which allows implementation of shear and alternating deformation without sufficient changes of the billet sizes, is proposed. By the research results of the new forging technology influence in the proposed tools on the microstructure evolution, it was found, that the use of the newly designed step-wedge dies has more potential for manufacturing high-quality forgings with required level of mechanical properties.

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Section: Methodsmentioning

confidence: 99%