Meltless recycling technique has been utilized to overcome the lack of primary resources, focusing on reducing the usage of energy and materials. Hot press was proposed as a novel direct recycling technique which results in astoundingly low energy usage in contrast with conventional recycling. The aim of this study is to prove the technical feasibility of this approach by characterizing the rec...

Abstract A series of ring compression tests using BS970:708M40 alloy steel samples were studied. These conducted a 2-factor soak-temperature variable, namely 1030 °C and 1300 °C, 4-factor lubricant variable consisting unlubricated samples, synthetic water-based, graphite molybdenum disulphide viscous grease. The agents all applied to the tool/billet interface. Process variables such as blow for...

Large aluminum alloy ring forgings are the core components of heavy-duty rocket fuel storage tanks, and large residual stress inside rings leads to poor shape accuracy thin-walled parts. The initial 2219 blank was tested using drilling method, creep constitutive coefficient determined through relaxation tests. numerical simulation processes thermal relief (TSR), vibration (VSR), thermal–vibrati...

Design deficiencies are a common source of component failure. Examples include the presence of a sharp notch in regions of high stress or a fillet radii that is too sharp. Using a component design for a new application can also lead to unanticipated failures. Higher stresses or unanticipated service conditions can cause unforeseen failure because of complex or increased stress fields. Stress co...