Research on precise control of microstructure and mechanical properties of Ni-based superalloy cylindrical parts during hot backward flow spinning

Deformation mechanism of ZK61 magnesium alloy cylindrical parts with longitudinal inner ribs during hot backward flow forming

“…During the HBFF process, the mandrel and snap ring rotate with the spindle of the spinning machine, the blank is driven by friction between it, the snap ring and the mandrel, and each roller feeds along axial and radial directions to form the inner ribs. The induction heating with a high heating rate and high energy efficiency was adopted (Xiao et al, 2018). The deformation zones in flow forming of thin-walled CPLIRs can be divided into two parts, i.e., the inner rib (zone A) and the cylindrical wall (zone B), as shown in Fig.…”

“…The traditional forming methods of thin-walled cylindrical parts with inner ribs (CPIRs) include milling, casting, and welding, where the material utilization ratio and work efficiency are difficult to guarantee and mechanical properties of the formed CPIRs are weakened (Zeng et al, 2020b). With the enhanced formability, low deformation resistance, and high forming precision (Xiao et al 2018), the forming technology of hot backward flow forming (HBFF) was proposed to realize the integrated manufacturing of Mg alloy thin-walled CPLIRs by Yuan et al (2020).…”

Roller design and optimization based on RSM with categoric factors in power spinning of Ni-based superalloy

“…To figure out the relationship between forming quality and process parameters, researchers [17], [18] found that axial feed rates play a key role in shape and thickness of tube spinning, while low feed rate produces higher elongation and lower thickness change. Xia et al [19] and Xiao et al [20] studied the relationship between temperature, thinning ratio, feed rate and grain size in hot power spinning of Ni-based superalloy cylindrical parts in micro scale. Except the process parameters, tool parameters such as roller, also plays a more important role in power spinning compared with in conventional spinning process.…”

Effect of Al3Zr Dispersoid on Microstructure and Mechanical Properties of Al-Cu-Li Alloy During Composite Spinning-Extrusion Forming

“…At present, composite spinning-extrusion (CSE), which combines the advantages of both spinning and extrusion processes, is considered as a new method for the integral formation of ribbed ring cylinders (Domack and Wangner, 2015;Tayon et al, 2019). However, current research on the integral formation of ribbed cylindrical parts is still in the exploration stages, and most of the relevant reports focus on the optimization of process parameters such as temperature, thinning rate, and feed ratio (Zeng et al, 2020;Luo et al, 2018;Zhan et al, 2016;Zhan et al, 2016;Abd-Eltwab et al, 2017;Lin et al, 2018;Xia et al, 2018;Xia et al, 2019). At present, there is no report on the preparation of ribbed ring cylinders through Al-Cu-Li alloy CSE forming.…”