Texture evolution and controlling of high-strength titanium alloy tube in cold pilgering for properties tailoring

Granular media filler assisted push bending method of thin-walled tubes with small bending radius

A piercing process for a new four-high screw rolling mill without guides designed by comparing existing piercing processes in screw rolling mills is proposed. To evaluate the feasibility of this process, piercing in two-, three-, and four-high screw-rolling mills was simulated using QForm FEM software. Simulation results demonstrate advantages of the new piercing process according to several criteria, including energy consumption.

Computer Simulation of Piercing in a Four-High Screw Rolling Mill

The utilisation of industrial residual products to develop new value-added materials and reduce their environmental footprint is one of the critical challenges of science and industry. Development of new multifunctional and bio-based composite materials is an excellent opportunity for the effective utilisation of residual industrial products and a right step in the Green Deal’s direction as approved by the European Commission. Keeping the various issues in mind, we describe the manufacturing and characterisation of the three-component bio-based composites in this work. The key components are a bio-based binder made of peat, devulcanised crumb rubber (DCR) from used tyres, and part of the fly ash, i.e., the cenosphere (CS). The three-phase composites were prepared in the form of a block to investigate their mechanical properties and density, and in the form of granules for the determination of the sorption of water and oil products. We also investigated the properties’ dependence on the DCR and CS fraction. It was found that the maximum compression strength (in block form) observed for the composition without CS and DCR addition was 79.3 MPa, while the second-highest value of compression strength was 11.2 MPa for the composition with 27.3 wt.% of CS. For compositions with a bio-binder content from 17.4 to 55.8 wt.%, and with DCR contents ranging from 11.0 to 62.0 wt.%, the compressive strength was in the range from 1.1 to 2.0 MPa. Liquid-sorption analysis (water and diesel) showed that the maximum saturation of liquids, in both cases, was set after 35 min and ranged from 1.05 to 1.4 g·g −1 for water, and 0.77 to 1.25 g·g−1 for diesel. It was observed that 90% of the maximum saturation with diesel fuel came after 10 min and for water after 35 min.

https://www.mdpi.com/2073-4360/13/4/574/pdf

Towards Next-Generation Sustainable Composites Made of Recycled Rubber, Cenospheres, and Biobinder.

Hydroforming processes of metal tubes and sheets are being widely applied in manufacturing because of the increasing demand for lightweight parts in sectors such as the automobile, aerospace, and ship-building industries [...]

Shohei Kajikawa

Papers

A new ductile fracture criterion for skew rolling and its application to evaluate the effect of number of rolls

Prevention of defects by optimizing mandrel position and shape in rotary draw bending of copper tube with thin wall

An extrusion method of tube with spiral inner fins by utilizing generation of spiral outer fins/grooves

Molding of wood powder with a natural binder

Flange compression using stepped punch for forming extremely deep cup with flange from aluminum alloy sheet