Magnesium alloys develop pronounced crystallographic texture and plastic anisotropy during rolling, which leads to earing during deep drawing of the rolled sheets.
Residual stress of flat roll drawn wires, pressure distribution on the forming rolls and drawing load are studied.
Further, these blown films were oriented along the machine direction using either traditional machine direction orientation (MDO) or compression roll drawing (CRD MDO) technology.
Finally, compression roll drawing technology (CRD MDO) utilizes a patented process that simultaneously applies a stretching and compressive force to orient polymer chains homogeneously without any tiger striping (uneven deformation).
The oriented toughened sheets from roll-drawing and die-drawing processes were characterized in terms of processing conditions (process and draw ratio), interfacial modification (GMA grafting), morphology (particle size and shape) and tensile mechanical properties (modulus, yield stress and toughness).
Unlike metals and glasses, which can be cast from the melt and subsequently rolled, drawn, or pressed into shape, ceramics must be made from powders.
In the case of roller compaction, in which mixtures of active and inert powders are fed via a screw to counter-rotating rolls, drawn into the nip region and compacted under hydrostatic and shear stresses, variation in density of the roller compacted material has been commonly observed.
Because of its high melting point, ruthenium is not easily cast; its brittleness, even at white heat, makes it very difficult to roll or draw into wires.
There may not be a lengthy drum roll to draw people's attention, but from this week circus performers have a new status.
