This paper investigates the variation and effects of punch and die geometry, blank-holding pressure, top-ram pressure, lubrication, and drawing speed in the deep-drawing of C.R.1 steel cups of 0.9 mm thickness.
Further improvement can be obtained by increasing the drawing speed.
The major factors include the area reduction, the lubricant, the drawing speed, and the die angle.
The wave number of fiberglass increases after FBT and it is in proportion to the drawing speed.
The influence of drawing process parameters such as nominal draw ratio, drawing speed and drawing temperature on drawing load, final area reduction (actual draw ratio), elastic moduli and yield strength was studied.
Then a design of experiment was carried out to relate the tube drawing phenomenological parameters such as die angles, reduction and drawing speed to the interface parameters.
Crystallizations are observed in coupling region under scanning electron microscope (SEM) and microscopic infrared (IR), and the micro crystallizations become smaller with the drawing speed increasing.
The cooling of a monofilament proves to be independent of the drawing speed, which compares well with the results obtained in practice.
An optimization for simultaneously strengthening and toughening was achieved in the sample with relatively high content MWCNTs prepared upon fast drawn speed.
A numerical model is developed, validated, and applied to simulate the hollow optical fiber drawing process under a wide range of boundary conditions, particularly draw speed, tension, and temperature.
