Draw-down force

Set the cage own quality for mj quality goods for fall in the tank for the speed on the device for V, to vertical Wells Jane center line for the y axis, down for the positive direction, with China level as the X axis, established for origin coordinate y intersection, as shown in figure is the cage when drawing down forces continues ... 

During the cooling process the fiber is subjected to a draw-down force, which introduces the orientation. Additional orientation may be introduced later by stretching the fiber to a higher draw ratio. 

Finally, the draw (or draw-down) force at the frost line, Fz, is related to the pressure difference and the viscous force in the axial direction as... 

The lower velocity in the throat does not affect the jet s performance, as long as the velocity remains above the speed of sound. If the velocity in the throat falls below the speed of sound, we say that the jet has been forced out of critical flow. The sonic pressure boost is lost. As soon as the sonic boost is lost, the pressure in the vacuum tower suddenly increases. This partly suppresses vapor flow from the vacuum tower. The reduced vapor flow slightly unloads condenser 1 and jet 2 shown in Fig. 16.2. This briefly draws down the discharge pressure from jet 1. The pressure in the diffuser throat declines. The diffuser throat velocity increases back to, or above, sonic velocity. Critical flow is restored, and so is the sonic boost. The compression ratio of the jet is restored, and the vacuum tower pressure is pulled down. This sucks more vapor out of the vacuum tower, and increases the loads on condenser 1 and... 

Sometimes called drawing, cup drawing, or radial drawing of metal sheet, deep drawing is used to produce deep, round cups or containers by a process in which a flat sheet blank is firmly held by hold-down forces while the central portion of the sheet is impacted by a flat-bottomed punch into a desired shape, without the formation of wrinkles of the side wall (Fig. 7) [17]. This operation draws (pulls) the edges of the blank inward to form the wall of the cup (or container). The metal is stretched radially by the tensile forces produced by the punch, but it is compres.sed circumferentially (or in the perpendicular direction) as its diameter... 

This test uses 50.8-, 76.2-, and 101.6-mm (2.0-, 3.0-, and 4.0-in.) punches. However, a 101.6-mm (4.0-in.) diameter punch is the most widely used. Figure 22 [57] shows the typical tooling used for this test. The lock bead together with a hold-down force (HDF) of about 222 kN (25 ton) totally prevents drawing-in of the flanges. 

A) Experimental set-up for in situ X-ray diffraction during forced siiking. The spider is fixed by soft tape and mylar bandages to a metai support. The path of the thread from the spinnerets to the motorised reei is schematically indicated. Distance indications (to the spinneret exit) correspond to points where X-ray diffraction data were recorded. (B) Optical image of draw-down of N. edulis spider silk at a drawing speed of 20 mm s T (C) Diffraction pattern obtained at 23.5 +. 5°C. Miller s indices are indicated for selected reflections (for details see ref. 87). 

The fiber-spinning process is a prime example of uniaxial extension. The process consists of two regions (i) the first is the extrudate swell region, where normal forces accumulated during extrusion suddenly relax to cause swelling (ii) the second is the draw-down region, where the fiber diameter decreases according to the velocity... 

After cutting the paper frame and drawing down the bottom jaws of Instron tester at the constant speed of 2 mm/min the changes of the loop shape and load were observed. When the loading force bending the fibre T reached the value 50 juN the loop shape was recorded using Fastax camera. The speed of camera was equal to 500 pictures per second. 

Figures 11 and 12 show the effects of radiation on the melt strength and draw down ratio of the homopolymer and copolymer, respectively. While the same pattern is observed in both cases, it is noteworthy that the draw down ratio of Kynar 710 is fairly high (up to 130) while the melt force is only 20 cN. As the radiation dose is increased the melt strength increases by up to four-fold at 5 Mrads, however, the processability is maintained. While the draw down ratio can be redueed to below 20 because of ehain branehing, the best effects are at 3 Mrads, where the resin shows proeessability and improved sag resistanee.

Fig. 5. Separation in Latham bowl (a) whole blood is pumped down the feed tube and enters bowl at bottom (b) centrifugal force spins denser cellular components outside, leaving plasma or platelet-rich plasma (PRP) in inner band (c) when bowl is full, plasma flows out effluent tube, followed by platelets and then leukocytes, until bowl is almost completely full of ted cells (d) after draw is completed, bowl stops spinning and uncoUected components are...

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