Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Rotation around pins

Figure 5-8. Expander nozzle adjustment geometry requiring component rotation around pins (no sliding in slots). Figure 5-8. Expander nozzle adjustment geometry requiring component rotation around pins (no sliding in slots).
The tool serves three primary functions, that is, heating of the workpiece, movement of material to produce the joint, and containment of the hot metal beneath the tool shoulder. Heating is created within the workpiece both by friction between the rotating tool pin and shoulder and by severe plastic deformation of the workpiece. The localized heating softens material around the pin and, combined with the tool rotation and translation, leads to movement of material from the front to the back of the pin, thus Ailing the hole in Ihe tool wake as the tool moves forward. The tool shoulder restricts metal flow to a level equivalent to the shoulder position, that is, approximately to the iniAal workpiece top surface. [Pg.1]

If the boundary of the medium is impermeable, the diffusion flux across it is absent and therefore the propagation properties of the wave elements adjacent to the boundary are the same as for the elements of a continuous wave. It means that, in the framework of our analysis, the wave is expected to break at the boundary when its curvature ko at the boundary exceeds the critical curvature kd (To) where To is the rotation period of the pinned wave. Since ko grows and To decreases for the pinned waves rotating around the holes of smaller radii, such breakup must occur at a sufficiently small radius of the hole. [Pg.149]

Each dipole is pinned down at its midpoint, but can rotate freely in the plane of the paper around that point. The GA will be used to determine the set of angles made by the dipoles with the vertical axis that yields the lowest total energy. It is not hard to think of a low-energy arrangement, but this problem forms a convenient platform through which to follow the workings of the GA. [Pg.119]

Q is the instantaneous volumetric flow rate downward in the negative z direction which intersects the circle mapped ont by one end of a vector that rotates completely around the z axis while the other end is pinned to the z axis at point O. The coordinates of the following points are of interest in developing relations between Vr and vg and the stream function ... [Pg.184]

If one end of a vector is pinned on the symmetry axis at r = 0 and the other end lies somewhere on the lateral surface of the tube at r = R, then this vector maps out a circular cross section of n when it is rotated by Itt radians around the symmetry axis. The volumetric flow rate through this circle is jzR v ), where (u ) is the average fluid velocity through the tube. The axisymmetric stream function at r = is defined by... [Pg.239]

The polymer pin (A) was clamped into a special specimen holder (B), which in turn was attached to a shaft (C) supported in a linear bearing (D). With the special specimen holder (B), it was possible to impose a rotation of the pin around its load axis, independent from rotation of a disc, as well as to change the radius of the wear path prescribed by the pin on the counterface (J). [Pg.304]

In injection blow molding, the parison is injected into a preform cavity and around a core pin in the exact quantity required to form a container. The preform mold is kept at a precisely controlled temperature, which is just a little cooler than the melt temperature. After injection, the mold opens, and the core pin and the still warm preform are rotated 120°. A blow mold then closes over the preform, and air is injected through the core pin. After the container is blown, it is rapidly cooled by contact with the walls of the blow mold, which are kept at around 102-122°C by cold air or fluid circulating through the mold passageway. The mold then opens, a second 120° rotation occurs, and the part is stripped from the core pin. Then a third 120° rotation of the transfer head returns the core pin to the preform injection mold, and the cycle is repeated. [Pg.283]


See other pages where Rotation around pins is mentioned: [Pg.287]    [Pg.88]    [Pg.339]    [Pg.250]    [Pg.35]    [Pg.42]    [Pg.44]    [Pg.138]    [Pg.414]    [Pg.141]    [Pg.141]    [Pg.121]    [Pg.150]    [Pg.41]    [Pg.1381]    [Pg.46]    [Pg.979]    [Pg.1043]    [Pg.415]    [Pg.155]    [Pg.208]    [Pg.458]    [Pg.545]    [Pg.459]    [Pg.313]    [Pg.225]    [Pg.187]    [Pg.37]    [Pg.38]    [Pg.41]    [Pg.44]    [Pg.111]    [Pg.195]    [Pg.196]    [Pg.278]    [Pg.319]    [Pg.460]    [Pg.122]    [Pg.490]    [Pg.48]    [Pg.200]    [Pg.330]    [Pg.1313]   
See also in sourсe #XX -- [ Pg.287 ]




SEARCH



Pin, pins

Pinning

© 2024 chempedia.info