Bore diameter

Probably the largest compound vessels built were two triple-wall vessels, each having a bore diameter of 782 mm and a length of 3048 mm designed for a pressure of 207 MPa (30,000 psi). These vessels were used by Union Carbide Co. for isostatic compaction unfortunately the first failed at the root of the internal thread of the outer component which was required to withstand the end load (40). A disadvantage of compound shrinkage is that, unless the vessel is sealed under open-end conditions, the end load on the closures has to be resisted by one of the components, which means that the axial stress in that component is high. 

With a batch process, such as hot isostatic compaction (HIP), heat exchange as used in a continuous reactor is not possible, and it is common practice to provide a furnace within the pressure vessel which is thermally insulated to ensure that the temperature of the vessel does not rise above 300°C. Most HIP operations involve gas pressures in the range 70—200 MPa (10—29,000 psi) and temperatures of 1250—2000°C, occasionally 2250°C (74). The pressure vessel may have a bore diameter from 27 to 1524 mm (75) and is nearly always provided with threaded closures sealed with O-rings made of elastomer provided the temperature is low enough. 

These motors are comparatively long and slender requiring a smaller bore diameter to slide easily into the bore hole/ bore well with the pump. 

Rq = relubricating interval in hours of operation K = a factor depending on type of bearing d = bearing bore diameter (mm)... 

For an adequate interferenee fit seleeted on the basis of the hole, the toleranees are taken from BS 4500A (1970) as H7-s6. This translates to a toleranee on the hub bore H7 =+0.030, +0.000 mm and for the shaft diameter, s6 =+0.072, +0.053 mm. Given the notation for hub bore diameter is d, and eonverting to mean values and bilateral toleranees, these dimensions beeome ... 

The most difficult part of a field test is the flow meter, if it wasn t planned in the construction phase. There is no way to simulate a meter run if you don t have the proper pipe length. Figure 10-8 is an example of the requirements. An ASME long radius flow nozzle is preferred by the author, though a short throat venturi will do. The probability is that an orifice is all that will be available. It should be examined before and after the test to verify not only the bore diameter, but the finish. The bore should... 

The outside diameter of the swivel sub is at least equal to the diameter of the upper kelly box. The swivel sub should have a minimum of 8 in. of tong space length. The minimum bore diameter is equal to that of the kelly. The... 

Bore diameter (in) Rod diameter (in) Effective area (in ) Pressure differential across cylinder ports ... 

C = Allowance or clearance for key, inches D = Nominal shaft or bore diameter, inches... 

Smaller bore diameters naturally produce slugs of smaller diameter [31,97]. Typically, a smaller length can also be generated thereby. As a consequence, internal circulation in the slug and specific interface between the slugs are increased. It is assumed that the impact of the increase in internal circulation on mass transfer/ reaction processing is generally more dominant. 

Fig. 2.1.2 A 7-T and 300-MHz horizontal bore magnet with inner bore diameter of 160 mm (Bruker-BioSpin GmbH, Rheinstetten, Germany).

All experiments were performed in a 1.9-T horizontal bore magnet (Oxford Instruments, Oxford, UK) with a dear bore diameter of 31 cm. Magnetic field gradients were produced by a 12-cm id water-cooled gradient set (Resonance Research, Billerica, MA, USA), capable of a maximum output of 300 mT m-1, and were driven by Techron 7700 amplifiers (Techron Inc., Elkhart, IN, USA). Rf excitation was accomplished using either a quadrature driven birdcage coil (Morris Instruments, Ottawa, ON, Canada), or an 8-tum laboratory-built solenoid coil, driven by an ENI LPI-10 1000 W amplifier or a Matec Model 525 class-C amplifier. 

If the density does not change significantly with concentration, the specific viscosity tjsp — t/tg — 1 can be approximated from the times measured for the solution (f) and solvent (f0). The dimension of the bore diameter of the capillary needs to be chosen carefully to minimize kinetic corrections. A detailed discussion of correction effects and other pitfalls can be found in the book by Van Wazer et al. [24]. 

In solenoid magnets, the clear bore diameter (the inner diameter of the innermost magnet former) is the usual information needed. The diameter may range from a few millimetres to a few metres. A diameter around 30-50 mm is typical for the use with a dilution refrigerator. 

These engines operate at speeds of 500 to 1,000 RPM and can develop 100 to 200 hp per cylinder with cylinder bore diameters up to 12 inches. Small stationary and marine power plants can be medium-speed engines. Also, railroad engines can be of this type. 

These engines operate at up to 500 rpm and can develop 1,000 hp at cylinder speeds of 80 to 150 rpm. Cylinder bore diameter measurements can be up to 36 inches. These engines are limited primarily to large stationary and marine power plants. 

Small Arms. They include guns with bore diameter not exceeding an arbitrary assigned limit which is, at present, 30mm (Ref 45f,... 

Cage of Firearms. In case of a shotgun, the gage is expressed as the number of Lead balls of the diameter of the bore required to weigh 1 lb. Thus a 12 gage shotgun has a bore diameter of 0.729 inch because 12 lead balls of 0.729 inch diam weigh 1 lb... 

Groove Diameter of a rifled weapon is measured from the bottom of one groove to the bottom of that opposite or, in case an odd number of these are employed, calculated as equalizing the diam of the bore (See "Bore Diameter in Vol 2 of Encycl, p B248-R) plus twice the depth of one groove, since in this instance these are so distributed that no one ever directly faces another Ref Hayes (1938), 194... 

Gun characteristics viz caliber or bore diameter, shot travel or barrel length, effective chamber capacity and ballistic efficiency of the gun (%). 

The strengthening effect of a monobloc cylinder due to autoffettage practically is achieved by two effects First the introduction of the compressive (tangential) residual stresses which extend the elastically admissible internal pressure and second the increased available material strength by strain hardening. The maximum admissible pressure for optimum autoffettaged cylinders based on perfectly elastic-plastic materials, completely elastic stress (plus/minus) conditions at the inner bore diameter and the assumption of the GE-hypothesis can be calculated as [11]. 

Fig. 4.3-6. Reduction of the stresses at the inner bore diameter by autoffettage (schematical) left residual stress right operational stresses after pressurization.

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