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Cartridge heater

Fig. 1 Coat hanger-type sheet die concept (A) (1) central inlet port (2) manifold (distributes melt) (3) island (along with manifold, provides uniform pressure drop from inlet to die lip (4) die lip (die exit forms a wide slit) and schematic of sheet die (B) (1) upper die plate (2) lower die plate (3) manifold (4) island (5) choker bar (6) choker bar adjustment bolt (7) flex die lip (8) flex lip adjustment bolt (9) lower lip (10) die bolt (11) heater cartridge. Fig. 1 Coat hanger-type sheet die concept (A) (1) central inlet port (2) manifold (distributes melt) (3) island (along with manifold, provides uniform pressure drop from inlet to die lip (4) die lip (die exit forms a wide slit) and schematic of sheet die (B) (1) upper die plate (2) lower die plate (3) manifold (4) island (5) choker bar (6) choker bar adjustment bolt (7) flex die lip (8) flex lip adjustment bolt (9) lower lip (10) die bolt (11) heater cartridge.
In (a), a design described by Vassallo and Harden (29), the furnace is heated by a heater cartridge. It has provision for rapid cooling or for use below room temperature by passing a coolant through the cooling coils which surround the furnace. Sample and reference materials are placed in glass capillary tubes. [Pg.314]

Figure 6.28. Furnace and sample chamber. A. glass capillary tube for sample B. sample-holder plate C. sample heat transfer sleeve D. sample thermocouple E. furnace block G. reference capillary tube H. reference heat transfer sleeve J, reference thermocouple K, heater cartridge. Figure 6.28. Furnace and sample chamber. A. glass capillary tube for sample B. sample-holder plate C. sample heat transfer sleeve D. sample thermocouple E. furnace block G. reference capillary tube H. reference heat transfer sleeve J, reference thermocouple K, heater cartridge.
Details of the complete EC-DTA cell are shown in Figure 11.256. The heater block, which was machined from aluminum, contained a 500 W heater cartridge located in the center of the block. Two cylindrical chambers located on each side of the heater housed the sample and reference container, respectively. Care was taken to position each container at exactly the same distance from the heater. It was found from previous DTA studies that the diameter of the con tainer cavities greatly influenced the DT A curves obtained. In this cell they were 18 mm in diameter by 38 mm in depth. [Pg.708]

The next component in the circuit is a heating unit. When the heating unit is on, it conducts heat through the metal hardware to the polymer. The most common type of heating unit is a heater band that connects onto the outside surface of the hardware. Some dies utilize heater cartridges inserted inside a hole in the hardware. Heating units are rated by power, where the amount required is determined by the mass of metal to which the unit is attached. [Pg.39]

Injection molds are machined from a variety of tool steels and then hardened or in some cases plated with chromium, nickel, or proprietary materials. Large molds use prehardened tool steels because they cannot be hardened after machining. 124 Stainless steel is employed for some smaller molds, particularly those used for optical and medical parts and for corrosion resistance. Since they provide better heat transfer and, thus, shorter molding cycles, materials such as beryllium copper are used as inserts in critical areas. Injection molds are usually cooled or heated with water, although oil or electric heater cartridges are employed for high-mold temperatures. Mold-temperature controllers pump water into the manifolds and then into cooling fine machine into the molds. [Pg.419]

Injection molds are usually cooled or heated with water, although oil or electric heater cartridges are used for high mold temperatures. Mold temperature controllers pump water into the manifolds and then into cooling Unes machined into the mold. [Pg.289]

Remove the heater block from the chuck to layout the location for the. 501 cylinder bore and the. 374 bore for the heater cartridge. Reposition the heater block in the 4-jaw chuck and step drill the cylinder bore to 31/64" diameter. TTien ream through with a. 501 chucking reamer. Set the compound rest on the lathe and turn a 45-degree chamfer edge on the cylinder bore 1/16" deep. [Pg.27]

Installing the heater cartridge is simply a matter of inserting it into the. 374" bored hole located in the heater block. See figure 45. It will be a fairly snug fit, but will still be loose enough to allow for heat expansion. [Pg.94]

In APCI, there is no spray voltage as nebulization is effected by action of the pneumatic nebulizer alone. The transformation of the aerosol into a vapor composed of solvent and highly diluted sample is then performed in a heater cartridge set to about 500°C. Although rather high temperature is used for vaporization, APCI is normally softer than conventional Cl because i) the sample does not necessarily achieve the thermal equilibrium with the heater cartridge and ii) thermalization of the ions by soft collisions provide an effective drain for the energy liberated by exothermal protonation. [Pg.605]

FIGURE 1.54 Nozzles With lateral heater cartridges, minimal cavity distance (for 64 cavities) for molding outserts with fiber reinforced PPS [27]... [Pg.63]

Heater cartridges are advantageous because of their high heating power per surface which also helps to implement small cavity spaces (Figure 1.54). [Pg.63]

Four heater cartridges of240 Volts (V), 380 Watts (W) are used to heat the blow mould eavity block. A temperature control unit with an on / off function is used to control mould temperatures during each trial. [Pg.1250]

We used a specially designed mold with interchangeable mold cavity inserts making it possible to vary the specimen thickness. The mold cavity insert has separate heater cartridges but no forced cooling. Mold cavity depths of 3.1mm, 2.6mm and 2.1mm were used in order to understand the role of plastic/insert thickness ratio... [Pg.2571]

Note that both the insulated runner and the distribution tube systems rely on a cartridge heater in the gate area to prevent premature freezing off at the gate (see Fig. 4.40). [Pg.292]

Fabrication was done by photolithography and deep reactive ion etching (DRIB). The catalyst was inserted by sputtering. Such a prepared microstructure was sealed with a Pyrex cover. The bonded micro device was placed on a heating block containing four cartridge heaters. Five thermocouples monitored temperature on the back side. A stainless-steel clamp compressed the device with graphite sheets. [Pg.278]

Such a micro reactor is compressed between a cover plate, a gasket and a base plate [11]. In the cover plate a cartridge heater is inserted. The base plate provides... [Pg.593]

Other thermal zones which should be thermostated separately from the column oven include the Injector and detector ovens. These are generally insulted metal blocks heated by cartridge heaters controlled by sensors located in a feedback loop with the power supply. Detector blocks are usually maintained at a temperature selected to minimize detector contamination from condensation of column bleed or sample components and to optimize the response of the detector to the sample. The requirements for i injectors may be different depending on the injector design and may include provision for temperature program operation. [Pg.123]

A hot press was made using a hydraulic 20 ton shop press, and two homemade aluminum heating plates. Each heating plate was drilled to accept an electric cartridge heater and a thermocouple. A temperature controller was connected to the heater and thermocouple on each heating plate. [Pg.3]

Fig. 11.2. Schematic of a thermospray interface. A cartridge heater B copper block brazed to stainless steel capillary C capillary D copper tube E ion lenses E quadrupole mass analyzer G line to rotary vane pump H ion exit aperture J source heater. Reproduced from Ref. [30] by permission. American Chemical Society, 1983. Fig. 11.2. Schematic of a thermospray interface. A cartridge heater B copper block brazed to stainless steel capillary C capillary D copper tube E ion lenses E quadrupole mass analyzer G line to rotary vane pump H ion exit aperture J source heater. Reproduced from Ref. [30] by permission. American Chemical Society, 1983.
Figure 1 shows a schematic (elevation) of the Plastofrost apparatus as modified for the present study. The two main components are the heater and the coking attachment. The heater consists of a nickel-plated copper slab in which four 300 watt cartridge heaters are enclosed. A chromel/alumel thermocouple insulated with ceramic tubing placed 5 mm beneath the top surface of the slab measures the temperature (see Fig. 1). The bead of the TC is at the centre of the slab. Figure 2 is a photograph of the assembled apparatus. Figure 1 shows a schematic (elevation) of the Plastofrost apparatus as modified for the present study. The two main components are the heater and the coking attachment. The heater consists of a nickel-plated copper slab in which four 300 watt cartridge heaters are enclosed. A chromel/alumel thermocouple insulated with ceramic tubing placed 5 mm beneath the top surface of the slab measures the temperature (see Fig. 1). The bead of the TC is at the centre of the slab. Figure 2 is a photograph of the assembled apparatus.
A microcomputer based control and data acquisition system is required to monitor the 10 thermocouples in the sample and to control the heater temperature. For the latter, the rate of change of the thermocouple in the slab was used and power to the cartridge heaters varied. Details are given by Duever (3) and in a WCPD report (4). [Pg.316]

Temperature regulation of the extraction module was accomplished through the use of a solid state controller regulating two cartridge heaters imbedded in an aluminum heater block that surrounded the extraction chambers. Fluid entering the extraction chambers was pre-heated in coils of tubing imbedded in the heater block and the extractant valves as well as the extractant lines were directly attached to the heater block to maintain temperature. [Pg.225]


See other pages where Cartridge heater is mentioned: [Pg.42]    [Pg.90]    [Pg.337]    [Pg.336]    [Pg.709]    [Pg.136]    [Pg.302]    [Pg.266]    [Pg.522]    [Pg.10]    [Pg.42]    [Pg.90]    [Pg.337]    [Pg.336]    [Pg.709]    [Pg.136]    [Pg.302]    [Pg.266]    [Pg.522]    [Pg.10]    [Pg.612]    [Pg.250]    [Pg.724]    [Pg.298]    [Pg.275]    [Pg.18]    [Pg.285]    [Pg.328]    [Pg.420]    [Pg.7]    [Pg.277]    [Pg.319]    [Pg.171]    [Pg.217]    [Pg.250]    [Pg.43]    [Pg.114]   
See also in sourсe #XX -- [ Pg.302 ]

See also in sourсe #XX -- [ Pg.37 ]




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