NEW PRODUCTS Equipment
ACCELERATOR IRRADIATES COATINGS, CURES T H E M I N SECONDS Although radiation curing has been known for some time, only recently has commercially available equipment for production curing become available. T h e manufacturers of the Dynacote curing system believe that it is now possible for production curing to acquire a major foothold in the coatings industry that last year consumed 350 million gallons of coatings-solvents materials. T h e Dynacote is a small particle accelerator of 300 k.e.v. capacity that may be combined with a variety of conveying systems to cure instantly a variety of coatings applied to nearly any shape of substrate. Dynacote cuts curing times from hours to seconds and is claimed to make obsolete conventional solvent methods for applying coatings to metal, wood, paper, fabrics, plastics, and ceramics. In addition to the time saved during the curing operation, the new irradiation system eliminates the solvents and solvent recovery equipment, permits use of less costly monomers, and eliminates need for heat-curing ovens and space formerly devoted to equipment and storage. Of special interest is the potential for inducing new properties in coatings via irradiation. It is possible to coat an object with a paste in which a texture or design is created, and then “freeze” the texture by rapid curing. Such a coating would provide a decorative exterior and increase the strength of the underlying substrate. Dynacote systems do not require lengthy warm-up periods. T h e total turn-on time is less than 60 seconds and 95% on-stream dependability can be guaranteed. Complete maintenance and shutdown is accomplished within a three-day
period once a year. Operator training requires one working day. In trials, the Dynacote system has been successfully tried on five monomer systems: styrenated polyesters, PVC plastisols, epoxy acrylics, plastisols with styrenated polyesters, and acrylic monomers. In each case, the clue to radiation curing is an unsaturated coating material which can be guaranteed by incorporating an unsaturated monomer. For most applications the accelerator configuration shown in the photograph below is the most satisfactory. However, more intricate shapes may require additional
horns. Reliable shielding is no problem and no hazard exists when the equipment is properly installed. High voltage activates a thoriated tungsten filament which emits a stream of electrons focused by a Pierce lens, and then accelerates to 300 kv. in a re-entrant beam tube. T h e acceleration tube is under vacuum; the head itself is insulated with SF-6. After presetting voltage and current, the operator simply pushes the “start” button and the unit is operational. Radiation Dynamics, Inc. 201
(Continued on Page 86)
VOL. 5 8
NO. 8
AUGUST
1966
85
CRYOGENIC TRANSFER LINES
FINE MATERIALS EXPLODER
LITERATURE
A new series of U-type cryogenic transfer lines feature AIS1 304 stainless steel construction throughout, heliarc welded, and pretested with helium for fail-safe operation. Standard designs in the series are Models 100 and 200 rigid lines and Models 300 and 400 flexible lines. Gardner Cryogenics Corp. 202
T h e Bulldog exploder utilizes a combination of impacting plus impingement in suspension for fast reduction to 200-mesh and finer. Capacity ranges are from 3 to 60 tons per hour. T h e unit will handle plastic and sticky materials easily. T h e Pettibone Cos. 207
Glass Batcher. Descriptive brochure on the Munson Glass Batcher for formulating glasses and abrasives. Includes diagrams for seben models from 3600- to 12,000-lb. capacity. Munson Mill hIachiner) C o . 212
VlBRATlON BALL M I L L
Pump Seals. Extensive data on the selection of mechanical seals for pumps used in various applications. Featured are specific seal recommendations for oier 600 liquids Goulds Pumps, Inc. 214
A I R VIBRATOR
T h e Navco “Timed-Impact” Air Vibrator can be used on automated pneumatic flow systems handling solid materials with one impact every 10- and 20- to 60-sec. interval. Noise reduction is marked, and only one moving part is required. National Air Vibrator Co. 203
T h e mill is intended for laboratory and pilot processing, and can be quickly changed from batch to continuous flow operation. It can be used for preparifig fine dispersions and for grinding down to micron sizes. T h e Megapact laboratory mill contains two chambers, each of 300-cc. capacity, and comes in a variety of materials. Pilamec, Ltd. 20s
REDUCING ADAPTER
-4 new single unit combination coupler/adapter for joining hoses of different sizes. T h e unit can be used in-plant or on tank trucks for any type of liquid and dry material. Available in all popular sizes. Andrew Industries, Inc. 204 SUBSTRATE CLEANER
T h e Model 692 is offered for fast, uniform development and cleaning of devices and substrates. Automatic photographic-resist technique is simply operated and utilizes the standard developing and cleaning fluids. Model 692 puts wafers through five different operating cycles, including rinse and dry, and is capable of ten cycles if necessary. All cycle times are preselected, adjustable, and accurate. Kulicke and Soffa Co. 205
PROCESS DUST COLLECTOR
T h e Pulshake type collector is intended for air pollution control in foundries, cement plants, and other industries where large volumes of dust are exhausted to the atmosphere. A complete unit consists of two or more compartments, or independent groups of filter bags which are cleaned on a continuous, automatic, timed cycle through air injection. Pulverizing Machinery Div., Slick Industrial Co. 209
FLUIDIC VALVE OPERATOR§
Requiring only 0.2 p.s.i., these directional control air valves permit quick, efficient valve operation. T h e fluidic operators amplify the small air signal into an effective, quick-acting valve operating force. Miller Fluid Power Div. 210
GAS LIQUEFIER
A new, compact liquefier which produces small quantities of cryogenic fluids for research laboratories, hospitals, and pilot units. T h e liquefier is a small, counterflow heat exchanger which uses compressed gas from a conventional cylinder. After cooling, some Qf the gas condenses in a Dewar flask, producing the cryogenic fluid. Linde Div., Union Carbide Corp. 206 86
CENTRIFUGAL PUMPS
B&G Series 1512 pumps are intended for use in other-than-water applications. They feature leakproof mechanical seals, enclosed impellers, and balancing rings and relief holes to reduce thrust hydraulically. They are available in all popular sizes and materials, with or without integral motors. Bell and Gossett 21 1
INDUSTRIAL AND ENGINEERING C H E M I S T R Y
Nozzles. Sorbide nozzles are a i ailable in 27 standard stock sizes ranging from to 3 / 4 in. bore and u p to 6 in. long. T h e Korton Co 213
Utility Fans. A brochure describing ventilating fans with capacities from 3000 to 37,500 c.f.m. Applications including antifatigue ventilation, air quenching, smoke dissipation, and mill 215 cooling. AeroIent Fan Co. Drum Heaters and Coolers. Two-tier Model CLH heat exchanger for exterior heating and cooling of 55-gal. drums is described. Unit augments the Drumdean family of heaters and 216 coolers. Dean Products Co. Lubricated Plug Vahes. Bulletin P-166 lists design features and capacities OF XCF lubricated plug valves. Also illustrated are special items such as diamond and v-port plugs and multiport valves. M7-K-hl I’alve Dil., ACF Industries 217 Process Cleaning. A booklet describes the advanced Citrosolb process for cleaning of process equipment by the sequestering properties of ammoniated citric acid solutions. Chas. Pfizer & Co., Inc. 218 Diaphragm Seals. A technical information bulletin describing selection procedures and giving data for a range of diaphragm seals for the process industries. Bulletin 366 is useful for instrument engineers in the chemicaI processing, pulp paper, food, and sewage disposal industries. Mansfield & Green Div., Ametek Co. 219 Microfilters. A bulletin describing FR Series T microfilters presents flow capacity curves for gas and hydraulic fluids as well as design dimensions. Fluid Dynamics 220
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