Tubing manufacture

For the radiographic testing of the samples a microfocus X-ray tube, manufactured by Feinfokus, Garbsen was used. The X-ray tube has a focal spot, depending on the power, with a diameter from 5 pm to 50 pm. 

A tube manufacturer wanted to investigate the possibility for on-line measurement, calculation and presentation of eccentricity values on aluminum tubes when drawn at high velocities. Based on our experience from development of tube inspection systems [1, 2] for off-line inspection of precision tubes, a project was formulated. The main specifications for the tube manufacturing are summarized below ... 

Tube manufacturer and type Frequency, MHz Nominal power, kW Voltage, kV... 

Ultraviolet cross-linking of PVA with dichromates is the basis for its use in photoengraving, screen printing, printed circuit manufacture, and color-television tube manufacture. 

Fig. 17. Schematic representation of a commercial separation element tube manufactured by the Messerschmitt-Birlkow-Blohm Company, Munich. Terms...

Welded or seamless tubing manufactured in a large range of sizes of varied chemical compositions (sizes range V16-IO % in. o.d. inclusive for carbon and alloy material) usually not fabricated to meet any specification other than application requirements fabricated to meet exact outside diameter and decimal wall thickness. 

Caution Due to the permissible tolerance on the outside diameter immediately behind the tubing upset, the user is cautioned that difficulties may occur when wraparound seal-type hangers are installed on tubing manufactured on the high side of the tolerance therefore, it is recommended that the user select the joint of tubing to be installed at the top of the string. 

Tubes and Perforated Tubes Electrodepositing nickel non-adherently all over the curved surface of a cylinder, and then sliding off the coating, produces a tubular nickel product. Some tubes manufactured in this way are plain, but most are perforated. They are used industrially for screen printing textiles, carpets and wall paper . 

The tire and inner tube manufacturing industry has several potential areas for wastewater production, but water recycle is used extensively. The major area for water use is in processes... 

Toxic Pollutants (Kg/Mg) Tire and inner tube manufacturing ... 

The toxic pollutants present in raw wastewaters from tire and inner tube manufacturing operations are volatile organic pollutants that are used as degreasing agents in tire production. These toxic pollutants (methylene chloride, toluene, trichloroethylene) were found to be reduced to insignihcant levels across sedimentation ponds. 

Personal 8-h TWA measurements taken in 1978 and 1979 in companies where acrylonitrile-butadiene-styrene moulding operations were conducted showed levels of < 0.05-1.9 mg/nr (Burroughs, 1979 Belanger Elesh, 1980 Ruhe Jannerfeldt, 1980). In a polybutadiene rubber warehouse, levels of 0.003 ppm [0.007 mg/m ] were found in area samples area and personal samples taken in tyre plants found 0.007-0.05 ppm [0.016-0.11 mg/m ] (Rubber Manufacturers Association, 1984). In a tyre and tube manufacturing plant in the United States in 1975, a cutter man/Banbmy operator was reported to have been exposed to butadiene at 2.1 ppm [4.6 mg/m ] (personal 6-h sample) (Ropert, 1976). 

Colour televisions and similar displays are the largest commercial market for lanthanide phosphors, with over 100 million tubes manufactured a year. About 2 g of phosphor is used in each tube. The lanthanide involvement in a traditional colour TV tube works along these... 

In the tubular furnace of the steam reforming section, two elements are extremely important for performance the catalyst activity and heat transfer through the walls of the reformer tubes, which strongly influence each other. Because of problems with both in the early days, catalyst makers blamed contractors for using excessive heat fluxes, which caused deterioration of the catalysts by sintering and chemical changes. For contractors and tube manufacturers, on the other hand, the culprit was the insufficient... 

It is not possible to give a general correlation for the coefficient hf covering all types of fins and fin dimensions. Design data should be obtained from the tube manufacturers for the particular type of tube to be used. For banks of tubes in cross-flow, with plain transverse fins, the correlation given by Briggs and Young (1963) can be used to make an approximate estimate of the fin coefficient ... 

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