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The tradition and the present In 1986, FOMA Bohemia, Ltd. began the manufacture of new generation of INDUX trade mark films for non-destructive material testing (NDT) of INDUX trade mark. By implementing changes in the production formula of the original NDT film, which had been manufactured since the sixties, the manufacture of film in two speed classes, R4 and R7, began. In 1995, a radical modification of the technological process took place. The utilization of controlled precipitation resulted in uniform cubic crystals (grains) of silver halides with a narrow distribution of sizes. The composition of emulsion microcrystals and their narrow size-distribution curve has become prerequisite for high speed and contrast of the film, its high resolving power and low graininess. Simultaneously the processing in the processing chemicals has been speeded up. The controlled precipitation has become the basic precondition for the stable quality of INDUX line films. In 1988-1989, the originally manufactured films of R5 and R7 speed class were completed by R2, R3, R4 and R8 speed classes to become an integral line.
Programme for industrial radiography (FOMA NDT SYSTEM) The FOMA NDT SYSTEM includes complete speed series of INDUX line films for industrial radiography, FOMADUX line processing chemicals for manual and automatic processing, automatic processors and additional assortment. The wide range of speeds and quality classes makes it possible for the user to find a film suitable for practically any type of radiographic work, using X-ray appliances and radionuclides.
Specification and use of INDUX line
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Extremely fine-grain, high-contrast, low-speed film with excellent sharpness. Designed for the detection of critical small-sized defects |
Thin-walled steel parts/products, light metal parts/products of usual thickness, plastics and composite materials in machine, electrical and aircraft industries, etc. |
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INDUX R3 |
A low-speed, high-contrast, extremely fine-grain film with excellent sharpness suitable for radiography with or without lead screens |
For inspection of electronical components, ceramical particles, castings,nuclear components, in cosmic research, aircraft and ship building industry |
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A very fine-grain, high-contrast, medium-speed film designed for the detection of small critical defects. |
Light metal and and steel castings, aircraft industry, nuclear energetics. |
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INDUX R5 |
A fine-grain, high-contrast, standard-speed film. A standard film for most applications. |
Inspection of welds and castings, general engineering, ship building industry. |
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INDUX R7 |
A fine-grain, high-contrast, high-speed film for most standard applications. |
Inspection of welds and castings, general engineering, building industry. |
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INDUX R8 |
A medium-grain, high-contrast, very high-speed film, designed for general use; an additional shortening of exposure times can be reached in combination with fluorometallic screens. |
Inspection of thick-walled castings, building industry, inspection of concrete and heavy structures. | |