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Document ID (ISN)65011
CIS number 95-1505
ISBN(s) 3-89429-149-4
Year 1992
Convention or series no. Fb 642
Author(s) van den Brulle P.
Bundesanstalt für Arbeitsschutz
Title Noise emission from foundry machines II - Blasting machines, automatic moulding machines and shakeout conveyors
Original title Geräuschemission von Giessereimaschinen II - Strahlanlagen, automatische Formanlagen, Förderroste [in German]
Bibliographic information Wirtschaftsverlag NW, Postfach 10 11 10, Am Alten Hafen 113-115, 2850 Bremerhaven 1, Germany, 1992. 184p. Illus. 17 ref.
Abstract Cleaning areas in the metal industry are known for their high levels of noise. Measurements were made on 55 shot blasting machines and 6 air pressure blasting machines. With the help of secondary noise abatement measures, the sound pressure level can be lowered below 85 or even 80dB(A). Instructions to carry out these changes are available from manufacturers. The state of the art of moulding machines, core shooting machines and shake-outs has considerably changed in the last few years. A relationship was found between the quality of the noise abatement measures and the maintenance of machinery. The emission sound pressure level at the work station of well-serviced machines with adequate mufflers is around 85dB(A) for moulding and 80dB(A) for core shooting machines. The sound power level of shake-out conveyors is proportional to the area of the conveyor section and a noise reduction of about 10dB(A) can be achieved by encapsulating the conveyor section.
Descriptors (primary) noise; noise level; foundries; noise control; machinery
Descriptors (secondary) cleaning of castings; knocking out; noise level measurement; acoustic enclosure; sound shielding
Document type E - Books, reports, proceedings
Country / State or ProvinceGermany
Subject(s) Metal production and metalworking
Broad subject area(s) Physical hazards
Browse category(ies) Foundries, metalcasting and forging operations