Some design criteria for reducing dust during the cleaning and finishing of iron castings.
Proceedings of the symposium on occupational health hazard control technology in the foundry and secondary non-ferrous smelting industries, December 10-12, 1979, Chicago, Illinois. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 81-114, 1981 Aug; :14-38
Methods intended to reduce the exposure of workers to respirable silica (14808607) dust during cleaning and finishing of castings operations, which generally generate dangerously high concentrations of this dust, were reviewed and discussed. Specific topics covered include reduction and simplification of cleaning and finishing requirements; correct molding and coremaking practices; efficient casting precleaning operations, especially shotblasting, salt bath processes, acid pickling, and other cleaning systems; and ventilated metal removal processes, especially automatic grinding, pedestal grinding, portable hand grinding, portable grinding in boots, swing frame grinding, grinding of very large castings, robots and servo arms, and other methods of metal removal. Exhaust methods used for the various manual cleaning and finishing processes were described for each process. The author concludes that the removal of dust generated by the finishing and cleaning operations of iron casting involves much more than ventilation alone, that automation could help reduce the dust hazard and simplify its control, and that metal removal should not be based on the indiscriminate use of grinding and chipping.
NIOSH-Contract; Contract-210-79-0048; Dust-control; Occupational-hazards; Dust-exposure; Respirable-dust; Foundry-sands; Exhaust-ventilation; Cast-iron-alloys; Chemical-cleaning; Mechanical-cleaning
Proceedings of the symposium on occupational health hazard control technology in the foundry and secondary non-ferrous smelting industries, December 10-12, 1979, Chicago, Illinois