نتایج جستجو برای: metalworking
تعداد نتایج: 463 فیلتر نتایج به سال:
Metalworking fluid (MWF) is the name given to a range of oils, emulsions and other used in metalworking processes reduce friction, heat, rust, evacuate swarf. However, most these fluids are based on finite resource - mineral oil contain biocides, thus representing an environmental threat at each life cycle stage from extraction disposal. The basic methodological approach this research was syste...
Background and aims: Mineral oils are petroleum derivatives used in metalworking processes. In recent years, considering the carcinogenicity of less refined mineral oil, two separate threshold limit values considered in recent years. The present study designed to compare the spectrometry methods of Fourier Transform Infrared (FT-IR) and ultraviolet (UV), for analysis of mineral oil. Methods: M...
Water-miscible metalworking fluids (MWFs) are capable of causing respiratory symptoms and diseases. Recently, much emphasis has been put on developing new methods for assessing respiratory exposure to MWF emulsions. The air concentrations of ingredients and contaminants of MWF and inhalable dust were measured in 10 metal workshops in southern Finland. Oil mist was determined by infra red spectr...
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