What are cutting fluid mists and what are they used for?<\/h3>\n\n\n\n![\"refrigerants\"](\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/11\/fluides-refrigerants.jpg\")
<\/figure>\n<\/div>\n\n\n\n\nWhen milling<\/strong>, turning<\/strong>, drilling<\/strong>, etc., full-fat oils<\/strong> or emulsions (oil + water)<\/strong> are used for cooling<\/strong> and lubrication<\/strong>, to minimize tool and workpiece heating generated during machining. This has a number of advantages: reduced friction forces improve material surface quality and extend machining tool life. What’s more, the emulsion<\/strong> binds the dust<\/strong> that forms and removes it from the workpiece along with the swarf<\/strong>. <\/p>\n<\/div>\n<\/div>\n\nWhat are the risks associated with cooling lubricants?<\/h3>\n\n\n\nHowever, the use of cutting fluids<\/strong> has one major drawback. Due to high tool speeds, cutting fluid injection pressures and high temperatures, the coolant mixture is distributed in fine particles in the air. These particles<\/strong> have been shown to be to some extent hazardous to health, and can contribute to occupational illness. So it’s vital to vacuum<\/strong> them up accordingly<\/strong>. What’s more, the higher the fluid pressures and tool rotation speeds, the finer the particles emitted. <\/p>\n<\/div>\n\n\n\n\n![\"refrigerants](\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/11\/fluides-refrigerants-1.jpg\")
<\/figure>\n<\/div>\n<\/div>\n\nEmissions from cutting fluids<\/h3>\n\n\n\n![\"oil](\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/11\/brouillard-dhuile-1.jpg\")
<\/figure>\n<\/div>\n\n\n\n\nIn France, there are strictly speaking no occupational exposure limit values for aerosols of oils or cutting fluids<\/strong> (whole oils or aqueous fluids). However, in the air inhaled by operators, it is recommended not to exceed a concentration of 0.5 mg\/m3 on average, over the duration of an 8-hour work shift (see Cnam recommendation R 451). <\/p>\n\n\n\nIf hazardous substances<\/strong> are generated either in the cutting oils used or in machined metals (e.g. alloys based on Nickel, Cobalt, Titanium, etc.), it is necessary to comply with the occupational exposure limit values for these compounds specifically.<\/p>\n<\/div>\n<\/div>\n\nCoolants in the workplace<\/h2>\n\nTasks related to activities with cooling lubricants<\/h3>\n\n
When working with cooling lubricants<\/strong>, the company must ensure that the following risks are eliminated or reduced to a minimum, insofar as the state of the art allows: risks associated with skin and eye contact, absorption by the body,emission into the air<\/strong>, and fire and explosion hazards<\/strong>.<\/p>\n\nIf basic measures are not sufficient, airflow measures<\/strong> such as extraction systems<\/strong> and filter separators<\/a> or airflow systems are required.<\/p>\n\nWhich suction and filtration system for which type of aerosol?<\/h3>\n\n
The suitability of separators<\/strong> (aerosol separators, oil mist separators<\/strong>, emulsion mist separators) for cutting fluid emissions is shown in the table below.<\/p>\n\n
<\/figure>\n<\/div>\n\n\n\nWhen milling<\/strong>, turning<\/strong>, drilling<\/strong>, etc., full-fat oils<\/strong> or emulsions (oil + water)<\/strong> are used for cooling<\/strong> and lubrication<\/strong>, to minimize tool and workpiece heating generated during machining. This has a number of advantages: reduced friction forces improve material surface quality and extend machining tool life. What’s more, the emulsion<\/strong> binds the dust<\/strong> that forms and removes it from the workpiece along with the swarf<\/strong>. <\/p>\n<\/div>\n<\/div>\n\n However, the use of cutting fluids<\/strong> has one major drawback. Due to high tool speeds, cutting fluid injection pressures and high temperatures, the coolant mixture is distributed in fine particles in the air. These particles<\/strong> have been shown to be to some extent hazardous to health, and can contribute to occupational illness. So it’s vital to vacuum<\/strong> them up accordingly<\/strong>. What’s more, the higher the fluid pressures and tool rotation speeds, the finer the particles emitted. <\/p>\n<\/div>\n\n\n\n In France, there are strictly speaking no occupational exposure limit values for aerosols of oils or cutting fluids<\/strong> (whole oils or aqueous fluids). However, in the air inhaled by operators, it is recommended not to exceed a concentration of 0.5 mg\/m3 on average, over the duration of an 8-hour work shift (see Cnam recommendation R 451). <\/p>\n\n\n\n If hazardous substances<\/strong> are generated either in the cutting oils used or in machined metals (e.g. alloys based on Nickel, Cobalt, Titanium, etc.), it is necessary to comply with the occupational exposure limit values for these compounds specifically.<\/p>\n<\/div>\n<\/div>\n\n When working with cooling lubricants<\/strong>, the company must ensure that the following risks are eliminated or reduced to a minimum, insofar as the state of the art allows: risks associated with skin and eye contact, absorption by the body,emission into the air<\/strong>, and fire and explosion hazards<\/strong>.<\/p>\n\n If basic measures are not sufficient, airflow measures<\/strong> such as extraction systems<\/strong> and filter separators<\/a> or airflow systems are required.<\/p>\n\n The suitability of separators<\/strong> (aerosol separators, oil mist separators<\/strong>, emulsion mist separators) for cutting fluid emissions is shown in the table below.<\/p>\n\nWhat are the risks associated with cooling lubricants?<\/h3>\n\n
<\/figure>\n<\/div>\n<\/div>\n\nEmissions from cutting fluids<\/h3>\n\n
<\/figure>\n<\/div>\n\n\n\nCoolants in the workplace<\/h2>\n\n
Tasks related to activities with cooling lubricants<\/h3>\n\n
Which suction and filtration system for which type of aerosol?<\/h3>\n\n
![\"Oil](\"https:\/\/obera.fr\/wp-content\/uploads\/2020\/08\/filtre-compact-OILMAC.png\")
<\/a>![\"afs\"](\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/11\/afs.jpg\")
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