选择切割液还应包括考虑其潜在效果等工件材料机床生物环境因素试卷试题号桌.pdfVIP

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Theselectionofacuttingfluidshouldalsoincludeconsiderationssuchasitspotentialeffect

onworkpiecematerialandmachinetools,biologicalfactors,andenvironmentalfactors.

Biologicalandenvironmentaleffects.Becausethemachine-tooloperatorisusuallyinclose

proximitytocuttingfluids,theeffectsofoperatorcontactwithfluidsshouldbeofprimaryconcern.

Fumes,smoke,andodorsfromcuttingfluidscancausesevereskinreactionsandrespiratory

problems.Considerableprogressmanufacturinghasbeenmadeinensuringthesafeuseofcutting

fluidsinmanufacturingplants.

Additionally,theeffectontheenvironment,particularlywithregardtoairandwater

contamination,isveryimportant.Thishasledtoatrendtowarddrymachining,whichmayhaveits

ownadvantagesandlimitations.

Cuttingfluids,aswellasothermetalworkingfluidsusedinmanufacturingoperations,may

undergochemicalchangesastheyareusedovertime.Thesechangesmaybeduetoenvironmental

effectsortocontaminationfromvarioussources,includingchipsandmetalfinesproducedduring

machiningandtrampoil(fromhydraulicleaks,wayoilsonmachines,andlubricatingsystemsfor

machinetools).

Thesechangesinvolvethegrowthofmicrobes(bacteria,molds,andyeast),particularlyinthe

presenceofwater,adverselyaffectingthepropertiesandcharacteristicsofthefluids.

Clarification,recycling,anddisposal.Severaltechniques,suchassettling,skimming,

centrifuging,andfiltering,areavailableforclarifyingusedcuttingfluids.Recyclinginvolves

treatmentofthefluidswithvariousadditives，agents,biocides,anddeodorizers,aswellaswater

treatment(forwater-basedfluids).Disposalpract