Issue link: http://read.dmtmag.com/i/30867
GAS EQUIPMENT Oxy-Fuel Gas Cutting Oxy-fuel gas cutting (OFC) Thenoxy-fuelngasncuttingnprocessnseversnmetalnbyn utilizingnthenchemicalnreactionnofnoxygennwithnmetaln atnelevatedntemperatures.nThenrequiredntemperaturen isnprovidednbynthencombustionnofnanfuelngasnandn oxygenn(minimumn99.5%npurity).nThencuttingn actionnisnsupportednbynthenpurenoxygennstream. Thentorchnusedninnthencuttingnprocessnproducesnthen preheatingnflamenbynmixingnfuelngasnwithnoxygenn innthencorrectnproportionsntonsupportncombustion.n Itnalsonprovidesnanconcentratednstreamnofnpuren oxygenntonthenbasenplate.nThisnoxygennoxidizesn thenhotnmetalnandnremovesnitnfromnthenjointnarea. Dependingnonnthenfuelngasnselectednandnthen particularnapplication,ndifferentncuttingntipsnandn torchnmixingnchambersnarenused.nAmongnthenfueln gasesnusednarenacetylene,nFG-2™ propylene,npropane,nandnnaturalngas. ,nStarFlame™ nC, Why use OFC? nnSteelncanngenerallynbencutnfasternwhenn comparedntonmechanicalnmeans nnBasicnmanualnequipmentnisnlowncost,nveryn portable,nversatilenandnsafentonuse nnThicknandnthinnplatesncannbencutn rapidlynwithnmechanizednsystems nnEconomicalnmethodnofnplatenedgen preparationnfornbevelnoperations nnCannbenusedntoneasilyncutnrustynandnscalednplate nnOnlynmoderatenskillnisnrequirednton producenacceptablenresults Limitations nnDimensionalntolerancesnarennotnasnprecisenwhenn comparednwithnotherncuttingnprocesses. nnLimitedntoncuttingncarbonnandncastnsteels nnCarenmustnbentakenntonminimizenfirenandn burnnhazardsnresultingnfromnthenprocess. nnHardenablenandnothernspecialtynalloynmaterialsn maynrequirenpreheat,npost-heatnornbothnuponn completionnofnthencuttingnprocess.nFornoptimumn performance,ncuttingntipsnmustnbencloselynmatchedn tonthenbasenmaterialnthicknessnbeingncut. A2