Oxy-fuel welding (feem ntau hu ua oxyacetylene welding, oxy welding, los yog roj welding hauv Teb Chaws Asmeskas) thiab oxy-fuel cutting yog cov txheej txheem uas siv roj gases thiab oxygen rau vuam thiab txiav hlau, feem. Fabkis engineers Edmond Fouché thiab Charles Picard tau los ua thawj tus tsim cov pa oxygen-acetylene vuam hauv xyoo 1903.[1] Cov pa ntshiab huv, es tsis txhob siv cua, yog siv los ua kom cov nplaim taws kub hnyiab kom tso cai rau qhov chaw ua haujlwm ntawm cov khoom siv (xws li steel) hauv ib cheeb tsam. Ib qho propane / pa taws kub hnyiab ntawm 2,250 K (1,980 degree; 3,590 degree F), [2] propane / oxygen nplaim taws kub hnyiab ntawm txog 2,526 K (2,253 degree; 4,087 degree F), [3] cov nplaim hluav taws kub hnyiab ntawm 2,800 degree (5,070 degree F), thiab acetylene / oxygen nplaim taws kub hnyiab ntawm 3,773 K (3,500 degree; 6,332 degree F).
Oxy-roj yog ib qho ntawm cov txheej txheem vuam qub tshaj plaws, dua li forge vuam. Nyob rau hauv xyoo tsis ntev los no nws tau obsolesced nyob rau hauv feem ntau ntawm tag nrho cov kev lag luam siv vim muaj ntau yam arc vuam txoj kev muab ntau zoo ib yam khoom siv weld zog thiab ceev daim ntawv thov. Gas welding tseem siv rau cov khoom siv hlau thiab hauv cov khw me me hauv tsev, nrog rau cov xwm txheej uas siv hluav taws xob (xws li, ntawm ib qho txuas txuas lossis lub tshuab hluav taws xob portable) yuav muaj teeb meem.
