Lesson 1Safe pressure ranges an' regulator settings summary fi typical mild steel plate cutsSummarizes safe oxygen an' fuel pressure ranges fi mild steel plate, correct regulator adjustment, an' gauge reading. Emphasizes avoidin' overpressure, backfire, an' poor cut quality through stable, well-balanced settings dat keep tings smooth.
Typical pressures by plate thicknessSetting an' balancing regulatorsReading an' interpreting gaugesAdjusting fi preheat an' piercingRecognizing unsafe pressure signsLesson 2Metallurgy basics of carbon/mild steel relevant to oxy-fuel cutting (thickness, oxidation, heat-affected zone)Introduces basic metallurgy of carbon an' mild steel relevant to oxy-fuel cutting. Explains oxidation, heat-affected zone behavior, thickness effects, an' how composition an' microstructure influence cut quality an' distortion in a straightforward way.
Carbon content an' steel categoriesRole of iron oxidation in cuttingHeat-affected zone an' hardnessThickness, mass, an' heat flowEffects on distortion an' warpingRecognizing metallurgical defectsLesson 3Cutting technique fi straight, square cuts (torch angle, travel speed, preheat/run-on, piercing)Explains torch handling fi straight, square cuts, including correct torch angle, stand-off, an' travel speed. Details preheat timing, run-on an' run-off tabs, piercing technique, an' maintaining a steady, consistent kerf line fi good results.
Torch angle an' nozzle stand-offPreheat time an' puddle formationPiercing procedures an' safetyControlling travel speed an' kerfUsing run-on an' run-off tabsMaintaining a steady hand motionLesson 4Edge cleaning an' preparation after cutting (grinding, slag removal, dimensional checks)Details post-cut edge cleaning using chipping, grinding, an' filing. Explains slag an' dross removal, deburring, an' dimensional checks wid gauges an' squares to prepare edges fi welding, fitting, or further machining wid care.
Removing slag an' dross safelyGrinding an' blending cut edgesDeburring holes an' cornersChecking squareness an' bevelMeasuring length an' straightnessPreparing edges fi weldingLesson 5Marking, layout, an' measurement techniques fi cutting rectangular frame parts (scribing, square, templates)Covers accurate layout fi rectangular frame parts using squares, scribes, an' templates. Explains datum selection, transfer of dimensions from drawings, an' marking methods dat remain visible but minimize surface damage fi precision.
Reading drawings an' dimensionsChoosing datums an' reference edgesUsing squares, tapes, an' rulesScribing an' center punching linesUsing templates an' jigsChecking diagonals an' squarenessLesson 6Pre-use inspection an' leak testing procedures (visual inspection, soap test, flashback device checks)Outlines pre-use inspection steps fi cylinders, hoses, regulators, an' torch. Explains soap solution leak testing, checking flashback devices, an' verifying valves an' connections to prevent gas leaks, flashbacks, an' equipment failure.
Visual checks of hoses an' jointsInspecting regulators an' gaugesSoap solution leak test methodTesting flashback arrestorsVerifying valve operationDocumenting an' tagging defectsLesson 7Oxy-fuel system components an' maintenance (cylinders, regulators, hoses, torch, tips, flashback arrestors)Describes oxy-fuel system components an' their functions, including cylinders, regulators, hoses, torch body, tips, an' flashback arrestors. Covers basic maintenance, cleaning, an' replacement intervals to ensure safe, reliable service every time.
Cylinder valves an' fittingsRegulators an' pressure controlHose types, color codes, an' careTorch body, mixers, an' valvesTip types, cleaning, an' wearFlashback arrestors an' check valvesLesson 8Common practical troubleshooting an' quality checks (undercut, taper, dross)Focuses on recognizing an' correcting common cut defects such as undercut, taper, drag lines, an' dross. Provides practical adjustments to speed, tip size, an' pressures, plus simple quality checks fi production work dat works.
Identifying undercut an' washoutRecognizing taper an' bevel errorsHeavy dross an' drag line causesAdjusting speed, height, an' angleCorrecting pressure an' tip issuesSimple visual an' gauge checksLesson 9Handling, storage, an' identification of cut parts (tagging, stacking, corrosion prevention)Explains safe handling an' storage of freshly cut parts, including identification, tagging, an' orientation marks. Covers stacking methods, dunnage use, an' basic corrosion prevention to protect dimensional accuracy an' traceability fi long.
Tagging an' part identificationMarking orientation an' fit-up sidesSafe lifting an' manual handlingStacking, dunnage, an' supportsShort-term corrosion protectionShop storage records an' labelingLesson 10Gas selection an' tip sizing fi common plate thicknesses (acetylene vs propane, recommended tip numbers)Covers selection of oxygen-fuel gas combinations an' tip sizes fi common mild steel thicknesses. Compares acetylene an' propane performance, an' lists typical tip numbers an' flow rates fi efficient, economical cutting wid ease.
Comparing acetylene an' propaneGas choice by thickness an' dutyManufacturer tip charts an' dataSelecting tip size an' orificeFlow rates an' preheat adjustmentEffects on cut speed an' quality
