Chapter 5 Gas welding & cutting - Pastoriza …

1 2063-005 Chapter 5 Gas welding & cutting117 Gas welding & cutting 2001-0963551-0331877-052 BrazingThrough the heating action of a torch flame, filler metal(solder) is drawn into the annularspace of the joint. This phenomenon results from solder molecules beingattracted to the molecules of the base metal in the parts to be weldingBraze welding is used to assemble two parts made of the same or dissimilar types of base metal, without melting the base metal, using a filler metalwith a melting temperature that is lower than that of melting the base metals. This is a gradual weldingoperation where the filler metalmoves as welding technique is used toassemble steel, galvanised steel,copper, copper alloys and to repair cast consists of an assemblyoperation in which the base metalof the parts to assemble is heatedto coalescence to form the on the thickness, welding can be achieved under conditions that may or may not be weldingconditions, strictly speaking: the hottest flame (3 150 C), the easiest to adjust, the strongest per unit of area, the most oxide-reducing, can cause of flame Using a neutralflame (equal mixture of oxygen and acetylene) is often preferable, especially when assembling metals that oxidise easily at high temperatures.

2 Due to its chemical and thermal characteristics, the oxy-acetylene flame offers the best compromisebetween flexibility and performance. To achieve very high-quality brazing or braze welding ,depending on the flame adjustment, the flame caneasily be neutral. An oxy-propane or air-propane flame cannot be usedto obtain a reduction flame. It can be used only forsoft adjustment For braze welding , only an oxy-acetylene flame can be used. The flame should be adjusted so thatthere is slightly more oxygenfor bronze, brass and galvanised steel. For others the flame should be sourceHeat sourceSolder running towards heat sourcerSolder penetrated to end of inner tubeCopperOxy-acetylene flamePrimary flameReduction zone 3 100 CCalorific value: Oxy-propane flame = 2 830 C Air-propane flame = 1 950 CStreamer flameSteelSteelSteelSteelBROX1181 pressure regulatorMaintenanceA- Check threads to ensure they are leaktight*.

3 B- Check pressure Turn adjustment knob afteropening gas valve and check that pressure rules Never lubricate. SYMAP**recommends replacing pressure regulators after no more than five years of service even if they are still operating - HosesMaintenanceInspect the entire length of thehose by bending it to make sureit is in good condition. Check for splits, cracking and rulesSYMAP**recommends replacing hoses after three years of intensive use, otherwise once every five Quick-action couplingsMaintenanceD- Check that coupling are securely - Check leaktightness*in use at service pressure , first with coupler secured,then rulesAlways replace if an incident has occurred (crushing, damage) or in case of malfunctioning (leak, pressure loss).4 FlashbackarrestorsThese are vital safety parts asthey prevent flame flashback and gas mixture if the torchmalfunctions.

4 They must be placed as closelyas possible to the torch or bebuilt onto the rules Always replace if flashback or damage has occurred. SYMAP**recommends replacing flashback arrestors after no more than three years of service, even if they are stillin good - TorchMaintenanceF- Check inlet - Check valves to ensure they are leaktight*.H- Check that nozzle or cuttingtip is in good condition and check for any rulesSYMAP** recommends replacingthe torch after no more than fiveyears of service, even if it is still operating ,51,5202,5bar201030040 ACETYLENEbar0,511,5202,5 ACETYLENEPYROSAF 400 PYROSAF 400 Additional recommendations: Secure the gas cylinders before use either at the workstation or on a suitable trolley. Use appropriate personal safety equipment: goggles, gloves, endGas flows through sintered filterSpringValve open1 - NORMAL OPERATIONGas flow opens valveNORMAL DIRECTION OF GAS FLOWR egulator endTorch endSintered filter (flame arrestor)Valve closed(non-return action)Spring2 - TO PREVENT FLASHBACKS hock wave closes valve Sintered filter stops flameNORMAL DIRECTION OF GAS FLOWR egulator endACABFHG12345* To check leaktightness, use our BUBBLE leak detector, Cat.

5 No. W 000 010 963.**SYMAP: Syndicat de la machine-outil du soudage (french association of welding companies)DEChapter 51192004-8231794-0052004-8210327-066To orderFlowrate l/hnozzlekit40** 7264-200863** 7264-2009100**7264-2010160**7264-2011250 **7264-2012315**7264-2013400** 7264-2014100** 7264-3057160** 7264-3058250** 7264-3059315** 7264-3060400** 7264-3061To order120 Designation1 - VARIAL 00 For VARIAL 00 (acetylene*)7214-160010to1401 Fixed hose tail 6 mmFor all fine works:goldsmithing, dentaltechnics, Flash back Arrestors*tips for other gases available: consult us2 - VARIAL to 5M 12 x 100+ hose tail 6 mmFor all worksconcerning welding , brazing and braze welding : car bodyworksrepair, boilermaking, maintenanceshops, - SPEEDFIRE to 4 Hose tail 6 mm4 - PYROSAF 400 to 5 Hose tail 6 mm5 - PYROSAF 1000 C7265-3001250to1 0002 to 12 Hose tail 10 mmBoiler making,ship construction,pipe works(heavy industry).

6 6 - PYROSAF 1000 B7265-3000250to1 0002 to 12M 16 x 150+ hose tail 10 mmIncluding set of tips and starFlowratel/hWeldingthickness mmInlet couplingApplicationsInnovation: SPEEDFIRE the SAF wayWelding blowpipesTips and nozzles for welding blowpipes0111-0141237-0010111-0122001-02 21794-0050327-0030327-013 Nozzle0111-014 For PYROSAF 1000 C, PYROSAF 1000 B (acetylene*)0327-020 Star 250 to 1 000 l/hStar 40 to 400 l/h0111-0120111-012 For VARIAL 400, SPEEDFIRE S,PYROSAF 400 C(acetylene*)NutM 12 x 125 R for welding & cutting To orderFlowrate l/hnozzlekit250 7268-20133157268-20144007268-20155007268 -20166307268-201710007268-20197268-2012k it AD 7 tips+ starTo orderFlowrate l/hnozzlekit10 7214-2011167214-2012257214-2013407214-20 14637214-20151007214-20161407214-2017721 4-2018kit AD 6 tipsof 10 to 100 l/h)+ star7268-2000kit AD 7 tips+ starNozzleStar 10 to 100 l/h Easy to use, saving both gas and time.

7 SPEEDFIRE enables you to achieve the correct settings immediately before turning on the gas by the use of setting ranges and indexes. No risk of burning, simple action, time both gases are turned on and ignited using only one control and one-handed operation. Time and gas has different controls for adjustment and igniting /extinguishing. The operator s settings are retained and can be used again when the torch is next ignited. Note that the SPEEDFIRE torch offers the expert user the same setting facilities as a traditional torch. Increased both gases can be tumed off instantly and smoothly using only one control and one-handled operation. Deformablenozzle**Nozzle**0327-0140327-0 172001-465 FBAFBAFBAFBATo orderTo orderTo orderTo order121 Chapter 5 SPEEDFIRE Swelding blowpipeSPEEDFIRE Ccutting torchSPEEDFIRE Hheating torchDesignation1 - PYROCOPT to 50M 12 x 100+ hose tail 6 mmCutting of finesheet, plumbing,small - PYROCOPT G17608-00017622-00017623-00013 to 300M 16 x 150+ hose tail 10 ,shops,boiler making.

8 General steel - ALCOPT G14 - ALCOPT G1 C7800-00013 to 300M 16 x 150+ hose tail 10 mm5 - SPEEDFIRE CAcetylene5 - SPEEDFIRE CPropane7800-00027800-00073 to 300 FBA withhose tail 10 mm7500-00207500-00213 to 300 FBA withhose tail 10 mm7500-00237500-0025 Cuttingcapacitymm100 90 120 180 90 90 120 G1 90 IC 90 G1 90 IC 90 AngleCoupling360550450450500 LengthmmApplications0327-0300111-0410111 -0011202-0340111-0152001-340 For PYROCOPT 0 GaugeCuttingin mmthicknessin mmAcetylene0679-20055 /105-250679-201815 /1025-50 cutting nozzles for manual cutting torchesFor PYROCOPT G1, ALCOPT G1, ALCOPT G1 C and SPEEDFIRE CAcetyleneTetreneAcetyleneTetrene7018-16 887018-16287/103-107018-15907018-1607701 8-16897018-162910/1010-257018-15917018-1 6087018-16907018-163012/1025-507018-1592 7018-16097018-16917018-163116/1050-80701 8-15937018-16107018-16927018-163220/1080 -1207018-15947018-16117018-16937018-1633 25/10120-2007018-15957018-16127018-16947 018-163430/10200-3007018-15967018-1613 Propane Natural gasPropane 7018-16217018-16357/103-107018-1600-7018 -16227018-163610/1010-257018-1601-7018-1 6237018-163712/1025-507018-1602-7018-162 47018-163816/1050-807018-1603-7018-16257 018-163920/1080-1207018-1604-7018-162670 18-164025/10120-2007018-1605-7018-162770 18-164130/10200-3007018-1606-0327-033032 7-031 Manual cutting torches12345 Gaugein mmCuttingthicknessin mmIC nozzlesG1

9 NozzlesSimplicity, safety, decisive advantages: preadjusted flowrates, immediate ignition and extinction, memory Flash back ArrestorsFBAFBAFBAFBATo orderTo orderTo orderTo orderDesignation1 - VARIAL G27270-00241 200to3 000M 16 x 150+ hose tails 10 mmBrazing of large workpieces, highly localised heating, - SPEEDFIRE H7500-00301 500to6 200M 16 x 150+ hose tails 10 mmHeat shrink, heattreatment, descaling,preheating and 050 Length mmApplicationsHeating in Nm3/h1 - standard1 - standard2-withprotection2-withprotection TypeOxygenAcetyleneGas20025 Cylinder Max outletpressure in 16 x 150 R+ hose tails 6 mmM 16 x 150 L+ hose tails 6 mmOutletconnectionPressure regulatorsOXYJUNIOR regulator with membrane, light weight, ideal for portable cylinders type OXYFLAM, ROLLERFLAM.(conform to ISO EN 2503)DesignationGasFlowrateThreadin l/h1- Tips forSingle flamePropane0679-00391 200 VARIAL G2 Tetrene0679-00401 5000679-00411 800 Female Propane 0653-01523 500M 14 x 150 Multiflame7383-00111 250 Acetylene7383-00122 0007383-00133 150 Tips for heating torches0327-0540327-0240327-027 DesignationGasFlowrateThreadin l/h2- Tips for7501-00121 500 toSPEEDFIRE H2 700 Propane7501-00132 000 toFemale4 5001/2 x 257501-00143 000 toUNS6 2002000-3360111-0180111-011 Gas welding & cutting 2112120109-022 StandardWith protectionPressure in barCylinderOutlet122To orderTo orderTo order123 Chapter 50964-10040964-10001540NF-F0964-10010964 -10050964-10510964-10600964-10610964-107 00964-10710964-10300964-1040640154045120 1010NF-HNF-A (stirup)

10 NF-BNF-CNF-ENF-ENF-HFlow-rateNm3/h1 -Oxygen1 -Acetylene1 -Compressedair1 -Neutral gas1 -Hydrogen2 -Propane2 connectionM 16 x 150 R+ hose tails 10 mmM 16 x 150 L+ hose tails 10 mmM 16 x 150 R+ hose tails 10 mmM 16 x 150 R+ hose tails 10 mmM 16 x 150 L+ hose tails 10 mmM 16 x 150 L+ hose tails 10 mmM 16 x 150 L+ hose tails 10 mmOutlet connectionEUROSAF regulator B 20 and B 50 for cylindersFor industrial applications with B 20 and B 50 cylinders. Integrated and non accessible valve. State of origin is guaranteed by asealing sticking label. End of piston stroke limits the adjusting range. pressure regulator adjusting knob which cannot beremoved. Security pressure gauges (in case of overload there won t be any ejected parts).2962-18522962-18021540NF-F2982-16 012982-16022962-160466NF-HNF-A (stirup)NF-EFlow-rateNm3 connectionM 16 x 150 R+ hose tails 10 mmM 16 x 150 L+ hose tails 10 mmM 16 x 150 L+ hose tails 10 mmOutlet connection1877-0140327-066 Armoured regulator for B 20 and B 50 cylindersMANOBLOC 3: especially manufactured for worksite application.