Chapter 5 Gas welding & cutting

Transcription

1 Chapter Gas welding & cutting 0-00

2 Gas welding & cutting Brazing Through the heating action of a rch flame, filler metal (solder) is drawn in the annular space of the joint. This phenomenon results from solder molecules being attracted the molecules of the base metal in the parts be assembled. Solder running wards heat sourcer Heat source Heat source Braze welding Braze welding is used assemble two parts made of the same or dissimilar types of base metal, without melting the base metal, using a filler metal with a melting temperature lower than the one of the base metals. This is a gradual welding operation where the filler metal moves as welding progresses. The technique is used assemble steel, galvanised steel, copper, copper alloys and repair cast iron. Welding Welding consists of an assembly operation in which the base metal of the parts assemble is heated coalescence form the joint. Depending on the thickness, welding can be achieved under conditions that may or may not be welding conditions, strictly speaking: the hottest flame ( 0 C), the easiest adjust, the strongest per unit of area, the most oxide-reducing, can cause inclusions. Solder penetrated end of inner tube Copper Steel Steel Steel BROX Steel Choice of flame Using a neutral flame (equal mixture of oxygen and acetylene) is often preferable, especially when assembling metals that oxidise easily at high temperatures. Due its chemical and thermal characteristics, the oxy-acetylene flame offers the best compromise between flexibility and performance. To achieve very high-quality brazing or braze welding, depending on the flame adjustment, the flame can easily be neutral. An oxy-propane or air-propane flame cannot be used obtain a reduction flame. It can be used only for soft soldering. Flame adjustment For braze welding, only an oxy-acetylene flame can be used. The flame should be adjusted so that there is slightly more oxygen for bronze, brass and galvanised steel. For others the flame should be neutral. Oxy-acetylene flame Primary flame Reduction zone 00 C Calorific value: Oxy-propane flame = 80 C Air-propane flame = 90 C Streamer flame

3 0 0 0 ACETYLENE 0 bar 0, ACETYLENE 0, 0, bar 0 ACETYLENE bar 0 ACETYLENE 0, bar, 0, PYROSAF 00 Additional recommendations: Secure the gas cylinders before use either at the workstation or on a suitable trolley. Use appropriate personal safety equipment: goggles, gloves, apron. Quick-action couplings Maintenance D - Check that coupling D are securely fastened. E - Check leaktightness* in use at service pressure, E first with coupler secured, then disconnected. Golden rules Always replace if an incident has occurred (crushing, damage) or in case of malfunctioning (leak, pressure loss) Pressure regular Maintenance A - Check threads ensure they are leaktight*. A B - Check pressure gauges. C - Turn adjustment knob after opening gas valve and check that pressure rises gradually. C Golden rules Never lubricate. SYMAP** recommends replacing pressure regulars after no more than five years of service even if they are still operating correctly. - Hoses Maintenance Inspect the entire length of the hose by bending it make sure it is in good condition. Check for splits, cracking and swelling. Golden rules SYMAP** recommends replacing hoses after three years of intensive use, otherwise once every five years.. B A Flashback arresrs These are vital safety parts as Torch they prevent flame flashback end and gas mixture if the rch malfunctions. They must be placed as closely - TO PREVENT FLASHBACK Shock wave closes valve as possible the rch or be Sintered filter sps flame Sintered filter (flame arresr) Spring built on the handle. Torch Golden rules end Always replace if flashback or damage has occurred. SYMAP** recommends replacing flashback arresrs after no more than three years of service, even if they are still in good condition. - Torch - NORMAL OPERATION Gas flow opens valve Maintenance F - Check inlet connecrs. G - Check valves ensure they are leaktight*. H - Check that nozzle or cutting tip is in good condition G and check for any leakage. Golden rules SYMAP** recommends replacing the rch after no more than five years of service, even if it is still operating correctly. Gas flows through sintered filter Spring Valve open H NORMAL DIRECTION OF GAS FLOW NORMAL DIRECTION OF GAS FLOW F Valve closed (non-return action) Regular end Regular end * To check leaktightness, use our BUBBLE leak detecr, Cat. no. W ** SYMAP: Syndicat de la machine-outil du soudage (french association of welding companies)

4 Welding blowpipes and nozzles Welding blowpipes EN 7 Standard Integrated Flash Back Arresrs Designation Including set of tips and star - VARIAL VARIAL VARIAL 00 C SPEEDFIRE S VARIAL VARIAL 000 C 7-00 l/h Welding thickness mm coupling Fixed hose tail M x 00 + hose tail Hose tail Hose tail M x 0 + hose tail Ø 0 mm Applications For all fine works: goldsmithing, dental technics, model making. For all works concerning welding, brazing and braze welding: car bodyworks repair, boiler making, maintenance shops, plumbing... For all heat traitments, shaping and boiler making. Tips and nozzles for welding blowpipes For VARIAL 00 (acetylene*) For VARIAL 00, SPEEDFIRE S, VARIAL 00 C (acetylene*) For VARIAL 000 (acetylene*) Nozzle Star 0 00 l/h Nozzle Star 0 00 l/h Deformable nozzle Nozzle Star l/h l/h Nozzle ( nozzles kit) 7-08 l/h Nozzle Deformable nozzle Kit AD 7 nozzles l/h Nozzle Kit AD 7 nozzles 78-0 * tips for other gases available: consult us Nut for swagged welding nozzles: M x R Cat no. 7-0

5 Cutting rches and nozzles Manual cutting rches Integrated Flash Back Arresrs Designation Angle Cutting capacity mm Coupling Length mm Applications PYROCOPT PYROCOPT G W W * For special extra length: consult us ALCOPT G* ALCOPT G C* - SPEEDFIRE C Acetylene - SPEEDFIRE C Propane Consult us 90 0 G 90 IC 90 G 90 IC M x 00 + hose tail M x 0 + hose tail Ø 0 mm M x 0 + hose tail Ø 0 mm with hose tail Ø 0 mm with hose tail Ø 0 mm 0 Cutting of fine sheet, plumbing, small works... 0 Worksites Maintenance, shops, boiler making, general steel construction. Cutting nozzles for manual cutting rches For PYROCOPT 0 For PYROCOPT G, ALCOPT G, ALCOPT G C and SPEEDFIRE C Gauge in mm Cutting thickness in mm Acetylene / / / Cutting Gauge G nozzles thickness IC nozzles in mm in mm Acetylene Tetrene Acetylene Tetrene W W /0-0 W W 000 W W /0 0- W W 000 W W /0-0 W W 000 W W / W W W W / W W W W / W W W W / W W 000 Propane Natural gas Propane Natural gas W W /0-0 W W W W /0 0- W W W W /0-0 W W W W / W W W W / W W 000 W W / W W 000 W W / W W 000

6 Heating rches and regulars Heating rches Designation Gas - VARIAL G (without nozzle) W SPEEDFIRE H* FIXAL G (without nozzle) - FIXAL GR (without nozzle) W Acetylene or Propane Tetrene Propane Natural gas Propane Tetrene Propane Tetrene l/h coupling M x 0 + hose tails Ø 0 mm M x 0 + hose tails Ø 0 mm M x 0 + hose tails Ø 0 mm M x 0 + hose tails Ø 0 mm Length mm Applications Brazing of large workpieces, highly localised heating, shaping. Heat shrink, heat treatment, descaling, preheating and shaping. Heat shrink, heat treatment, descaling, preheating and shaping. * Delivered with P nozzle. Tips for heating rches Tips for VARIAL G Type Gas l/h Flame # Thread FP Single flame Propane Tetrene FP M x FP Multi flame Acetylene Multi Propane M x 0 - Tips for SPEEDFIRE H 000- Type Gas l/h Flame # Thread PM Multi flame Propane PM Fe / x UNS PM 7 Type 7 - Tips for FIXAL G Gas l/h Flame # Thread Tetrene T 07-0 Multi flame Tetrene T Propane P M x Tips for FIXAL GR Type Gas l/h Flame # Thread Multi flame Tetrene T Propane P M 8 x

7 Pressure regulars For high flow and HP regulars, consult us OXYJUNIOR OXYJUNIOR regular with membrane, light weight, ideal for portable cylinders type OXYFLAM, ROLLERFLAM. (conform ISO EN 0) Gas Type Pressure in bar Cylinder in Nm /h Standard With protection Oxygen Acetylene - standard with protection standard with protection NF-F.. NF-H M x 0 R + hose tails M x 0 L + hose tails EUROSAF For industrial applications with B 0 and B 0 cylinders. Integrated and non accessible valve. State of origin is guaranteed by a sealing sticking label. End of pisn stroke limits the adjusting range. Pressure regular adjusting knob which cannot be removed. Security pressure gauges (in case of overload there won t be any ejected parts) Gas Pressure in bar in Nm /h Cylinder - Oxygen NF-F M x 0 R + hose tails Ø 0 mm - Acetylene - Compressed air NF-H NF-A (stirup) NF-B M x 0 L + hose tails Ø 0 mm M x 0 R + hose tails Ø 0 mm - Neutral gas NF-C M x 0 R + hose tails Ø 0 mm - Hydrogen NF-E M x 0 L + hose tails Ø 0 mm SUPERIOR Regular with membrane. The most famous range of regulars, specially adapted yard conditions, very precised and rugged. Due its new manual tightening feature with plastic grip, no need of wrench connect or disconnect the cylinder Propane NF-E - Tetrene NF-H Gas Alim. Oxygen W Acetylene Neutral gas W W W W Nominal flowrate Nm /H at 0 bar, Nm /H at, bar, Nm /H at, bar, Nm /H at, bar Nm /H at 0 bar Max. flowrate Max. nominal pressure Nm /H 0 bar Type F 0,8 Nm /H. bar 0,8 Nm /H. bar Type A (without yoke) Type A (without yoke) 0,8 Nm /H. bar Type H Nm /H bar Type C M x 0 L + hose tails Ø 0 mm M x 0 L + hose tails Ø 0 mm M x 0 D + hose tails Ø and Ø 0 M x 0 G + hose tails Ø and Ø 0 M x 0 G + hose tails Ø and Ø 0 M x 0 G + hose tails Ø and Ø 0 M x 0 D + hose tails Ø and Ø 0 7

8 Manoflowmeters EUROSAF B armoured: Recommended for worksite applications on B0 and B0 filenders. Ruggedness due anti-shock protection. End of pisn stroke limits the adjustment range. State of origin is guaranteed by a sealing sticking label. Adjusting knob which cannot be removed. Integrated security valve not accessible EUROJET armoured: Ruggedness due anti-shock protection. End of pisn stroke limits the adjustment range. Adjusting knob which cannot be removed. Security valve. Manoflowmeters (continuous adjustment) - Neutral gas Recommended for the regulation and adjustment of the gasflow, argon and mixtures, especially for the MIG and TIG applications EN 0 Standard Oxygen Gas Gas Designation - EUROSAF Conform ISO EN 0 - EUROSAF B Conform ISO EN 0 - EUROJET ARMOURED - SUPERIOR in l/min (TIG) 0 (MIG) (TIG) 0 (MIG) W W W Pressure in bar Cylinder in Nm /h 00 0 (TIG) 0 Pression in bar Cylinder 0 (MIG) Cylinder pressure in bar 00 NF-C Connection M x 00 R Characteristics Pressure regular with pisn for applications with B 0 and B 0 cylinders. Integrated and non accessible valve. Ruggedness due anti-shock protection. End of pisn stroke limits the adjustment range. State of origin. Adjusting knob which cannot be removed. Security valve. Standard regular with membrane. - ELECTROSAF Gas CO heater 0 in Nm /h Oxygen W Nm /H NF - F Acetylene W Nm /H NF-F Acetylene NF-H Propane NF-E Neutral gas NF-C NF - A (yoke) Acetylene W Nm /H NF - H M x 0 R + hose tails Ø 0 mm M x 0 L + hose tails Ø 0 mm M x 0 L + hose tails Ø 0 mm M x 0 R + hose tails Ø 0 mm M x 0 R + hose tails Ø 0 M x 0 L + hose tails Ø QUICKFLOW pressure regular / flowmeter ( preadjusted settings) Precise, simple and easy adjustment of welding shielding gas flowrate for MIG-MAG and TIG. For TIG welding, adjustment: 0 / / / 7 / 9 / and l/min For MIG welding, adjustment: 0 / / / 8 / 0 / and l/min Designation QUICKFLOW in l/min 09-0 (TIG) 09-0 (MIG) 7- Support Valve QUICKFLOW D 9- Double QUICKFLOW (TIG) 09- (MIG) 09- (TIG) and (MIG) Cylinder pressure in bar Connection M 7 gas be brazed on pipe 8 x 0 00 NF-C M x 00 F 7 gas M x 00 Characteristics Flow regular for pipe network. To be mounted on support valve. Flow regular for pipe network. Support valve for the above of QUICKFLOW. Cylinder pressure regular with manoflowmeter. Cylinder pressure regular with manoflowmeter with two outlet s.

9 Flame sets and trolleys Sets SAF-FRO manual flame sets are supplied fully assembled. You simply connect them up by fastening screw-type connecrs or quick-action couplings. Designation Composition 0-0 Small cylinder - Welding set 0 Compact / OXYJUNIOR OXYJUNIOR acetylene and oxygen pressure regular with protection, VARIAL 00 compact welding blowpipe with built-in flash back arresr, m acetylene and oxygen hose Ø. mm, clips and goggles shade Welding set 0 Compact / EUROSAF - Welding set 0 Compact / TIPTOP Industrial cylinder ALTOP/MINITOP cylinder EUROSAF acetylene and oxygen pressure regular, VARIAL 00 compact welding blowpipe with built-in flash back arresr, m acetylene and oxygen hose Ø. mm, hose coupling - x 0 R, hose coupling - x 0 L, goggles shade. VARIAL 00 COMPACT welding blowpipe with built-in flash back arresr, m acetylene and oxygen hose Ø. mm, goggles shade. Trolleys for gas cylinders Designation Composition OXYFLAM prodige (cylinders + trolley) trolley for oxygen cylinder ( m ) and for acetylene cylinder (0.8 m ) empty cylinders Equipped OXYFLAM prodige welding set 0 OXYFLAM prodige trolley empty cylinders ROLLERFLAM (cylinders + trolley) Equipped ROLLERFLAM W W trolley for oxygen cylinder (. m ) and for acetylene cylinder (. m ) empty cylinders welding set COMPACT 0 ROLLERFLAM trolley empty cylinders Trolley OXYFLAM W B 0 trolley trolley for oxygen cylinder ( m ) and for acetylene cylinder (0.8 m ) trolley for oxygen cylinder (0 m ) and for acetylene cylinder ( or m ) 9 - B 0 trolley trolley for oxygen cylinder ( ou m ) and for acetylene cylinder ( or m ) B 0 safety trolley W trolley for oxygen/acetylene cylinder or trolley for oxy/propane cylinder Patented model with sliding support. Offer a perfect stability, an excellent handiness and a very good balance. 9

10 Hoses and flash back arresrs Hoses conform EN 9 standard The date indicated on the hose is the date of manufacture Designation Operating pressure bar Coil (0 m) Coil (0 m) Simple hose Ø. mm Acetylene Oxygen Propane Argon / neutral gas 0 W W W W W W W Simple hose Ø 0 mm Acetylene Oxygen mixte acetylene/gpl Argon / neutral gas 0 W W W W W W W Twin hoses Ø. mm Oxygen / acetylene Twin hoses Ø 0 mm Oxygen / acetylene 0 W W W W Handles Two hoses with double clips, fitted with SECURTOP rches and fitted with QUICKMATIC coupling at the other end. Designation Ø mm Destination Length in cm Two hoses oxygen and acetylen fitted with: at one end SECURTOP () for blowpipe or rch at the other end QUICKMATIC quick action coupling - Two hoses oxygen and acetylen fitted with: at one end a clip for hose tail of blowpipe or rch with integrated at the other end QUICKMATIC quick action coupling VARIAL 00 PYROCOPT 0 VARIAL G PYROCOPT G ALCOPT G VARIAL 00 C SPEEDFIRE S VARIAL 000 C ALCOPT G C SPEEDFIRE C Hose sets Two hoses with double clips, fitted with LORMATIC fe coupling at one end and fitted with union nuts M x 0 at the other end Designation Ø mm QUICKATIC fe union nuts M x 0 Length in cm Aumatic gas shut off device SECURISTOP Connection on the pressure regular outlet. Cut aumatically the gas in the event of rupture of the hoses. Do not exceed the maximum flow lengths indicated. Gas Pressure in bar in l/h Ø hose in mm Max hose length in m Connection Acetylene, propane welding Acetylene, propane cutting fe nut M x 0 L M x 0 L Oxygen welding Oxygen cutting fe nut M x 0 R M x 0 R

11 Flash Back arresrs SECURTOP 00-0/ Connection rch Connection Oxygen Fuel /8 R VARIAL 000 PYROCOPT G ALCOPT FIXAL G /8 L x 0 R x 0 L Hose Ø - 0 mm Connection on rches / R PYROCOPT 0 VARIAL / L x 00 R Hose 00-0/ x 00 L /8 R /8 R /8 L /8 L / R / R / L / L Connection between hoses Hose OX and AD + twin Hose Ø. - 0 mm Hose Ø. - 0 mm Flash Back arresrs SECURTOP-QUICKMATIC Designation Connection Oxygen Fuel SECURTOP-QUICKMATIC fe W W Hose Ø, and 0 mm QUICKMATIC fe 7-0 Flash Back arresrs SECURTOP Designed be connected on pressure regular. They are SECURTOP types: Classical SECURTOP Thermal SECURTOP are delivered with thermics security which melts in the event of flash back and releases a valve which sps the output of gas. Designation Oxygen Fuel SECURTOP classical W W 000 fe M x 0 R fe M x 0 L M x 0 R M x 0 L fe M x 0 R M x 0 R SECURTOP thermal fe M x 0 L fe /8 G M x 0 L /8 G fe /8 G /8 G 7

12 Quick action couplings and acc QUICKMATIC quick action coupling (au-closes up) Connection between hoses QUICKMATIC Ø hose (mm) Fe coupling Male coupling - fuel gases and 0 W W oxygen and 0 W W neutral gases (argon...) W W The QUICKMATIC quick action coupling (with au-closes up) are flame accssories be mounted between hoses or at the outlet fitting of pressure regulars. The fe part of the QUICKMATIC is always in the upper part of the gas flow. The QUICKMATIC s fe part allows: locking during operation aumatic sp of the gas flow when uncoupling (au-closes up coupling) Conforms the ISO 789 standard Exists also in kit Cat no. W composed with a pair of +fe couplings for oxygen and a pair of +fe couplings for fuel gases. Connection on pressure regular QUICKMATIC - fuel gases - oxygen - neutral gas (argon...) Fe coupling Male coupling Thread Cat. no. Cat. no. Ø hose (mm) M x 0 L W W /8 L W W and 0 M x 0 R W /8 R W W and 0 / R W x 00 R W W Connection on rch or blowpipe Threading Male coupling oxygen M x 0 D W fuel gases M x 0 G W TIPTOP coupling Connection on ALTOP, MINITOP cylinders and standard pressure regulars Connection without ol of the gas hose thread M x 0 on pressure regular s outlet or ALTOP and MINITOP cylinders. Designation Ø hose (mm) TIPTOP W W QUICK ARGON coupling Hose Fe thread / Connection on ALTOP cylinder for neutral gas Quick coupling without ol of the gas hose for ALTOP cylinder neutral gas. Cat. no Fe x 0

13 essories Hose tail and clips - Hose tail - Clips Ø hose (mm) Thread type Type of clips Ø hose (mm) x 00 R x 00 L clips x 0 R x 0 L single clip x 0 R x 0 L hose gathering clip Hose nipple and Double coupling Hose nipple - double threaded coupling Ø of hoses (mm) x Thread Gas x M x 0 R oxygen x M x 0 L acetylene Twin low pressure outlet for pressure regular Gas Oxygen Neutral gas Acetylene Fuel gas M x 0 R M x 0 L M x 0 R + hose tail Ø 0 mm M x 0 L + hose tail Ø 0 mm Tip cleaners Set of - Cat. no Set of - Cat. no Mirror with magnetic fixation Cat. no. W Spark lighter. Supplied with flints Cat. no. W ECO 7 economiser (hose tail Ø 0 mm) Acetylene - Cat. no Butane, tetrene and propane. Cat. no The ECO 7 economiser is placed on a work station between the pressure regular and the rch. It enables the rch be spped and restarted without modifying the operation settings. An incorporated by-pass assures an instant relighting of the rch. Accessories - Thermic protection PROTECFLAM + Thermal shield protection for walls and floors during gas welding or brazing. High durability from the two faces of fiberglass with silica feutrin and the sewn edges, Flexible, Dimensions: 00 x 80 mm Cat. no. W Cutting guide Roller type cutting guide with manual lead. Cat. no For G and IC cutting rches. Right-angle or bevel cuts: straight, curved, circular ( mm Ø). Delivered with two hose tails Ø and 7 mm. 7 - Welding table Worksurface 0 x 0 mm, height 800 mm. Cat. no New 8 - Aumatic roller for oxygas hoses TUBEREEL Aumatic roller for twin hoses diameter 8 or 0 mm. Provided without hoses Allows the operar chose the hose length suitable his application Maximum length for diameter 8 mm: 0 m Maximum length for diameter 0 mm: m Cat N : W All positions: On the ground On a wall From the ceiling

14 Gas distribution Nitrogen for safety OX OX AD AD High flow 00-7 Double panel Cat. no The double panel is for feeding welding blowpipes, heating rches (gasflow up 000 l/h) and cutting rches (thickness up 00 mm) The double panel contains: oxygen single feeder station 0 bar, fuel gas single feeder station. bar, flash back arresr ( oxygen), flash back arresr (fuel gas), QUICKMATIC fe and Ø 0 mm (oxygen), QUICKMATIC fe and Ø 0 mm (fuel gas), blue plastic coated sheet metal enclosure, quarter turn valves OX and AD with unions Triple panel Cat. no The triple panel is for supplying oxycutting machines which don't have any pressure regular incorporated and are supplied with a triple feeding (heating oxygen, cutting oxygen and fuel gas). The triple panel contains: oxygen single feeder station 0 bars, heating oxygen single feeder station bars, combustible gas single feeder station. bar, flash back arresr for heating oxygen, flash back arresr for fuel gas, LORMATIC fe and Ø 0 mm (oxygen), LORMATIC fe and Ø 0 mm (fuel gas), blue plastic coated sheet metal enclosure, quarter turn valves OX and AD with unions. 7

15 This equipment enables every workstation be fed with gas according the welding ol used. The range can be broken down in families: The Normal Flow (DN) family for supplying gas all welding ols in our range except for VARIAL G, SPEEDFIRE H and PYROCOPT G, The High Flow (GD) family for supplying gas VARIAL G, VARIAL H, FIXAL G, FIXAL GR, SPEEDFIRE H, PYROCOPT G and your special applications. Normal flow Panel,,, units or more Description Max. inlet pressure P (bar) Max. outlet pressure P (bar) Max. flowrate Diam. of suitable hoses (mm) Cat. no. Oxygen 0 Fe /8 G x 0 D. / 0 W Acetylene.. Fe /8 G x 0 G. / 0 W Fuel gas LPG Fe /8 G x 0 G. / 0 W Neutral gas 0 Fe /8 G x 0 D. / 0 W Ar/CO column flowmeter 0-8 l/min. - 0/8 l/min. Fe /8 G x 00 D. W Oxygen - 0/ l/min. Fe /8 G x 00 D. W