Oxyfuel Gas Welding Cutting Principles of the Processes

Principles of the OFW Process Bead without Filler Metal Bead with Filler Metal 2

Principles of the OFC Process 3 Copyright 2004 Lincoln Global Inc.

Which Fuel Gas? • Acetylene • Methylacetylene-propadiene • MAPP • • • Propylene Propane

Fuel Gas Characteristics 5 Copyright 2004 Lincoln Global Inc.

Fuel Gas Characteristics - continued 6 Copyright 2004 Lincoln Global Inc.

Fuel Gas Characteristics - continued 7 Copyright 2004 Lincoln Global Inc.

Oxyfuel Gas Welding & Cutting Equipment 8 Copyright 2004 Lincoln Global Inc.

Cylinders High Pressure Hazard Safety Disc Flammable Monolithic Porous Filler Material Fusible Plugs Hollow

Oxygen Cylinder Valves CGA 540 Handwheel Packing Nut Upper Valve Seat To Oxygen Regulator

Acetylene Cylinder Valves CGA 510 Handwheel CGA 300 Packing Nut Upper Valve Seat To

Acetylene Cylinder Valves - Linde (Presti-Lite) To Acetylene Regulator CGA 510 Tank Wrench Tee

Alternate Fuel Cylinder Valves CGA 510 Handwheel Upper Valve Seat Packing Nut To Fuel

OFW & OFC Equipment Components • • • Oxygen Regulator Fuel Gas Regulator Gas

Regulators Oxygen Regulator Fuel Gas Regulator 15 Copyright 2004 Lincoln Global Inc.

OFW Equipment Combination Welding Torch with Mixer and Welding Tip 16 Copyright 2004 Lincoln

OFC Equipment Combination Cutting Torch with Cutting Attachment Straight Cutting Torch 17 Copyright 2004

Torch & Cutting Valves 18 Copyright 2004 Lincoln Global Inc.

Mixer Design Fuel Gas Oxy/Fuel Mix Oxygen Fuel Gas Equal (Positive) Pressure Mixer High

Mixer Design - Continued Equal (Positive) Pressure Mixer Torch Head Oxygen Fuel Gas Tip

OFC Head Mix Design Equal (Positive) Pressure Mixer 21 Copyright 2004 Lincoln Global Inc.

OFC Head Mix Design Injector (Low Pressure) Mixer 22 Copyright 2004 Lincoln Global Inc.

Oxyfuel Gas Welding & Cutting Regulators 23 Copyright 2004 Lincoln Global Inc.

Which Regulator? Single Stage Regulator • Use When Slight Rise in Delivery Pressure from

Single Stage Regulator Adjusting Screw Bonnet Flexible Diaphragm Primary Spring Gas To Torch Gas

Cutaway Bonnet Gas From Cylinder Pressure Gauge Adjusting Screw Secondary Spring Primary Spring Capsule

Flow Chart 27 Copyright 2004 Lincoln Global Inc.

Two Stage Regulator Primary Spring Second Stage Regulator Body Adjustable Second Stage Gas From

Cutaway Regulator Body Gas From Cylinder Secondary Spring Cylinder Pressure Gage Bonnet Adjusting Screw

Flow Chart 30 Copyright 2004 Lincoln Global Inc.

Oxyfuel Gas Welding Torch Handles, Mixers, Tubes & Tips 31 Copyright 2004 Lincoln Global

OFW Torch Handles Tip Mixer Handle Oxygen Mixed Gases Acetylene Oxygen Valve Acetylene Valve

OFW Welding Tip Information 33 Copyright 2004 Lincoln Global Inc.

OFB Brazing Tip Information 34 Copyright 2004 Lincoln Global Inc.

Air-Fuel Soldering Tips 16 GA Gas Air Adapter with Soldering Tip (Together) 16 GA

Air-Fuel Soldering Tip Information 36 Copyright 2004 Lincoln Global Inc.

Oxyfuel Gas Cutting Attachments, Cutting Torches, & Tips 37 Copyright 2004 Lincoln Global Inc.

OFC Hand Cutting Torches Combination Torch with Cutting Attachment Mixer Cutting Tip Cutting Lever

OFC Cutting Tip Information 39 Copyright 2004 Lincoln Global Inc.

OFC Torch Specialty Tips Gouging 6290 -G Gouging Tip 40 Copyright 2004 Lincoln Global

OFC Torch Specialty Tips Rivet Cutting 6290 -R Rivet Cutting Tip Tie Down Cutting

OFC Torch Specialty Tips 6290 -RW Rivet Washing Tip Rivet Washing 42 Copyright 2004

OFC Torch Specialty Tips 6290 -2 D Thin Sheet Cutting Tip Thin Sheet Cutting

Oxyfuel Gas Heating Assemblies, Tubes & Tips 44 Copyright 2004 Lincoln Global Inc.

Heating Tubes & Tips Information 45 Copyright 2004 Lincoln Global Inc.

Oxyfuel Gas Welding & Cutting Peripheral Equipment 46 Copyright 2004 Lincoln Global Inc.

Check Valves for Regulators Check Valve for the Torch 47 Copyright 2004 Lincoln Global

Oxygen Check Valve Open Oxygen Check Valve Closed Oxygen Check Valve Normal Gas Flow

Acetylene Check Valve Open Acetylene Check Valve Closed Acetylene Check Valve Normal Gas Flow

Dirty Check Valves Dirty Acetylene Check Valve Dirty Oxygen Check Valve Normal Gas Flow

Flashback Arrestors Flashback Arresters for Regulators Flashback Arresters for Torches 51 Copyright 2004 Lincoln

Normal Flow Flashback Arrestor Oxygen Flashback Arrestor Acetylene Normal Gas Flow Check Valve Flame

Reverse Flow Flashback Arrestor Oxygen Reverse Flow Flashback Arrestor Acetylene Reverse Flow Normal Gas

Flashback Arrestor Oxygen Flashback Arrestor Acetylene Flashback Normal Gas Flow Flashback Flame Quenched at

Quick Connectors for Regulators Quick Connectors for Torches 55 Copyright 2004 Lincoln Global Inc.

Hoses Red (Acetylene) Hose Nuts Have Left-Handed Threads Green (Oxygen) Hose Nuts Have Right-Handed

Hose Nuts Oxygen (Green) Hose Nuts Have Right-Handed Threads Acetylene (Red) Hose Nuts Have

OFW Pressure Drop in Hoses 58 Copyright 2004 Lincoln Global Inc.

OFC Pressure Drop in Hoses 59 Copyright 2004 Lincoln Global Inc.

Tank Wrenches Tee Wrench Tank Wrench 60 Copyright 2004 Lincoln Global Inc.

Flint Lighter 61 Copyright 2004 Lincoln Global Inc.

Tip Cleaner Two Piece One Piece 62 Copyright 2004 Lincoln Global Inc.

Slides: 62

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Cylinders High Pressure Hazard Safety Disc Flammable Monolithic Porous Filler Material Fusible Plugs Hollow Vigorously Supports Combustion 9 1/7 th Rule Shock Sensitive Oxygen Cylinder Acetylene Cylinder Copyright 2004 Lincoln Global Inc.

Oxygen Cylinder Valves CGA 540 Handwheel Packing Nut Upper Valve Seat To Oxygen Regulator Lower Valve Seat Disc Ruptures If Pressure Goes Too High 10 From Oxygen Cylinder Copyright 2004 Lincoln Global Inc.

Acetylene Cylinder Valves - Linde (Presti-Lite) To Acetylene Regulator CGA 510 Tank Wrench Tee Wrench Valve Stem Packing Nut Upper Valve Seat Lower Valve Seat 12 From Acetylene Cylinder Copyright 2004 Lincoln Global Inc.

Alternate Fuel Cylinder Valves CGA 510 Handwheel Upper Valve Seat Packing Nut To Fuel Regulator Valve Relieves Excess Pressure Then Re-seats Itself 13 Lower Valve Seat From Fuel Regulator Copyright 2004 Lincoln Global Inc.

OFW & OFC Equipment Components • • • Oxygen Regulator Fuel Gas Regulator Gas Hoses Torch Handle Mixer Welding Tips Cutting Attachment Cutting Tips Filler Metal Optional Gas Igniter 14 Copyright 2004 Lincoln Global Inc.

Mixer Design Fuel Gas Oxy/Fuel Mix Oxygen Fuel Gas Equal (Positive) Pressure Mixer High Turbulence Oxy/Fuel Mix Fuel Gas Oxygen Fuel Gas 19 Injector (Low Pressure) Mixer Copyright 2004 Lincoln Global Inc.

Which Regulator? Single Stage Regulator • Use When Slight Rise in Delivery Pressure from Full to Empty Cylinder Condition Can Be Tolerated Two Stage Regulator • Use When a Constant Delivery Pressure from Full to Empty Cylinder Condition is Required 24 Copyright 2004 Lincoln Global Inc.

Cutaway Bonnet Gas From Cylinder Pressure Gauge Adjusting Screw Secondary Spring Primary Spring Capsule Flexible Diaphragm Working Pressure Gauge Gas To Torch Regulator Body 26 Copyright 2004 Lincoln Global Inc.

Two Stage Regulator Primary Spring Second Stage Regulator Body Adjustable Second Stage Gas From Cylinder Adjusting Screw Bonnet Gas To Torch Flexible Diaphragm Secondary Spring Pre-Set First Stage Primary Spring First Stage 28 Copyright 2004 Lincoln Global Inc.

Cutaway Regulator Body Gas From Cylinder Secondary Spring Cylinder Pressure Gage Bonnet Adjusting Screw Capsule Primary Spring Capsule Flexible Diaphragm Bonnet Gas To Torch Working Pressure Gage 29 Copyright 2004 Lincoln Global Inc.

Reverse Flow Flashback Arrestor Oxygen Reverse Flow Flashback Arrestor Acetylene Reverse Flow Normal Gas Flow Built In Check Valve Stops Reverse Flow of Gas(es) Reverse Gas Flow 53 Copyright 2004 Lincoln Global Inc.