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Introduction to Welders and Skills Series

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Welder Introduction and Skills Series Illustrated Gas Welder Skills Quick Release Date: 2015 Edition Editing Items: Welder Introduction and Skills Series Content Introduction This book explains the common knowledge and necessary skills of gas welders according to the actual work needs. The main contents include: Characteristics of gas welding and gas flame, gas welding equipment and tools, gas welding wire and gas welding flux, gas welding groove and gas welding process, gas welder operation skills, gas cutting characteristics and cutting torch, gas cutting operation, examples of common gas welding processes, metal gas welding, flame brazing Features and operations, metal flame brazing, flame surfacing, gas welding, gas cutting, etc.
This book is based on practicality, summarizes experience and skills, is highly operable, and is equipped with a large number of illustrations, which is convenient for beginners to quickly master gas welding operation skills. It can be used as a study reading for technical workers in machinery manufacturing enterprises, and can also be used as an appraisal training for various occupations. Training materials for institutions and vocational and technical colleges.
Chapter 1 Features of Gas Welding and Gas Flame
1.1 Gas welding principle, characteristics and applications
1.1.1 Principle of gas welding
1.1.2 Gas welding features and applications
1.2 Thermal effects of gas welding
1.2.1 Common Structures in Steel
1.2.2 Microstructure and properties of heat affected zone in gas welding
1.2.3 Effect of oxygen and nitrogen on gas welding quality
1.3 Gases used in gas welding and gas cutting
1.3.1 Oxygen
1.3.2 Combustible gas
1.4 Gas flame for gas welding and gas cutting
1.4.1 Oxyacetylene flame
1.4.2 Oxygen LPG Flame
1.4.3 Flame used in gas welding of various metal materials

Chapter 2 Gas Welding Equipment and Tools
2.1 oxygen cylinder, acetylene cylinder, liquefied petroleum gas cylinder
2.1.1 oxygen cylinder
2.1.2 acetylene bottle
2.1.3 LPG and acrylic bottles
2.1.4 oxygen pressure reducer
2.1.5 Combustible gas pressure reducer
2.2 welding torch, cutting torch
2.2.1 Welding Torch (Torch)
2.2.2 Cutting torch
2.3 Auxiliary tools
2.3.1 Hose
2.3.2 hose connector
2.3.3 Ignition bolt
2.3.4 Goggles
2.3.5 Weld joint detector
2.3.6 Other auxiliary tools

Chapter 3 Gas Welding Wire and Flux
3.1 gas welding wire
3.1.1 Influence of chemical elements in steel welding wire on welding quality
3.1.2 Carbon structural steel and alloy structural steel welding wire
3.1.3 Stainless steel welding wire
3.1.4 Cast iron welding wire
3.1.5 Copper and copper alloy welding wire
3.1.6 Aluminum and aluminum alloy welding wire
3.1.7 Magnesium Alloy Welding Wire
3.1.8 Selection and preservation of welding wire
3.2 Gas welding flux
3.2.1 Function and classification of gas welding flux
3.2.2 Application and performance of commonly used gas welding flux
3.2.3 Chemical composition and use of common gas welding flux

Chapter 4 Gas Welding Bevel and Gas Welding Process
4.1 Types and Bevel Forms of Gas Welded Joints
4.1.1 Types of gas welding heads
4.1.2 Bevel form of gas welding head
4.2 Gas welding welding process
4.2.1 Selection of gas welding parameters
4.2.2 Gas welding process
4.2.3 Tack welding

Chapter 5 Gas Welder Operating Skills
5.1 Connection of gas welding and gas cutting equipment
5.1.1 Placement of oxygen and acetylene bottles
5.1.2 Installing an oxygen pressure reducer
5.1.3 Installation of acetylene pressure reducer
5.1.4 Connecting a welding torch or cutting torch
5.2 Ignition operation of gas welding flame
5.2.1 Open oxygen
5.2.2 Open acetylene
5.2.3 Ignition
5.2.4 Fire suppression
5.3 Left welding and right welding
5.3.1 Leftward welding method
5.3.2 Rightward Welding
5.4 Basic operation methods of gas welding
5.4.1 Adjustment of oxyacetylene flame
5.4.2 Starting welding
5.4.3 Movement of tip and wire during welding
5.4.4 Connectors and finishing
5.5 Issues that beginners should pay attention to during gas welding operations
5.6 Gas Welding Operation Technology for Butt Plates in Various Space Positions
5.6.1 Plain
5.6.2 Vertical welding
5.6.3 Horizontal welding
5.6.4 Back welding
5.7 T-joint gas welding operation technology for vertical and overhead welding
5.7.1 Vertical welding of T-shaped joints
5.7.2 Overhead welding of T-shaped joints

Chapter 6 Gas Cutting Features and Cutting Torches
6.1 Gas cutting characteristics
6.1.1 Gas cutting process
6.1.2 Conditions for oxygen cutting
6.1.3 Gas cutting performance of common metal materials
6.2 Cutting torch
6.2.1 Function and classification of cutting torch
6.2.2 Main technical data of cutting torch
6.2.3 Safe use of torch and troubleshooting methods for common faults

Chapter 7 Gas Cutting Operation
7.1 Main parameters of gas cutting process
7.1.1 Gas cutting oxygen pressure
7.1.2 Preheating Flame Energy Rate
7.1.3 Cutting nozzle tilt angle
7.1.4 Distance between cutting nozzle and cutting surface
7.1.5 Gas cutting speed
7.1.6 Determination of gas cutting sequence
7.2 Gas cutting operation skills
7.3 Manual Gas Cutting Example
7.3.1 Gas cutting of thin steel plates
7.3.2 Gas cutting of medium and thick steel plates
7.3.3 Gas cutting of multilayer steel plates
7.3.4 Gas cutting of flanges
7.4 Gas cutting of welding groove
7.4.1 Gas cutting without blunt V-shaped bevel
7.4.2 Gas cutting with blunt V-groove
7.4.3 Gas cutting on both sides of bevel
7.5 Gas cut open hole
7.5.1 Horizontal gas cutting hole
7.5.2 Vertical gas cut holes
7.6 Gas cutting of steel pipes
7.6.1 Gas cutting of rotatable steel pipes
7.6.2 Gas cutting of horizontally fixed steel pipes
7.6.3 Opening bevel of rotatable pipe
7.7 Bevel of horizontal fixed pipe
7.8 Gas Cutting of Round Steel
7.8.1 Operation method and essentials of gas cutting round steel
7.8.2 Operation Examples
7.9 Gas cutting of the riser
7.9.1 Gas Cutting of Casting Riser
7.9.2 Operation Examples
7.10 Mechanical gas cutting
7.10.1CG130 gas cutting machine
7.10.2CG2150 type contour gas cutter
7.10.3 Maintenance and maintenance of gas cutter
7.10.4 Introduction of Numerical Control Gas Cutting Machine

Chapter 8 Examples of Common Gas Welding Processes
8.1 Level welding
8.1.1 Flat welding
8.1.2 Butt welding of thin plates
8.1.3 Fillet Welding
8.2 Welding of steel plates
8.2.1 Horizontal welding
8.2.2 Vertical welding
8.2.3 Back welding
8.3 Pipe welding
8.3.1 Rotary welding of pipe butt joints
8.3.2 Gas welding of horizontally fixed pipes
8.3.3 Gas Welding of Tee
8.3.4 One-side welding and two-side forming of horizontally rotating pipe
8.3.5 Double-sided forming of vertical fixed pipe
8.3.6 Double-sided Forming of Horizontal Fixed Pipe
8.3.7 Welding of carbon steel steel pipe tensile bending parts

Chapter 9 Gas Welding of Metals
9.1 Gas welding of carbon steel
9.1.1 Classification of carbon steel and its weldability
9.1.2 General requirements for carbon steel gas welding
9.1.3 Gas welding of flat welding position of thin-walled steel plate
9.1.4 Gas welding of low carbon steel pipes
9.1.5 Gas Welding of Tee
9.1.6 Gas welding of thin-walled steel tubular container
9.1.7 Gas welding welding repair of fuel tank
9.2 Gas welding of low alloy steel
9.2.1 Gas welding of ordinary low-alloy high-strength structural steel
9.2.2 Gas welding of low-alloy pearlite heat-resistant steel
9.3 Gas welding of stainless steel
9.3.1 Weldability of Cr-Ni austenitic stainless steel
9.3.2 Gas Welding Process of Cr-Ni Austenitic Stainless Steel
9.3.3 Example of gas welding of austenitic stainless steel
9.4 Gas welding of cast iron
9.4.1 Classification and Welding Methods of Cast Iron
9.4.2 Gas welding of gray cast iron
9.4.3 Examples of gas welding of gray cast iron
9.4.4 Gas Welding of Ductile Iron
9.5 Gas welding of copper and its alloys
9.5.1 Classification and welding methods of copper and copper alloys
9.5.2 Gas welding of copper
9.5.3 Gas welding of copper pipes
9.5.4 Gas welding of brass
9.5.5 Bronze gas welding
9.6 Gas welding of aluminum and its alloys
9.6.1 Classification and weldability of aluminum and its alloys
9.6.2 Gas welding of aluminum and its alloys
9.6.3 Gas welding of conductive aluminum bars
9.6.4 Gas welding repair welding cast aluminum alloy

Chapter 10 Flame Brazing Features and Operation
10.1 Flame brazing and its characteristics
10.1.1 Flame brazing process
10.1.2 Characteristics of flame brazing
10.2 Solder
10.2.1 Aluminum-based solder
10.2.2 Silver-based solder
10.2.3 Copper-based solder
10.3 Flux
10.4 Flame brazed joint
10.4.1 Basic form of flame brazed joint
10.4.2 Joint clearance
10.4.3 Process holes for welded joints
10.5 Brazing Process
10.5.1 Cleaning before flame brazing
10.5.2 Assembly and fixing
10.5.3 Selection of Common Metal Flame Brazing Solder and Flux
10.5.4 Brazing temperature, holding time and heating speed
10.5.5 Cleaning after brazing
10.6 Basic Techniques of Flame Brazing
10.6.1 Warm up
10.6.2 Welding
10.6.3 Cleaning after welding

Chapter 11 Flame Brazing of Metals
11.1 Flame brazing of the same metal
11.1.1 Basic operations
11.1.2 Brazed pure copper damping ring and damping rod
11.1.3 Brazing of pure copper pipe
11.1.4 Gray Cast Iron Brazing
11.1.5 Brazing of stainless steel fuel hose joints
11.2 Flame brazing of dissimilar metals
11.2.1 Basic operation of dissimilar flame brazing
11.2.2 Brazing of copper pipe joints
11.2.3 Brazing of the inlet pipe joints of cooking pots
11.2.4 Brazing of carbide turning tools
11.2.5 Brazed Carbide Mills
11.2.6 Brazed heat exchanger connection
11.2.7 Brazing of Stainless Steel and Lead

Chapter 12 Flame Surfacing
12.1 Features and Applications of Flame Surfacing
12.1.1 Features of Flame Surfacing
12.1.2 Types, properties and applications of surfacing materials
12.2 Example of oxyacetylene flame surfacing
12.2.1 Flame surfacing of cobalt-based cemented carbide
12.2.2 Oxyacetylene Surfacing of Nickel-based Cemented Carbide
12.2.3 Surfacing Welding of Grained Carbide in Pipe
12.2.4 Surfacing of brass on cast iron substrate
12.2.5 Surfacing of brass on a cast steel substrate
12.2.6 Surfacing welding of bearing alloy on bearing pads

Chapter 13 Gas Welding and Gas Cutting Operation Safety
13.1 Gas welding and gas cutting safety accidents and prevention measures
13.1.1 Explosion accidents in gas welding and gas cutting and their prevention measures
13.1.2 Fire accidents in gas welding and gas cutting and their prevention measures
13.1.3 Burn and scald accidents in gas welding and gas cutting and their prevention measures
13.1.4 Poisoning accidents in gas welding and gas cutting and their prevention measures
13.2 Safety knowledge of gas welding and gas cutting operations
13.2.1 Safe Use of Equipment and Tools
13.2.2 Gas welding and gas cutting operations are safe
13.3 Labor protection for gas welders
13.3.1 Ventilation measures
13.3.2 References for personal protection measures


焊工入门与技巧丛书图解气焊工技能速成 Introduction to Welders and Skills Series

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