Seminr1

S hielded Metal Arc Welding Principles

Objectives ,[object Object],[object Object],[object Object],[object Object]

Objectives ,[object Object],[object Object],[object Object],[object Object],[object Object]

Shielded Metal Arc Welding (SMAW) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Process Capability ,[object Object]

SMAW Advantages ,[object Object],[object Object],[object Object],[object Object],[object Object]

SMAW Operating Principles ,[object Object],[object Object],[object Object],[object Object]

Welding Process ,[object Object],[object Object],[object Object],[object Object]

SMAW Operating Principle American Welding Society

Welding Power Sources ,[object Object],[object Object],[object Object],[object Object],[object Object]

Welding Power Sources ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Type of Output Slope ,[object Object],[object Object],[object Object],[object Object],[object Object]

Output Slope ,[object Object],[object Object],[object Object],[object Object]

Output Slope ,[object Object],[object Object],[object Object],[object Object],[object Object]

Four Types of Power Source ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Four Types of Power Source ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Power Sources ,[object Object],[object Object],[object Object],[object Object],[object Object]

Constant Current Welding Machines ,[object Object],[object Object],[object Object],[object Object]

Constant Current Output Slope ,[object Object],[object Object],[object Object],[object Object],[object Object]

Constant Current Output Slope Some jobs require steep volt ampere curve Other jobs use less steep volt ampere curve

Open Circuit Voltage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Open Circuit and Arc Voltage ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Open Circuit and Arc Voltage ,[object Object],[object Object],[object Object],[object Object],[object Object]

Motor Generator Welding Machines ,[object Object],[object Object],[object Object],[object Object]

Motor Generator Welding Machine Hobart Brothers Co. Sturdy steel lifting eye Large voltmeter Calibrated dial for easy, fine adjustment of heat and relation between voltage and current Outer wheel and dial for selecting desired welding range Stop button

Motor Generator Welding Machine Hobart Brothers Co. Ground cable connector Optional steel guard Heavy duty ball bearings Pressed steel bearing cap Arc welded copper squirrel cage rotor Motor stator Heavy steel fan

Motor Generator Welding Machine Hobart Brothers Co. Steel frame Fourpole "Multi Range" generator Large commutator Heavy duty metallic graphite brushes Heavy duty ball bearings Pressed steel bearing cap Arc welded steel frame

Motor Generator Welding Machine Hobart Brothers Co. Removable steel covers Heavy duty single unit steel shaft Polarity switch Welding cable connector Large ammeter Steel turret top with removable cover

Motor Generator Welding Machine for SMAW Variable voltage control Instruction on the Name plate Polarity switch Current control Toggle switch Constant voltage The Lincoln Co.

External Construction of d.c. Motor Generator Welding Machine The Lincoln Electric Co.

Internal Construction of a D.C. Motor Generator Welding Machine The Lincoln Electric Co.

Motor Generator Desirable Characteristics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Generators ,[object Object],[object Object],Generators used in the field Miller Electric Mfg. Co. The Lincoln Electric Co.

Sizes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Maintenance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Start and Stop Buttons ,[object Object],[object Object],[object Object],[object Object]

Polarity Switch ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Volt Ampere Meters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Current Controls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dual Tapped Current Control ,[object Object],[object Object],[object Object],[object Object],[object Object]

Dual Continuous Control ,[object Object],[object Object],[object Object],[object Object]

Engine Driven Generator Capable of SMAW, GTAW, SMAW, FCAW and PAC. Miller Electric Mfg. Co. Miller Electric Mfg. Co.

Remote Control ,[object Object],[object Object],[object Object],[object Object]

Air Filters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

D.C. Transformer Rectifier Welding Machines ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],The Lincoln Electric Co. Miller Electric Mfg. Co.

Transformer Rectifier Machines ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A.C. D.C. Transformer Rectifier Welding Machines ,[object Object],[object Object],[object Object],[object Object],[object Object]

A.C. D.C. Transformer Rectifier Welding Machines A 300 amp a.c. d.c. GTAW/SMAW machine. Portable SMAW/GTAW welding machine A 300 amp model shown in use The Lincoln Electric Co. The Lincoln Electric Co. Miller Electric Mfg. Co.

A.C. Transformer Welding Machines ,[object Object],[object Object],[object Object],[object Object],The Lincoln Electric Co. Miller Electric Mfg. Co

Advantages of a.c. Power Sources ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

D.C. and A.C. D.C. Inverter Welding Machines ,[object Object],[object Object],[object Object],Miller electric Mfg. Co. The Lincoln Electric Co.

Cost Comparisons: Arc Power Sources ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Multiple Operator Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],Miller Electric Mfg. Co.

Power Supply Ratings ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Current Output ,[object Object],[object Object],[object Object],[object Object]

Duty Cycle ,[object Object],[object Object],[object Object],[object Object],[object Object]

Efficiency ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Power Factor ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Power Cable ,[object Object],[object Object],[object Object],[object Object],[object Object]

Electrode and Work Cable ,[object Object],[object Object],[object Object],[object Object],[object Object],The Lincoln Electric Co.

Cable Core Construction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Work Cable ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Cable Lugs ,[object Object],[object Object],[object Object]

Work Clamps ,[object Object],[object Object],[object Object],Spring loaded C clamp Lenco dba NLC. Inc. Lenco dba NLC. Inc. Rotary type Lenco dba NLC. Inc. This clamp stops twisting and turning of welding cable where work rotates. Clamp welded to part, thus permits work clamp to be attached in seconds. It is generally used in fabricating tanks, pressure vessels, and on weld positioners.

Quick Connector ,[object Object],[object Object],This connector has cam type action that ensures positive stop and lock and cannot come loose or accidentally fall apart. Lenco dba NLC. Inc.

Metal Electrode Holders ,[object Object],[object Object],[object Object],[object Object],[object Object],Lenco dba NLC. Inc.

Metal Electrode Holders ,[object Object],[object Object],[object Object],[object Object]

Spring Type Electrode Holder Lenco dba NLC. Inc.

Short stub Electrode Holder Cable connections Special extruded copper alloy body High welding current conductance One ton pressure contact Lifeguard insulation Entirely insulated Bernard Welding Equipment Co. Holds electrodes burned to very short stub. Twist type locking device permits electrode gripping power in excess of 2,000 pounds.

Angle head Electrode Holder Jackson Products Co. Available in sizes of 400 and 600 amperes and takes electrodes from 1/16 through 5/16 inch in diameter. Shorter and lighter than other holders of comparable capacity.

Hand and Head Shields ,[object Object],[object Object],[object Object],[object Object],Fibre Metal Products Co. Hand shield so person may hold shield in front of face

Hand and Head Shields ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Fibre Metal Products Co. Fibre Metal Products Co.

Hand and Head Shields ,[object Object],[object Object],[object Object],Fibre Metal Products Co. Wilson Products Flip front welding helmet permits welder to inspect and brush weld without lifting the hood. Chrome leather helmets ideal for hard to get into areas.

Head Shield Lens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Auto darkening Electronic Filter Helmet ,[object Object],[object Object],[object Object],[object Object],[object Object],. Jackson Products Co.

Safety Glasses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],© RobCrandall/The Image Works

Protective Clothing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Department of Labor

Protective Clothing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Miller Electric Mfg. Co.

Further Protection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],References

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Editor's Notes