Podcast
Questions and Answers
In order to maintain production it is acceptable to operate welding equipment beyond its rated capacity.
In order to maintain production it is acceptable to operate welding equipment beyond its rated capacity.
False
Oxygen cylinders should never be stored with flammable gases.
Oxygen cylinders should never be stored with flammable gases.
True
Gas cylinders must be chained or secured at all times.
Gas cylinders must be chained or secured at all times.
True
Skin contact with liquid oxygen can cause frostbite.
Skin contact with liquid oxygen can cause frostbite.
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Safety glasses are not required when welding with the helmet down.
Safety glasses are not required when welding with the helmet down.
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A fully charged oxygen cylinder contains approximately 225 psi at 70 degrees Fahrenheit.
A fully charged oxygen cylinder contains approximately 225 psi at 70 degrees Fahrenheit.
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A butane or propane cigarette lighter is safe around welding equipment.
A butane or propane cigarette lighter is safe around welding equipment.
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Long hair, loose fitting clothes, and ties are personal safety hazards around rotating equipment.
Long hair, loose fitting clothes, and ties are personal safety hazards around rotating equipment.
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Because of the low amount of UV light, it is NOT necessary to use shaded lenses when oxy-fuel cutting.
Because of the low amount of UV light, it is NOT necessary to use shaded lenses when oxy-fuel cutting.
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When welding, ventilation should be placed as close to the fume source as practical.
When welding, ventilation should be placed as close to the fume source as practical.
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Areas that have less than _______ cubic ft. per welder, or that have ceilings less than 16 ft. require __________.
Areas that have less than _______ cubic ft. per welder, or that have ceilings less than 16 ft. require __________.
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What is the only acceptable method for lighting oxy-fuel torches?
What is the only acceptable method for lighting oxy-fuel torches?
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What form is used to report hazardous information?
What form is used to report hazardous information?
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The selection of a correct lens shade number depends on __________.
The selection of a correct lens shade number depends on __________.
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What burn causes the skin to blister?
What burn causes the skin to blister?
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NEVER operate arc welding equipment while __________.
NEVER operate arc welding equipment while __________.
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NEVER cut or weld directly against __________.
NEVER cut or weld directly against __________.
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NEVER use __________ on gas cylinders, regulators, connections, and hoses.
NEVER use __________ on gas cylinders, regulators, connections, and hoses.
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NEVER enter a welding shop without wearing __________.
NEVER enter a welding shop without wearing __________.
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What is a burn to the eye caused by exposure to UV light from the welding arc called?
What is a burn to the eye caused by exposure to UV light from the welding arc called?
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Fuel gas hoses are usually colored __________.
Fuel gas hoses are usually colored __________.
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Vaporized metals such as zinc, cadmium, lead, chromium, beryllium are considered __________.
Vaporized metals such as zinc, cadmium, lead, chromium, beryllium are considered __________.
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Maximum safe working pressure for Acetylene is __________.
Maximum safe working pressure for Acetylene is __________.
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What are the initials of the federal organization created to ensure safe and sanitary working conditions for employees?
What are the initials of the federal organization created to ensure safe and sanitary working conditions for employees?
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What type of fire extinguisher should be used on electrical fires?
What type of fire extinguisher should be used on electrical fires?
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What are potential hazards relating to welding?
What are potential hazards relating to welding?
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When using a fire extinguisher to extinguish a fire, it should be pointed at __________.
When using a fire extinguisher to extinguish a fire, it should be pointed at __________.
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When not in use, an electrode holder, GTAW torch or MIG gun should NOT be placed in contact with a grounded metal surface.
When not in use, an electrode holder, GTAW torch or MIG gun should NOT be placed in contact with a grounded metal surface.
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Acetylene cylinders should NEVER be operated while laying on their side because acetone could be drawn into the valve, regulator, and hoses.
Acetylene cylinders should NEVER be operated while laying on their side because acetone could be drawn into the valve, regulator, and hoses.
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One should NEVER touch an electrode to a metal surface other than the workpiece because those surfaces may become electrically live.
One should NEVER touch an electrode to a metal surface other than the workpiece because those surfaces may become electrically live.
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ANSI Z49.1 allows oxygen to be used as a substitute for compressed air when necessary.
ANSI Z49.1 allows oxygen to be used as a substitute for compressed air when necessary.
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Burns are some of the most common and painful injuries in a welding shop.
Burns are some of the most common and painful injuries in a welding shop.
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Fuel gas fittings are equipped with left hand threads.
Fuel gas fittings are equipped with left hand threads.
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Gas supply is NOT a requirement for the SMAW process.
Gas supply is NOT a requirement for the SMAW process.
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What are correct statements about an E7018 electrode?
What are correct statements about an E7018 electrode?
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The distance from the molten tip of the SMAW electrode to the surface of the molten weld pool should be __________.
The distance from the molten tip of the SMAW electrode to the surface of the molten weld pool should be __________.
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Electrodes that are suitable to use in all positions include?
Electrodes that are suitable to use in all positions include?
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Which electrode would you select to produce a weld with shallow penetration?
Which electrode would you select to produce a weld with shallow penetration?
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An engine-driven generator without a rectifier produces what form of welding current?
An engine-driven generator without a rectifier produces what form of welding current?
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What group of electrodes is considered low hydrogen type?
What group of electrodes is considered low hydrogen type?
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"Arc blow" is caused by __________.
"Arc blow" is caused by __________.
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What does the term 'Duty Cycle' indicate?
What does the term 'Duty Cycle' indicate?
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When the welding machine is set to DECP, current flows __________.
When the welding machine is set to DECP, current flows __________.
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What is the largest cable size?
What is the largest cable size?
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What ability do rectifiers have?
What ability do rectifiers have?
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In North America, alternating current changes direction __________.
In North America, alternating current changes direction __________.
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In order to reduce waste and control cost, you should weld until the electrode is __________.
In order to reduce waste and control cost, you should weld until the electrode is __________.
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The last digit in the electrode classification E7018 indicates __________.
The last digit in the electrode classification E7018 indicates __________.
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The E7024 electrode can be used in __________.
The E7024 electrode can be used in __________.
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The electrode classification that indicates a deep penetrating electrode that can be used with alternating current is __________.
The electrode classification that indicates a deep penetrating electrode that can be used with alternating current is __________.
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Back stepping at the end of a weld made with the SMAW process helps to prevent crater cracking.
Back stepping at the end of a weld made with the SMAW process helps to prevent crater cracking.
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The first two digits of the electrode classification indicate the __________.
The first two digits of the electrode classification indicate the __________.
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An E6010 deep penetrating electrode belongs to __________.
An E6010 deep penetrating electrode belongs to __________.
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SMAW equipment is portable because the welding machines can be powered with gasoline or diesel engines.
SMAW equipment is portable because the welding machines can be powered with gasoline or diesel engines.
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Excessive spatter and undercutting of weld joints can be caused by current values being set too high.
Excessive spatter and undercutting of weld joints can be caused by current values being set too high.
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The E6010 Electrode is run mostly on DCEN.
The E6010 Electrode is run mostly on DCEN.
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A number 1 in the next to last digit of the electrode classification for SMAW electrodes indicates that an electrode can be used in the flat position and on horizontal flat welds only.
A number 1 in the next to last digit of the electrode classification for SMAW electrodes indicates that an electrode can be used in the flat position and on horizontal flat welds only.
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A number 2 in the next to last digit of the electrode classification on an SMAW electrode indicates the electrode may be used in all welding positions.
A number 2 in the next to last digit of the electrode classification on an SMAW electrode indicates the electrode may be used in all welding positions.
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With direct current electrode positive, the work piece is positive.
With direct current electrode positive, the work piece is positive.
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In GMAW, the shielding for the molten metal is through the use of __________.
In GMAW, the shielding for the molten metal is through the use of __________.
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GMAW is the abbreviation for __________.
GMAW is the abbreviation for __________.
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In GMAW, insufficient gas flow can cause __________.
In GMAW, insufficient gas flow can cause __________.
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A worn contact tube results in __________.
A worn contact tube results in __________.
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The benefit of copper coated electrode wires is?
The benefit of copper coated electrode wires is?
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What type of power source is used for GMAW?
What type of power source is used for GMAW?
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In GMAW, which type of metal transfer is restricted to flat position and horizontal fillet welds?
In GMAW, which type of metal transfer is restricted to flat position and horizontal fillet welds?
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What type of electrode wire is used with GMAW?
What type of electrode wire is used with GMAW?
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In GMAW, the amperage is controlled by adjusting the __________.
In GMAW, the amperage is controlled by adjusting the __________.
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In GMAW, the electrode extension is defined as the distance from the __________.
In GMAW, the electrode extension is defined as the distance from the __________.
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Which AWS electrode classification is correct for GMAW wire?
Which AWS electrode classification is correct for GMAW wire?
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Which of the following is considered an advantage of the GMAW process?
Which of the following is considered an advantage of the GMAW process?
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Electrode current is transferred to the electrode through the __________.
Electrode current is transferred to the electrode through the __________.
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What shielding gas or gas mixture will not produce spray transfer?
What shielding gas or gas mixture will not produce spray transfer?
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The contact tube should be __________.
The contact tube should be __________.
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What does the 70 indicate in ER70S-3 stand for?
What does the 70 indicate in ER70S-3 stand for?
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Excessive amounts of weld spatter at the nozzle may cause __________.
Excessive amounts of weld spatter at the nozzle may cause __________.
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Which of the following is not recommended when welding with short-circuiting transfer?
Which of the following is not recommended when welding with short-circuiting transfer?
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Which is not an advantage of GMAW?
Which is not an advantage of GMAW?
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The transfer mode that uses low currents, low voltage, and small diameter electrode wire to weld in all positions is __________.
The transfer mode that uses low currents, low voltage, and small diameter electrode wire to weld in all positions is __________.
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What positions and types of welds can be welded using spray transfer on carbon steel?
What positions and types of welds can be welded using spray transfer on carbon steel?
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Which shielding gas or gas mixture is most often used for welding carbon steel with the short-circuiting transfer mode?
Which shielding gas or gas mixture is most often used for welding carbon steel with the short-circuiting transfer mode?
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Which one of the gases below is inert?
Which one of the gases below is inert?
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A constant voltage power supply is the most common type used for GMAW.
A constant voltage power supply is the most common type used for GMAW.
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The rate at which the arc moves along the weld joint is called the wire feed speed.
The rate at which the arc moves along the weld joint is called the wire feed speed.
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A minimum of 80% Argon is required to achieve spray transfer.
A minimum of 80% Argon is required to achieve spray transfer.
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In the electrode classification ER70S-3, the "S" stands for Short-Circuiting transfer.
In the electrode classification ER70S-3, the "S" stands for Short-Circuiting transfer.
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In the AWS electrode classification E71T-1, the digit after the dash designates __________.
In the AWS electrode classification E71T-1, the digit after the dash designates __________.
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A flux-cored electrode that protects the weld zone from contaminants with fluxing elements released from the core of the wire itself is called __________.
A flux-cored electrode that protects the weld zone from contaminants with fluxing elements released from the core of the wire itself is called __________.
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Which electrode classification identifies a filler metal that can be used in the overhead position?
Which electrode classification identifies a filler metal that can be used in the overhead position?
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Which of the following is not essential for FCAW-S?
Which of the following is not essential for FCAW-S?
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In the FCAW electrode classification E71T-1, the letter T indicates __________.
In the FCAW electrode classification E71T-1, the letter T indicates __________.
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A flux-cored electrode used with an external shielding gas is not self-shielded.
A flux-cored electrode used with an external shielding gas is not self-shielded.
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When examining a spool of filler metal to determine if it is designed for flux-cored welding, one should look for __________.
When examining a spool of filler metal to determine if it is designed for flux-cored welding, one should look for __________.
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The process produces slag-free welds.
The process produces slag-free welds.
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What type of drive rolls are used with the FCAW electrode wire?
What type of drive rolls are used with the FCAW electrode wire?
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Which of the following is not an advantage of FCAW-G?
Which of the following is not an advantage of FCAW-G?
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Of the two basic FCAW processes, one is self-shielding, and one uses __________.
Of the two basic FCAW processes, one is self-shielding, and one uses __________.
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FCAW-G indicates what type of shielding?
FCAW-G indicates what type of shielding?
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Study Notes
Welding Safety and Practices
- Operating welding equipment beyond its rated capacity is not acceptable to maintain production.
- Oxygen cylinders must be stored separately from flammable gases to prevent accidents.
- Gas cylinders should always be secured or chained to prevent tipping.
- Skin contact with liquid oxygen can result in frostbite; proper handling is essential.
- Safety glasses are required even when welding with the helmet down to protect eyes from potential hazards.
Equipment and Handling Guidelines
- A fully charged oxygen cylinder does not contain approximately 225 psi at 70°F; this is a common misconception.
- Butane or propane lighters should never be used around welding equipment due to fire hazards.
- Loose clothing, long hair, and accessories are safety hazards around rotating equipment.
- Ventilation during welding should be as close to the fume source as possible to improve air quality.
Fire and Hazard Management
- A hot work permit is necessary for any work that poses a fire hazard.
- Confined spaces must be large enough for an individual to enter and perform tasks safely.
- The maximum safe working pressure for acetylene is 15 psi, crucial for safe handling and operation.
Welding Techniques and Equipment
- Different types of electrodes (E6010, E6011, E7018) have varied applications, with E7018 suitable for all positions.
- Selecting the correct lens shade for welding is based on the amount of current being used.
- SMAW (Shielded Metal Arc Welding) is portable and can be powered by gasoline or diesel engines.
GMAW (Gas Metal Arc Welding) Insights
- GMAW uses inert and reactive gases for shielding the molten metal.
- Excessive weld spatter can occur due to poor shielding; proper gas flow is essential.
- Copper coated electrode wires lead to better arc starts and increased contact tip life.
Understanding Electrode Classifications
- In AWS classifications, the first two digits indicate the minimum tensile strength of the weld.
- A "T" in an electrode classification signifies it's designed for flux-cored welding.
- Electrode classifications also specify their suitability for different welding positions.
Common Welding Hazards
- Arc blow is caused by magnetic forces associated with direct current.
- Burns, particularly flash burns from UV exposure, are common injuries in welding environments.
- Flameless operations around acetylene cylinders are crucial to prevent drawing acetone into regulators.
Best Practices and Tips
- Always use a striker for igniting oxyfuel torches; never directly light them.
- Keep welding equipment away from grounded metal surfaces when not in use.
- Ensure that the contact tube size matches the wire diameter for optimal functionality.
General Welding Knowledge
- Understanding the shielding gas composition is critical; for example, 75% Argon and 25% CO2 is typical for carbon steel welding.
- The duty cycle indicates how long a machine can operate at its rated output in a given time, important for maintaining equipment longevity.
- Knowing the difference between self-shielded and externally shielded flux-cored wires is essential for selecting the proper electrode type for the task at hand.
Studying That Suits You
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Description
Test your knowledge of welding safety and best practices with these flashcards. Review true or false statements related to the operation of welding equipment and the handling of gas cylinders. Perfect for students and professionals in the welding field.
