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Manufacturing Process > Arc Welding > Flashcards

Arc Welding Flashcards

1
Q

What is the basic concept of Arc-Welding processes?

A

Developed in the mid-1800s, electrical energy is used to produce heat, and the arc produces a temperature of about 30,000°C.

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2
Q

What are the two main types of Arc-Welding?

A
  1. Consumable Arc Welding
  2. Non-consumable Arc Welding
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3
Q

List the welding equipment used in Arc-Welding.

A
  1. AC and DC Transformer
  2. Electrode with Electrode Holder
  3. Earthling Clamps
  4. Connector
  5. Face Shield
  6. Chipping Hammer
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4
Q

In what industries is Arc-Welding commonly used?

A

General construction, shipbuilding, pipelines, and maintenance work.

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5
Q

What are the advantages of Arc-Welding?

A
  1. Low cost of equipment
  2. Can be carried out in various positions (Horizontal, Vertical, Overhead, Flat, Inclined)
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6
Q

What is a limitation of Arc-Welding?

A

Different materials cannot be welded together effectively.

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7
Q

Name the types of Consumable Electrode Arc-Welding processes.

A
  1. Shielded Metal-Arc Welding
  2. Submerged Arc Welding
  3. Gas-Metal Arc Welding (MIG)
  4. Electrogas Welding
  5. Electroslag Welding
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8
Q

Name the types of Non-consumable Electrode Arc-Welding processes.

A
  1. Gas Tungsten-Arc Welding (TIG)
  2. Atomic Hydrogen Welding
  3. Plasma Arc Welding
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9
Q

What is Shielded Metal Arc Welding (SMAW) used for?

A

It is used in general construction, shipbuilding, pipelines, and maintenance work, particularly in remote areas, for workpieces with thicknesses of 3mm-19mm.

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10
Q

What are the different types of weld joints in SMAW?

A
  1. Lap
  2. Butt
  3. Corner
  4. Edge
  5. T-joint
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11
Q

What is the difference between AC and DC welding in terms of properties?

A

Power Consumption: AC is lower; DC is higher.
Arc Stability: AC is unstable; DC is stable.
Cost: AC is cheaper; DC is more expensive.
Weight: AC equipment is lighter; DC is heavier.
Efficiency: AC is more efficient; DC is less efficient.

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12
Q

What is Submerged Arc Welding (SAW)?

A

A process where the weld zone is submerged under granular powder, with a consumable electrode (1.5mm-10mm diameter), and electric current between 300A and 2000A.

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13
Q

What are the advantages of Submerged Arc Welding (SAW)?

A
  1. High deposition rates (up to 45kg/h)
  2. High operating factors
  3. Deep weld penetration
  4. Minimal fumes
  5. Suitable for both indoor and outdoor work
  6. High speed welding of thin sheets (up to 5m/min)
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14
Q

What are the disadvantages of Submerged Arc Welding (SAW)?

A
  1. Limited to flat welding positions
  2. Flux contamination leads to porosity
  3. Requires cleaning of the workpiece before welding
  4. Slag removal needed after welding
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15
Q

What are the applications of Submerged Arc Welding (SAW)?

A
  1. Low-alloy, high-tensile steels
  2. Pressure vessels like boilers
  3. Structural shapes, earth-moving equipment, pipes
  4. Railroad construction, locomotives, shipbuilding
  5. Repairing machine parts
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16
Q

What is Gas Tungsten-Arc Welding (TIG)?

A

A process that uses a non-consumable tungsten electrode, no flux, and shielding gases like argon and helium, often preferred for materials like aluminum and magnesium.

17
Q

What are the components of the TIG welding process?

A
  1. Welding torch
  2. Power supply
  3. Electrode
  4. Shielding gas
18
Q

What is Gas Metal-Inert Gas Welding (MIG)?

A

A process that uses a consumable wire electrode fed through a nozzle, deoxidizers in the electrode metal, and different transfer modes (Spray, Globular, Short Circuit).

19
Q

What are the basic processes in MIG welding?

A
  1. Bare-wire electrode process
  2. Magnetic flux process
  3. Flux-cored electrode process

Manufacturing Process (9 decks)

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