Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following welding processes:1. T...
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Consider the following welding processes:
1. TIG welding
2. Submerged arc welding
3. Electro-slag welding
4. Thermit welding
Which of these welding processes are used for welding thick pieces of metals?
- a)1, 2 and 3
- b)1, 2 and 4
- c)1,3 and 4
- d)2, 3 and 4
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Consider the following welding processes:1. TIG welding 2. Submerged ...
Correct Answer :- d
Explanation : The three main welding techniques that are used in a shipyard are as follows:
Arc Welding
Gas Welding
Resistance Welding
Electro-slag welding is used for joining thick materials in the vertical plane. It is not an arc process, depending on the electrical resistivity of molten flux to produce the heat necessary to melt both filler and base metal. As the flux melts, a slag blanket (2.5–3.8 mm thick) is formed.
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Consider the following welding processes:1. TIG welding 2. Submerged ...
Welding Processes for Welding Thick Pieces of Metals
The correct option for the welding processes used for welding thick pieces of metals is D, which includes TIG welding, Electro-slag welding, and Thermit welding. Here is a detailed explanation of each process:
1. TIG Welding
Tungsten Inert Gas (TIG) welding is a welding process that uses a non-consumable tungsten electrode to produce the weld. The electrode heats the metal to the melting point, and a separate filler material is used to fill the gap between the two pieces of metal being welded. TIG welding is commonly used for high-quality welds on thin materials, but it can also be used for thicker pieces of metal.
2. Electro-slag Welding
Electro-slag welding is a welding process that uses a consumable electrode and a molten slag to create the weld. The heat generated by the electrical current melts the slag, which then melts the metal workpieces. Electro-slag welding is commonly used for welding thick pieces of metal, as it can create deep, strong welds quickly.
3. Thermit Welding
Thermit welding is a welding process that uses a chemical reaction to create the heat necessary to melt the metal workpieces. A mixture of aluminum powder and a metal oxide is ignited, creating a chemical reaction that produces a high-temperature molten metal. The molten metal is then poured into a mold around the workpieces, creating a strong, permanent weld. Thermit welding is commonly used for welding thick pieces of metal, as it can create deep, strong welds quickly.
4. Submerged Arc Welding
Submerged arc welding is a welding process that uses a continuous wire electrode and a granular flux to create the weld. The flux melts and covers the weld, protecting it from impurities and creating a strong, clean weld. Submerged arc welding is commonly used for welding thick pieces of metal, as it can create deep, strong welds quickly.
Conclusion
In conclusion, TIG welding, Electro-slag welding, Thermit welding, and Submerged arc welding are all welding processes that can be used for welding thick pieces of metal. However, the correct option for this question is D, which includes TIG welding, Electro-slag welding, and Thermit welding.
The correct option for the welding processes used for welding thick pieces of metals is D, which includes TIG welding, Electro-slag welding, and Thermit welding. Here is a detailed explanation of each process:
1. TIG Welding
Tungsten Inert Gas (TIG) welding is a welding process that uses a non-consumable tungsten electrode to produce the weld. The electrode heats the metal to the melting point, and a separate filler material is used to fill the gap between the two pieces of metal being welded. TIG welding is commonly used for high-quality welds on thin materials, but it can also be used for thicker pieces of metal.
2. Electro-slag Welding
Electro-slag welding is a welding process that uses a consumable electrode and a molten slag to create the weld. The heat generated by the electrical current melts the slag, which then melts the metal workpieces. Electro-slag welding is commonly used for welding thick pieces of metal, as it can create deep, strong welds quickly.
3. Thermit Welding
Thermit welding is a welding process that uses a chemical reaction to create the heat necessary to melt the metal workpieces. A mixture of aluminum powder and a metal oxide is ignited, creating a chemical reaction that produces a high-temperature molten metal. The molten metal is then poured into a mold around the workpieces, creating a strong, permanent weld. Thermit welding is commonly used for welding thick pieces of metal, as it can create deep, strong welds quickly.
4. Submerged Arc Welding
Submerged arc welding is a welding process that uses a continuous wire electrode and a granular flux to create the weld. The flux melts and covers the weld, protecting it from impurities and creating a strong, clean weld. Submerged arc welding is commonly used for welding thick pieces of metal, as it can create deep, strong welds quickly.
Conclusion
In conclusion, TIG welding, Electro-slag welding, Thermit welding, and Submerged arc welding are all welding processes that can be used for welding thick pieces of metal. However, the correct option for this question is D, which includes TIG welding, Electro-slag welding, and Thermit welding.
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Consider the following welding processes:1. TIG welding 2. Submerged ...
C ) bez TIG USED FOR 5 -30 MM SAW of less then 5 mm MIG for 30 - 75 ELCO. MORE THEN 75 MM
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Consider the following welding processes:1. TIG welding 2. Submerged arc welding3. Electro-slag welding 4. Thermit welding Which of these welding processes are used for welding thick pieces of metals?a)1, 2 and 3 b)1, 2 and 4 c)1,3 and 4 d)2, 3 and 4Correct answer is option 'D'. Can you explain this answer?
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