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The gases used in different types of welding would include
- a)oxygen and hydrogen
- b)oxygen, hydrogen, acetylene and nitrogen
- c)oxygen, acetylene and argon
- d)oxygen and acetylene
Correct answer is option 'D'. Can you explain this answer?
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The gases used in different types of welding would includea)oxygen and...
oxygen acetylene for steel work with the oxytorch. propane/butane/methane and occasionally even petrol for oxy cutting or brazing. as long as the fuel burns, it can be used.
pure argon or helium, or a mixture of both for TIG welding operations.
wire feeds or MIG/MAG… pure argon for aluminium and “brazing” (most panelbeaters now use brass wire with a lower melting point and less heat damage to the steel), or a mixture 0f oxygen, argon and CO2 for most other operations. a very very small proportion of oxygen, around 2%, promotes easy “striking of the arc”.
argon oxygen mixture is good for very thin steel work, where you need easy arcing, and also, for the liquid metal to retain “surface tension”. this is the MIG or Mild(steel) Inert Gas process.
addition of CO2 assists penetration, to the point where pure CO2 is used for extremely heavy welding. the liquid metal is extremely “fluid” under CO2, and this gas is definitely not suitable for overhead or vertical welding! this is the MAG or Mild Active Gas process.
then theres other types of welding that dont use gas as such…arc/stick welding uses a flux coating (except for manganese/hadfield steel rods?) that turns to gas under the heat of the arc, and also supply alloying elements for the weld metal itself. there are almost as many types of flux coatings as there are rods, and they all have their particular uses.
submerged arc welding is an extremely high current welding process, for deep penetration and usually is automated…. this lays a pile of flux down just in front of the wire feed.
similar to flux core wire on the wirefeed/mig welder, except its added separately rather than being in the wire itself.
friction welding doesnt need any type of shielding gas unless its magnesium or certain other rarely used metals.
induction welding is usually done in an inert atmosphere that may consist of anything from argon or helium to CO2 and even nitrogen.
forge welding…we heat steel up til its white hot and hammer it together… no gas required. if flux is used, its generally just sand. silicon.
vacuum welding…no gas required or it isnt a vacuum…
oh. and there is also “monatomic welding”. this uses a torch that blows hydrogen through an electric arc. the hydrogen splits into separate atoms, and recombines to produce heat…its rather strange, something like a cross between the TIG and the oxytorch. the TIG process basically superseded it. it still finds uses in certain applications.
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The gases used in different types of welding would includea)oxygen and...
Gases Used in Different Types of Welding
Welding is a process of joining two or more metal pieces by heating the surfaces to their melting point and cooling them, causing fusion. Different types of welding require different types of gases, depending on the welding process and the metals being joined.
Oxygen and Acetylene
Oxy-acetylene welding is a type of gas welding that uses a combination of oxygen and acetylene gases. The acetylene gas is used as a fuel and is ignited with a spark, while the oxygen gas is used to support combustion. This type of welding is typically used for welding thin metals and for cutting and brazing tasks.
Oxygen and Hydrogen
Oxy-hydrogen welding is a type of gas welding that uses a combination of oxygen and hydrogen gases. The hydrogen gas is used as a fuel and is ignited with a spark, while the oxygen gas is used to support combustion. This type of welding is typically used for welding thin metals, such as aluminum, and for brazing tasks.
Oxygen, Hydrogen, Acetylene, and Nitrogen
Gas welding can also use a combination of oxygen, hydrogen, acetylene, and nitrogen gases, depending on the specific welding process and the metals being joined. For example, oxy-hydrogen welding can be used for welding aluminum, while oxy-acetylene welding can be used for welding steel.
Oxygen and Argon
TIG welding, also known as gas tungsten arc welding, uses a combination of oxygen and argon gases. The oxygen gas is used to support combustion, while the argon gas is used to create a protective shield around the weld pool, preventing contamination from the surrounding air. This type of welding is typically used for welding thin metals, such as aluminum and stainless steel.
Conclusion
In conclusion, the gases used in different types of welding vary depending on the welding process and the metals being joined. Oxygen and acetylene are commonly used for oxy-acetylene welding, while oxygen and hydrogen are commonly used for oxy-hydrogen welding. Other gases, such as nitrogen and argon, may also be used depending on the specific welding process and the metals being joined. However, the correct answer to the given question is option D, which states that oxygen and acetylene are the gases used in different types of welding.
Welding is a process of joining two or more metal pieces by heating the surfaces to their melting point and cooling them, causing fusion. Different types of welding require different types of gases, depending on the welding process and the metals being joined.
Oxygen and Acetylene
Oxy-acetylene welding is a type of gas welding that uses a combination of oxygen and acetylene gases. The acetylene gas is used as a fuel and is ignited with a spark, while the oxygen gas is used to support combustion. This type of welding is typically used for welding thin metals and for cutting and brazing tasks.
Oxygen and Hydrogen
Oxy-hydrogen welding is a type of gas welding that uses a combination of oxygen and hydrogen gases. The hydrogen gas is used as a fuel and is ignited with a spark, while the oxygen gas is used to support combustion. This type of welding is typically used for welding thin metals, such as aluminum, and for brazing tasks.
Oxygen, Hydrogen, Acetylene, and Nitrogen
Gas welding can also use a combination of oxygen, hydrogen, acetylene, and nitrogen gases, depending on the specific welding process and the metals being joined. For example, oxy-hydrogen welding can be used for welding aluminum, while oxy-acetylene welding can be used for welding steel.
Oxygen and Argon
TIG welding, also known as gas tungsten arc welding, uses a combination of oxygen and argon gases. The oxygen gas is used to support combustion, while the argon gas is used to create a protective shield around the weld pool, preventing contamination from the surrounding air. This type of welding is typically used for welding thin metals, such as aluminum and stainless steel.
Conclusion
In conclusion, the gases used in different types of welding vary depending on the welding process and the metals being joined. Oxygen and acetylene are commonly used for oxy-acetylene welding, while oxygen and hydrogen are commonly used for oxy-hydrogen welding. Other gases, such as nitrogen and argon, may also be used depending on the specific welding process and the metals being joined. However, the correct answer to the given question is option D, which states that oxygen and acetylene are the gases used in different types of welding.
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The gases used in different types of welding would includea)oxygen and...
Because when oxygen react with acetylene , it gives oxyacetylene gas which is used in welding process.
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The gases used in different types of welding would includea)oxygen and hydrogenb)oxygen, hydrogen, acetylene and nitrogenc)oxygen, acetylene and argond)oxygen and acetyleneCorrect answer is option 'D'. Can you explain this answer?
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