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The ratio between Oxygen and Acetylene gases for neutral flame in gas welding is
- a)2 : 1
- b)1 : 2
- c)1 : 1
- d)4 : 1
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
The ratio between Oxygen and Acetylene gases for neutral flame in gas ...
The neutral flame has a one-to-one ratio of acetylene and oxygen. It obtains additional oxygen from the air and provides complete combustion. It is generally preferred for welding. The neutral flame has a clear, well-defined, or luminous cone indicating that combustion is complete
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The ratio between Oxygen and Acetylene gases for neutral flame in gas ...
The correct answer is option 'C', which states that the ratio between Oxygen and Acetylene gases for a neutral flame in gas welding is 1:1.
Explanation:
In gas welding, a neutral flame is desired for most welding applications. A neutral flame is achieved by combining oxygen and acetylene gases in the correct ratio. Let us understand the significance of each gas and how they contribute to the welding process.
1. Oxygen:
Oxygen is a crucial component in gas welding as it supports the combustion of the fuel gas. It aids in the oxidation of the metals being welded and provides the necessary heat for the welding process. Oxygen also helps in improving the flame stability and increases the flame temperature. However, excess oxygen in the flame can cause oxidation and lead to poor weld quality.
2. Acetylene:
Acetylene is the most commonly used fuel gas in gas welding. It is a hydrocarbon gas that burns in the presence of oxygen to produce a high-temperature flame. Acetylene has excellent heating properties and provides the necessary heat energy to melt and fuse the metals being welded. It also acts as a reducing agent, preventing the formation of oxides during the welding process.
Now, let's understand why the ratio between oxygen and acetylene is 1:1 for a neutral flame:
- A neutral flame is achieved when the amount of oxygen and acetylene is balanced. This means that the flame has neither excess oxygen nor excess acetylene.
- In a neutral flame, the inner cone is bright blue and well-defined, while the outer cone is pale blue and less defined.
- The neutral flame provides an optimum balance of heat and reducing properties, resulting in clean and efficient welding.
- If the ratio of oxygen to acetylene is higher than 1:1, the flame becomes oxidizing, leading to excessive oxidation of the metals and poor weld quality.
- Conversely, if the ratio of oxygen to acetylene is lower than 1:1, the flame becomes carburizing, resulting in excessive carbon deposition and poor weld quality.
Therefore, to achieve a neutral flame in gas welding, the ratio between oxygen and acetylene gases should be 1:1.
Explanation:
In gas welding, a neutral flame is desired for most welding applications. A neutral flame is achieved by combining oxygen and acetylene gases in the correct ratio. Let us understand the significance of each gas and how they contribute to the welding process.
1. Oxygen:
Oxygen is a crucial component in gas welding as it supports the combustion of the fuel gas. It aids in the oxidation of the metals being welded and provides the necessary heat for the welding process. Oxygen also helps in improving the flame stability and increases the flame temperature. However, excess oxygen in the flame can cause oxidation and lead to poor weld quality.
2. Acetylene:
Acetylene is the most commonly used fuel gas in gas welding. It is a hydrocarbon gas that burns in the presence of oxygen to produce a high-temperature flame. Acetylene has excellent heating properties and provides the necessary heat energy to melt and fuse the metals being welded. It also acts as a reducing agent, preventing the formation of oxides during the welding process.
Now, let's understand why the ratio between oxygen and acetylene is 1:1 for a neutral flame:
- A neutral flame is achieved when the amount of oxygen and acetylene is balanced. This means that the flame has neither excess oxygen nor excess acetylene.
- In a neutral flame, the inner cone is bright blue and well-defined, while the outer cone is pale blue and less defined.
- The neutral flame provides an optimum balance of heat and reducing properties, resulting in clean and efficient welding.
- If the ratio of oxygen to acetylene is higher than 1:1, the flame becomes oxidizing, leading to excessive oxidation of the metals and poor weld quality.
- Conversely, if the ratio of oxygen to acetylene is lower than 1:1, the flame becomes carburizing, resulting in excessive carbon deposition and poor weld quality.
Therefore, to achieve a neutral flame in gas welding, the ratio between oxygen and acetylene gases should be 1:1.
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The ratio between Oxygen and Acetylene gases for neutral flame in gas welding isa)2 : 1b)1 : 2c)1 : 1d)4 : 1Correct answer is option 'C'. Can you explain this answer?
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