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The process of joining metallic pieces by introducing non-ferrous alloys in the liquid state between the metallic piece and allowing to solidify is known as
- a)brazing
- b)soldering
- c)wiping
- d)lancing
Correct answer is option 'A'. Can you explain this answer?
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The process of joining metallic pieces by introducing non-ferrous allo...
The correct answer is option 'A': brazing.
Brazing is a joining process that involves the use of non-ferrous alloys in the liquid state to join metallic pieces. It is widely used in various industries, including automotive, aerospace, and plumbing, due to its ability to create strong and reliable joints between different metal components. In brazing, the filler metal, also known as brazing alloy, is heated to its melting point and then applied to the joint between the metallic pieces. The filler metal then flows into the joint by capillary action and solidifies, forming a strong bond between the metallic pieces.
Brazing Process:
1. Surface Preparation:
Before brazing, the metal surfaces to be joined must be thoroughly cleaned and prepared to ensure proper adhesion of the filler metal. This involves removing any oxides, dirt, or contaminants from the surfaces through cleaning methods such as degreasing, wire brushing, or chemical cleaning.
2. Selection of Filler Metal:
The selection of the filler metal is crucial in brazing as it determines the strength, temperature resistance, and other properties of the joint. The filler metal should have a lower melting point than the base metals being joined and should also possess good wetting and flow characteristics.
3. Heating:
The base metals are heated to a temperature slightly below the melting point of the filler metal. This is done to ensure that the filler metal remains in its liquid state while the base metals reach the required temperature for proper bonding. Heating can be done using various methods, such as torch heating, furnace heating, or induction heating.
4. Application of Filler Metal:
Once the metallic pieces reach the desired temperature, the filler metal is applied to the joint. It can be in the form of a wire, rod, or pre-placed preform. The filler metal is carefully positioned in the joint, allowing it to flow through capillary action between the metal surfaces.
5. Cooling and Solidification:
As the filler metal flows into the joint, it cools down and solidifies, forming a strong bond between the metallic pieces. The cooling process can be natural or accelerated using methods such as air cooling, water quenching, or controlled cooling in a furnace.
Advantages of Brazing:
- Brazing allows the joining of dissimilar metals, including ferrous and non-ferrous metals.
- It provides high joint strength and integrity.
- Brazed joints are resistant to temperature variations, vibration, and mechanical stresses.
- It allows for the joining of complex shapes and small components.
- The brazing process can be automated, making it suitable for mass production.
In conclusion, brazing is a joining process that involves the use of non-ferrous alloys in the liquid state to create strong and reliable bonds between metallic pieces. It offers several advantages and is widely used in various industries for its versatility and effectiveness in joining different metals.
Brazing is a joining process that involves the use of non-ferrous alloys in the liquid state to join metallic pieces. It is widely used in various industries, including automotive, aerospace, and plumbing, due to its ability to create strong and reliable joints between different metal components. In brazing, the filler metal, also known as brazing alloy, is heated to its melting point and then applied to the joint between the metallic pieces. The filler metal then flows into the joint by capillary action and solidifies, forming a strong bond between the metallic pieces.
Brazing Process:
1. Surface Preparation:
Before brazing, the metal surfaces to be joined must be thoroughly cleaned and prepared to ensure proper adhesion of the filler metal. This involves removing any oxides, dirt, or contaminants from the surfaces through cleaning methods such as degreasing, wire brushing, or chemical cleaning.
2. Selection of Filler Metal:
The selection of the filler metal is crucial in brazing as it determines the strength, temperature resistance, and other properties of the joint. The filler metal should have a lower melting point than the base metals being joined and should also possess good wetting and flow characteristics.
3. Heating:
The base metals are heated to a temperature slightly below the melting point of the filler metal. This is done to ensure that the filler metal remains in its liquid state while the base metals reach the required temperature for proper bonding. Heating can be done using various methods, such as torch heating, furnace heating, or induction heating.
4. Application of Filler Metal:
Once the metallic pieces reach the desired temperature, the filler metal is applied to the joint. It can be in the form of a wire, rod, or pre-placed preform. The filler metal is carefully positioned in the joint, allowing it to flow through capillary action between the metal surfaces.
5. Cooling and Solidification:
As the filler metal flows into the joint, it cools down and solidifies, forming a strong bond between the metallic pieces. The cooling process can be natural or accelerated using methods such as air cooling, water quenching, or controlled cooling in a furnace.
Advantages of Brazing:
- Brazing allows the joining of dissimilar metals, including ferrous and non-ferrous metals.
- It provides high joint strength and integrity.
- Brazed joints are resistant to temperature variations, vibration, and mechanical stresses.
- It allows for the joining of complex shapes and small components.
- The brazing process can be automated, making it suitable for mass production.
In conclusion, brazing is a joining process that involves the use of non-ferrous alloys in the liquid state to create strong and reliable bonds between metallic pieces. It offers several advantages and is widely used in various industries for its versatility and effectiveness in joining different metals.
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The process of joining metallic pieces by introducing non-ferrous alloys in the liquid state between the metallic piece and allowing to solidify is known asa)brazingb)solderingc)wipingd)lancingCorrect answer is option 'A'. Can you explain this answer?
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