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Which type of filler rod is used in gas welding of stainless steel?
- a)Pure aluminium
- b)Copper silver alloy
- c)Columbium stainless steel
- d)Copper coated mild steel
Correct answer is option 'C'. Can you explain this answer?
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Which type of filler rod is used in gas welding of stainless steel?a)P...
Columbium stainless steel is used in gas welding of stainless steel.
Stainless steel
Stainless steel is an alloy of iron, chromium, and nickel. There are many different classifications of stainless steel according to the percentage of its alloying elements.
Pieces of wires or rods of standard diameter and length used as filler metal in the joint during gas welding process are called filler rods or welding rods.
Types of stainless-steel filler rods:
Specially treated stainless-steel filler rods, which contain stabilizing elements such as molybdenum, columbium, zirconium, titanium etc., are available.
The chromium percentage is also sometimes 1 to 1.5 percent more than in the base metal, to compensate the losses that may occur during the welding operation from the base metal.
Most Upvoted Answer
Which type of filler rod is used in gas welding of stainless steel?a)P...
Gas Welding of Stainless Steel
In gas welding of stainless steel, the correct filler rod to use is columbium stainless steel (option C).
Explanation
Gas welding, also known as oxyacetylene welding, is a process that uses a combination of fuel gas and oxygen to create a high-temperature flame for joining metals. When welding stainless steel, it is necessary to use a filler metal that matches or closely matches the composition of the base metal in order to achieve a strong and durable weld.
Columbium stainless steel is a type of filler rod that is specifically designed for welding stainless steel. It contains a high percentage of columbium, also known as niobium, which is a strong, corrosion-resistant metal that helps improve the strength and durability of the weld.
Advantages of using columbium stainless steel filler rod:
- Corrosion resistance: Stainless steel is known for its excellent corrosion resistance, and using a columbium stainless steel filler rod helps maintain this property in the welded joint.
- Matching composition: Columbium stainless steel filler rod has a composition that closely matches that of stainless steel, ensuring a good metallurgical bond between the filler metal and base metal.
- High strength: The presence of columbium in the filler rod enhances the strength of the weld, making it suitable for applications that require high mechanical performance.
- Good weldability: Columbium stainless steel filler rod is designed to have good weldability, allowing for easy and efficient welding of stainless steel.
Using the correct filler rod is crucial in gas welding of stainless steel to ensure the integrity and performance of the weld. Columbium stainless steel filler rod offers the necessary properties to achieve a strong and corrosion-resistant weld, making it the ideal choice for this application.
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Which type of filler rod is used in gas welding of stainless steel?a)Pure aluminiumb)Copper silver alloyc)Columbium stainless steeld)Copper coated mild steelCorrect answer is option 'C'. Can you explain this answer?
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