The neutral flame is the flame in which the amount of oxygen is precisely enough for burning, and neither oxidation nor reduction occurs. A flame with a good balance of oxygen is clear blue. The reducing and neutral flames are useful in soldering and annealing.
Neutral Welding Flame. 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.
128) Most of the oxy-acetylene welding is done with
Answer is:
Neutral Flame
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
at the inner cone
Explanation:
The maximum flame temperature occurs At the inner cone.
Answer is:
less than
Explanation:
The maximum temperature of Oxy-hydrogen flame is about 2,800 °C.
The temperature of the oxyacetylene flame 3480 °C.
Answer is:
equal volumes of oxygen and acetylene
Explanation:
A neutral flame is obtained by supplying an Equal volumes of oxygen and acetylene.
Answer is:
carburizing flame
Explanation:
When more volume of acetylene and less volume of oxygen is supplied, then a Carburising flame is obtained.
carburizing flame is one with little oxygen, which produces a sooty, lower-temperature flame. It is often used to anneal metal, making it more malleable and flexible during the welding process.