The maximum temperature of Oxy-hydrogen flame is about 2,800 °C.
The temperature of the oxyacetylene flame 3480 °C.
130) The temperature of oxy-hydrogen flame is ______ Oxy-acetylene flame.
Answer is:
less than
Explanation:
Related Workshop Technology MCQ with Answers
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.
Answer is:
all of these
Explanation:
Neutral flame is used to weld
* steel
* cat iron
* copper
Answer is:
oxidizing
Explanation:
A slightly oxidizing flame is used in torch brazing of steel and cast iron. A stronger oxidizing flame is used in the welding of brass or bronze.