Question

How can the hole on the heater pipe be cut using an oxyacetylene torch?

1) Cut the hole with bevel sides slanted toward the middle of the pipe
2) Use a saw to cut the hole straight through the pipe
3) Use a drill to create the hole on the heater pipe
4) Use a chisel to carve out the hole on the heater pipe

Answer 1

A hole can be cut in a heater pipe with bevel sides using an oxyacetylene torch, a process that melts metal through an exothermic reaction. The cutting should be done with caution due to the high temperatures and explosive nature of acetylene.

Step-by-step explanation:

To cut a hole in a heater pipe using an oxyacetylene torch, it is important to understand that the torch works by the combustion of acetylene in oxygen, creating a very hot flame that easily melts metal. Answering the student's question, the correct method is: 1) Cut the hole with bevel sides slanted toward the middle of the pipe. This technique allows for a more precise cut that can accommodate fittings or welding. The bevel sides provide a surface that’s easier to weld, and it's a common practice in metalwork.

It is essential to adhere to all safety precautions when handling an oxyacetylene torch due to the explosive nature of acetylene and extremely high temperatures that can exceed 3000°C. The cutting process is an exothermic reaction involving the net heat of combustion at 1300 kJ/mol, which must be conducted with appropriate safety gear and knowledge.