Q. 2 ( B) Write steps while threading with dies on pipe. State precaution in it.
Answers
Explanation:
Part 1 of 2:
Getting the Threads Started
1
Secure the pipe firmly in a vise. Loosen the jaws of the vise by turning the handle counterclockwise just far enough to fit the pipe between them. Place the pipe in the vise so the end you want to thread is sticking out, then turn the handle back clockwise to tighten it and secure it in place.[1]
Note that you can use either a regular table vise or a pipe vise that is specially designed for holding piping in place.
This method uses a ratcheting pipe threader to cut threads into the end of a pipe. A ratcheting pipe threader consists of a long ratcheting handle that holds a circular die head at one end, which is a ring with several sets of teeth inside of it that cut the threads. When you ratchet the handle, the die head spins onto the end of the pipe, cutting the threads as it goes on.
If you don’t have all the equipment or don’t want to purchase or rent it, you can also have pipes threaded for you at a home improvement center.
2
Put on work gloves and safety glasses. These will protect your hands and eyes from any metal slivers and accidental cuts. It will also keep your hands clean as you lubricate the pipe and pipe threader throughout the process.[2]
You can just wear 1 work glove if you prefer to leave 1 hand bare to grip the handle of pipe threader better.
Cut and ream the pipe if you need to make it a different length. Use a pipe cutter or a hacksaw to cut the pipe to length. Insert a reamer in the cut end of the pipe and rotate it around to remove sharp burrs and smooth the end out.[3]
A reamer is a cone-shaped manual rotary cutting tool that removes the rough edges of a cut pipe as you rotate it around inside of the cut end.
4
Choose a die head based on the pipe’s diameter. Read the numbers on the different die heads for the ratcheting pipe threader to see what sizes they are. Select a die head that is of the appropriate size for the pipe you want to add threads to.[4]
A die head is the part of the pipe threader that actually cuts the threads. Ratcheting pipe threaders typically come with die heads in a few different common diameters. The face of the die head has numbers on it that indicate the size of pipe it is for. For example, if it says 1/2 on it, the die head is for threading 1/2-inch piping.
You can purchase or rent a ratcheting pipe threader and die heads at a home improvement center or hardware store. An inexpensive ratcheting pipe threader with 5-6 different die heads costs between $40-$60 USD.
5
Attach the die head to a ratcheting pipe threader handle. Remove any die head that is already in the handle by pulling it out. Slide your selected die head into ring at the end of the handle until it snaps all the way into place.[5]
The ratcheting handle is the handle you use to move it around the end of the pipe to cut the threads in it.