How to thread a pipe: a detailed overview of the main methods
Do you like to do your own home improvement work, without having to involve various craftsmen?? Self-installation or repair not only allows you to save money on calling specialists, but also greatly increases self-esteem, because the right?
In the process of installing communications often becomes necessary to prepare the threads on the pipes. You have to find ways not to spoil the product.
We will tell you how to thread with different tools, which method is preferable to use in this or that situation. The article discusses ways that are available to unskilled performer. The features of threading different types of threads and equipment used in this process are highlighted.
The presented material is supplied with illustrative photo materials depicting the tools to perform the work. And the video with recommendations will help to understand in detail all the intricacies of this process.
We use an electric thread cutter
Like many modern household electrical devices, the electric thread cutter is very simple and easy to use. And this is especially true when it comes to threading small workpieces. No need to puzzle over how to securely clamp the pipe.
Usually such a device includes different diameters and electric device itself, with a powerful reverse gear. A piece of pipe is clamped in a special guide vise-holder. And the rest is easy. you press the trigger with the right thumb and thread the pipe.
An electric thread cutter will make it easier to thread small parts
Threading pipes in such a way involves a risk that the electric thread cutter gets too hot and even overheats too quickly. Of course, if we are talking about the processing of a single part, there can be no problem. But in this case you might question the expediency of buying this expensive device. If you intend to make several long threads, for example, on an inch pipe, then an electric thread cutter should be operated with great care. In addition, its dimensions do not always allow you to thread a pipe close to the wall.
Threading with a solid die
One-piece dies are often used for tapping pipe threads. They are a hardened nut with internal cutting edges. Such tool is suitable for threading up to 52 millimeters in diameter.
They are inexpensive, very stiff and precise, but do not last long, because they wear out quickly. Working with reciprocating dies requires a certain amount of experience, so to avoid damaging the tool and the pipe, it is advisable to practice on a piece of pipe.
How to Thread Pipe; A Beginner’s Tutorial
The procedure for working with a solid die is as follows. The first thing to do is to select the right tool diameter with a caliper. Insert the ram into the bracket and fix in place with screws. Be sure that the strip is secured in place, because otherwise the threads can become jagged.
The tube is clamped in a vice or clamped in any other way in vertical position. Grease or oil is applied to the surface of the pipe, as well as to the cutters of the die. Continuous relubrication is necessary.
Directly, the threading is carried out in a plane strictly perpendicular to the direction of the axis of the pipe, in a clockwise direction. If it is tilted, the threads are torn off or the diameter is altered. After several threads cutting it is necessary to screw through the strip in the opposite direction from time to time for chip removal. After that, threading should be continued.
The work should be carried out smoothly and without jerking. In order to cut a high-quality thread, it is necessary to drive it first with a roughing cutter, and then to use a finishing cutter. You won’t have to cut long. a thread length of 10 millimeters is quite sufficient, which is standard for most domestic pipe networks. After using the die, the grease must be removed from the surface of the pipe and tools. Using a rag, the treated areas are cleaned of swarf.
Problems may arise when working with stainless steel pipes, because, in this case, the metal is quite hard. To thread such pipes it is necessary to choose a strip made of an appropriate steel, for example, marked R18F2. If milder steel dies are used, the tool will be hopelessly damaged.
Choosing a threading tool
To thread metal parts by hand, taps are used for female threads and dies and clups for male threads. We are interested in the latter: that is what we need for working with pipes. Although both of these tools serve the same function of forming a helical surface on the outside of a cylindrical workpiece, they do have some design differences.
The die is a large nut with cutting edges inside to remove material from the surface of the workpiece and holes to drain chips. It is screwed onto a workpiece and can thus be threaded. For those who encounter such work for the first time, the use of this tool can cause difficulties. the slightest twist will lead to a defect, and the product will be spoiled. That’s why a beginner would be better off with a manual tongs.
This fixture is used specifically for making pipe threads. Essentially it is the same die, but in a cylindrical metal holder. There are high-carbon steel cutters inside the cylinder, additionally there are clamping rings and bolts for better fixation on the workpiece. this eliminates misalignment during work and helps to achieve high-precision carving. You need a handle to turn the tongs. It can be delivered together with it or instead of it a usual gas spanner is used. The hand clapper should be chosen for the diameter of the pipe, such as 3/8, 1/4, 1/2, or 1 inch. There are tools with interchangeable cutters that can be used with different pipe sizes, such as 1/2 and 1 inch.
Tapping with a die
Pipe threading dies are used quite often because they are widespread and easy to use. Apply oil. Apply oil in this way.
- Clamp the pipe in a vise in a vertical position.
- Clean surface and apply oil.
- Turn turn hand wheel clockwise.
- To improve thread quality and accuracy, make one backward turn after two turns. This sequence allows the residual metal chips to be removed from the cutting part.
It is essential to oil the cutting part of the die and the tube while threading. it makes the machining smoother. For more information on threading with a die, see this article.
- A punch is a tool for threading in hard-to-reach places. In appearance, it resembles a wrench, only instead of bolt attachments, it has a hole for attaching replacement cutters. A ratchet is similar in principle to a ratchet, but uses a cutting edge instead of a solid washer, and uses a mechanism similar to a ratchet for turning. There are devices that use adjustable wrenches or open-end wrenches instead of a solid body. Such a tool will cost less than a one-piece clipper with a ratchet, but you can be injured when using them, because the wrench sometimes slips off.
What tool is needed
Threading the pipes will require the following devices:
- Measuring tape, pencil, caliper. To assemble the piping, you need to develop a diagram in advance. First take the pipe with a specified length: the marking is made with a tape measure and a pencil. A caliper is used to measure the diameter and select the appropriate fixtures. It is important to be very precise and accurate when marking, as any deviation from the correct size will cause the entire structure to fail. As a consequence, in such cases it is often necessary to redo the entire pipeline.
- angle grinder. This tool is used for cutting of pipes according to marked marks. These functions can also be performed by a simple hacksaw on metal.
- Vise. During the job, the pipe must be securely fixed in a strictly horizontal position.
- Machine oil or other grease. To facilitate manual threading, it is practiced to lubricate the tool and the work area with a special substance.
- The tools for tapping. Pipe threads can be tapped with a club, die or tap. What tool to use depends on the type of thread to be threaded and the preferences of the performer. Different threading sets are used for different jobs, depending on the situation. The external thread can be tapped with a die and held in place by a crescent or a clip-on tool. Taps will be needed to apply the internal threads.
There is nothing difficult about threading a pipe yourself.
It is important to have special tools at your disposal.
Perform all actions, carefully, and take your time. And another thing not to forget:
[note]Any home work can be done by your own hands, the main thing is to find the right approach to it. So you can save money from the family budget.[/note]
Master class from a home craftsman who first took up threading on a pipe. watch the video.