During the work (usually completely unexpected), there may be a question - and how to bend a profile pipe at home? To date, there are several fairly effective techniques, and in the presence of a certain skill with the task, you can cope without contacting the workshop to professionals.

Method 1. Using pipe bending machines

When we talk about flexible profile pipes, then most often meaning the formation of a specific radius arc. The more this radius, the easier it is our task, since so the inner cavity will be subject to less deformations ().

Note! Bending round and profile pipes at right angles will not work: the break is practically guaranteed. For this purpose, either a welded joint is usually used, or special adapters that allow you to docile two separate segments.

If the need for the manufacture of arcs occurs quite regularly, then it is necessary to purchase a manual or stationary profilegail machine. It is a device with several rollers that affect the workpiece, giving it the desired shape.

The instruction on work on the pipe bender is quite simple:

• The detail of the desired size is placed in the machine and clamp in the attachments.
• Turn on the electric motor or start rotating the handle.
• Working rollers shift the axis of the pipe in the direction of bend, while simultaneously stretching one of the walls.
• A bending pattern is affected by the opposite wall, giving the workpiece the desired shape.
• To reduce the deformation of the inner cavity, hydraulic stabilization is often used: the edges of the parts are closed with plugs, and liquid is injected under low pressure.

To increase the efficiency of all operations, it is necessary to comply with such rules:

• The slower we produce processing, the lower the risk of a break or uncontrolled deformation of parts.
• When working should take into account restrictions on the thickness of the wall and the cross section of the pipe, topical for your model of the machine.
• Thick pipes are better flexing in the factory conditions after preheating: due to an increase in the plasticity of the metal, the quality of processing is increased.

The price of household devices of this type starts approximately 100 dollars. That is why for handling a small number of parts you can either rent a device for several days, or use the services of the master.

Folk remedies

Method 2. Trimming and welding

However, the pipe bending apparatus is not always at hand. That is why any master is worth studying in advance how to get a profile tube at home using more common tools.

If the integrity of the inner cavity is not critical for us, you can use the angular grinding machine and the welding machine:

• We are putting on the part to the markup, highlighting the site for which the bend line will be held.
• From the inside, with the help of a grinder with a cut off disk, we make several propilovs at least 3/4 of the cross section.
• Holding the ends of the part, form bending.

Tip! If necessary, excess metal cut out the same grinder.

• Fix the workpiece in the template and weld the edges of the cuts.
• After the metal cools, change the disc of the grinder to grinding and polishing the treated surface.

METHOD 3. INTERNAL SPARE

If the preservation of the wall integrity is fundamental, then to fulfill the tasks facing us, you need to make a special spring with your own hands:

• We take steel wire with a diameter of up to 4 mm. The thicker the wall of the pipe, the stronger should be wire.
• Using a full-scale steel blank, we hide the spring spider. The size of the side of the square is as follows that the obtained design is easily passed into the inner cavity of the pipe.
• We lay the spring into the bend area, after which he warmed the part of the solder lamp.
• Using a template or round blank of a suitable diameter, form a arc. At the same time, the spring inside protects the part from the break and retain its profile.

This technique is quite time consuming, since the production of the spring takes a lot of time and effort. On the other hand, use the elastic insert can be repeatedly, so that the method described is quite suitable for exercising large-scale work.

Method 4. Filling with sand or water

If, at hand there is no suitable steel wire, and the need for the manufacture of arcs from the tubular billet is quite sharp, it is worth using one of the methods involving internal filling.

Liquid can be used as a placeholder:

• Before you bend a profile pipe from copper with thin walls (sometimes they are used in heating systems), its cavity is poured with water, hermetically closing both ends.
• After filling, we endure the product to the cold or put in the freezer. We expect until the water completely freezes.
• Using a blank or template, we make the pipe, after which we take plugs and drain the water.

In the warm season, as well as in the processing of thick-walled blanks, the water replace sand:

• Material is sifted by removing all pollution, after which we carefully calculate on fire.
• One edge of the blank is plugged with a wooden plug.
• I fall asleep into the cavity of dry sand, carefully sealing it by tapping on the ground or workbenk.
• We set the plug to another end of the part and perform bending. If you do not rush, then the sand due to the maintenance of internal pressure will not allow the internal influence.

Output

If you at least periodically work with the metal, then you know about how to bend the profile pipe without a pipe bender, you must. Of course, all the methods described will not fully replace high-quality professional equipment, but in a critical situation they are able to help, allowing to solve the task as quickly as possible ().

If you want to familiarize yourself with the processing technology in more detail, we recommend watching the video in this article.