How to bend a profile at home. How to bend profile tube without pipe bender at home. The most simple ways to bend the profile pipe manually

With the need to flexing profile pipes in everyday life, it is not necessary to face. Before such a task, the owners of country sites or private houses are most often found - people who are accustomed to everything to do their own hands.

Regardless of the shape of the pipe profile, the essence of the flexible process is to give the product of partial or complete bending. You can achieve this can only with the applied of a certain external effect - exclusively pressure or totality of heating and pressure.

From the point of view of physics, in the process of bending to the profile pipe, two multidirectional forces affect simultaneously:

Stretching. Manifests itself from the outside of the bend.
Compression power. Directed on the inside of the bent site.

The opposite direction of these forces is just responsible for some difficulties that often arise in the process of flexing pipes:

Different parts of the pipe in the bend zone may not be able to change the form that will inevitably lead to a violation of their alignment.
The wall of the pipe from the outside of the bend with strong tension can lose strength or even burst.
On the inside of the bend, on the contrary, the compression is often formed folds.

To avoid these troubles, and not get a crumpled metal surface instead of a curved pipe, it is worth considering the type of material and numerous geometric parameters of the product: the thickness of the walls, the diameter of the section, the bend radius. Knowledge of these characteristics will allow you to choose the optimal fold method.

Note! Experts argue that profile pipes with a thickness of the walls less than 2 mm is better not to bend. The strength in the collapsion will be low enough, even with ideal technology compliance. For such pipes, it is better to prefer welded connections.

Principle of using pipe-bend

Bend the profile tube (especially for large diameter products) does not always seem to be possible with their own hands. For these purposes there are special devices - pipe bending. Standard pipe bender is equipped with a driving wheel, which, moving along one of the faces, gently bends the cutting of the pipe in the desired direction.

The profile pipeline is represented by products that have a cross section of a variety of shape. These include round, planes, square and oval pipes. Such an assortment of products provides the ability to create light arched diverting designs. They are used both in domestic structures and in production. The most demanded profiles include square products. The curved profile pipe of such a section makes it easy to fasten any external coating on a flat wall. Before at home, flexible profile pipes should be familiar with their technical parameters and methods of work.

Main difficulties when flexible profile rental

Profile pipes manufactured by industry have certain geometric parameters that are a determining factor for their plastic capabilities. From the thickness of the walls of metal rolling and the transverse area depends on the allowable minimum radius of bending. This parameter gives the value of rounding proftrub without its mechanical damage.

When mechanically exposed to products from metal rolled products, they are given a complete or partial bending. In this case, the force of compression (in the inner section) and the strength of the stretch (on the outer surface) acts onto the metal profile. It is they who cause major difficulties in the bending of metal products that are poured into the following problems:

the segments of the pipe material during the flexion of a metal-pylon product may lose their alignment, which will lead to the location of pipe rental sites in different planes;
the outer wall of the profile rental in the process of stretching can burst under the influence of an increased load;
on the inside of the bending profile may appear folds resembling corrugations.

For proftress with a height (H) to 20 mm, the length of the flexible portion should be more than 2.5 × h. Metal rolling with a profile with a height of more than 20 mm is painlessly bend on areas with a minimum length of 3.5 × h. The definition of minimum bending radii can be defined on the table.

Properly conducted technological process will allow you to get the perfectly smooth ride bend and will not give the product to get a crumpled or burst. By selecting the appropriate technology, it is necessary to take into account geometric parameters, as well as the characteristic of the material of the product. You can bend the profile tube by two methods: with preheating and cold condition.

Using preheating

This operation is carried out for products having a profile with a height of more than 40 mm. Inside the promotion is falling asleep sand, and wooden plugs are installed on the ends. Bulk material will allow metal to get uniform warm over the entire length. In one of the plugs, special holes are made to remove the gas generated when heated.

Sand for filling metal products used purified, with medium grain. If there is no one, the material from the courtyard sandbox is suitable, which must be prepared to prepare. To begin with, it is sieved through a sieve having a cell no more than 2.5 mm to remove small pebbles and gravel. To obtain a high-quality filler, it is additionally passed through cells with a size of up to 0.7 mm. This process will eliminate the sintering of dust inclusions in the sand when heated. The prepared material is calcined at a temperature of + 150 ° C. In the process of snowing sand into the pipe, it is recommended to tapping on the surface for a better distribution of the bulk material.

Before you bend the profile for the greenhouse with your own hands, it is necessary to ensure the safety of the work performed. Use special mittens from tight tarpaulin, which will protect their hands from contact with hot metal, and place nearby Fire extinguishing. The area of \u200b\u200bthe product that must be bend is previously annealed. Metal profile itself is attached in a special clamp or in the vice along with the prepared pattern. Available on the rental of the docking weld should be located on the side of the product. It protects it from excessive loads when compressed or stretching the material.

Pre-designated by chalk, the plot is heated by a dust burner. Fully heated metal profile slowly and smoothly bends over one approach. The applied efforts must be strictly in the same plane (horizontal or vertical). The cooled product is compared with the template, after which the sand filler is removed from it.

This method that is easy to use in the garage is used if it is necessary to obtain a single angular bending. With multiple heating, metal products will decrease its strength. This should be taken into account when preparing with your own hands at home the various parts of the arral design of the arbor, greenhouses, a canopy, or other structures.

Cold bending

Wounded metal products when applying a cold technology, it turns out at its height of up to 40 mm. You can bend this rental, both manual and mechanized method. With the size of metal profile up to 10 mm there is no need to fill it with sand. You can use the proftrub without using preheating using additional devices. For thin-walled products of small size, a flexible spring is applied inside. It allows you to bend the metal without its mechanical damage.

Before you bend the pipe profile, the edges of the springs are fixed with the wire at the ends of the pipe. This will fasten it inside the product and will not give to jump out when mechanically exposed. At the same time, the simplest method must be followed by the main condition: the spring must be the size of only a slightly smaller inner part of the pipe. Break the professional work in such a way without damage to the metal. Properly selected spring will allow it to be removed quickly and easily.

The presence of pipe bending will allow working with minimum profile size of 10 mm and maximum up to 40 mm. Before you bend the profile for the greenhouse with your own hands, the method of working with the metal is determined. A small simplest experiment will show whether it will be necessary to preheat the metal or not. For this, the pipe end is clamped with visits, and a profile with a large inner size is put on another. If it turns out to manually make it get started with steel rolled, you can perform work without using preheating. In addition to the manual or electrical profilegility, numerous mandrels and bending tables are used. They are suitable for obtaining an arc of aluminum or steel metal products with a maximum height of up to 10 mm.

Use of pipe-bend

With significant volumes, a special machine is required to obtain a curved metal profile - profilegility. With it, the flexibility of various profile pipes occurs easily and quickly. Using pipe bending, you can prepare a light frame for a visor, a greenhouse or other summer cottage. On the walls of the profile, the sheet metal will be configured or professional flooring.

The powerful versatile flexible type machine will be needed to work with high-crossing pipes. Structurally, it consists of three rollers, of which two have a fixed fixation. The changing position of the third roller makes bending the product under the desired radial size. The drive of this powerful device is the chain gear and the handle rotated by the operator.

Suggested in the store bending stores have manual drive, hydraulic, as well as electric, in which the profile flexible on the radius is made with high accuracy. To the most powerful manual profile focus machines that allow you to bend a large profile tube, refers to PG-6. This device can simultaneously bend a set of profiles with a width up to 120 mm.

The presence of a large number of options for pipe bearing devices provides an opportunity for their full use in the manufacture of numerous products. With their help, greenhouse frames, canopies and numerous arched steel structures are created. They allow you to get bent to a certain degree professional, curved in the arc, and a circle.

Production Profiegil Alone

Making a profilegic device with your own hands will significantly save personal means. Using drawings and special video, the process of creating the device will not take much time. The presence of drawings provides the ability to add some improvements to standard design. Presented images and sizes for self-making Profilegility can be adjusted for personal needs.

With the decision of the issue, how to bend a profile pipe at home without pipe bender, you have to face most owners of cottages, cottages and private houses. The desire to present itemily and originally to equip the household territory leads to the need to create arched structures. These are canopies, gazebos, visors and greenhouses for cellular polycarbonate. The purchase of factory products is associated with the costs that can be avoided by beating steel on its own. For this, there are enough tools and materials available in each workshop.

Metal rental, having a rectangular cross section, is convenient in operation, the blanks can be shown at different angles. Difficulties arise when there is a need to make a curvilinear form design items. This is due to the fact that the force of the product is valid for the outer wall of the product, and the inner side is exposed to compression.

Attempts to bend profile tube without pipe bender are conjugate with such problems:

The appearance of cracks on the material. If the wall thickness is small, it is possible to break the metal.
Floating side sides. A similar effect occurs when applying excessive pressure while skipping blanks through bending devices.
The occurrence of internal folds. The greater the height of the product profile and less radius editing, the greater the likelihood of such a defect.
Fleece section. It happens with a sharp applied effort on the workpiece.
Changing the sections configuration. In case of violation of technology, the planes, the longitudinal axis, the curvature of the part in the form of a spiral occurs.
Reduced metal strength. A similar flaw is a consequence of overheating and disruption due to this crystal structure of iron.

Avoid such complications is not difficult. It is enough to approach the case competently and thoughtfully.

Methods of flexible profile pipes

Dacha owners often have to think how to bend a profile tube for greenhouses quickly, without spending money on professional equipment. Even with financial resources, it is not always possible to immediately find arcs of the desired form and size.

You can use one of the proposed methods:

Cold flexible pipes. It is used when working with small section profiles 10x10 mm and 10x20 mm, with a wall thickness of no more than 1.5 mm. In such cases, the deformation is carried out by the muscular power of the wizard, and it can control the state of the metal itself. It is necessary to constantly measure the position of the horizontal and vertical section. The correct operation of the work is verified by the template.
Preheating. The source of flame is used, in which the billet is heated until red. After that, it is curved to the desired configuration. Bending the workpiece must be kept under voltage until complete cooling. For heating, a gas boiler is used, a furnace, a soldering lamp or a cottage mangal with a large content of charcoal.
With internal filling. Sand, machine oil or water is used as a filler. It is necessary to achieve the cavity to be filled as much as possible. The best effect is achieved when freezing water. The ice does not give the pipe to frighten under pressure. Tightness is achieved by brewing holes or scoring in them wooden plugs.
Cutting sector. This will require a bollard with a cutting disc. In the profile, triangular slits are made with the removal of chopped fragments. Then the pipe bends, and the edges of the cuts are welded with thin electrodes. This method is long, but reliable. Its use eliminates curvature and deformation.

In the presence of time and creative approach, non-standard approaches can be applied.

Alternative methods of bending

In order for the flexible profile pipes by the radius brought the desired results, it is necessary to take into account such factors as:

plasticity of facing material (tin, plastic, monolithic and cellular polycarbonate);
the shape of the section and the thickness of the walls - the square products better withstand deformation;
the elasticity of the metal - when carrying out the molding, the cold way of workpiece must be deformed by 10-15% more of the necessary radius.

There are the following alternative ways of bending rectangular pipes:

Forging. Bending is made by methodic application of shocks on the harvesting heavy hammer. The anvil is pre-manufactured, the top of which has a rounded form. The billet is rigidly attached to the clamps to the base of the anvil. After that, the profile shall be applied. Care should be taken, because Excessive efforts can lead to flattening products. It is more convenient to work with segments of no more than 1 m.
On lecture. The base for the placement of the part may be concrete, asphalt or tiled platform. The contour of the arc is applied on it, after which the reinforcement pins or thin steel pipes are driven into the ground. The item is fixed on the first pin. As it is bent, welding with pins. When the strength of elasticity is weakened, the arch is cut off with the pins with a grinder.
Rental under the oppression. To create a pressure, a vehicle with side removal of wheels and without wings is used. Rake lays in advance prepared groove from steel or concrete. After that, a methodic rolling wheel on the profile is made. The axial correspondence is controlled by manually or metal guides.

To reduce the likelihood of deformation of the walls of the product, it can be inserted into it a thin and long steel spring. In the case when heating is used, it should not be cooled with hot steel with water. From this it can be covered with cracks or burst. It is better to take advantage of the work. When using the muscular force on the free end of the link, it is recommended to plant a long and durable lever. So it will be possible to achieve the desired goal with less effort.

Required devices

To bend profile pipe with your own hands, you need to have such devices and equipment:

roulette;
level;
bulgarian;
welding machine;
protractor;
sledgehammer;
heavy hammer;
blowtorch;
kern;
marker or chalk.

To achieve the exact result, it is recommended to use a special tool. The conductor is a device for accurate calculation and cutting the parts of the parts. The mechanism is used to make marking at the ends of the arches, stops, shusin and cross. Thanks to the use of conductor, welding seams turns out to be smooth and neat.

The construction of the greenhouse must necessarily have not only aesthetic appearance, but also be functional. The greenhouse, which was built with his own hands, was either bought in the finished form, should generate income regardless of the time of year. If there is a thought on your own, then the question may arise how to bend a profile for the greenhouse with your own hands without using any special devices.

The carcass for the greenhouse can be bought or make it yourself. In order to bend the framework, you will need special. Fixtures - pipe bender or machine.

For example, an arched-type winter greenhouse, which has heated, turns the need to bend a profile for this design to the urgent need.

The framework of aluminum profiles is durable, lightweight, needs minimal care, besides, it can be easily fixed with your own hands.

Greenhouses in which profile designs apply

The carcass of the greenhouse made of aluminum profile with a multicate roof is a durable, reliable, lightweight design.

Elements that are manufactured from profiles are used in many species. The multicate roof of the 8-coal greenhouse has a solid construction. The skeleton material in this case will serve as an aluminum profile.

The profile may be wrought, mold, rod. It turns into the bay. Aluminum profile It is possible to handle mechanically: twist, drill, cut down. The designs from this type of profile can be connected by the resins on a synthetic basis or secure rivets, bolts.

The profile can be shaped full, intended for manufacture and greenhouses, racks, racks. The shaped profile has the ability to bend, drill, cut, to have the ability to apply it in the manufacture of the design.

The carcass made of aluminum profile is light, durable, needs minimal care, it can be strengthened with your own hands.

The greenhouse has a long period of operation (20-25 years). A significant drawback of the greenhouse is that it will be too expensive during construction with their own hands.

The leading position in the market takes. Its products from it are durable, comfortable, cheap.

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Greenhouses that use a curved profile

When building an arched greenhouse, the profile must be bend.

The profile will need to bend in the process of building multifunctional. Bending the profile will need to be for the arch, which comes from the base vertically up and bent in the middle. The framework is used, the strength of which can be provided with a connection of racks and beams. The dome-shaped greenhouse has a design of polygonal frames (metal or aluminum) and is difficult for assembly with their own hands. The entire framework must be chosen based on, as well as its size.

During the construction of arched greenhouses, it is necessary to prepare 12 flexible rods for halfdong. The length of them should be 1.5 m. For a high greenhouse (1.8 m height), it will take to harvest 10 rows, which have a diameter of 30 mm, and a length of 2.9 m.

Creating a frame begins with the definition of holes for flexible rods. They drill, after which the support racks are preparing. When installing the main framework, it may be necessary to carefully bend the metal bars on the arc.

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How can I get a square tube for a greenhouse greenhouse arc?

In order to bend the pipe, you can use homemade pipe bending.

With polycarbonate, there is a need to bend the arc square pipe, which has a cross section 20x20 mm. The diameter between their ends is 3 m.

Tools need to prepare in advance:

line;
bending machine;
pipes for bending (profile);
bulgarian;
pencil;
welding.

The pipe can be stuffed on a bending machine that is made with your own hands. The machine is scrolled by a handle, but the work requires greater effort if its wall is 1-2 mm. Without using the machine, you can bend with your hands using parallel tubes, and it will be necessary to pre-bind them with each other. The arc of the corresponding radius is depicted on the ground. It should be applied to it a curved product, adjust the original fully corresponded to the drawn drawing. The second arc is beaten similarly to the first.

The pipe is pre-divided into several equal gaps, hesitated with a grinder and in the future beaten according to the existing template. The faces of the feeding are processed by point welding.

The profile is lightweight and durable, well connects with absolutely any plane, withstands large transverse loads.

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Profile Bending With Machine

The service life of the greenhouse from the profile can reach 20-25 years. Therefore, it will take care of high-quality frame assembly.

The developer who is oppressed by the profile knows that this operation is quite complicated. It can be done with the help of a pipe bending machine of factory manufacture or made by hand. One of the possible methods of flexible profile is to use the source of fire - propane cutter, burners on acetylene or soldering lamp. One part warms up, after which the lever bends at an angle. Disadvantages of this type of work: great physical efforts are needed, as a result, it will be an inesttic appearance after the processing of the product.

The profile bending operation on the pipe bending machine is accurate and faster. The profile with the help of the handle stretches along the rollers of the pipe-bending, while the other roller presses on the pipe and deforms it. Pipe bender passes through itself a pipe and performs the arch of the required radius from it. The bending is performed at an angle of 30-180 ° (on hydraulically driven pipe bending). On the manual pipe bending, you can get pipes to implement in the winter period or to perform the installation of ventilation devices.

Tools that will be needed for the manufacture of pipe bending:

running screw;
3 roller;
billet;
bracket with presser axis;
template;
channel;
steel pipes having a diameter of 70-150 mm;
welding;
concrete solution;
metal table.

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The process of manufacture of homemade pipe bending

Homemade pipe bending can be made of two pipes and two rollers.

Homemade pipe bending is made of 2 pipes. The diameter of them can be from 70 to 150 mm. With the help of a concrete solution, they must be fixed in the stove. They can be fixed and by welding to the schuellor. Friendly pipes are located at a distance of 600 mm. A tube is installed between the racks, after which the force bended at an angle.

Rollers are put on the axes. They need to have them on the same level, while the distance between them should be approximately 50 cm. The third roller is located in the center. It must be raised to the level of 100 mm. The jack must raise the roller and adjust the bending radius of the pipe. Homemade pipe bending will bend rolling profile for the manufacture of a greenhouse or greenhouse design. The pipe with a thin wall will be needed to fall asleep with sand from one end, after which insert into the pipe bender. After processing sand should be removed. Over the entire length, the same product diameter should turn out.

The profile tube has a different cross section: oval, round or rectangular. Pipe bender differs from such a machine for ordinary pipes. The product and rollers have the same section.

When producing a roller is installed on a metal table. The axis attaches the bracket that has a pressure axis. On the axis, you should install a roller that copies the pipe profile. The billet should be handed over. When passing, pressing the product roller will occur. It stretches several times between the rollers, as a result of which the required bending is formed. The finished material is applied to the template.

The greenhouse frame with a square or rectangular cross section attracts reliability and service life. Extremely durable metal constructions misses the maximum of light, because its racks, supports, screeds are much thinner than the wooden rivals. Given the metal in the processability. Without knowledge of the nuances, it is difficult from a direct blank to make an arched arc or a frame for the door. Due to the specified complications with the metal base, the green houses are perfect in vain in vain. However, if it is pretty to figure out how to bend a profile tube for greenhouses, it is possible with minor costs to handle an inexpensive arched structure.

The essence and problems of flexing profile pipe rod

The flexible metal products, regardless of the section, consists in giving them a partial or complete smooth-curved configuration. One of the common plumbing procedures is carried out either only under pressure, or under pressure in combination with heating of the bent area. At this time, compression powers on the inside of the workpiece and the strength of the stretching along the outer wall are simultaneously operating on the trading part of the hollow metal blank. Complications are that:

material in the process of changing the form may lose the coaxiality of the segments, i.e. parts of the curved billet will not be located in a single plane;
a stretched outer wall on the bending area may not withstand the effects and tritely burst;
the compressible inner wall may instead of a uniform reduction to be folded with folds resembling corrugation.

Without knowledge of the subtleties of profile flexion there is a risk just to minimize the product by spoiling the workpiece. But the recklessness is not our way! Especially if it is accompanied by material losses. In the glory of rational economy we will take into account all the whims of the profile and the characteristics of the "iron" material. Do not forget about the size of the section, the thickness of the walls of the profile pipe, the required bending radius and the elasticity of the steel alloy. Focusing on the specified parameters, choose the correct technological path - it is the method of bending.

Why do you need to know profile characteristics?

The profile pipeline from the standard round variant is characterized by a cross section, which can be square, oval, rectangular or flat. According to the GOST RLUNY, number 54157-2010, the round product is also included in the list of profile products. However, in greenhouse construction, products with a square and rectangular cross section are most often used, for example, profile pipes of 40x20 mm, because they are easier to attach the coating to their smooth flat walls.

For a variety of national economic needs, products are produced in a wide range of sizes. It varies on the configuration and cross-sectional area and, of course, in the thickness of the walls. The combination of sizes determines plastic capabilities. In a professional language, they are called the minimally allowable radius of rounding. So, before you know how to make a blank for a frame, you need to find out how the smallest radius of a flat rounded deformation blank will be able to "survive" without damage.

To determine the minimum allowable bend radius of a square or rectangular profile, we need a height H, because:

products with a profile height up to 20 mm will be brought without a transition to the discharge of an unsuitable marriage if the bending will be made on a plot of 2.5 × H and more;
the pipeline with a profile height of over 20 mm without loss will withstand deformation on a stretch of 3.5 × H and more.

The designated limits are needed to those who have conceived to make racks, shelves and frames for the vents or doors. The wall thickness of the walls contributes to the area of \u200b\u200brestrictions. Wide pipes with thin walls thick up to 2mm do not recommend bending at all. It is better to use welding.

To homemade masters, which decided to make arcs for, it is necessary to take into account that the products used in everyday carbon or low-alloy steel alloys after an application for their efforts have a slightly "spring" property. They, as it were, try to return to the previous state. Consequently, after the beginning of the locksmith will complete the flexibility of all arcs, with his own hands, he will have to repeat the processing and re-fit the arches by the template. It is desirable to initially take into account the value of the plastic torque of WP resistance. It usually indicates the documents of the construction of building materials. The less moment is less, the less comes with fitting.

Methods are bending and their features

Flex a profile pipeline both in cold and hot. Heating with a gas burner will significantly increase the plasticity. However, the material of a small section is excellent and without excess temperature effects, because thin pipes are plastic enough and easier to be applied to them.

There is no accurate indication of the use of heating for flexion. The standards indicate only the size of round rolled steel, according to which the flames on the processed area are needed at Ø 100mm and more. With square and rectangular forms, everything happens somewhat differently. Based on the experience of folk craftsmen:

with a profile height of up to 10 mm, the workpiece is uniquely bent with a cold way;
with a profile height of 40 mm and a more pipe bent with heating.

How simpler and easier at home to bend a profile with a height in the range from 10 to 40mm, the Contractor will have to be addressed independently. If there is a profileger in the master arsenal, you can create an arched rounding without heating. No apparatus, it is better to try your strength in advance. To do this, clamp one end of the material in the vice. On the second end, wear a pipe size more than the height of the profile, and pull the "shoulder" enlarged in this way. If it happened, heated metal products does not make sense.

Option # 1 - Bending with heating

The notable material will deform the hot method, after completing it with sand. So the quality of processing will increase, and the uniformity of the bend is ensured. Broken for work "hot" tarpaulin mittens and proceed:

from trimming of a bar or lane, we will make two pyramidal plugs, the length of which should be 10 times the width of the base. The area of \u200b\u200bthe base of each self-made plug should be almost 2 times more square or a rectangular opening that it has to be stuck;
the programme, as "sit" the plugs, then on one of them we will choose longitudinal grooves from four sides. They are needed for gas output, which will be accumulated when the filler is heated;
pre-impose the workpiece on the segment of the future fold;
prepare filler. As it, take a pure building sand of medium grain. For the absence of bulk building materials, we use the sand from the children's sandbox. I see it first through a sieve with cells 2 or 2.5mm to remove the gravel and grooves. Large inclusions on the surface of the pipes can form an unnecessary relief. Then the sifted mass again "miss", but already through fine sieve with cells 0.7 mm so that the dust particles do not swear when heated. All the filter, as well as the filler upon completion of actions, we will return to the sandbox;
we pump the filler at a temperature of 150ºС;
we beat one end with a wooden plug, on which there are no channels for removal of gases. In the second end, install a funnel. Depending on the size, we establish a blank at an angle or perpendicular to the Earth. Through the funnel, we will pour a filler. Periodically tapping on the walls of the product from below-up-up wooden or rubber Cyans so that the sand seal. A signal about sufficient seal will be a deaf sound;
close the completed workpiece with the second plug;
we note in chalk on the workpiece of the heating section;
secure the workpiece or in the vice with the template, or in the clamp. Material with welded seam is installed so that the place of the welded connection turns out to be on the side. Along the seam is undesirable to stretch or compress;
rassed the noted plot of hot, and gently give the workpiece the necessary form. Bend to one reception by a progressive unwitting movement in a strictly horizontal or vertical plane;
after cooling, compare the result with the template. If everything is in order, knock or burn the plugs and pour sand.

The method described is good for the formation of single angular folds, because Do not heal the pipes several times persistently recommend. Metal from multiple temperature shock loses strength. However, when creating a rounded arch, multiple heating is inevitable. After all, it is unreal, but cooled to a light cherry hue, i.e. Up to 800ºС, the blank may simply break.

Option # 2 - Cold Method

Plastic deformation of the profile rental "on cold" produce, both with filler and without its use. The material with a profile height up to 10 mm does not require filling. A thicker pipe is better filled with sand or rosin. An alternative to the sand filler will serve as a spring of a dense navigation, the dimensions of which will allow it to tightly in the cavity in the processing site. The spring gasket will prevent the sharp change in the cross section of the profile in the bend places.

Bending "Cold" at home can be:

manually using the simplest devices like bending plates, vice and mandrel;
using a mobile profilegility - an improved analogue of manual pipe bending. ProfileGE differs from the device for flexing round pipes only by the form of the recess of the working roller;
by rolling on a homemade or factory profilogram machine, which can be made it with your own hands or purchased in the finished form.

Technical means of mechanization are bending wisely and more profitable to rent, if they are needed for one-time construction of the greenhouse. If in perspective the construction of green houses for relatives and neighbors or the construction of a beautiful metal fence, for example, there is a reason to acquire its own bending installation.

Bending devices and machines

There are representatives of varying degrees of technical complexity in the family of devices and aggregates for flexible. To begin with, consider the funds for those who are puzzled by the issue, as with the help of which the profile tube can be bent without the use of special equipment. Then we turn to homemade rolling settings.

Options of simplest devices

The use of elementary "helpers" for cold deformations regulate the size of the material:

thin pipe racket with a profile height up to 10 mm bent with a horizontal plate with holes. Metal pins, playing the role of stops, rigidly installed in the openings. Flexing the product, placing it between the stops installed in the holes according to the bending radius. Start from the middle of the workpiece and are gradually moving towards the edges. Minuses of the method in the applying of considerable muscle efforts and in rather low deformation accuracy;
pipes with profile height up to 25 mm bent with roller devices working on the principle of the Volnov machine. Metal blank is firmly fixed in vice, and physical force is applied to the treated part through the roller. Bending is made high quality and evenly than in the previous case. But from the artist, by analogy, non-reasonable efforts will be required.

For the formation of bend with a large radius of curvature, type of arched arched frame, fixed rounded patterns with homutics for fixing the workpiece are used. These adaptations to the discharge of plane-parallel plates are. The workpiece with the "stack" in the groove, the dimensions of which are equal to the size of the pipe. Manually flexible with mandrel tube takes the form of a given circuit.

Upgraded bending plate

If the home fitness is not deprived of physical force, the simplest tool for its own needs is useful for its own needs for a rather laborious deformation of the profile tube. It can be performed as a panel attached by clamps to the desktop or to the workbenk. In the case shown in the photo, the bending plate is welded to a metal pedestal, but it is bolted with four bolts to the concrete floor of the workshop. To remove the fixture upon completion of the work, the bolts will suggest. No fastening pins after dismantling remains and does not rise above the surface of the floor, it means that nothing will interfere with the movement and create traumatic threats.

The principle of manufacturing the working plane is extremely simple:

The bending plate serves as a panel carved from thick sheet iron.
The panel is welded to the profile pipe installed through the telescopic rules in the rack of the pedestal.
Two holes for bolts are drilled in the working plane, which are stops.
The radius of bending is adjustable by setting one of the appropriate nozzle bolts.
In order to preserve the coaxiality of segments adjacent to the split, a metal plate fixed by bolts is installed above the workpiece.

Press Multifunctional. His owner has the opportunity to use it as a miniature workbench to perform an impressive amount of plumbing operations.

Mandrel for flexing profile pipe

The method is suitable for products with a height of the wall to 25mm. The master will need a large vestic area and a significant free space around the working area. One edge of the workbench is perforated with frequently located holes for fastening the mandrel and to select the optimal position of the part locking the pipe. The template for the upcoming plastic deformation is cut out of thick plywood. True, the plywood mandrel is suitable only for one-time bending procedures. If the flexure works have to do a lot, the mandrels are better to cook from the steel corner.

Use manual profilegiba

Significant amounts of deformation work need mechanization. Mass production of curved parts takes too much health from the performer. To facilitate bending, it is advisable to make a machine according to the drawing. Apply them mainly for work with large blanks. The main working bodies of the manual aggregate are three rolls, two of which are fixed. Changing the position of the third rolling roll determines the bending angle.

If the methods described above are not acceptable, then the future owner of the greenhouse has two outputs - rent a manual installation or ordering the production of rounded parts. The process of deformation of the workpiece has demonstrated video: how it is easier to bend a profile tube - multiple rolling or physical influence, solve the performer.

When manually, it is important to comply with the rules of flexing profile pipes and do not make sharp movements. It is necessary to monitor the uniformity of deformation from the outer and inside of the rental. However, one should not be too upset due to small folds on the inner surface of the bend: they can be fixed with hammer blows. Before starting work, you need to make patterns from wire, chipboard or hypostertone for reconciliation and obtaining a result that corresponds to the project.