Pipe benders (including hydraulic ones) for round pipes. How to make a pipe bender for a pipe with your own hands: drawings, diagrams, videos Factory pipe bender drawing of a roller for a round pipe

To work with pipes or a corner, a special machine is required, called a pipe bender. This design allows you to bend metal elements at a given angle. If necessary, you can make a professional pipe bender with your own hands, which is used in a wide variety of industries. Unlike the industrial version, a homemade pipe bender is much cheaper. When carrying out work, you can use improvised materials, which to a greater extent will reduce the cost of the structure. Let's take a closer look at how to make a pipe bender with your own hands at home.

Pipe bender device

There is simply a huge number of different types of the device in question. Before carrying out work on its creation with your own hands, you should develop a drawing of a pipe bender or download it on the Internet.

You can make a pipe bender for a round pipe with your own hands, taking into account the following features of its device:

1. Running in. Such a pipe bending machine is characterized by the fact that one end of the workpiece is fixed, and a fixed template is used for bending. Running in is carried out using pressure rollers. This manual pipe bender scheme has been used for many years.
2. Winding. A special pipe bender for aluminum pipes is characterized by the fact that the workpiece is pressed against a movable template, which is used as a roller. The broach is carried out between the roller, which is in motion, and a special stop. As a rule, the drive is electric, since the required rate of applied force is quite high.
3. Crossbow design. This scheme is represented by a combination of two fixed rollers, as well as a movable template. The force is transmitted to the workpiece through a movable template, which is located between two rollers. By controlling the movement of the movable element, the most suitable bending angle is selected. It should be borne in mind that the pipe bender punch, which acts as a template, can have a different shape.
4. Rolling or rolling. In this case, the scheme is represented by a device with three rollers, two of which are supporting and one is movable. The bending radius is adjusted by changing the position of the central roller. It should be borne in mind that such a device is considered universal, since the bending radius can be adjusted over a fairly large range. The dimensions of this type of pipe bender are relatively small, a home-made design can be compact.

When choosing the most suitable design for home-made manufacturing, it should be borne in mind that the version that works according to the knurling principle is often produced industrially due to the complexity of the high complexity of the main mechanisms. The crossbow bending method is rarely used today, as it has one significant drawback: the pressure is concentrated on the top of the template. When using a crossbow machine, there is a possibility of a significant reduction in the thickness of the pipe wall, as well as its rupture. It is not recommended to use such a device for bending thin-walled workpieces.

The most widespread design, which works on the principle of rolling. It is practically devoid of all the above disadvantages, has a relatively small size, can be portable, it is possible to adjust the bending angle.

A homemade machine can have a very different design. When choosing a type, attention is paid to what radius should be obtained. The most important parameters of the workpiece, which can influence the choice of a suitable design, are considered to be the wall thickness of the pipe and its diametrical size.

Types of pipe benders

The design under consideration can be classified according to a fairly large number of features. On sale there are universal versions, as well as for narrowly targeted applications. The device differs in the following ways:

1. Drive type. An important element of the design can be called a drive, which can be hydraulic, electric, manual or electro-hydraulic. Recently, the electric drive has become more widespread, as it is compact and very efficient. Hydraulic is more efficient, but it is difficult to operate, takes up a lot of free space and requires periodic maintenance. The manual pipe bender is distinguished by the presence of a mechanism that significantly increases the applied force. If we consider home-made options for execution, then they do exactly a manual pipe bender with their own hands. In addition, you can create a do-it-yourself pipe bender with an electric drive. But the hydraulic version of the execution is almost impossible to make on your own.
2. Classification is also carried out according to the degree of mobility. Allocate stationary and portable versions of the design. In most cases, a universal manual pipe bender is carried out as a portable structure. A homemade pipe bender for a round pipe can be attached to the base in various ways. It should be borne in mind that during the execution of the work, part of the resulting voltage is diverted precisely to the base. Therefore, when creating a home-made version, it is necessary to ensure a secure fixation of the device.
3. According to the method of impact on the workpiece - the main feature of the classification. For example, a crossbow-type pipe bender has its own special design, which is suitable for bending a metal or metal-plastic pipe. In addition, there is a design that works on the principle of running, winding or rolling.

A home-made pipe bender for metal-plastic pipes can be of various types, but most often they create a mechanical type, when, due to a special design, the transmitted force increases several times.

Pipe bender manufacturing instructions

Recently, the question of how to make a pipe bender with your own hands has become quite widespread. Such equipment is required when setting up production activities of various types. The simplest do-it-yourself pipe bender has a template type of design. This is due to the fact that it is quite difficult to make rollers for a pipe bender with your own hands.

Considering the template pipe benders for a round pipe, we note the following points:

1. In the manufacture of structures, an array of wood is often used. This greatly simplifies work and reduces costs. However, it should be borne in mind that the low strength and rigidity of wood determines the use of such a machine only for bending aluminum, which has high ductility.
2. The wooden block used must have dimensions that are larger than the diameter of the workpiece being processed.
3. The template must have a radius that will match the bending radius. In order to simplify the process, a small groove is created in the central part of the surface that is in contact with the workpiece.
4. For ease of use, two handles are created that have a metal mount.
5. Having created a pipe bender at home, it should be attached to a solid base, and an emphasis should be installed on the reverse side.

An important point is that the design under consideration is applicable to a greater extent for bending along a large diameter. In addition, a shoe for a pipe bender of this type is not required, the load is distributed evenly, which allows processing thin-walled workpieces.

You can make a pipe bender with your own hands according to other drawings. Before choosing the most suitable design, one should consider how often the work will be carried out, for what kind of workpieces the machine is made, how mass production will be. The design of the template type is characterized by a rather large size, however, for its manufacture it is enough to carry out carpentry work, the materials used are of low cost.

The most complex design is considered to be a homemade roller-type pipe bender. In this case, a pressure roller is used to transmit force. In the manufacture of a structure, metal and wood can be used, it all depends on how mobile it should be and what effort it is designed for.

The following points can be attributed to the features of such a design:

1. For pipes made from soft materials, wood is more suitable as the main material. It can be used in the manufacture of the roller. For steel pipes, metal will have to be used, since the magnitude of the transmitted force will be significant. If desired, the rollers can be purchased or made by hand at home.
2. Design features determine the presence of a movable and fixed roller. At the same time, a U-shaped holder is located in the central part.
3. The bending radius largely depends on the size of the rollers used. That is why the movable roller must be quickly dismantled, if necessary, to install a version with a different diameter.
4. The holder to be installed must also be able to rotate.
5. A handle is attached to the installed holder, during the rotation of which force will be transmitted. It should be borne in mind that the handle acts as a lever. That is why the amount of force that can be transmitted depends on its length.

Such a machine is suitable for production in large batches, since it is quite difficult to make rollers for pipe benders with your own hands. The device is suitable for working with round pipes.

A common question can be called how problematic it is to manufacture such a mechanism. When using a bending machine of this type, the following points should be considered:

1. To begin with, you should study in detail the drawing or photographs of the equipment in question. Only by understanding the principle of its operation, you can create effective equipment with a wide range of applications.
2. The main elements of this design are relatively small. An example is two pulleys, which can be made of wood or steel, a frame with a lever and a pressure roller. It is quite important to create a solid foundation that will take part of the effort.

The principle of operation is quite simple:

1. The workpiece is placed in the chute of the fixed roller.
2. The pipe is fixed in the desired position with a clamp.
3. With the help of a lever, the workpiece is wrapped around a template, which is also used as a roller of a certain diameter.

In order to significantly increase the efficiency of the design, an electric drive can be used. However, it should be borne in mind that with an electric drive it is quite difficult to control the rounding diameter indicator. In addition, the installed electric motor must transmit rotation through a reduction drive, since the roller rotation speed is low. For this, a gearbox or V-belt transmission is installed.

Crossbow pipe benders

A rather unusual design has a crossbow-type machine. It got its name due to similar features with medieval weapons. The crossbow pipe bender has the following features:

1. The basis of the design is represented by a frame, which can be made using corners and a channel. The connection of all elements is carried out using welding, detachable methods are not recommended, since the resulting structure must have high rigidity.
2. After creating the frame, two rollers are fastened.
3. A home-made version can be characterized by the fact that the force is transmitted directly through a mechanical type jack. For a pipe of small diameter, the pressure generated should be sufficient. The transmission of force is carried out through a shoe made of durable metal with a low ductility index.

The crossbow type pipe bender is more suitable for round workpieces. This is due to the fact that a product with a different cross section can be strongly deformed under pressure.

Hydraulic Pipe Bender

When making a pipe bending machine with your own hands, you should decide what kind of drive will be. In most cases, home-made versions have a manual drive, as it is easy to manufacture and is cheap. However, such a design cannot work with workpieces that are made using hard metals. The hydraulic pipe bender allows you to work with workpieces of large diameter and with a significant wall thickness, however, the design is quite complex in execution and has many features.

When making a machine for a round pipe with a hydraulic drive, the following points should be considered:

1. The transmission of force is carried out through the working fluid, which is oil or water. All lines must have a high degree of tightness, and also be designed for a certain pressure.
2. A compressor can be used to create pressure.
3. The pressure is transmitted to the working body through a hydraulic cylinder.

A pipe bender for metal-plastic pipes with a hydraulic drive can have a very different design. An important element in this case is the drive, which allows you to automate the bending process and increase the scope of the device.

Pipe bender from a jack

Most often, when making a homemade pipe bender, a jack is used as the main element. It comes in several types. The jack itself was originally made in order to increase and concentrate the applied force, due to which the structure can lift heavy mechanisms, for example, cars.

A homemade pipe bender from a jack, as a rule, has a fairly simple design:

1. The workpiece is clamped between two fixed rollers.
2. The force is transmitted to the gap between the rollers.
3. The distance between the fixed rollers largely determines the bending radius and the amount of force required to obtain a certain angle.

As previously noted, when using a jack, you can make a crossbow-type pipe bender.

In conclusion, we note that almost any device is a relatively simple machine that, due to the distribution of the applied force, bends pipes and other workpieces of this type. They are often used for bending products made using non-ferrous alloys and steel. The industrial version of the design bypasses the home-made one, as a rule, in terms of the degree of automation of the process. However, the cost of industrial pipe benders can exceed the costs associated with the production of a home-made version by several tens of times. That is why a homemade pipe bender is more suitable for domestic use or small-scale production.

Each owner of a large garden plot or a small cottage, at least once in his life (at least) may need a pipe bender - a device for bending a profile pipe.

For example, it can be a blank for a greenhouse frame or a canopy, a gazebo, or any other metal structures.

On the bases for the sale of metal, and in other industries, factory-made devices are usually used, but this pleasure is far from cheap. To save your budget for more pleasant spending, it is more profitable to manufacture the device manually, on your own.

For this design, as they say, “you don’t need a lot of mind”, and there will be no shortage of details either, you can actually create the drawings of the pipe bender yourself.

Pipe bender options

You can bend the pipe at home, fill the pipe with sand, heat it to red with a blowtorch or gas burner, then bend the pipe. This method is not recognized as a priority among the masters, it is laborious and does not provide sufficient accuracy, creases and deformations may also appear.

In order to get a perfectly bent pipe, in compliance with the norms and specified parameters, and not cause damage to the source material, the craftsmen use specialized pipe benders in their work.

Lever-type pipe benders have become very popular. This elementary invention works on the principle of a "lever" - the force is concentrated in a certain place, and the bend merges with the shape of the template you created, which can most often be removed and replaced with another one.

Most often, a set of such structures immediately provides for a couple of additional templates for pipes of different diameters. There are units similar in design, manual pipe benders, drone or crossbow, they allow you to bend short sections of round steel pipes, subjecting only to cold working.

Crossbow devices are very compact, and are valued in the field of installation and utilities.

What is the job of a pipe bender

The principle of operation is quite simple, it consists in heating the pipe, the pipe heats up to red and becomes very plastic, pliable to changes. Each type of pipe bender has its own range of capabilities.

The main functions are the quality of bending and the ability to bend pipes of different sizes and diameters.

With the help of additional rolling devices, bending of a larger diameter is achieved. The device functions with the help of shafts, there are three of them in the kit.

Guides and pressure. The pipe passes through the moving elements, the degree of bending is set by the force of the pressure roller. If the radius of curvature of the finished product turned out to be small, the procedure should be repeated.

Pipe bend according to the template

In most cases, the simplest option, suitable for absolutely all craftsmen, even beginners, is a wood pattern. The boards are chosen according to the thickness of the pipes to be bent, be sure to leave a board margin of a couple of centimeters.

So that during operation the profile does not move out of the template, a slope is left at the ends. The template is rigidly fixed to the floor or other stable surface, and a stop for the pipe is mounted nearby.

The profile is inserted into the gap between the template and the stop, gently and gently press on its other end, pressing the pipe against the template. A winch or lever will make the job easier.

A huge plus of this process is cost savings and ease of execution.

Note!

Any device has flaws, and this method is no exception. The bend is not accurate, of poor quality, and the template will also be disposable (applied only to one pipe diameter).

Pipe bender-snail

In stamping identical blanks with a large circulation, a small radius of curvature, a snail pipe bender will become indispensable.

Its advantage is its small size and ease of operation. The disadvantage will be the limitation of the radius of curvature, but not large sizes.

Rolling pipe benders

The niche of versatility and practicality was occupied by hand-made devices - rolling pipe benders (bending machines), on such machines you can make any bending angle.

The configuration is not particularly different from other models, they also have a base and shafts. The movable roller presses the pipe, and stretches it through the rotation of the drive shafts.

Note!

Pressing can be increased using a winch, levers or an electric drive. However, for the production of a house, such a design is quite complicated in execution.

To reproduce such a unit, a lot of turning and welding work will be required. If you still decide to make such a model, it will serve you for a long time and will please you with functionality.

How to make a pipe bender with your own hands, the question in the modern world is quite relevant. To facilitate the task, you can find a photo of a pipe bender on the Internet in order to roughly understand how it should look.

There are also many pipe bender drawings that are easy to use. After reviewing all the information and evaluating your strengths and the availability of the necessary components, calmly get to work.

DIY pipe bender photo

Note!

Owners of private houses, as well as many home craftsmen, require pipes bent at certain angles for the manufacture of various elements of arched structures and pipelines. To do this, they use industrial, and more often home-made pipe benders for a round pipe. Professional factory pipe benders are expensive, so often such devices are made in-house, which saves money.

The device and principle of operation of the pipe bender

The procedure for bending the pipe is practically not complicated, but requires special attention. In the process of bending, it can receive defects in the form of wall stretching and a decrease in its thickness at the bend, which will lead to a decrease in the strength of the pipe. Also, the place of the bend can change the configuration of the cut and take the shape of an ellipse instead of a circular section, which significantly reduces the internal throughput of the liquid passing through the pipe.

Design features

To minimize bending defects, when choosing or manufacturing a pipe bender for work, you need to understand how it works. The manufacture of a pipe bending device consists of three stages:

These manual tubular benders can be mechanically or hydraulically driven, both of which are great for the home workshop.

The principle of operation of almost all pipe bending devices is the same. The workpiece is fixed in a special fixture and under a certain force takes the required bending angle.

There are various pipe bending devices, and, of course, each of them uses its own system of force. For example, in devices of a crossbow or hydraulic type, a point force acts on the bendable section of the pipe.

According to another scheme, bending is carried out using several rollers, between which the workpiece is rolled, a certain bending angle is obtained. According to this scheme, pipe benders equipped with special inserts for pipes (mandrel) work.

What is dorn for?

To figure out what the mandrel is used for, you need to know what can happen to the pipe during its bending if you do not use the mandrel. For example, when a workpiece is bent, two opposite forces act on some of its sections at the bend:

1. Compression of the wall of the inner radius, in which the metal, deforming, forms a wavy surface (corrugation).
2. Stretching. In this case, the metal wall of the outer radius of the bend is stretched, due to which it becomes thinner. Naturally, this can weaken the strength of the pipe in the section of the bend made by almost 50%.

Especially strongly, if you do not use a mandrel, thin-walled copper, aluminum and other pipes made of soft material can be deformed.

For the mandrel inserted inside the pipe in front of the flexible one, steel springs are usually used, selected for the inner diameter of the pipes to be bent. Sometimes the surface of the springs is coated with polyurethane to provide better stabilization of the pipe walls.

Types and manufacture of bending devices

There are not so many ways to bend the pipe, but there are a fairly large number of devices for performing these actions. However, they can be of various types. In order to make the right pipe bender for a round pipe with your own hands, the drawings can be compiled independently or freely downloaded from the Internet.

According to the principle of influencing the workpiece of a round pipe, in order to give it a bend at a certain angle, there are various types of pipe benders.

Crossbow type model

These models of pipe benders are driven by hydraulic or screw drives. In the process of processing the workpiece, the model is bent in the form of a crossbow shoulder, from which the name of the bending device came.

The design of the crossbow pipe bender in manufacturing has some difficulties, but its power and technical capabilities are quite large. The fixture itself can be made with several functions, such as being used as a bending machine and a hydraulic press.

Depending on the design of the rigid metal frame, the machine can operate in a horizontal position (a jack or other power device is located horizontally) and in a vertical position.

The design consists of a rigid frame and two rollers mounted on special racks welded to the platform. A jack is located in the center between the racks, and clamps are fixed to the axes of the rollers, which ensure free fixation of the workpiece that is laid on them.

A punch for a pipe bender (shoe, template) can be made from old rollers, pulleys, or bent and cut along pipes.

The work of the crossbow machine is done in this way:

1. A workpiece from the pipe is laid on the rollers and fixed with clamps.
2. A shoe is fixed to the jack (a template with a certain bending angle).
3. The jack presses on the center of the workpiece with a shoe and smoothly bends it to a predetermined angle.

Using the same technique, you can make a small manual pipe bender, with which it is easy to bend strong thick-walled pipes of medium and small diameter. For this purpose, you will need to purchase a small hydraulic jack, two rollers, make a punch and a strong metal T-shaped nozzle for the jack.

The entire design of the "crossbow" mechanism must be with a large margin of safety. Otherwise, if under the pressure of the jack, the workpiece breaks out of the fixing brackets, the operator may be injured.

Roller rolling system

Such pipe bending models are also called rolling. With this system, you can bend round or shaped pipes, as well as steel fittings to large radii. The ideal device for preparing arches for sheds or greenhouses.

The main elements of this kind of device are three metal rollers, matched to the diameter of the bent pipe blank. The workpiece is placed on two extreme rollers and the third, located in the center, is rolled along the pipe. Under his effort, the part gradually bends, acquiring a certain bending radius.

The system can be driven by a hand crank or by an electric motor through a special tube bender gearbox. The quality of the resulting product, which has been processed on this device, is quite high, and the pipe itself, in contact with metal rollers, is practically not damaged.

The advantage of a rolling pipe bender is its small size, due to which the tool takes up little space in any home workshop and can be easily mounted on a workbench or wall. And due to the fact that it is made entirely of metal, the workpiece in the process of bending it can be heated with a blowtorch or gas burner to facilitate work.

The simplest device

For urgent work where you need a manual round pipe bender to quickly bend an angled elbow, such as for domestic plumbing, you can make a simple bending device using available tools. To do this, prepare a lever from cutting a metal round pipe with a diameter of approximately 32-42 mm or thick, preferably smooth fittings. The length of the lever should be within 1-1.5 m, depending on the workpiece to be bent.

A ring made of thick-walled pipe cutting with a width of approximately 30-40 mm is welded to one of the ends of the lever. The inner diameter of the ring must be greater than the outer diameter of the workpiece prepared for bending.

Instead of a ring, two rods from a thick smooth rod can be welded to the lever. The rods are welded perpendicular to the lever and parallel to each other. The distance between them must be greater than the outer dimension of the workpiece prepared for bending.

The bending process is carried out as follows: P

1. The workpiece is laid on a hard, flat surface, it can be asphalt, concrete floor, reinforced concrete panel or thick board.
2. The tubular blank prepared for bending is threaded into the ring of the manufactured fixture or inserted between its pins, after which, acting on the lever with muscular force, it is bent.

winding machine

Pipe bending machines of this type differ from other bending devices in that the pressure roller presses the workpiece directly to the template itself, as if winding the pipe around it. This allows you to bend ring-shaped and spiral parts from blanks, which is completely impossible to do on conventional pipe bending machines.

During operation, the roller itself is in a stationary state, but the template, to which the end of the workpiece is rigidly fixed, rotates around its axis, winding the pipe over itself, which is why machines of this type are called winding.

The drive on such devices is most often electric, since it takes a lot of effort to twist the pipe into a ring. The mandrel for the template must be removable, otherwise it will be quite difficult to remove the workpiece curved with a spiral from it. The template can be made of wood, textolite or metal.

The advantage of the winding machine lies in its simple design, and the disadvantage is in some limitation in the size of the template and in the need for a powerful lever.

Wooden conductor

This design can be considered a break-in device, and the difference is that there is no pressure roller. For the manufacture of this device, you will need thick plywood or boards, as a base, you can use a workbench or a massive chipboard slab.

A template is made from a thick board, in which one side is rounded to a certain radius. It is rigidly fixed on the edge of the workbench in such a way that around it it is possible to freely wrap the workpiece prepared for bending.

The end of the workpiece can be fixed with a primitive wooden stop from a bar or trimming the same board from which the template was made. The bending of the pipe is carried out with the help of muscular strength smoothly, without sudden movements, then its damage will be insignificant, and the acquired geometric shape will turn out to be accurate and even.

So that the part to be bent does not jump off the template (punch), it is desirable to make a semicircular recess along the perimeter of its rounded part, processing the end with a round rasp.

Fixing the pipe on the template can be done in another way by stuffing a rounded piece of plywood on top of it, which should protrude beyond its edge within 6-10 mm. True, this option is well suited if the tube has thin walls, since more powerful efforts are needed to bend parts with thick walls, while the wooden punch can simply collapse.

Before bending the pipe, it is recommended to fill it with dry sand and plug both ends with wooden plugs.

This will help to avoid the appearance of waves (corrugations) on the workpiece from the inside of the curved section, and a large stretching of the metal on the outer wall of the bend.

Of all the existing pipe bending machines, the most widely used pipe bender is made by hand, the work of which is carried out according to the principle of a rolling fixture. Such a pipe bending model has practically no drawbacks, it has a small weight and dimensions, it can be freely transferred and takes up little space during storage.

Plastic pipes are welded by diffusion. This means that the material of the connected elements is heated until it melts. Then the edges are pressed against each other, and the particles of one of the parts penetrate into the structure of the other. The result is a monolithic connection. This principle is used in various welding machines and is the main one for all types of welding of plastic parts.

The standard sizes of plastic pipes are small and medium diameters - up to 75 mm. The size of the sewer pipe is 110 mm, and the risers are 220 mm. These are big diameters. Although in construction and industry it is customary to consider large sizes from 500 mm and above. Large pipelines are not found inside apartments and in rooms of private houses. However, large pipes are used, for example, when casing artesian wells.

Features of welding large pipes

Plastic materials have made pipe technology less labor intensive. Therefore, the installation of large pipes can also be carried out without the participation of specialists. Do-it-yourself welding of large-diameter plastic pipes is far from an easy task. The process will require the use of an assembly and welding installation to connect the fragments. It is best to weld the pieces end-to-end, since large manually installed couplings do not always provide a solid connection. Both mating parts must be absolutely identical in composition, that is, made from the same plastic.

Butt welding machines are complex and expensive. They can be hydraulically or mechanically driven. This equipment is easier to rent than to buy in a store. A welding machine of this level will be required for those who are constantly and professionally engaged in such work. The quality of the weld depends on the level of the apparatus. An experienced consultant will help you choose such equipment when buying. The world-famous German company ROTHENBERGER produces machines equipped with program control for welding large-sized plastic products. For domestic needs, it is better to choose simpler, mechanical installations. They will ensure the desired quality of the connection in the range of product diameters up to 200 mm.

Before starting the welding process, cut the edges of the fragments as evenly as possible. In this case, the manifestation of the barrel-shaped effect, that is, the bending of the edges of the cut inward, is highly undesirable. This deformation, unfortunately, occurs quite often. A large pipe under the influence of its own weight can take an oval shape, which also makes welding difficult. For precise cutting of pieces of large plastic pipes, there are special devices. But it is rather industrial equipment. When doing the work with your own hands, it will be enough to align the ends. Alignment is carried out by a trimmer, which is part of the welding machine.

The sequence of work on the welding machine for overall plastic elements

The set of the device must have movable clamps, a centralizer with clamps, a welding mirror for heating the ends. The instructions for the device will help you do the job correctly. A video from the Internet can be very useful, which clearly demonstrates the stages of the process.

1. The parts to be welded are fixed in the centralizer. One part is fixedly attached, the other can move along the frame of the device. This is important for creating the necessary force when joining parts.
2. The ends are aligned until a flat joint surface is formed. This procedure also provides cleaning of the surfaces to be joined. After that, the treated parts should not be touched with hands.
3. The ends are pressed against the welding mirror for heating. Under optimal pressure, a burr forms at the edges of the fragments, an influx of molten plastic. This is necessary to form a strong seam. After the burr is created, the pressure is minimized and heating continues. The heating rate is 1 mm in 10 seconds. Knowing the wall thickness of the product, you can calculate the warm-up time.
4. The decisive moment is the rapid removal of the heating surface and the alignment of the joints. The connection occurs at the molecular level. It is possible to weld parts with high quality only if the surfaces are completely free of contamination.
5. Then the welded structure is cooled in air, forming an even and symmetrical seam.

It is good to study the sequence of actions of a welder from a video on the Internet. These lessons are very useful for people who do not have these skills. Careful study of the instructions for working with the equipment and strict adherence to safety standards is recommended. As practice shows, welding large polymer pipes with your own hands is a difficult, but doable task.