If you are interested in how to connect two aluminum pipes, we will tell about the intricacies of this case and will reveal his small tricks. The need for this operation appears quite often in everyday life and sometimes quite experienced masters May be confused. As a rule, this task is performed using welding or threads. But there are other ways. After all welding work Not only expensive, they require professional equipment and specialists and can not always be performed in the right place. In addition, sometimes connecting the pipes very quickly, without waiting for the arrival of the welder with the equipment.
To quickly, securely at home to combine aluminum pipes, special fasteners are created - fittings.
They are divided into two types:
Fittings not only productively decide how to combine aluminum pipes without welding, but also simplify the installation process of any communication networks or manufacturing different designs.
The most popular fittings of the crimp type of installation, or rather - press fittings.
Why crimp fittings advise:
The coupling is the most common type of fitting elements. High-quality clutches with fasteners allow you to quickly and reliably provide a reliable docking of two or more pipes. It is often used and such a variety, like a gebo coupling.
Flanges with rubber pads make it possible to ensure reliable docking of pipes. Such elements are preferable to choose with a large cross section.
Also on the question of how to connect the aluminum pipe among themselves, it may give an answer to such a device as a repair and mounting clip. This is a coupling or triple appearance of a fitting consisting of 2 parts that are fitted with each other. This is very good way For the express version of the docking of pipes - for example, when an accident or other emergency situation.
No less effective and simple way of docking pipes by clamp that provides reliable connection. It is delayed on the one hand than not like the clip. The compound is therefore considered more durable.
Pipes from aluminum square, rectangular or other cross section are usually connected by means of a crab system or clamps.
The crab system is the narrow metal strips of 2 parts interconnected. They have the appearance of letters T, x or g and can reliably cover pipe cuts. The resulting joints are characterized by great reliability. But the docking occurs only at right angles and is made for pipes of a small section size.
The more universal method of docking the pipes of the complex profile is the clamp. We offer to pick up and buy an aluminum tube on our website at competitive prices and in an extensive choice.
Copper pipes are applied when installing gVS systems, Hydz, air conditioning, heating, gas supply. They are expensive, however durable, plastic, resistant to corrosion. But in order for engineering communications from them to decades, the connection copper pipes Must be done correctly.
We will tell how the device of copper pipelines, providing a tightness of the transported medium or circulating coolant. In the article submitted to familiarization, the installation technologies are described in detail. Taking into account our advice, the construction of systems will be performed "on excellent".
To perform installation of internal pipelines in the house, you can choose a pipe from plastic, metal-plastic or stainless steel. But only analogue from copper is able to serve without problems and overhaul more than half a century.
Correctly mounted copper pipeline systems in practice, work regularly throughout the service life, which is assigned a cottage or apartment building.
The fittings and joints of the joints of the soldering on statistics of accidents are used to be more reliable than the copper pipes themselves - if the breakthrough in the system is happening, only on the wall of the pipe
Pipes made of copper are not terrible long thermal loads, chlorine and ultraviolet. When freezing, they do not crack, and with a change in the temperature of the inner medium (water, drain, gas) do not change their geometry.
Unlike plastic analogs, do not sag. This plastic is subject to expansion at high temperatures, with copper of this, does not occur by definition.
Pipe copper products have two drawbacks - high price and softness of metal. However, the high cost of the material pays off a long service life.
And so that the walls of the pipes are not damaged from the inside erosion, filters must be installed in the system. If there are no contaminants in the form of solid particles, then there will be no problems with the destruction of pipelines.
When working with copper pipes, the following rules must be followed:
If in the system of the water pipe or heating in the house, in addition to copper, there are also pipes or elements from other metals, then the water flow should go from them to copper, and not vice versa. The current of water from copper to steel, zinc or aluminum will lead the rapid electrochemical corrosion of the pipeline sections from the latter.
Copper pipes are cut and bent without problems, even a beginner master is able to cope with them into a single pipeline system. You only need to find the appropriate tools and follow the instructions.
Thanks to the plasticity and strength of the metal, copper pipes are cutting and flexing. Rotate the pipeline can be performed both by using pipe bending and using fittings. And for the device of branches and compounds with various devices, there are many parts from heat-resistant plastics, brass, stainless steel and bronze.
In most private houses, household water pipelines are assembled from steel and aluminum pipes. In heating systems there are also radiators made of steel or aluminum. Incorrect cutting into such a wiring of copper pipes is fraught with considerable problems.
By construction standardsTo eliminate corrosion processes in the pipeline from various pipes, the water flow should be sent to copper
Most optimal option Installation is the use of pipes and devices exclusively from copper and its alloys. Now without problems, bimetallic aluminum-copper radiators can be found, as well as appropriate fittings and shut-off valves. Combine different metals It is only in extreme cases.
If combination is inevitable, then copper must be closed in the chain of the elements of the pipeline. It is impossible to save it from the ability to carry out electrot.
And if there is even a weak current, this metal creates with steel, aluminum and zinc galvanic pairs, which inevitably leads to premature corrosion. When installing the water supply between them, it is necessary to insert adapters from bronze.
It is also a potential problem - oxygen in water. The more its content, the faster corrosive pipes. This applies to pipelines from both one metal and made from different.
Often the owners of cottages allow a serious mistake, often changing the coolant in heating system. This only leads to the addition of completely unnecessary portions of oxygen. It is best not to change the water completely, but to add it when there is a need.
To in a single pipeline system, you can use several methods of their articulation. Different plumbing apply crimp and press fittings, welding or soldering. But before starting work itself, you need to decide on the pipeline or detachable.
There are three mounting technologies for connecting pipes from copper:
All these technologies can be applied in the formation of both the detachable and all-in-disposal system. There is more question of using a variety of fittings and adapters or a refusal of them.
If the design can not be disassembled without the destruction of its individual parts, it is considered to be delicate - it turns out cheaper, but it is more difficult to repair it
If the pipeline system is needed detachable, as well as a simpler repair and addition of new elements, then the connections must be made detached.
For this use fittings:
The detachable connections are easier to perform independently, you can do without soldering. They do not require a master of unnecessarily high qualifications.
However, such nodes need constant inspection and pulling nuts to exclude leaks. Pressure and temperature drops in the system lead to weakening fasteners. And from time to time they are recommended to pull up.
If access to copper pipes is planned to close the tight of the trim or concrete screed, It is best to connect them in a deline design of soldering or welding. Such a system is more reliable, durable and resistant to impulses.
It is forbidden to damage from copper. This metal is too soft in its structure. With the device of the detachable pipeline, all threaded connections should be made by fittings. Recently connect with a copper pipe with pressing or soldering.
Before performing compounds, copper pipes are prepared in a special way:
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Copper pipe cutting is made of metal or pipe cutter. The line of the cut should be exactly at right angles.
After cutting the end of the pipe is necessarily processed by the game to remove the slightest irregularities and burrs
A portion of the pipe immersed in the fuel prepared for soldering is thoroughly cleaned from dirt and degrease
No cleaning and degreasing coupling, removal or tee, which will be soldered to the pipe
Copper Copper Pipe Before Connection
Removal of burrs a gratering agent
Degression and stripping of the outer surface
Stripping Curbus Coupling and Fitting
Before connecting the segments of copper pipes, you need to cut them in accordance with the wiring scheme and prepare. It will take the pipeline or hacksaw for metal, pipe bender and a file. And for stripping the ends does not hurt and fine-grained sandpaper.
Only having a scheme of a future pipeline system on their hands, you can calculate the required amount of consumables. It is necessary to determine in advance, where and what diameter of the pipe will be mounted. It is necessary to clearly understand how much the connecting elements will be required for this.
To perform automated or manual welding of copper pipes, electrodes and gas are required to create a protective environment (nitrogen, argon or helium). You will also need a welding machine on constant current and in some cases burner. The electrode may be graphite, tungsten, copper or coal.
The main disadvantage of this assembly technology is significant differences in the characteristics of the seam and metal pipe obtained. They differ in chemical composition, internal structure, electric and thermal conductivity. With incorrectly performing welding, the junction may even dispense.
Due to copper doping as a result of a welding seam available in the electrode, a welding seam is very different from the main metal welded
Welding copper pipes can be properly connected only by a qualified master. It requires certain knowledge and skills.
This embodiment has a mass of technological nuances. If there is no place in the plans to do it yourself, but there is no experience with the welding machine, it is better to use a different way of compound.
In domestic conditions, copper pipe welding plumbing is rarely connected. It is too complicated, requiring specialized skills and time consuming. It is easier to use the capillary soldering method using a gas burner or a soldering lamp.
The technology of soldering pipes from copper is based on the capillary lift (seeping) of the latter after melting on the gap between two pressed metal planes
Copper pipe soldering:
Of particular difference in the final result, these methods of braking copper pipes do not have. The connection in both cases is obtained reliable and durable to the gap. The seam with a high temperature method is somewhat stronger. However, due to the high temperature, the gas jet out of the burner increases the risk of burning the pipe wall metal.
Solders are used on the basis of tin or lead with the addition of bismuth, selenium, copper and silver. However, if the pipes roll for the feed system drinking water, then from the lead option because of its toxicity it is better to refuse.
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To implement low-temperature welding, it is not necessary to have special equipment and special performers skills. You can spend it own forces
The compound of low-temperature soldering is used mainly in the assembly of pipelines from soft pipes R 220. They maintain a pressure of 220 N / mm², which does not exceed the operating parameters in household heating and water supply networks
To perform low-temperature soldering pipe and solder, it is enough to warm up the standard soldering lamp
To create a melt, filling capillaries and the gap between the connected pipes, uses a light-melting solder, which quickly melts and freely spreads along the crop
Low-temperature welding in living conditions
Bay with soft copper pipes
Soldering lamp for low-temperature soldering
Use of low-melting solder
Two ways of spike piping from copper diffuses:
The first option provides for expanding the end of one of the connected pipes with a special expander. Then, this socket is put on the second pipe, and the joint is soldered with the help of solder.
The extension of the end is made so that there is a gap of 0.1-0.2 mm between the external and inner walls of the combined products. More is not necessary. Solder on it due to the capillary effect will still fill the entire existing lumen.
In this technology, it is important not to damage the pipe when expanding. If it is made of solid copper (R 290), it will have to be superbilled. At the same time, the metal at the articulation site acquires the properties of a soft counterpart. It is important not to forget about these changes when calculating the parameters of the operating pressure in the pipeline.
The use of special fittings for capillary soldering makes it possible to eliminate errors with the degree of pipe expansion in the formation of the termination, they are initially fitted for the desired
To simplify the soldering with your own hands of the elements of the copper pipeline, it is enough to purchase ready-made couplings, turns, tees and plugs. They already have the necessary fallen. The use of these parts leads to an increase in the cost of assembly work, but they greatly simplifies them.
To purify the metal at the site of soldering and lubrication of the solder, the ends of the connected pipes are covered with flux. It should be applied solely on the pipe walls outside. Curses and fittings from the inside are not processed. This is simply no need.
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To perform high-temperature soldering, the use of gas propane or acetylene burner is required
For the operational conduct of low-temperature smelting, fittings are used with a light-melting point in them. They are permissible to apply when performing high-temperature soldering
To improve the quality of the solder, the connected pipes are covered with flux, which plays the role of metal lubrication and trancing. In a high-temperature soldering, a boar is used as a flux
For the production of high-temperature soldering, it will take refractory solder from bronze or silver alloy with copper. It comes in the form of hard rods with a diameter of 3 mm
Propane or acetylene gas burner
Using fittings with fused solder
Processing Flux Connection Zone
Sodle refractory solder
To perform the spike tubes are inserted into the socket and heat the burner. When the desired temperature is reached, solder is brought to the gap. He begins to melt and fly inside.
If it falls too much into the joint, it will follow the pipeline from the inside, which will lead to a narrowing of the inner diameter of the pipe. And with a small flow rate, the compound is not sufficiently proplayer.
If problems arise with the use of solder, then you can use fittings in which it is already in the desired volumes. To simplify work now, at the factory, the capillary belt from the corresponding alloy is brought to these connecting elements. This item needs only to wear onto the pipe and warm up the burner.
The in-disable connection of pipes from copper can be performed using a press clutch or crimping (collet) fittings. Instead of solder, a sealing ring is used instead of a solder. The first option is clamped onto the pipe with special ticks, and the second - the ones with the nuts and the key to them.
1. The easiest and most reliable way, connect something or attach to aluminum or its alloys is, of course, bolt and nut or ripples. All other methods require some training, devices, special solders, fluxes for soldering aluminum, etc.
As practice shows, aluminum does not roll at all in the usual way, tin-lead soldier, the cause of this is an oxide film, which is formed almost instantly after cleaning the soldered surface.
2. Therefore, one of the ways of soldering aluminum is - surface coating, immediately after stripping, layer of molten rosin. Not the best, but after multiple attempts, rubbing the sketch of the soldering room, you can achieve satisfactory results.
3. Next, you can use for soldering aluminum a solution of rosin in diethyl ether. We clean the surface and immediately lubricate this flux, and then sprinkle with copper sawdresses, which serve as an abrasive for removing the oxide film, and the place of the soldering, the usual solder (tin-lead). After, we solder to the loving platform copper wire or something else.
4. Next technology soldering aluminum - the use of a special solder for soldering aluminum and flux. Most of these soldiers are low-temperature, but, their melting temperature is higher than that of tin-lead, in the range of 300-600 gr. S. Pledge of success is also a good warming and for this use a gas burner or a soldering lamp.
High temperature solders are used to solder massive parts, they are repaired and restore parts from aluminum and its alloys of any complexity (cars, motorcycles, etc.). Spike turns out very durable. In this way, tubes are soldered, such as aluminum and copper, inserting one to another and covered around. But, when solding aluminum with other metals, see the solder and flux to be designed for one and other metal.
The surface is covered and covered with a special flux, as in previous cases, and when solder melts - you can crush the scene of the solder of stainless steel knife (or a stainless steel brush) so that the oxide film is better. Thus, we affect the aluminum surface and solder everything we need to.
This does not end the ways of soldering aluminum at home. You can apply an electrochemical method.
5. We clean the surface and put into place soldering a few drops of a concentrated solution of copper mood. Then, we take the power supply to 5-12V and the current about 1 ampere (can be more), connect to the power supply to the resistance of 4-5 ohms and power. 5-10 W, and our fixture is ready. The load is calculated in such a way that the BP is not burned during operation, i.e., about 1-5 amps current.
Now the aluminum workpiece is connected to the negative pole of the power supply, and to the positive - we connect the bare copper wire (you can twist it into a small flat spiral), which is then injected into a drop of a sulfate solution so that the end does not touch the surface of the part. Everything is ready, turn on the power supply and wait a few minutes. The copper layer, as a result of electrolysis, will fall into place for soldering. And then, washed off (but not try to erase copper), Ludim, and solder wires or terminal. This method, of course, is not suitable for soldering any massive parts, and for contact with the wires it is suitable.
6. Alternatively, instead of a sulfur solution, a hydrochloric acid can be used: drip into the place of soldering and then led copper drive through the contact site. The precipitation of copper occurs faster than in the first case, but with acid you need to be careful. And the place of the soldering is necessarily thoroughly rinse with water.
So that the acid does not have an excess area, it can be sealed with a tape or pour paraffin, and the desired area is screamed. T. about. You can make a soldering of aluminum with copper and other metals, and the contact pads will have a beautiful neat shape.
That's all, and if there are some other ways to solder aluminum or additions to the above, write.
Victor Donskoy
www.masteru.org.ua.
Hello dear visitors. A long time ago, in those even times, when in Russia, the use of the Radiocommunication range has just been allowed, it urgently took a simple antenna. Naturally the simplest and not requiring Su (matching devices) is GP. There were tubes from the old "Wave Channel" and broken clamshell.
It was necessary to connect three tubes into a single whole, i.e. Get a pin with a length of 2.7 m. The inner diameter of the tubes from the clamshell was 2mm larger than the outer diameter of the tubes from the old antenna. Here and came the idea to use a split pipe, which could have an inner diameter, both more than the outer diameter of the connected tubes, and less. In the first case, such a width in the pipe must be made in the nozzle, at which when compressing the nozzle of the clamps, it fits the connected tube.
The connected way of the tube has a good electrical contact. The connection is solid. If necessary, the whole system is very quickly disassembled. I hope everything is clear from the photo 1 and 2. In photo 1, it is shown just one of the nozzles of the GP antenna, the traces from old clamps are visible. In this way, wooden parts can be connected.
Using such a compound (see photo 3), you can make collapsible, light backups under the branch fruit trees. In stores selling cuttings for rakes, which have a length of 1.2 ... 1.5 meters, diameter from 3 to 4 cm. 
Using a couple of such cuttings, a pair of worm clamps and a split pipe made of aluminum tube of a suitable diameter, you can make an excellent backup. Another advantage of such a connection is the ability to tighten the clamps when, for example, dries a cutting wood. A pair of screwdriver turns - and the connection becomes hard again. Sometimes the cuttings shovers break, especially when they are made of birch, and under hand there are no new, in this case it is also possible to apply such a connection in the place of break. It turns out a kind of bandage.
For three years, I broke the cosy at the Spit in the place where the handle was embedded. Shipping braid is very serious and painstaking. Again I remembered about the split pipe. I thought temporarily, and it turned out like Russians. The Cosovich was broken so that it had to shorten it, so instead of a circle nozzle I used the tube with cut ends. That's how everything looks.
Aluminum pipe due to its qualities is quite common building material. It can be used in the construction of various pipelines, drainage and ventilation systems, as well as for the manufacture of various structures. How to choose the right tubes, make a dock and laying pipes, read further.
Pipes made of aluminum, possess the following positive qualities:
All qualities presented belong to pipes consisting of 95% aluminum and more.
The positive characteristics of aluminum products cause their scope. Pipes from this metal can be used:
When choosing aluminum pipes for the construction of a particular object, such aspects should be considered as:
IN modern production The following methods of making aluminum pipes are used:
Aluminum pipes can be round, square, rectangular:
Before building any design, such parameters should also be taken into account as:
Each type of pipes is manufactured in accordance with the GOST, which also regulate the typical dimensions of the products. So:
GOST also regulates the inspection and testing methods, which guarantees high quality products.
Before the construction of any pipelines and other types of facilities should be familiar with possible methods Connections of aluminum pipes.
The main way of connection during the construction of pipelines is welding, which is performed according to the following scheme:
The welding process is presented in more detail.
The profile tube used in the construction of frames and other forms, in addition to welding, can be connected by bolts. For this you need:
When installing various structures, you can use other ways, for example, the arrangement of the connection with a threaded fitting, but all similar ways of labor costs and can lead to a violation of the system sealing.
