Quite often with people occur ridiculous situations. For example, the stole repair of the pipeline in the house, the owner causes installers. Of course, specialists take a certain amount of money for their work. The final price is formed from the amount of materials spent, as well as the actions that they performed. Starting to understand, the customer does not always understand that for actions and for which they were committed by experts, as a result of the clock dispute.
Undoubtedly, in this situation, the customer looks ridiculous, as, without silent, challenges the final cost. In order to avoid such a situation, especially regarding the replacement of old pipes to new, polypropylene, one should independently understand what is the coaller for polypropylene pipes And why it is necessary.
Undoubtedly, today are the most sought-after, as it is endowed with a number of advantages. However, in addition to a large number of advantages, polypropylene has a number of features that should be considered when choosing this material. You should not forget two very important factors when choosing data of pipes:
Reinforcement allows you to some extent to solve both problems. By itself, reinforcement copes well with thermal expansion, in addition, it also does not give plastic soften and deform when high temperatures Heating. but correct installation The pipeline from requires some knowledge, including how to use the carrier.
To date, there are two versions of the polypropylene tube:
Not many know, especially when taking care of an independent shift and installing the pipeline, that before installation, it is necessary to carry out the reinforcement. But it is very important!
What is it needed for?
It is a simple process consisting of several stages. Each stage involves the use of a special tool, without which the stripping cannot be produced. One such tool is a carrier for polypropylene pipes. It is worth noting that under fiberglass reinforcement, the stripping is not required, since the grid is reliably hidden between the polypropylene layers, which rescues it from contact with water.
In the case of external or internal aluminum reinforcement, the stripping is required at mandatory. So, in the first version of the foil covers the top surface of the pipe. The installation of the pipeline involves the connection of its individual elements by fitting or gluing. In this case, it takes a slight melting of both surfaces of the pipe. Of course, the polypropylene alloy in some way is welded with aluminum, which will negatively affect the reliability of the structure, and it will eventually crumble. Avoid this easy, doing foil stripping.
The second option when the foil is conveniently located inside the pipe, implies the carriage of polypropylene pipes, since aluminum will be in direct contact with water. If you lower the coaling procedure, the slightest potential difference will result in the destruction of the structure as a result of electrochemical processes.
Most simple to remove foil with external reinforcement. Simple tools will help in this case - couplings with steel blades inside. It is easy to use them, it is only necessary to insert the coupling pipe into the cavity and turn the blades, the blades will make their work quickly and clearly. It is very convenient to use double-sided couplings with which it is easy to produce with different diameter from each other.
Internal stripping carried out by the carrier. Externally, the design of the carrier is practically no different from the couplor design. So, this tool is a flour, the blades in which are located on the side of the inner end of the device. As in the first version, you need to insert a pipe into the cavity of the device and make several turns.
Universal tool with which you can remove reinforcement, both internal and external, is a drill with special nozzles. Externally, they differ from the same carrier by the presence of a steel rod, which is necessary for installation in a drill nest.
Above mentioned a few words about the carrier and about what the pipes need to be traced. It is worth carefully to stay on this instrument and understand its device. Quite often you can hear another name of the carrier - a slid tool for stripping the middle layer. This name is fully justified by the specialization of the tool, with which it is easy to clean internal reinforcement Pipes.
The device for the polypropylene pipes allows in two accounts to clean the pipe from the foil to the depth required to connect it with the fitting. Inside the tool there are steel knives that, when turning to the tool, gently cut foil to the required level.
It is worth noting that modern carriers are equipped with a system of adjustable knives. Due to this, the possibility of one-time acquisition of the tool appeared, which is suitable for working with pipes of different manufacturers. Using the regulator, you can quickly customize knives to any level of foil. In addition, there are carriers on sale, on both sides of which there are cavities intended for pipes of various diameters. This approach also avoids the waste of funds for the purchase of an additional tool.
When carrying out permanent enrollment work, it is recommended to purchase a drill nozzle in the form of a carrier. In this case, a person will not need to clean the pipe with a manual way. Drill allows you to process a large number of pipes in a short period of time without the use of physical strength.
It is worth saying that automatic cleaning is suitable solely for large and regular amounts of work. One-time carrying should be made manually. It is important to remember that polypropylene - soft Material, and the slightest deviation will damage the pipe. Manual torching is unable to harm the product.
Today, you can find a large number of instruments varieties, not an exception to the carrier. The cost of this tool varies from 300 rubles and up to 1000. Of course, you can find the goods and at a higher price. Choosing a tool, you need to carefully inspect its condition. There should be no damage and burrs. Any flaw can damage the pipe when it is placed in the carrier, or the pipe may not fit into it at all. No less carefully belong to the state of the blades. It is important that they are made of steel, the softer material may be damaged by contact with aluminum or do not cut it out.
You can find and replacement blades for the tool. Of course, with time and with frequent use, they may come into disrepair. Replace the blades much easier than buying a new tool. The greatest popularity today are the carriers intended for pipes of the following dimensions:
The cost of goods directly depends on its size. Thus, the carrier for small pipes will cost much cheaper than an analogue designed for pipes with dimensions of 50/63 mm.
Metal in domestic communications gradually replace various materials from polymers. Especially attractive to the consumer properties of polypropylene, allowing you to use it for all household communications.
Polypropylene is resistant to corrosion and sediments, does not change properties under the influence of aggressive chemistry. Water transported through systems from this material does not lose its properties. It is important for a large bandwidth, due to a completely smooth inner surface.
Types of reinforcement
The non-reinforced polypropylene is characterized by low thermal conductivity and resistance to high temperature. Over time, he changes the form. This property is called fluidity, which requires the installation of fasteners every 50 cm of the pipeline.
Especially bright fluidity is manifested at elevated internal medium. The main purpose of reinforcement is to reduce this particular quality. After the reinforcement, the polypropylene material becomes more rigid, it helps less when laying in a horizontal position, which makes the system more stable.
Aluminum tape reduces linear expansion coefficient to a level that comparable to this indicator of metal products. In addition, aluminum contributes to a decrease in the conductivity of oxygen. Yet better quality When reinforcing fiberglass. This material makes the installation easier than the aluminum tape, as it disappears the need for stripping before soldering. It is also important that products with fiberglass cheaper than products with aluminum ribbon.
In reinforcement, a solid or perforated aluminum foil can be used. It can be located near the outer shell or in the middle of the wall. The solid foil is connected to the polypropylene with a thermoclaus. The use in the production of poor-quality raw materials entails separation during operation.
This phenomenon is impossible if the reinforce is used perforated aluminum. The foil holes make it possible to create a monolithic compound of plastic with aluminum without using glue.
When choosing products from polypropylene, it should be borne in mind that some manufacturers in order to reduce costs use low-quality raw materials and make too thin walls from pipes. It entails separation and instability to internal pressure. According to external signs, it is quite difficult to distinguish a high-quality product from poor quality. It is necessary to purchase a material with the most thick walls (that is, the one that has a heavier running meter).
Recently, polypropylene tubes reinforced with fiberglass appeared on the market. Sometimes they are called fiberglass. If the product, aluminum reinforcedIn fact, consists of five layers, the use of fiberglass makes it possible to obtain a material with a monolithic structure, since the middle layer is the same polypropylene, but mixed with fiberglass. All three layers are not glued, and welded, which completely eliminates the bundle.
However, one disadvantage of fiberglass reinforced products is still - their linear extension by 6% more than when using aluminum. Why do you need stripping for polypropylene pipes before soldering. Some reinforced products before soldering must be cleaned to remove the outer layer of polypropylene and aluminum foil, which prevents the creation of a durable compound with the fitting.
The stripping of reinforced polypropylene pipes is always required when aluminum is used for reinforcement, and, regardless of where the foil is located. Difference only in the tool used. If aluminum is located in the middle of the wall, the carrier is used. Material reinforced with fiberglass, stripping does not require, as it consists of polypropylene.
Tool for stripping
The enrollment tool for polypropylene pipes makes it possible to work with products with a diameter of 16 to 110 mm. For diameters up to 63 mm, double-sided couplings are performed, which allows you to clean the ends with two different diameters if the aluminum layer is located at the outer surface. Knives of this tool are made of inoperative steel.
If the foil is located in the middle of the wall, a carrier for polypropylene tubes is needed, equipped with regulated knives, which makes it possible to adjust the tool for any diameter. Just like the coupling, the carrier has a bilateral design (under two different diameters).
Torching of polypropylene pipes is the cutting of foil from the end to the depth of welding. If this procedure is incorrect, aluminum will prevent reliable connection Between the elements of the system, that is, the welding seam will not be high enough. During operation of the system, water will interact with aluminum, which can lead to leak and formation of rust in heating devices.
Another way to solve the problem "How to clean the polypropylene tube" is the nozzle on the drill (Shaiver). This method is used with a large amount of work for stripping the outer layer of polypropylene and removing the reinforcing aluminum layer, if it is located at the outer surface. The case of the shawl is made of aluminum, knives from instrumental steel.
Thanks to the seventur, the stripping for polypropylene pipes is automated, alleviating and accelerating installation with a large amount of work.
The use of pipes in the composite metal structures is very profitable: the pipes give the compounds increased strength and rigidity, at the same time reducing the mass of the node. However, the pairing of pipes with each other is laborious, and requires special training of ends. This work can be facilitated using special fixtures - tubes for pipes.
The task of the tube transporter is minimizing the gaps that are inevitably obtained when the ends are fitted manually, as well as to give a welded compound sufficient aesthetics.
It is known that when connecting and inserting steel pipesDepending on the corner of their mutual inclination and diameter, the mutual conjugation curve can be parabola, arc or even straight. Therefore, the analytical calculation to perform a successful conjugation is very difficult. The problem can be solved by spatial 3D-modeling using well-known compass programs or AutoCAD, but in practice they come differently.
In mass production, tubing pipes are produced using milling machine, equipped with a dividing head. The method is accurate, however, it requires the availability of appropriate equipment that is not always available homemade Masters. At the same time, having a powerful metal drill (from 1000 W) and a crown cutter, you can quickly complicate the end of any pipe.
Industrial options for such devices in special literature are referred to in Tube Notcher (groove cutters, although curvilinear contours are capable of performing.
The pipe carrier includes:
With the help of the transporters under consideration, it is possible to compile pipes with a diameter of 6 ... 75 mm, which in most cases is quite enough. The range of changes in the conjugation angles is from 45 to 210 0. It should be noted that the crown cutter is not included in the device kit.
For the processing of long pipes, manual tubes with a chain clamp are used, and for short products, the reference and guide parts of the device are combined in one node. Safety of work is ensured by the presence of locking rings that limit the longitudinal movement of the shaft.
The shaft is the most structurally complex element of the carrier. First, it should receive a longitudinal movement as the cutter is introduced into the metal pipe. Secondly, vibrations are created during milling, which are caused by a sharp fluctuation of the torque of the base power tool. Therefore, the shaft is made polished, has a sliding landing of high qualitate accuracy, and the used bearing - needle-type, which allow axial and radial loads compensation.
The price of such devices from 8,000 to 50,000 rubles. At the same time, all transcers for the pipes of the dimension line TT are quite compact devices that are fixed in the cartridge turning machine. Similarly, the electric drill is fixed. When processing pipes of a small diameter, the device can be leaving right in the floor of the workshop.
With the mass production of shaped profiled pipes (for example, in sports car and motor, or on plumbing repair areas), the hand-made pipes can be made independently. For this, the source scheme of the carrier, which is shown in the figure, is done under the available homemaster of the workpiece.
The design consists of the following details:
For the manufacture of the shaft, you can use the front rack of the passenger car shock absorber (for example, the VAZ - it is easier to get them in the car service). In addition, the brand has become a shock absorber rack according to its strength and performance characteristics It fully complies with the requirements of the rigidity for high-quality steel (and, moreover, aluminum) pipes. For the direction of the shaft, the guides of the rack itself are suitable: they have a surface wear-resistant coating based on antifriction alloys. The ends of the rack are naturally subject to additional processing - under the fastening in the cartridge drill, and under the installation of the crown cutter.
Needle bearings should be selected into the guides, the size of which is selected by the gaps of the guides. Two bearing mounted in the cylinder guide of the recovered hydropress stroke will provide the desired rigidity and parallelism of the main operating unit of the carrier. Bearings are installed simultaneously with both ends of the housing.
The existing advice regarding the installation of fluoroplastic guides should be skeptical because the bearing capacity of fluoroplast is significantly lower than bearings.
For the manufacture of other elements of the homemade trailer for pipes, it is possible to use profile rental - corners or chapels of the appropriate size. Profiling and manufacturing notches better perform on the jig milling machine, thereby guaranteeing the accuracy and parallelism. It will not be difficult to make a clamping device, for which a new clamp is suitable with a necessary diameter and length.
The swivel lever must have sufficient hardness, so it is necessary to use a thickness strip with a thickness of at least 12 ... 16 mm. On that part of the case where the rotary lever is installed, it is worth applying angular risks for which it is easier to position the pipe.
The need for the processing of end elements of such pipes is due to the following:
A carrier for polypropylene pipes that have reinforcement includes:
Sheer is necessary for external tube transportation. It consists of two parts - a guide which is made from a durable grade duralumin D16T and carbide, the cutting part. At introduction into the pipe, the latter rests on the guide and then turns the drill (and a drill can be used) and the cutting part is made of the reinforcing layer of the pipe. Since the shaver has a definite length, then the transportation for different pipes Always produced on the same length that facilitates their subsequent connection.
The price of the carrier-nozzle for polypropylene pipes depends on the diameter, and is 400 ... 2000 rubles. Manual type coals Cheaper: from 250 to 800 rubles.
