The construction hair dryer is a tool without restrictions. How to use a hair dryer correctly How to make attachments for an industrial hair dryer yourself

A construction hair dryer (aka "thermal gun" and "hot air gun") is very similar in shape and design to an everyday device for styling and drying hair, but with minor differences. If you are planning large-scale painting or installing plastic pipes, this device will be your reliable friend.

What is a building hair dryer for and what functions does it perform?

A thermal gun is more powerful than a hairdresser's hair dryer (930-2300 W), the temperature of the supplied air can reach 650 ° C, and the productivity ranges from 200-650 liters / min, depending on the model of the device and the tasks set. But the range of tasks to be solved is limited only by the experience and ingenuity of a person using a hot air gun. Below are just some of the possible uses:

Drying of surfaces.
Soldering of metal parts and parts.
Raising the temperature of metal connections before disassembling them.
Warming up adhesive mixtures before applying to the surface.
Heating up the connecting layer before separating the glued elements.
Welding and shaping thermoplastic parts (for example, creating a bend or fitting plastic pipes).
Heating of varnish coatings and paint coatings for their subsequent removal.
Warming up frozen water pipes.
Lighting fires for barbecue and shish kebab.

Now it has become obvious that the main function of the building hair dryer is heating and preparatory. Operating from the mains, the thermal gun has the advantage of flexible adjustment of hot air supply modes and does not need flammable fuel, gradually replacing the outdated blowtorch from the toolkit. And most importantly, do not try to style your hair or dry your pets with it, they will be very upset.

How to choose a building hair dryer?

Choosing a hair dryer- the task is not difficult, but when buying, it is very important to pay attention to such parameters as:

Power (from 930 to 2300 W). The temperature level directly depends on the power, the more powerful the hair dryer, the faster the surface will heat up. For the same tasks, the resource will be higher for the tool with the higher power. High power hot air dryers also increase the load on the network. Do not forget about this.

Power is a key parameter when choosing a hair dryer. It depends on him how quickly this or that task will be completed.

Maximum operating temperature (up to 650 ° C). The higher it is, the more versatile the device is and the more functionality it has.
Temperature regulation. For simplicity, all technical hair dryers can be divided into two categories: building hair dryer with temperature control and continuous temperature control. With the addition of one word, the difference between the two species becomes enormous. Models without continuous temperature control, as a rule, have only 2-3 modes of operation with a fixed temperature, allowing you to work in conditions of maximum, medium or minimum heating, narrowing the functionality of the hot air gun to almost a minimum, forcing you to accurately calculate the time and distance required for heat treatment ... You will have to get used to it, waste time and nerves. To prevent this from happening, you should immediately focus on models with smooth temperature control, insuring yourself against cases when materials of the same type may have different melting points.
The presence of a temperature maintenance system. Thanks to the temperature stabilization system, the hot air gun maintains the heating level of the air flow at a stable height, regardless of the load. That is, with an increase in the force of the air flow, the temperature remains unchanged. This indicator is directly related to the power of the device.
Overheating protection function. It will prevent the hair dryer from overheating or even catching fire in your hands during operation. But even if your hair dryer has this function, you only need to work with heat-resistant gloves.
The minimum length of the cord should be at least 2.5 meters so as not to feel discomfort when working full-length.
Some models are equipped with LCD screens to display the operating temperature. The option is not so much required as desirable. The prices of hot air guns with a screen can be significantly higher than without it, but the convenience of use also increases.
Depending on the model of the hairdryer and the manufacturer, special attachments are attached to it to expand the scope of application.

How to use a building hairdryer?

The scope of the construction hair dryer is very wide, so each task has its own approach. Consider a few:

1. Removing old paintwork. The easiest way to remove old paint is from wood surfaces. It is more difficult to clean metal products from paint, due to the fact that the metal has a high thermal conductivity and partially dissipates directed heat. And a real master class - removing paint from plastic coatings and surfaces - requires considerable skill, precisely selected temperature and correct timing. Everything we need for work: a wide-jet nozzle and a hot air gun itself.

Despite the ease of use, it is very important to observe safety precautions: during work, do not remove thermal gloves and safety glasses, work in ventilated rooms away from flammable and combustible materials.

We put on goggles and thermal gloves (safety first!), Set the hair dryer to the maximum operating temperature (depending on the model - from 500 to 650 ° C) and maximum air flow (up to 650 l / min). Next, we direct the hair dryer to the area from which we want to remove the paint. The device should be kept at a distance of 2-3 cm from the surface to be treated and wait until the paint starts to “blow bubbles”, announcing its readiness to leave its home. After that, you need to take a scraper or spatula and gently pry off the treated area. The paint will readily come off without leaving a trace. After that, you can start processing the new zone. It is important to indent a few centimeters between the areas so that hot air does not enter the already treated area.

2. Joining the seams of floor coverings. With the help of a construction hair dryer, you can quite simply weld the seams of several parts of the floor covering (PVC, linoleum, rubber) using a filler strand of a similar composition. The filler strand resembles a thin pencil in shape and should be identical in chemical composition to the parts to be welded. So, we fit the two parts of the joint coating close to each other, along the entire length of the seam we make a V-shaped hollow with a special cutter, melt the filler strand using a slotted nozzle (used for block welding of two parts of a homogeneous material) and fill the hollow. The operating temperature for the melt strand should be in the region of 300 ° C. Excess connecting material is removed from the seam with a special crescent-shaped knife so that the surface of the coating becomes even.

3. Welding of plastic pipes... The popularity of the plastic pipeline is growing every day, and today it is no longer necessary to call the masters to create a water supply / drainage communication, modern tools allow you to do this at home. First, let's find a welded mirror (reflector attachment) in our set. It is called a reflector because it prevents the welding object from sticking to the nozzle. In shape, it resembles a flying saucer: round and without any holes.

We attach the nozzle to the hair dryer, set the operating temperature to 200-300 ° C with a minimum air flow and leave it to heat up for a while in an upright position. When the required temperature is reached, the ends of the pipes are brought to both sides of the nozzle and slightly pressed. It is important to catch the moment when the plastic has become soft, to take the pipes away from the reflector and connect to each other. In this position, they need to be held for 20-35 seconds, resulting in a strong connection.

4. Welding of film coatings. Film coatings are usually welded with an overlap, placing the parts to be welded so that one part overlaps the other within 2–4 cm. Setting the working temperature of the hot air gun within 200–400 degrees and reducing the air flow to a minimum, blow the film in the area of the joint. The operation takes only a few seconds, and immediately after that the work area must be rolled with a roller. It is imperative to check the joint for strength by trying to break the connecting seam. If the strength is unsatisfactory, it is worth raising the temperature and repeating the procedure.

The building hair dryer once again proves the old rule: “Simplicity is your best friend”, and only your imagination is the main limiting factor in its application.

Hair dryer attachments. Expanding the possibilities! Many types of construction work have been around for a long time without the use of forced hot airflow functions. These characteristics are increasingly required in the use of the latest high performance materials in modern building technologies. It is for this reason that the use of a building hair dryer has become so relevant. With only one functionality, a hair dryer can solve dozens of tasks - from standard drying of products to welding linoleum. Carrying out such a variety of works became possible only thanks to the existence of a number of nozzles for the construction hair dryer.

Modern types of nozzles for the construction hair dryer Often, in the complete set for the construction hair dryer, from one to several specialized nozzles are additionally supplied for various types of work. They can also be called nozzles, nozzles, or nozzles. Some of them are quite often especially individual (designed for specific work) and are sold only separately from the tool, therefore, when purchasing a hair dryer, you should be prepared for additional purchases. This is especially true for the purchase of certain professional-grade models, which are distinguished by a rather high cost. The presence of a larger number of attachments makes it possible to perform much more types and volumes of work with different types of materials. It is the nozzles that are able to form the necessary air flow in a certain way, which significantly expands the standard capabilities.

The existing list of the most common nozzles on the construction market includes: round focusing nozzle (1) - most often designed for sealing gaps of various thicknesses using special plastic welding tapes. The nozzle is used for soldering copper pipes based on the contactless method of processing materials, as well as when repairing skis, veneers, boats, etc.; flat nozzle (2) - it is used when it is necessary to remove old putty or remnants of paint materials, film, wallpaper, including for the purpose of deforming polystyrene plates (under the supervision of a specialist), PVC structures and plastic products. For example, if polystyrene or plexiglass slabs are deformed; reflex nozzle (3) - heats up plastic pipes before their further deformation; slotted or slotted nozzles (4) - used when welding PVC products using the cap method; carved (cutting) nozzles (5) - a similar nozzle at one time was developed for the implementation of curly or straight cutting of foam; glass protection cap (6) - this nozzle is designed to work on surfaces that cannot withstand high temperatures (for example, glass and various products made from it). A glass protective nozzle for a building hair dryer allows you to remove residues from varnish, paints or putty from surfaces; welded mirror (7) - used in the processing of product joints using the contact welding method of various plastic materials; wide-jet nozzle - this is one of the varieties of flat nozzles that are used when removing paint from large areas; geared nozzle - considered an adapter for carved or slotted nozzles. In addition, the gear nozzle can be safely used for spot welding; welded nozzle - the purpose of this nozzle is to directly connect synthetic-type welding cables. As a rule, the most common among users are considered to be wide-jet, reflective, flat, cutting, focusing and slotted nozzles.

Due to the fact that nozzles are made of metals that have a fine structure and which can be very hot and quickly heated during operation, it is important to remember that after finishing work, the hair dryer must be allowed to cool down. A hot nozzle can damage or spoil the material being processed. Therefore, when working with a hairdryer, you should use a special metal stand. Do-it-yourself nozzle for a construction hair dryer The average price in stores for nozzles ranges from 298 rubles. up to 2000 rubles However, if desired, each master can make some types of attachments with his own hands. For this, even pieces of chrome-plated pipe with the required diameter suitable for a building hair dryer can be useful. To create a nozzle-shaped nozzle, you need to make 4 identical cuts on the pipe and cut out right-angled triangles from all sides, then bend all the resulting parts inward, as in the pictures.

For dismantling and mounting SMD parts and microcircuits made in SOP, QFP, PLCC cases, as it was written in the first article, a regular soldering iron is not suitable. For these purposes, soldering stations are used, model PS-902, on the left and SR-979, made by "Solomon", on the right, are shown in the photographs. The station is equipped with a temperature controller, an air flow controller, an automatic static electricity dissipation function, an automatic cooling system after the power is turned off. The soldering station, in particular the SR-979, allows for soldering and suction without changing nozzles. The stations consist of a main unit and soldering irons. In addition, nozzles are supplied for different types of bodies (15 varieties). The stations are designed for supply voltage: 220 volts 50 Hz. Adjustable temperature in the range of 100C - 400C. This is, in short, everything I wanted to say about the industrial soldering station. The dream of many radio amateurs and workshops, which until recently was the "Blue Dream" and now you can buy different models and even at a price.
Here is a set of photos of factory attachments. To enlarge the photo, just click on it with the mouse.

This article is not about factory installation. Not everyone has the means, although the station pays off quickly with a large amount of work, many want to simply "construct", do it with their own hands. And even if such a setting is rarely used. So far, nowhere is there a description of the manufacture of a soldering station and nozzles for it.
Here we will tell, together with the author of homemade nozzles, about making them with your own hands. "With your own hands", it is loudly said, you will have to connect to the manufacture of a turner-milling machine, better of course a familiar one. Yes, and you will have to solder (not soldered in the photo) nozzles to the disks not with a soldering iron, but it is better to contact a refrigeration equipment specialist. They solder the tubes with a special silver-based refractory solder. But perhaps it is possible with copper, I am not an expert in this. I do not think that it is possible to weld with gas welding or, even more so, electric welding, very thin walls at the nozzles.
And so, the photos show a homemade nozzle with a hairdryer.

What is the material of the cone and cut-out rings?
-Everything is made of steel, and the guide nozzles are made of tin, some kind of tinned, thickness 0.4mm. Later, when all the nozzles are made, I will give them to be coated with nickel, they will be no worse than the branded ones.
-Your hair dryer model?
-We have these hair dryers on sale, they are not construction, but specially for radio engineering. There are three types, the price is $ 10-12, they have a temperature regulator, a wheel, just of course, but it's better than nothing, in principle it will work.
-I think that you can use one cone nozzle and screw different inserts-rings. Make only the thread. Or without thread, but so that they fit tightly.
-It will not work, during operation the nozzle heats up great, accordingly, scale forms, it will be inconvenient to screw the bottom with nozzles into this cone, and I also specially tried to reduce the diameter of the cone so that the nozzle turned out as narrow as possible so that it did not interfere with its fields, i.e. the diameter of the lower part of the cone is as small as possible, see pictures.
-The thickness of the walls of the parts, indicate for all, the dimensions of the nozzles and the distance between them for different nozzles. The diameter of the part that is screwed in, the thread pitch, in short everything that concerns the dimensions.
-The dimensions were taken from the original nozzles, which the soldering stations are equipped with, I am sending a PDF, everything is indicated there, for different types of nozzles.
-How is the air temperature regulated? As I understand there is no such possibility. Or the air flow rate of the hair dryer itself?
-The temperature is regulated by a hairdryer, as I wrote above. I will not alter this hair dryer yet, I am starting to work out how to make another element for supplying hot air, more aesthetic and convenient.

That's all for now. There will be additions, we will definitely add and, if possible, write in more detail.

Here are the dimensions of the factory nozzles.

A construction hair dryer or a technical hot air gun is a tool that has come to replace blowtorches in due time. A modern building hair dryer allows you to release a powerful jet of hot air, which allows you to heat, burn and even solder surfaces. But this tool works from the electrical network, which means that it has more advanced capabilities. The construction hair dryer differs from the simple hair dryer that we use at home to dry our hair in its power and air temperature.

The construction hair dryer can smoothly adjust the temperature, which is very convenient when processing various surfaces of the material. There is also a temperature stabilization system, it is electronically controlled, so the supplied air flow is always the same temperature, and the spiral itself is not very overloaded. All construction hair dryers are equipped with a heat-shielding casing, it allows you to correctly direct the air flow, if you remove it, the risk of burns increases. The handle on the hair dryer is closed, it does not burn your hands during operation.

Types of nozzles for a technical hot air gun

The functionality of a hair dryer largely depends on the nozzles (nozzles), which are supplied in the kit or sold separately. Round nozzles allow you to solder copper pipes and profiles, they are also used when welding plastic cracks. Flat nozzles deform plastic, remove old layers of paint, wallpaper and putty. Glass screen protectors also remove paint, but can be used on windows with glass. Reflective nozzles heat plastic pipes for deformation.

Like any tool, a building hair dryer (technical hot air gun) requires careful handling.

Several rules that will allow you to operate the hair dryer for a long time:

- when working, first let the hair dryer warm up the spiral, that is, it is necessary to let the hair dryer run idle for at least 2-3 minutes. The same applies to turning off the hair dryer, after finishing work, reduce the air temperature to a minimum and hold it for 2-3 minutes in this state. This will allow the coil to warm up and cool down evenly;
- follow the instructions of the device. Each job requires its own temperature and air flow rate;
- in no case block the air intake grilles, this will overheat the engine, and it will simply fail;
- the room should be well ventilated when working with a construction hairdryer.
- It is very important to remember that when heated, many materials begin to emit harmful substances, and some can catch fire.

The instruction does not always reveal all the nuances of how to use a construction hairdryer. This multifunctional tool will come in handy in a wide variety of areas of life and will prove to be very useful in production. Its main function is to warm up and direct air masses. Replaceable nozzles are used as auxiliary elements, designed to accurately supply a jet of air and protect the surrounding objects. However, the use of the building hair dryer does not end there.

The list of operations performed with a construction hairdryer includes hundreds of different types of work. Describing the purpose as a whole, the tool is useful where precise and directional exposure to high temperatures:

drying, heating, removing paintwork, wallpaper;
bonding, deformation, welding of materials;
defrosting communications, metal products, locks, rusted bolts;
heating or drying adhesives;
tinting, stickers, films;
installation of heat shrinkable parts and other installation work.

The construction hair dryer is widely used for car repairs, creating decorative elements from plastic or foam, when laying water supply systems made of polypropylene. It is an indispensable tool during major or minor repairs, why it is most often purchased. The complete list of possible applications of the construction hair dryer can be expanded and supplemented with clarifications, but the general idea will not change.

Only the limited performance of the tool is capable of somewhat reducing the range of use.

Governing bodies

It is quite simple to use a technical hairdryer; not only an experienced master, but also a beginner will cope with this task. The design of the tool is very simple and straightforward, all controls are located on the handle or on the side of the body.

In household models, the power key serves as a temperature regulator and has several positions. Sometimes this adjustment is supplemented by a smooth one, brought out by a separate slider. Professional hair dryers are equipped with a block electronic control, in them the temperature is set with special keys or a roller.

The air flow rate is not regulated, it is linked to the temperature and is set automatically. This decision is quite logical, because the heated coil needs to be cooled, otherwise the instrument will simply burn out.

In general, this is all about tool management. In addition to being a safe device, the hot air gun is often equipped with protective options designed to preserve equipment and keep the operator safe.

First use

After the first connection of the hot air gun to the network, foreign smell Is normal for a new device. The heating element and the coil warm up, dust and grease residues burns on them, the specific aroma passes quickly.

Only the smell of melted plastic should be suspicious.

As the manufacturers indicate in the passport, before starting work, or at its completion, the tool must work at a minimum temperature or in cooling mode for several minutes. This will eliminate sudden temperature changes and extend the life of the hot air gun.

Despite the safety of a technical hair dryer, the general safety rules:

the user must wear protective goggles and gloves;
all operations are carried out in well-ventilated rooms, some materials, when heated, can emit harmful chemical fumes;
it is necessary to use a variety of loops, hangers or hooks to protect the tool from breakage.

The main list of what can be done with an ordinary industrial hairdryer will interest those who are planning to make repairs in a house or apartment. It is also recommended to watch several video reviews on the operation of the hot air gun.

How to remove paintwork

Removing paint or varnish is a very common operation for a hot air gun. If earlier this procedure took a lot of time, then with the help of a hair dryer the problem becomes a minor task. Using various attachments, the user removes the top coat from any material whose temperature or melting time is higher than the paintwork.

This method of removing top layers of paint requires a hair dryer that works at a temperature of 550 - 600° C... The nozzle of the hair dryer is directed to the area to be treated and held until bubbles appear. After the paint is peeled off and removed with a spatula. The operation is easiest to carry out on wood products (windows, fence, window sill), but it is more difficult to remove paint from metal. The high thermal conductivity of the metal structure dissipates heat, reducing working efficiency.

It is even more difficult to remove paintwork materials from plastic, such work will require considerable skill, good theoretical knowledge of the minimum and maximum melting temperatures.

Another popular area of application of the tool in everyday life is the connection of plastic pipes with a technical hairdryer. With the help of a hot air gun and a reflector nozzle, you can lay the water supply. High air temperatures will not only melt and glue the couplings, but also help shape a pipe.

To achieve a strong connection, you need to correctly determine the moment of welding. Two parts of the pipe are brought to the nozzle, heated to a soft state at a temperature of 200-300 ° C. Then they are connected together, holding for 30-40 seconds.

Welding seams

Bonding seams of linoleum or PVC with a hairdryer is performed in several steps. First, the materials to be welded are adjusted, after which at the point of gluing at an angle, their edges are trimmed with any knife.

The future seam is superimposed filler strand, then it is blown in the right place with a hot air gun at a temperature of about 300 ° C. When the composition becomes liquid, it is spread over the seam with an ordinary rubber spatula and allowed to dry.

Bonding films

Another example of what a building hair dryer is for is working with films. The material used is easily exposed to temperatures, therefore all actions must be as clear and fast as possible. The film is welded with an overlap, one edge is superimposed on the other by about 3 cm along the entire length of the seam. When working with such materials, it is enough to set minimum temperature, process the place of gluing, then roll this place with a roller.

If the temperature is found to be insufficient, the operation is repeated with a slight increase in productivity until the seam is strong.

The construction hair dryer is very popular with experienced craftsmen. The tool is widely used in construction site, design or renovation. With its help, you can make various crafts or decorative elements, weld, melt, dry or deform materials, building compounds.