Dryer for soldering chips with your hands: a diagram and a photo

The modern market of instruments represents a wide range of models of thermofenes, which are distinguished by a high level of efficiency. These professional devices have many functions. But their cost is quite high, so many collect a hair dryer for soldering chips themselves.

Device design

Thermophen refers to the category of devices designed for soldering materials that are subject to mild melting. In addition to its main function, the unit can be used for heat treatment of the surface in order to remove paint or to heat the article for bending, for example a pipe.

The design of the device includes:

• Housing, the characteristic feature of which is a high level of heat resistance;
• A device for injecting airflow;
• Element for heating.

The temperature of the dryer for soldering chips can increase to 750 ° C. To ensure this indicator, the power of the component for heating should be above 1.7 kW. An important function of the plant units is the ability to regulate the temperature, which increases stepwise.

The temperature required to solder the materials is controlled by the distance from the nozzle to the material. Most of the modifications are arranged in such a way that when the unit is separated by 7 cm from the surface of the material, the temperature of the air flow is reduced by half.

How is a hair dryer for soldering chips by hands? The diagram below will help in assembling the device.

For what purposes is it used?

Today such devices are used by craftsmen not only for the purpose of solder, but also for the removal of paint, which is especially necessary when working with a surface made of wood. When heated, the coating acquires elasticity and is cut off from the tree. Thermophane perfectly copes with this function at a temperature regime of 550 ° C when the nozzle is at a distance of 1 cm from the material. The heated air is also used to dry the surfaces.

Materials needed to assemble the instrument

To assemble a hair dryer for soldering microchips with your own hands, you should prepare:

• Wire;
• Soldering iron;
• Halogen bulb;
• asbestos;
• Heat-resistant adhesive;
• Heat insulating tube;
• Screws;
• Electric wire;
• Button to start;
• rheostat;
• compressor.

Features of self-assembly

Dryers for soldering chips, assembled with their own hands, create a hot airflow with a temperature of at least 850 ° C. The power factor of the component for heating should be 2.6 kW. All elements should be easy to get and be inexpensive.

The construction of the unit can be manual and stationary.

Homemade hair dryer for soldering chips by their own hands of stationary modification is much easier to assemble, since its dimensions are not limited, and there is no need to worry about the temperature in the handle area. But in this case, the dryer, which is a kind of soldering iron, will remain stationary. You have to move the part. More opportunities when working give a hand-held device. It should be small and give the chance to hold it with your bare hands.

Handle making

The handle must be subjected to maximum insulation. Often you can hear that when you solder, you can use a glove made of tarpaulin. This method is uncomfortable. The handle can be carved by hand with their ebonite. This work does not require special skills.

For heat insulation it is advisable to use heat resistant fabric. If you wrap it with a hilt, it will make it possible to work quietly.

The use of tubes of various metals is not recommended. There is an explanation for this. First, such a handle will undergo rapid heating. Secondly, it should be noted that the hair dryer is an electrical appliance that conducts a current. The smaller the metal parts, the safer the use of the unit becomes.

Assembling the heating element

The main problem when assembling such a device as a soldering iron for chips, with your own hands, is the creation of an element for heating. Heaters from household appliances by the type of hair dryer or soldering iron are inappropriate in this case. The necessary part should be made independently on the basis of the wire of their nichrome, the cross section of which is 0.4-0.8 mm. Nichrome with a large cross section provides high power, but at the same time it will be difficult to achieve the desired temperature. For a compact position of the element for heating, it will be necessary to make a spiral with a diameter of 4-8 mm.

The spiral must be wound on some base of cylindrical shape, made of a material with high thermal stability. In this case, quartz or porcelain in the form of an empty cone or tube is used. This base can be removed from the old dryer. More preferable is the quartz product from halogen lamp projectors based on a tube with a power rating of 2.3-2.6 kW.

In the role of the element responsible for the injection of air flow, a standard small fan is suitable. When assembling the hair dryer at home, this part will be the most expensive. The supercharger can be removed from an old high-power dryer. From fans of household purpose BAKU 8032 with capacity of 30 l / m will approach.

The assembled hair dryer for soldering chips with their own hands, the photo of which is presented in this article, operates from a 220 V electric mains and has a power of about 420 watts.

The cheapest and unified option is the use of a small-sized compressor for aquarium fish. It is installed together with a receiver (air collector). For this purpose, any small plastic bottle is used, since there will be no heating in the area of the installation, and hot air will come out in the opposite direction.

When making the case of the device, several options are used:

• Used material with a high level of thermal insulation (ceramics or porcelain). But these materials are not cheap and will complicate the design.
• Thermal insulation is used with a high degree of reliability for the distribution of hot air. In this case, the material is not affected by temperature, except for the area adjacent to the nozzle.

In the role of the body base, the handle also turns on, the basis of any medium-sized household hair dryer can be used. The body liner, that is, the nozzle, is made of a thermal insulation material that can withstand a heating temperature of 800 ° C. At the same time, it acts as an isolator of the remaining sections of the hull from the action of high temperature. The nozzle should be made of metal, taking into account the possible contact with melts during the soldering process.

Thermal insulation can be provided with elements of quartz (tube, plate, mica, fiberglass, glass, porcelain, ceramics, etc.). When manufacturing the unit, a heat-resistant adhesive will be needed.

The power regulation system can be assembled from old electrical appliances, provided that they are in working order. In the role of the switch, a key or button modification is used.

What tools will be needed?

It is necessary to prepare:

• A jigsaw;
• Vise;
• scissors;
• pliers;
• Hacksaw for cutting metal surfaces;
• drill;
• Brush;
• Screwdriver;
• calipers;
• Soldering iron;
• Taps;
• An ohmmeter;
• tester.

Basic stages of assembly

Homemade hair dryer for soldering chips is assembled in several stages. Work begins with the coil winding the heating part. The spiral is located on a steel wire with a cross section of 4-7 mm with tension. It is recommended to rewind the coil with a wire made of nichrome with a cross section of 0.5-0.6 mm. The spiral size is chosen taking into account the fact that the resistance index will be approximately 75-95 Ohm.

The spiral is wrapped around the tubular core of the halogen lamp from the spotlight or soldering iron. The spiral turns must be laid equally over the entire area of the base with a small gap. They should not contact each other. An asbestos or fiberglass layer is fixed on top of the laid helix. The last material is fixed with a heat-resistant adhesive. After that, the insulating tube of ceramics, quartz, porcelain, etc. should be put on the adhesive layer. The ends of the spiral are projected outwards. The ends and the output areas are also treated with glue.

The finished heating element is mounted in the internal channel of the body of the thermofan. The installation site is covered with plates of quartz, mica or asbestos for additional thermal insulation. The spiral leads are connected to the electric wire by means of a twisted fastening. The electrical conductor must have heat-resistant insulation. The wire is routed through the start switch and the rheostat to regulate the voltage applied to the spiral.

The air blower is flush with the opening of the heating element on the back of the housing. If the compressor or the air injection element does not fit in the housing, it can be mounted in the outer part of the housing end. In this case, a tube is connected to it, which directs the air flow. It leads to a heating element located inside the housing.

From the supercharger, lead out the power wires connected by the wire for heating so that the switch can control the power of both elements. The rheostat for regulating the air flow is introduced into the electrical supply line for injection.

The electric wire is led outward at the bottom of the handle of the housing, and the key or the switch button and the rheostat levers are fixed in any convenient place from the outside of the base of the product.

Next, half of the base is joined and fixed with each other. The tip is made of thermally insulating material of cone-shaped or cylindrical shape. Then, a metal nozzle is attached. The design should provide for replaceable nozzles with a different indicator of the diameter of the hot air outlet.

Basic principles of the unit operation

Homemade hair dryer for soldering chips works according to the following principle:

• When the button is pressed to start the fan and heater start to work; A narrow stream of hot air is sent to the desired point;
• Flux for brazing microcircuits by a hair dryer and solder begins to melt;
• The parts for the connection are heated.

This is how the parts are soldered.

Soldering of microcircuits

If you want to use a hair dryer as a device for soldering chips, the air flow temperature rises to a level of 700-800 ° C.

The air flow is directed by a narrow stream. The power of the heating element should be increased to 2.3-2.6 kW.

The handle must have a temperature that is comfortable for the skin of the hands. To ensure that the soldering does not cause any inconvenience, the handle can be provided with an additional protective layer of rubber.

Conclusion

Such a device, as a thermofan, can be used for many kinds of work related to the soldering of microcircuits and small parts. With the help of the unit, you can solder materials such as linoleum PVC film, dismantle radio components, dry joints on glue, reflow the ends of synthetic fibers, melts hot melt, etc. Soldering of SMD microcircuits by a hair drier differs high quality.

The device can be assembled on its own. At the same time, money costs will be minimal. A soldering iron for chips is assembled with the help of a conventional hair dryer. The heating element undergoes a major alteration. The idea of the unit remains the same as a conventional hair dryer. The air is pumped by the fan, passes through the heating element, acquires sufficient temperature for soldering the flux for soldering or tapping.