A device for cutting a sheet with a grinder. Attachments for grinders - you can buy, but it's better to do it yourself

From the author: hello dear readers! The problem of energy efficiency is of interest to everyone lately more responsible homeowners. Many of them want to make their home as cozy, warm as possible and not waste money. Numerous articles on the Internet are devoted to the question of how to increase the heat transfer of heating batteries. In this material, we will analyze the most affordable methods that allow you to increase the heat transfer of the central heating system in an apartment.

Experts say that the air temperature in the room does not always depend on the quality of the batteries. Before taking on the calculation of the heat transfer of the radiator, we advise you to check the thermal insulation of windows and doors. If everything is normal with these positions, then you can proceed with the modernization of the heating system.

Instructions for enhancing heat transfer

The main factors that can positively affect the quality of work heating system, the following:

• the color of the batteries and the cleanliness of their surface;
• correct reflection of heat;
• increase in the size of radiators;
• circulation of air emanating from a heat source.

Each of these theses should be taken into account by a diligent owner if his goal is to live in warmth without paying astronomical bills for additional heating of the home.

To improve the efficiency of the heating system in an apartment or a private house, home craftsmen will first have to remember a school physics course. As you know, the heat transfer of dark-colored objects is much higher than that of light-colored surfaces.

The conclusion suggests itself: if you need to increase the efficiency of heating a room, it is enough to start by repainting the radiators in dark color. It has been experimentally proven that a battery painted bronze or brown gives 20-25% more heat than a similar white radiator.

However, before painting the entire heating system or part of it, it is recommended to carry out ... wet cleaning! The fact is that a layer of dust significantly reduces the heat transfer of the entire heating system, acting as thermal insulation. Thus, keeping the battery clean is not just a matter of hygiene and aesthetics of the home, but also a simple method to improve its efficiency.

Dust is not the only "enemy" warm batteries in heating season. Numerous layers of paint on the radiators also serve as thermal insulation. If you are planning a redecoration of the heating system without replacing its components, then the craftsmen advise you to remove the previous layers of paint and only then re-paint the pipes and radiators.

Tip: for painting batteries, it is better to choose special enamels with minimal thermal insulation.

DIY heat reflective screen

The battery has one negative property - it heats the air equally in all directions. Thus, part of the heat goes to the outer wall. This situation can be improved on your own. To do this, you need to fix a reflective screen on the wall behind the battery. Its role can be played by ordinary foil, which is glued directly to the wall or to the insulation layer.

It is fixed with liquid nails. Some homeowners who do not want to spend too much time on this process simply place a piece of foil of the appropriate size behind the radiator, without fixing it with anything.

Instead of foil, a black metal surface with corrugated vertical ribs can be used. It absorbs heat, acting as an additional convector.

More sections - more effect

Suppose you are in the process of installing in your house or apartment. Before proceeding with the process of installing radiators, it is very important to make detailed calculations of their power required for a particular room. In order to find out how many sections are needed, the following data is used: the volume of the room and the rated power of the heater. The videos below have step-by-step instruction calculations of these parameters.

If the repair has already been completed, and an error was made in calculating the power of the heating system, the master can always eliminate this oversight by conducting a local reconstruction. Sectional-type batteries are “reinforced” by adding sections, and for panel structures, a different method applies - replacing panels with more powerful ones. Of course, all works of this kind are carried out only in summer time when the central heating radiators are turned off.

You will not have to pay more for heating if the apartment does not have heat carrier flow meters installed. Regardless of the number of radiators or their size, during the heating season you will pay fixed bills, but at the same time the air temperature in the room will rise significantly.

Tip: in spacious rooms it is better to install multi-section batteries, because with an increase in the area of ​​\u200b\u200bthe radiator, its efficiency also increases.

It should be noted that if the power of the entire system was initially calculated incorrectly, then an increase in the number of heat sources in the network is not the most The best way improve its heat dissipation. By applying this method, you can greatly increase the load on the network.

There are several simpler available ways increase the radiator area without purchasing additional sections. We are talking about a screen made of aluminum or a protective casing made of steel elements, which are heated directly from the battery, increasing its area and efficiency.

Additional devices

To solve problems with heating, you can use a fan heater. With it, the efficiency of even a small radiator will be significantly increased. To do this, the appliance is sent directly to the battery. A fan heater or even a simple computer cooler may well be a temporary measure to increase the heat dissipation of batteries, especially for bimetallic and aluminum radiators. This measure allows you to increase the air temperature in the room by an average of 4-5 degrees.

Using a more efficient model

In some situations, efficiency can be improved only by a radical method, replacing them with new ones. Note that even high-quality heating systems after two decades of operation need to be updated due to the fact that their resource is being depleted. Technology does not stand still, which means that older-style radiators use less efficient and energy-intensive materials.

Another important argument in favor of replacing old batteries with new ones is the improved design of the latter. AT modern models the heat transfer area is much larger, in addition, manufacturers have developed innovative radiator parts to increase their performance. We are talking about convection windows in the upper part of the device and vertical ribs.

Summing up, we note that the advice of experienced craftsmen given in this material will help raise the temperature in the apartment by 2-4 degrees. If you can’t cope with the problem of heating with your own hands, then you will have to resort to the services of professionals. We will talk about how to calculate the power of the heating system and organize its installation in one of the following articles. Stay tuned for site updates and see you soon!

Often in apartments, especially old buildings, it gets colder every year in winter. People have to acquire and use, which leads to a significant increase. But why overpay for the overspending of electricity, if there are cheaper options for correcting the situation? Today we will talk about simple ways to increase heat transfer. heating batteries, which do not require significant costs, which are quite within the power of any home master to bring to life. It is worth considering the reasons leading to a decrease in the temperature in the room.

Most often, the cause of a decrease in heat transfer is scale and accumulating inside. If the radiator itself is flushed (which utilities should do annually), then heat transfer will increase significantly. The same applies to the risers. However, it will not be possible to carry out such a procedure on our own due to the fact that during the production of such work (even in summer) it is necessary to drain the water from the system. You can't do without the help of specialists. The same applies to the replacement of radiators from cast iron to - they have a large heat transfer. Therefore, we will not dwell on such complex and time-consuming options. Better consider more simple ways, which can be performed by anyone, even without experience in a similar area.

We use a reflector screen: the use of polyethylene foam

Use is a fairly popular method of increasing heat transfer. Polyethylene foam with foil coating On the one hand, it is perfect for these purposes. Such a screen (it should be larger than the radiator itself) is placed behind the battery with foil in the direction of the room and fixed on the wall with double-sided tape or liquid nails. Foamed polyethylene provides additional insulation, and the foil reflects the heat that warmed the wall before installing the screen, directing it into the room.

Important information! It is best when such moments are thought out at the stage of installation of radiators. In this case, a steel ribbed shield can be fixed behind the radiator, which will accumulate heat, and then direct it into the room. Such shields are convenient if there are frequent power outages.

Increasing heat dissipation with accessories and paint

To increase the air temperature in the room, special aluminum casings are used, which are put on the radiator. With their help, the area and, as a result, their heat transfer increases. The cost of such casings is small, and the effect is quite significant.

The color in which radiators painted, also has great importance. It is better for these purposes to choose darker shades. For example, a brown-colored radiator has a heat transfer rate greater than white ones, by 20-25%.

Improving convection by increasing air circulation

Everyone knows that improvement contributes to faster heating of the room. For these purposes, you can use a fan, which is installed in such a way as to achieve the maximum flow of warm air towards the room.

Helpful information! If you have computer coolers at home that are not in use, you can install them under the radiator, directing the airflow upwards. This will maximize convection, resulting in a significantly warmer room.

You can increase (if the radiator is recessed under the window sill) by cutting holes in the window sill and closing them screens or decorative covers. Thus, warm air will not linger in the niche, which will improve circulation.

This country can not be defeated! Self-assembly fans to improve convection:

General rules for improving the heat transfer of heating radiators

In order not to encounter a decrease in the heat transfer of batteries in the future, it is worth thinking about this even at the stage of installing radiators. The main rules are:

• obligatory behind the radiator, possible installation of a steel screen;
• installation bimetallic batteries instead of cast iron;
• installation at the inlet and outlet of the radiator (this will allow, if necessary, to independently flush the sections or add additional ones without shutting down and draining the entire system).

If you follow these simple rules during installation, it will subsequently be much easier to increase the temperature in the room without seeking help from specialists. And this is additional savings for the family budget. Let's summarize

There are a lot of ways to increase the heat transfer of heating radiators. Today we have considered only the main ones. However, it should be remembered that it is always easier to think everything through in advance, at the installation stage, than to put in a lot of effort later, without being sure that the result will be significant. Unfortunately, in Russia everything is done on a whim. The final advice of the editors of the site will be the following recommendation: think about the future and do not spare money during installation. The financial resources saved today can turn into costs tomorrow, which will exceed your savings many times over.

Optimization of heating costs is directly related to an increase in the efficiency of the entire system. This can be achieved in several ways. But experts recommend that you first analyze and identify the most significant factors affecting this indicator. Based on these data, the actual efficiency of boilers and heating systems is calculated: an overview and ways to increase this indicator will help reduce the financial burden during maintenance.

Reasons for reducing the efficiency of heating boilers

Even before you increase the efficiency of the heating battery, you need to decide on this parameter. In fact, it consists of several components - the efficiency of the boiler, radiators and pipelines. But besides this, it is necessary to take into account the magnitude of the heat losses of the building.

Therefore, you must first not think - how to increase the efficiency of the heating battery, but to improve the thermal insulation of the house. Only by reducing losses through walls and windows can one begin to modernize heating. It is erroneously considered that the main indicator of the system is the efficiency of gas heating boilers or their solid fuel counterparts. However, in fact useful action system is determined by the following formula:

Q=Vout/Vdelivery

Where Q- efficiency indicator, Vcons- the amount of energy spent on heating the coolant, Vstep is the actual heat transfer to the air in the room.

When analyzing the operation of the boiler, especially the gas type, it is clear that it does not function all the time. It must maintain the level of heating of the coolant at the set thermal regime. Other elements of the system are responsible for the transfer of energy - pipelines and radiators. It is they who first of all need to be given attention, since the efficiency of the heating system by 80% depends on their proper functioning.

What needs to be done so that this indicator is initially maximum:

• Choose low temperature regime work. With a minimum difference in water heating after the boiler and in the return pipe, energy costs will decrease;
• Usage electronic systems controls - thermometers and programmers. They will allow you to automatically change the operation of the boiler with temperature fluctuations in the house and on the street;
• To carry out the modernization of the elements in order to reach the maximum efficiency of heating in the house.

All these methods are interconnected with each other. Therefore, when organizing heating, you need to professionally go to each stage.

During the design of the system, it is necessary to calculate its main parameters - heat losses, the operation of each node and the optimal temperature regime. You can do this with online calculators(high error) or by ordering a service from specialized settlement offices (accurate data).

Boiler Efficiency Improvement Methods

The first step is to choose the right type. heating equipment. The determining indicators for the organization of heating with high efficiency are the type of fuel used and the power of the boiler. Gas-powered models have proven themselves best.

As can be seen from the graph data, there is no significant difference when the boiler is operating in normal mode. The difference in efficiency for gas heating boilers occurs only at the time of start-up until the required temperature regime is reached (50-70 ° C). Then there is a stabilization of the work and the performance indicator. But to improve the latter, you can take the following steps:

• The difference between the calculated and actual power of the boiler should not be more than 15%. Exceeding the value will lead to incomplete combustion of gases, which will further increase fuel consumption;
• Use of the condensation factor. This will slightly increase the efficiency of the entire heating system. However, the cost of condensing boilers will differ from traditional ones by 35-40%;
• Reducing heat loss through the chimney. The increase in the efficiency of the heating battery directly depends on this factor.

By fulfilling these conditions, it is possible to increase work efficiency by 1-1.5 percent heating appliances. But it's best to buy first. suitable model cat, which maximally corresponds to the parameters of the entire system.

During the operation of condensing boilers, the accumulated liquid must not be disposed of into the sewer. It has a number of harmful elements that will affect the work autonomous system sewage treatment.

Rules for connecting radiators and their modernization

Of greatest interest are other elements - batteries and pipes. To increase the efficiency of the heating battery, you must initially choose the appropriate model correctly. Ideally, it should have a maximum thermal conductivity. This applies to aluminum and bimetallic batteries. If we take the efficiency of heating radiators, the table will show significant differences from cast iron ones. However, it should be borne in mind that the cooling of aluminum will be much faster. This material does not store heat. In addition, in cast iron there is an uneven distribution of the energy received.

For comparison, you can consider the table of efficiency of steel-type heating radiators.

The larger the area of ​​\u200b\u200bthe battery, the faster the air in the room will heat up. But you need to take into account the degree of cooling of the coolant. It is desirable that the temperature regime of the radiators in the house be the same.

Radiator Connection Methods

Having decided on this parameter, you can proceed to the main subtleties of increasing the efficiency of the heating battery. The main one is the way to connect to the system. It is best to connect to the system on one side of the instrument. Then the coolant is passed through a full cycle through the battery.

But in practice, this is not always possible. Therefore, they prefer to choose the "golden mean" - the upper supply and the lower connection to the return pipe. This technique has the following advantages:

• It is possible to achieve an increase in the efficiency of the heating battery in other ways, compensating for 2%;
• The optimal length of the highway, which also affects the efficiency of the entire system;
• Possibility of installing a Mayevsky crane and an automatic thermostat.

Such a scheme is relevant for systems with both upper and lower piping. But in addition to this, in order to increase the efficiency of the heating battery, it is necessary to correctly install it.

Before purchasing a specific radiator model, you need to find out possible options its connections are top, bottom or side.

Installation of radiators for maximum efficiency

The main rule for the installation of radiators of any type is the optimal heating of the room. Those. they should be located in the area of ​​the room where the heat loss will be maximum. This primarily applies to window structures.

In order to make heating with high efficiency, the window sill must overlap the upper plane of the battery by 2/3. You also need to take into account the recommended distances from the structure to the walls and floor:

• From the window sill to the top of the section - 100 mm;
• From the floor surface to the battery - 120 mm;
• From the rear panel of the radiator to the wall - 20 mm.

In this way, the maximum efficiency of the entire heating system can be ensured. convection currents warm air will partially linger in the window sill area, heating the wall and reducing heat loss through the window.

For better convection of warm air, you can install a low-power fan.

Other ways to improve the efficiency of the heating system

What else can be done to improve the efficiency of batteries in heating and not only them? You need to choose the right coolant. Despite the popularity of antifreezes, they have a drawback - a reduced energy intensity. Therefore, in the absence of the possibility of exposure to negative temperatures on the system, it should be filled with ordinary distilled water.

To increase the efficiency of old-style gas heating boilers, the burner is replaced with a more efficient one. It will not only reduce gas consumption, but also increase the safety of the boiler. The same applies to the possible modernization of solid fuel models of heating devices. If a gas main has been installed in the house, a new burner can be installed. It is recommended to purchase models that run on both gas and liquid fuels (diesel, waste oil).

You can make the maximum efficiency for heating in the house by systematically cleaning the pipes. For this, chemical, hydraulic or combined methods are used. The choice depends on the material of manufacture of the pipeline (plastic or metal) and the degree of contamination of the line.

Installing reflective screens behind the radiators will also increase the efficiency of the entire heating system. It is best to use penofol for that, on one side of which a layer of foil is applied. Even a simple cleaning of radiators from dust and dirt will improve their heat dissipation slightly, but not much.

In the video material you can see an interesting way of self-organizing heating with a high efficiency index:

The master made this cutting device, having encountered a problem in order to evenly dissolve the sheet metal into strips with a grinder, while having a sufficiently high-quality and even cut edge. I looked on the Internet how this issue is being resolved, I borrowed a lot that you added your own. It turned out to be a handy tool.

Device for accurate cutting of metal

Bulgarian 1300 watts, mounted on a homemade guide with bearings. They move along a 40 x 40 square acting as a rail. Got 7 pieces. From 4 sides I fixed it on the rail, 2 between them, and one below moves along the plane. On the guide, the grinder was installed with the help of a fastener, fixed with a handle. On the other hand, a bolt. There are slots here, you can choose the height of the disc.

There is a small nuance.

To get a high-quality cut and avoid biting the disk, you need to very evenly set the angle grinder and disk vertically. Side mounts are not enough for this, because the grinder changes its position slightly to the right or left when loaded. To do this, the master did the following. To prevent this, there are holes in the lid of the grinder, exactly the same for the handle. He screwed a bolt into it, fixed it with a nut. I drilled exactly the same hole in the plate in parallel, screwed in the bolt, and fixed it with a nut on both sides. Set it to a straight vertical position. Tighten the two nuts on both sides. Added bottom bearing. The height was already known after fixing. Got four points. The grinder is very firmly and firmly established, when moving, there are no backlashes, no swings occur. This allows you to cut thick metal - five, six.

In terms of security, I added a cover, since the front side disk is located towards the worker. If a disk comes across of poor quality, or it bites, so that even if it shatters, the fragments do not fall on a person, he added protection. Screwed it to the native.

There were no problems with replacing the disc, the distance allows you to insert the key, unscrew the nut, change. Added top rail. For what? It happens during operation that the disk bites or sticks. Since the revolutions are high, the entire structure, together with the angle grinder, can fly off the bottom rail. To prevent this from happening, I added this rail. The height is adjustable with a bolt. For smooth running on both sides added bearings.

Vadim Ivanov.

Straight cut guide angle grinder

Let's make a simple fixture for the grinder. An idea has been spinning in my head for a long time and I decided to bring it to life.
The device is simple, so you need a minimum of materials. The first and main thing is the Bulgarian herself. The author of the homemade product uses a rechargeable battery, but it turned out to be weak. Therefore, he recommends the usual 220 volt.
A piece of a profile pipe 40 by 60 millimeters and a length of 150 and a profile pipe with sides of 25 millimeters. You can choose the length according to your needs. For example, I decided that a piece 1 meter long is enough.

We start with markup. From a pipe 40 by 60, you need to cut a corner with sides of 50 by 35 millimeters.
Cut out from the rest of the pipe. We cut off two more strips 25 and 20 millimeters wide. When all the blanks are made, we proceed to welding.
Wrapping profile pipe sheet of paper to make gaps between the parts to be welded and the pipe. We expose all the blanks, as shown in the video. Clamp with clamps and grab. You can scald everything and grind the seams.
We got the detail.

The device is working. I regretted that I installed the carriage on the battery angle grinder. It is much weaker than the network. Most likely, we will later remake the carriage for a network one with a 125 mm disk.
An even cut is obtained with the help of a device.

Video China Master

It is a universal tool that can cut tiles, stone, metal. It is also suitable for surface grinding. versatility this instrument is that it can be converted into a stationary machine.

In some cases, such a design is required, which would simultaneously combine the functions of an angle grinder and cutting machine. The problem can be solved by purchasing a separate machine, but these will extra costs. In addition, such structures are made of duralumin, which does not fix the grinder well, as a result of which the work is of poor quality. The problem can be solved by making a special fixture. You can do it yourself.

Purpose of a device for cutting metal and its device

The attachment for the grinder is made to perform the following tasks:

• smooth cutting of knife steel;
• cutting dales on blades.

A self-made tool for cutting sheet metal includes the following components:

• air intake that removes dust;
• clamping carriage with handle;
• pendulum mechanism with disk.

The air intake removes dust. It is connected to the chip vacuum cleaner with a hose. During the operation of the device, dust enters the hose and moves along it to the chip vacuum cleaner, which prevents air pollution in the room.

The clamping carriage with a handle consists of a plate having a thickness of 3 mm, a length of 15.5 cm, a width of 11 cm. There is an M8 thread in the middle of the plate for fixing the handle. There are two notches on the plate. There are two steel sections under the plate, M6 threaded holes are made inside the squares, bearings are installed on the thread, under which screws with a diameter of 6 mm are used as axes.

Usually 6 screws are used for the clamping carriage. The carriage handle is a removable mechanism designed for greater convenience when working with an angle grinder. The carriage itself in the process, when metal is cut, slides along the guide.

Tools needed to make fixtures

For the manufacture of fixtures for grinders for cutting sheet metal, special nozzles are required. You can make them yourself. You will need the following tools:

• metal corner;
• electric drill with drills;
• duralumin steel plate;
• discs with a diameter of 125 mm .;
• self-tapping screws;
• wood bars.

General procedure for the manufacture of fixtures

To begin with, metal is taken, and a plate is cut out of it. Then an angle is made from the resulting plate. To do this, first a triangular cut is made, and then the workpiece is bent at an angle of 90 0.

AT metal plate 6 holes are made with notches. The holes are necessary for screwing screws into them, with which you can install the corners and the handle. The recesses in the holes are necessary for the heads of the screws. Optimal size fastener elements - 3 * 35 mm.

Then metal corners are installed. What matters is the angle at which the first corner is bent. It should be bent at an angle of 60 0. Otherwise, the structure cannot be fixed. When the corners are installed, tools are fixed on them.

In order for the parts of the structure and the tool itself to be connected, bolts with nuts are used on one side, and a handle on the other. Bolts with nuts are needed to prevent the screw from unscrewing the structure itself when cutting metal.

The need for a bed

Any grinder needs a frame. Beds are called devices that facilitate the work of the master and allow him to cut materials without any extra effort.

The manufacture of the bed is as follows:

• making a wooden box;
• removal of the cover of the angle grinder;
• installing a disc on the instrument;
• fixing the disk to the side wall of the device itself;
• setting a mark at the gap.

Other options for accessories for grinders

For the purpose of convenience, angle grinders (angle grinders) are provided with a vice or a workbench. These devices allow you to fix the tool itself motionlessly.

By installing a separate disk, the angle grinder can be converted into grinder fixed with fastening.

A convenient way is to install a sawmill from a grinder. The result is a sawing machine designed for seasonal work, which is quickly dismantled if necessary.

You can make a miter box from a grinder. To do this, you need to make a rotary tabletop under the angle grinder. Then, the tabletop is fixed at the desired angle, the disc is installed and any material is cut. With this tool, you can cut materials from wood, metal, stone.

If the shaft of the grinder is brought out into the hole of the workbench and put on it a cartridge for milling heads, then you get a stationary grinder with a milling cutter.

When fixing the stop, in which there are slots, across the disk itself, it becomes possible to process metal parts holding the item in hand.

The grinder can also be used as a wall chaser. This will require a nozzle with a solid base. With such a device, you can cut the walls. In this case, the device will move along the wall more smoothly, and during operation it will not require too much physical effort. It is recommended to equip the wall chaser with a closed cover with a hole designed to connect it to the chip vacuum cleaner.

Making a protractor for a grinder

A protractor is a necessary accessory for an angle grinder. It is useful for cutting metal. This device allows you to accurately calculate the cutting angle. You can do it yourself. The protractor consists of the following parts:

• loops;
• corner;
• bolt.

The work of the protractor goes through the following stages:

• installation of the guide corner on the tile;
• tight pressing of the workpiece itself to its shelves;
• cutting metal with slight pressure on the cutting elements of the disk.

Before starting the manufacture of any device for the grinder, it is recommended to draw up detailed drawings details and the installation process itself.

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