Aerated concrete block cutting machine
The maximum precision and evenness of cutting aerated concrete blocks is ensured by professional machines. With their help, you can cut massive structures into small parts, giving them any shape and size. Due to its relatively small dimensions, the machine can be placed in a garage or garden.
The design of the machine resembles a frame with such components as:
- Auger for cleaning the hump.
- Electric drives.
- Cutting parts.
- Trigger mechanism.
- Winch.
- Cart.
The block is passed through a screw mechanism, which ensures the correct geometry of the sides. After that, a frame with cutting blades cutting the monolith is lowered onto the aerated concrete structure. The finished product is transferred to the warehouse.
The advantages of machines include:
- Improved performance metrics.
- Economical consumption of labor resources.
The disadvantages include high cost and small dimensions, which provide optimal conditions for cutting.
When choosing tools for processing aerated concrete products, it is necessary to take into account the specifics and scope of work. In this case, they will serve for a long time and efficiently.
Chain saw
The electric chain saw is versatile, so it can be found in every man's home workshop. The device consists of elements such as:
- Cutting element.
- Saw bar.
- Tensioning mechanism.
- Chain lubrication system.
- Blocking flap.
The inner part is structured as follows: a closed contour moves along a guide passing through two stars. The front sprocket is fixed to the end of the rail and is driven. There is another element at the back, attached to the drive shaft. It is connected to an electric motor and starts the movement of the chain. There is a protrusion on the housing near the rear sprocket.
For smooth operation of the saw, it is necessary to correctly adjust the tension by tightening the special screw on the body. The sawing process is provided by a circular motion of the blades attached to the contour.
pros
Experts believe that chain saws are the best solution for U-shaped blocks. This is due to the side cut. Other pluses include:
- Increased material processing speed. This is due to the increased performance of the engines.
- Comfortable weight balancing: With this saw, you can make quality cuts at an angle and overhead.
- The presence in the set of guide rails, the length of which varies from 30-40 cm.
The advantage of chain models is their relatively low cost.
Minuses
The key disadvantage of a chain saw is the rapid wear of the cutting blade, as it is designed for wood processing, but is not used for its intended purpose. To prevent this problem, it is better to buy a special chain with victorious solders.
It costs more than a simple chain, but lasts longer. In Moscow, you can find different models of such devices with different characteristics and properties.
If a large amount of work is required in difficult conditions, the sprocket teeth begin to grind, making them unusable. The process of replacing sprockets does not require a large investment, but it is a waste of valuable time, since it becomes necessary to contact the service center in search of the optimal part.
The electric motor is afraid of exposure to dust, which accumulates as the gas silicate blocks are used intensively. As a result, the saw becomes unusable and cannot be repaired.
1 What parameters to consider - cheat sheet for the buyer
The electric saw for aerated concrete has great power and performance, which allows it to be used to work with massive blocks. When choosing a tool, you should decide where the work will take place. If you are cutting on a construction site, we recommend purchasing a cordless saw. Such a tool is lightweight and mobile, it allows cutting the gas block in hard-to-reach places, however, its operating time is limited, it is necessary to recharge the battery.
Saw on aerated concrete
A universal and reliable option for working with aerated concrete is a reciprocating saw with solders from pobedit and hardened cutters. Resistance to increased loads is observed in electric saws with cutting elements made of cermet, which includes hard alloys of tungsten, cobalt, monocarbide.
When choosing a tool, pay attention to the following parameters:
1. Saw power. 400-500 W models are designed for simple tasks; for work with massive blocks, choose a tool with a power of more than 1 kW.
2. Adjustment of the cutting depth. An important feature if you are working with boards of different thicknesses. The fabric wears out evenly, which means that its service life increases
Pay attention to the cutting depth adjustment device. It can be key and keyless.
The second option speeds up the change in depth without the use of additional tools. The optimum length of the hacksaw stroke is from 28 to 32 mm.
3. Possibility of speed regulation. Allows you to select the optimal mode for work of varying degrees of complexity.
4. Pendulum movement of the canvas. Allows you to increase the cutting speed, reduce the applied physical effort. Give preference to models where the pendulum movement turns on as needed, and does not work constantly.
5. The presence of a soft start button. This button makes it possible to reduce the load on the power supply of the tool during start-up. This function will be especially useful when the tool is working with high power.
6. Blade travel stop. It allows you to press the saw close to the aerated concrete, increasing the accuracy and quality of the cut, to make the displacement along and across the axis at the required distance.
7. Tool weight. If you are planning several hours of continuous operation, this parameter should also be given great attention. Remember, the more the device's power and performance, the heavier it is. Therefore, look for a middle ground.
If the building is not supposed to have difficult corners and turns, get a hand-held hacksaw
When purchasing a saw for everyday use, consider the complexity of the construction. If it does not assume the presence of difficult corners and turns, get a hand-held hacksaw. It is advisable to purchase a reciprocating saw and an alligator when performing a large amount of work and cutting complex structures due to the high cost of tools.
2 Reciprocating Saws - Why Are They Preferred By Amateurs And Professionals?
Reciprocating saws are a universal option for working with aerated concrete. The power of this instrument ranges from 400 to 1600 watts. The higher the power, the faster and easier the cutting of the gas block is. The reciprocating power saw is an improved version of the hand-held hacksaw that operates from the mains. The cutting end of the tool is a sharp carbide blade that moves along a predetermined path, creating a precise cut. To make the saw cut even better, a line is preliminarily outlined with a pencil. Such a tool is suitable for medium volumes of work.
As an example, consider the BOSCH GSA 1300 PCE model. This is a mid-budget option for home and work on construction sites, and it is also universal. It is suitable for cutting aerated concrete, metal, wood, drywall, plastic and other materials. Why is this model convenient? For quick replacement of cutting blades, the patented BOSCH - SDS system is provided.It stands for Steck-Dreh-Sitzt, which in German means - insert-turn-sit (done). The power of the tool is 1300 W, it will be enough for fast work. To make your hands less tired, the design of the model provides an anti-vibration handle, balancing, rubberized gear housing for a comfortable grip. The presence of these structural elements should be guided by when choosing other models. Among the additional features that create convenience when working, we can distinguish the presence of a metal hook for hanging the tool in an inoperative state and LED lighting, which allows you to work in poor visibility.
Reciprocating saw
Accelerates the speed of work and the presence of pendulum movement of the blade
In the BOSCH GSA 1300 PCE model, it is continuous, but if you want to choose a tool with a separate button to enable this function, you should pay attention to the Makita JR 3070 CT or Hitachi CR 13 VA. The total weight of the BOSCH GSA 1300 PCE reciprocating electric saw is 4.1 kg, and average price - 13 500 rubles
3 Saw alligator - principle of operation and design features
Externally, an alligator for cutting aerated concrete resembles a chain saw, while the tire itself looks more like a hand hacksaw. In fact, this is an improved analogue of the reciprocating saw. What has changed in her? The main difference is the cutting element. In the grooves of the guide bar, two cutting blades are installed parallel to each other, which work on the principle of reciprocating motion, that is, they move simultaneously in two different directions at high speed, which allows you to get an accurate cut with minimal effort. There is no pendulum motion in such saws, the saw bar is motionless.
Block cutting with an electric saw
The main advantages of the alligator saw:
- straight cut line, even when the tool is overheated;
- more accurate cut, which is achieved due to the increased stiffness of the tire;
- no vibration due to the balanced movement of the two blades in different directions
- no reactive kickback of the tool, even if there is an obstacle in its path, unlike chain and circular saws;
- the thickness of the material to be cut is not limited;
- the ability to cut straight to the desired depth
- work in hard-to-reach and narrow places.
The main disadvantage of this tool is its high price. Consider two popular series, their characteristics and price segment.
4 BOSCH and DeWalt - compare models in terms of price and quality
Using the example of two models of well-known manufacturers of power tools, we will analyze in more detail the characteristics of alligator saws. Let's start with the well-known German company BOSCH and its model GFZ 16-35 AC. This tool has a smooth adjustment of the number of revolutions, which allows you to gradually increase its productivity with the complication of the tasks. The saw handle slides and pivots laterally if you want to cut close to the edge. The tool is equipped with the SDS system, which is the main advantage of Bosch over other manufacturers. It provides a convenient replacement of blades without the use of additional tools. This model is suitable for deep cuts with a 50 mm stroke and a 350 mm bar. Additional functions include a switch-on lock, an exhaust duct for collecting chips. Power BOSCH GFZ 16-35 AC - 1600 W, which allows it to be used for difficult work with aerated concrete. The performance of the model is reflected in its weight - 5.2 kg. The average cost of a BOSCH GFZ 16-35 AC alligator saw is 30,000 rubles.
The American brand DeWalt offers a series of powerful alligator saws. Let's take a closer look at the DWE 399. This is a 1700 W professional model suitable for heavy duty cutting of porous concrete, ceramic blocks and insulation materials. The operation of the equipment is increased due to the use of a dustproof gearbox and bearings.There is a blocking of accidental activation, easy replacement of blades, there is a built-in case for storing keys. The alligator handle is balanced and rubberized for easy grip and handling. Despite the high power, the blade travel is 40 mm with a bar length of 430 mm. The structure is heavier - 5.5 kg. The average market price of DeWalt DWE 399 is 26,000 rubles.
As you can see, the price of an alligator saw is almost 2.5 times more than a reciprocating saw. Therefore, we recommend purchasing such a tool only to professionals or craftsmen who have complex construction work ahead.