The difference and connection of Angle grinder, marble machine and electric circular saw

The original design of the different Angle Grinder is a kind of grinding tool for cutting and grinding FRP wood. The electric circular saw is mainly to cut soft materials such as wood, marble machine is to saw stone tiles and other hard and brittle materials, the use of the marble machine environment is poor, sawing also needs to add water, so from the structure and waterproof better and more tight.

Machine speed different electric circular saw, when cutting wood, using high carbon steel, alloy steel and other woodworking saw blades, and cutting wood soft material feed amount is large, the need for greater torque, so the electric circular saw design speed of about 5000 RPM, in order to obtain greater torque;
Marble machine, when cutting stone, diamond saw blade must be used, and the cutting amount of these hard materials is small, the only way to improve the cutting speed is to increase the speed of the saw blade, so the speed of the marble machine is more than 10,000 RPM;
There are many Angle grinding models. Compared with electric circular saw and marble machine, small Angle grinding machine has smaller feed amount and needs higher speed to improve cutting and grinding speed. On the contrary, the larger Angle mill speed is about 5000 revolutions per minute. The general speed of the small Angle mill is more than 9500; Lithium battery is above 8500.

The cutting depth of different electric circular saws is much higher than that of marble machines. The maximum cutting depth of the marble machine is generally 30 to 40 mm; Common models of Angle grinding machines are divided into 100 mm (4 inches), 125 mm (5 inches), 150 mm (6 inches), 180 mm (7 inches) and 230 mm (9 inches) according to specifications, and the small-size Angle grinding machines used in Europe and the United States are 115 mm. To highlight the possible consequences of mixing, the following sections are particularly important
1, such as cutting stone materials with a circular saw:
(1) Electric circular saw cutting stone such hard materials, it is easy to overload the machine;
(2) In terms of work efficiency, the speed of the electric circular saw is low, so the efficiency of cutting stone is low;
(3) From the perspective of safety, the section with too long a diameter is easy to break, injuring the operator;
2, such as using marble machine to cut wood materials:
(1) Because the speed of the marble machine is too high, it is easy to cut the surface of the wood material and burn it;
(2) The high speed friction between the saw blade of the marble machine and the wood material is easy to generate heat, and improper operation is easy to fire;
(3) The cutting depth of the marble machine is much lower than that of the electric circular saw, and the cutting efficiency of thick wood is also lower than that of the electric circular saw;
(4) Use the marble machine to cut wood, when pulling back, the wood chips spray to the front, but the machine may float up, it is dangerous; When pushing forward, the sawdust is sprayed to the operator's face, and the dust is large;
(5) The electric circular saw has a dust cover, even if it is placed on one side when the saw blade is rotating, the saw blade will not hurt any object; The marble machine does not, so the operation is very dangerous;

3, the use of Angle grinder specifications: Angle grinder is a handheld electric tool, the full name is called Angle grinding machine, also known as Angle grinder or disc grinder, as the name suggests its use is used to polish, later people developed for it drilling, cutting, sawing is not its design intention, so in the use of the process is easy to cause accidents.
The Angle grinder mainly has the characteristics of small size and high speed, which also makes it have more efficient working ability; But at the same time, it is also these two characteristics, so that it has a high risk, resulting in countless safety accidents, people also love and hate it.
During the operation of the Angle grinder, there will be a lot of tiny debris flying out at an alarming speed, and if there is not enough protection, there will be a risk of serious injury.
You should also make sure that you are not wearing any loose clothes, as well as long hair and jewelry, so as to avoid being curled by the Angle grinder when working.
It is also important to clean the working environment to ensure that there is no combustible material that could be ignited by flying sparks, and to provide adequate ventilation to the workplace to allow the resulting dust to float out of the room, thus reducing the damage to the operator's respiratory system.
Operators should be actively equipped with tough gloves (knitted gloves are prohibited), protective boots, goggles, and dust masks. Then inspect the various parts of the Angle grinder, especially the saw/blade, which is also a crucial step, because a damaged saw/blade can cause personal injury. Fix or clamp the workpiece to be machined, and if the parts of the Angle grinder are loose, and fasten the saw/grinder to the Angle grinder with the flange.

Angle mill protective cover should not be removed at any time, always let the side with protective cover to the operator, if you must remove the protective cover to work, then find a professional alternative tool to use, do not risk using in order to save time.
We are under the impression that the Angle grinder can saw a variety of hard stone, concrete and steel, so it is certainly no problem to use it to saw wood.
The actual use of the situation is also like this, in the high speed of the Angle grinder, the wood can be easily sawn, but at the same time the danger is in it, the woodworking saw blade in the encounter of wood joints and nails and other hard things, the Angle grinder will instantly rebound, hands can not be controlled, light damage to the Angle grinder and saw blade, heavy will endanger personal safety.

At high speed, the grinding wheel is cut by many fine particles in contact with the workpiece, although the cutting is slow, the reaction force generated is very small; The sawtooth of the woodworking blade is large, and the reaction force is also large. If the reaction force generated by the hard object is encountered at a high speed, the hands can not be controlled at all, which is also the reason for many Angle grinding machine accidents. Therefore, as a hand-held power tool, the Angle grinder is changed to a woodworking saw blade for cutting wood is extremely unsafe. Finally, pay attention to the specification after using the Angle grinder. When the end of the work, to first cut off the power, and wait for the saw/grinding blade to stop rotating before placing the Angle grinder in a safe place. When leaving the workplace, check the surrounding environment to prevent sparks or hot iron filings from igniting nearby objects and causing a fire.

Saw blades The woodworking saw blades of different electric circular saws and the diamond saw blades of marble machines are also very different in the shape of the teeth. The small serrated saw blade is the electric circular saw blade, and the large serrated saw blade is the marble machine. There are many types of saw blades available for Angle grinders (note: The installation of saw blades is not recommended for Angle grinders due to their safety risks) :
1. Diamond wire saw blade: composed of diamond and steel wire, suitable for cutting concrete, stone, metal and other hard materials.
2. Vertical saw blade: using carbide material, can be used to cut wood, plastic and other soft materials. (Note: The woodworking saw blade cannot be used without a protective cover, and the design of the Angle grinder is inherently not conducive to the control of cutting, and is designed only for grinding. The Angle between its handle and the grinding wheel is not like that of specialized hand saws and panny-head machines, which can directly resist the direction of the reaction force with the hand. But the handle of the Angle grinder is on the side of the grinding wheel. So, once the rotating saw blade or grinding wheel is suddenly blocked, it becomes difficult to control when the force rebounds).
3. Diamond cutting sheet: composed of diamond and metal powder, suitable for cutting marble, granite, ceramics and other materials.
4. Tungsten steel saw blade: with high strength and wear resistance, suitable for cutting steel, stainless steel and other hard materials.
5. Mosaic saw blade: the diamond sand is embedded in the surface of the saw blade, suitable for efficient cutting stone, concrete and other hard materials.