Diamond cutting wheels for metal

Metal cutting disc MESSER type V/M, F/V, F/M, F/MT is designed for cutting metals like aluminum, copper, stainless steel, steel, cast iron, galvanized and also ceramic granite, natural stone, concrete, wood, plastic and many more.etc.

Innovative vacuum sintering technology, used in the production of MESSER diamond tools allowed to increase the service life by more than 80 times compared to abrasive tools! Maximum performance, durability and safety MESSER diamond blades are the best criteria for professionals.

MESSER diamond discs V/M, vacuum, universal are designed for cutting: metals. steel, copper, aluminum, stainless steel; wood, glass, plastic, concrete, natural stone, porcelain and many more.etc. Compared to abrasive blades, they last between 1/70 and 1/90, i.e. 1 Messer diamond blade replaces 80 abrasive blades!

Scope of application

To make the surface perfectly smooth the disc should be chosen properly, it will save you money and reduce labor costs.

The disc is a metal circle with a small width and diamond cutting inserts on its edges. They are made of industrial ground diamonds, pressed into the binding substance:

The plates are attached to the disc by laser welding or silver soldering. To make the cutting tool last longer, it is connected to the iron base by powder brazing. When the cutting edge of the disc is sharpened, it can be used as intended.

Diamond grinding wheels

Thanks to the grinding discs, concrete is treated to level the floor before a decorative coating is applied. Working tool is an angle grinder or grinder. The feature of such tools will be that the diamond cutting layer is on a tapered ring surface, protruding on the edge (cup).

diamond, discs, metal

A grinding wheel for mechanical processing of floors is equipped with several grinding cups, and between them there are grooves for dust extraction.

The second type of tool for concrete constructions is grinding diamond discs. They are used to grind the concrete as needed to level the floor.

Cutting discs

This category of diamond wheels is divided into a number of types.

Segmented dry-cutting discs are used in conjunction with hand tools:

The outline at the base of the segment wheel has several sectors with circular through grooves between them. The discs are warm when cutting, while the plates are under tremendous strain. Slots are required to relieve tension in the cutters, remove waste, compensate for linear expansion, and dissipate heat. To better distribute the impact loads, use a radius bore at the end of the technological slot.

A separate kind of segmented discs are diamond tools for fresh concrete. The sector has a special composition with which concrete can be cut within 2 days after hardening. The diamond layer is usually sprayed directly onto the body without any bonding alloy.

The 2nd type of cutting disc is the solid disc. There are no parts on them, the stress is distributed by circular holes. They are needed if concrete is cut with water cooling. Wet processing is carried out on stationary equipment that can supply coolant.

Subsequent type of cutting-off wheels are specifically for reinforced concrete. Their design is segmentary, but there are more diamonds in the teeth. Remember that it is difficult to cut reinforced concrete without assistance, as the angle grinder heats up quickly and the dust gets inside the machine, respectively, you need a special protective motor. Hand tools can cut reinforced concrete in one pass to a maximum depth of 10 cm, then the angle grinder will turn off.

Turbose segment cutting-off wheels are solid, they are cooled by their own wave-shaped surface. They are expensive, but have extended functionality and long service life. With their help, they can cut not only concrete but also reinforced concrete, but only if the diameter of reinforcement does not exceed 10 mm.

The main advantages and disadvantages

Diamond cutting discs are universal tools. They are suitable for cutting not only metal, but also other hard materials: brick, reinforced concrete, foam concrete, and others. The advantages of this tool include:

Diamond disc does not exert pressure on structures adjacent to the cutting surface, does not change the structure of the material in the process. The time required to complete the job is considerably less than with other tools. Diamond cutting discs work in the absence of sparks and, as a consequence, there is no smell of burning.

The disadvantages of this equipment are its high cost, but the service life of diamond cutting tool is much higher (up to 70 times) than that of abrasive discs, which do the same job. Reduced downtime due to less frequent tool changes. With active cooling it is possible to increase the rotation speed and performance. The tool retains its geometric characteristics throughout its service life.

Main characteristics and markings

These characteristics are coded as alphanumeric symbols on every diamond disc. Marking rules are not fixed. Every manufacturer makes it out in his own way, but the main characteristics are always present.

  • Type of disc. In theory, there should be a numerical designation:
  • straight profile;
  • cutting off;
  • with recessed center.
  • D. outside diameter;
  • T. height;
  • H. bore diameter.
  • ceramic binder. V (K is the old designation);
  • Bakelite bond. B (B is the old designation);
  • vulcanite bond. R (B is the old designation).

What are the markings on the diamond cutting discs?? As an example, we look at the designations used on the tools of the Russian manufacturer ISMA flex (see the picture). figure).

2302.522.2 14A63H39 BU 80 m/s 2nd class according to GOST 21963-82, where:

  • 2302.522.2. (DxTxH). dimensions: diameter, thickness and bore diameter.
  • 14A. grade of grinding material. in this case electrocorundum normal.
  • 63H. here medium grit.
  • 39. sound index.
  • B. bakelite bond.
  • U. hardener. fiberglass reinforcement.
  • 80 m/s. operating speed.
  • 2 unbalance class.
  • GOST 21963-82. normative document.

disk speed when cutting metal

Diamond tools are used on angle grinders, which usually have a rotational speed of the working shaft up to 12000 rpm./min. The maximum rate, which the discs can withstand without breaking, is 13900 rpm./min.

  • Bosch. Germany’s leading manufacturer of power tools and related materials.
  • FIT. Canadian company produces tools for professional and domestic use.
  • Dremel. An American company that produces high quality power tools.
  • Husqvarna. Swiss company known for its high performance and durability level.
  • MESSER. Korean manufacturer with a wide range of diamond cutting wheels.
  • Zubr. Russian company that produces power tools and cutting equipment.
  • Hitachi Power Tools, Luga Abrasiv Extra. Has an excellent price-performance ratio.

Diamond cutting discs are effective tools with high output and provide comfortable working conditions. Have experience working with them? Be sure to share them in the Комментарии и мнения владельцев of this article.

Varieties and rules of choice of diamond cutting discs for angle grinders

Diamond cutting discs or as they are also called, diamond wheels have several advantages over conventional abrasive analogs. They have significantly tremendous features in terms of resource, cutting accuracy and performance. Next we will see how to choose a diamond blade for the grinder, the types of discs there and what are their advantages.

Wheels with diamond edges for waterless cutting were first made in the design office of the Japanese company Sankyo Diamond Tools, a division of Hitachi.

A lot of technology was applied the first time, as the mugs were not reliable enough and promptly failed.

For example, the diamond and the cutting part were attached to the steel base by high-temperature brazing. In the process, when there was a lot of friction force, the alloy heated up, the solder melted and the working part simply fell off. With water cooling, such circles worked more or less acceptably, but with dry friction their service life was small.

The fact that the diamond is cut, and wipes it into dust, the high friction forces are accompanied by a sharp heat, the heat does not have time to be removed through the body of the circle, not considering that

, despite the presence of special notches, y deforms when heated.

The shape configurations are insignificant and do not threaten to break, but the strength of the connection is badly affected.

Sankyo Diamond engineers also invented other solutions for sintering the working part and the base under low pressure. Such a connection is strong and can withstand much higher temperatures.

This way it was possible to make segmented and solid discs, resistant to heat and deformation. A development that is still in use.

2nd solution. Laser welding at molecular level. Only segmented discs are manufactured using this process. In terms of durability and reliability both types of disks are actually similar, although almost all masters think that the laser welded disks are better.

The difference in the location of diamonds in disks

Artificial diamonds are locked into the working bezel in a specific order. There are circles with uniform dispersion, when at least one of the selected units of length or sector is a uniform number of crystals.

But there are also circles in which the diamonds are placed with a certain period (the so-called sandwich). They are more productive, provide less force into the tool, cool down more effectively, and disperse force evenly.

Choice of cutting type

Usually cutting is done with water, in which case the procedure Dustless.

In addition, water can increase the efficiency of work, also increase the resource of the tool. Because the process must be continuous, the work speed will increase. (See also the article Gasconcrete styling: peculiarities.)

But water is not always near the work area. Dry cutting should be done in this case. The process of dry cutting should be intermittent, in other words, it consists of a couple of cuts.

Cutting concrete on the intended mowing strip

Diamond disc manufacturers

Among the manufacturers, the following companies are deservedly popular:

  • Bosch. German leader in power tools and related materials.
  • FIT. Canadian company produces tools for professional and domestic use.
  • Dremel. American company that makes high quality power tools.
  • Husqvarna. The Swiss company, which is known for its high performance and level of durability.
  • MESSER. Korean manufacturer, which produces a wide range of accessories for bolt cutters.
  • Zubr. Russian company producing power tools and cutting equipment.
  • Hitachi Power Tools, Luga Abrasiv Extra. Has an excellent price-performance ratio.

Diamond cutting wheels are efficient, high performance tools that provide a comfortable working environment. Have experience working with them? Be sure to share it in the Комментарии и мнения владельцев of this article.

Segmented disc.

This option is ideal for dry cutting (without forced water cooling), because the cooling of the disc is due to the specific design. They are good for cutting concrete, stone (including granite), or brick.

It is important to remember that the continuous operation of a segmented disc should not exceed 1.5 minutes, otherwise the wear rate will increase sharply.

Note: The smaller the segment size, the slower the drive warms up. Also, fewer segments reduces the degree of vibration.

Solid disc.

This type is excellent for working with ceramic or marble. The solid shape of the disc ensures a clean cut and permits work on decorative materials. On the one hand, a solid disc requires forced cooling (very common practice in “puddle cutting”), but on the other hand, if properly cooled, there are no limitations on continuous work time.

For work on extremely hard materials, we recommend the use of special discs with a diagonal groove (slotting). They reduce side-to-side friction, reducing the intensity of disc heat and aiding dust extraction.

Combination blade.

Can be used to cut any non-metallic material, but ceramic tiles should be cut with water and concrete can also be cut without cooling. The disadvantage of this type of disks is the low efficiency compared to the above options.

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