“Eternal” cutting discs, what is their advantage over “one-time” ones?

What are the advantages of permanent cutting discs compared to disposable ones?

Graff Black Professional “endless” or “eternal” cutting discs consist of a solid steel circle with a central mounting hole and diamond coating along the periphery, obtained using high-temperature plasma soldering technology.

To be specific, let’s consider the Graff Black Professional endless cutting disc with an outer diameter of 125 mm, a wheel body thickness of 1.2 mm, a height and thickness of diamond coating of 3 mm and 1.5 mm, respectively, and compare it with one-time cutting discs of the same size.

Endless cutting discs are used to cut round and periodic reinforcement, round and profiled pipes, rolled metal (angles, channels, I-beams, etc.), sheet metal from carbon and stainless steel.

Endless cutting discs are used in factories of reinforced concrete structures, in monolithic construction, repair work, emergency recovery operations, etc., when the quality of the cut is not so important as the fact of its presence.

Will need

Materials and tools:

Graff Black Professional diamond cutting disc;
“classic” cutting discs Cubitron II-3M and Luga-Abraziv;
Bulgarian;
steel corner 50×50 mm;
profile square pipe 20×20 mm, etc.

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The process of comparative testing of cutting discs according to the main criteria

We will test cutting discs based on cutting speed, safety, efficiency for various types of work, width of the cut compared to the thickness of the disc, force applied to the tool when cutting and price.

A comparative analysis of cutting a 50×50 mm steel angle with an endless cutting disc with one-time cutting discs shows certain advantages and certain disadvantages of the first over the second.

Among the advantages of the “endless” cutting disc Graff Black Professional we note:

constant diameter throughout the entire service life;
carrying out more cuts (long resource);
protection of the disk from rupture due to the strength of the metal of its body, i.e. high safety in operation;
small number of sparks when cutting;
no unpleasant odor during operation, etc.

In comparison not only with one of the best disposable cutting discs of the Cubitron II-3M brand, but also with the most common and cheapest disc of this type, Luga-Abrasive, the endless cutting disc Graff Black Professional also shows disadvantages:

cutting is limited to 50 seconds, then needs to stop for cooling for at least 10 seconds;
large cutting width (we have 2.7 mm with a circle width of 1.5 mm);
some instability of the cutting process;
applying more force to the tool;
the formation of a large number of burrs, which will require additional processing, etc.

Among the advantages of the “eternal” Graff Black Professional disc compared to “one-time” cutting discs (with the possible exception of a Bosch brand disc with a thickness of 2-3 mm), we note the quality and performance of surface metal processing.

This is shown by roughing the surface of a 20x20 mm profile pipe, partially covered with concrete, while even a special roughing disc with stone abrasive quickly becomes dull.

So, the Graff Black Professional diamond blade, due to its long service life and constant diameter, can be used for cutting almost any metals and other materials when high demands are not placed on the quality of the cut.

It undoubtedly has an advantage over disposable cutting discs in the operation of surface stripping of metals.

With not very intensive use, an “endless” cutting disc can be called “eternal”. It replaces more than 60 high quality disposable cutting discs. We will indicate the prices of disks measuring 125 × 1.5 mm, brand Luga-Abraziv, Cubitron II-3M and Graff Black Professional, respectively 25-29 rubles, about 60 rubles and from 1000 rubles. The choice, taking into account the above, is yours.

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