Which is better to choose a disc cut-off for metal?

When working with metal, a Bulgarian is often used. And its effectiveness directly depends on the circle that is used. So how to choose a disc cut-off for metal in order to get the optimum quality? As examples, the circles with the most popular "household" diameter of 125 mm will be compared.

Choose the thickness

It should be noted that if we talk about disks for cutting metal, the dimensions play an important role. So, too large diameter of the circle will not allow using it in the Bulgarian. But there is one more parameter that is responsible for the comfort of work, this is the thickness. The most simple and effective in terms of cutting are usually disks for 1 and 1.2 mm. And they enjoy the appropriate popularity. But why? The fact is that thin disks are more elastic than their "thick" brethren. Due to the possibility of a small bending, small mistakes of the operator and the beating of the shaft are leveled out. Also, if the disk is ruptured (which is quite difficult to achieve), the mass and kinetic energy of the flying fragments will be relatively small. In addition, because of the complexity of their production, the likelihood of encountering counterfeits from China is very small. Therefore, as the object, discs were cut for metal 125 mm with a thickness of 1 millimeter, both popular in everyday life and difficult for forgery.

Test results

But the decision to choose a specific model can only be made by comparing their effectiveness in practice. Therefore, I bring to your attention the results of experiments, where several popular representatives will be considered. As a test task, cutting of steel rods in the amount of 50 pieces with a diameter of 10 millimeters was performed. For uniformity of testing the PoggiPosqualino was used. Acceleration to 150 m / s (at the declared rate of 80 meters) was also carried out to check the resistance to rupture on the device of the same company.

Hitachi PowerTools

It is produced by the Luga Abrasive Plant, but it is considered a partner product of Japan. They are marked without violations of the rules, indicating the purpose of the disk and its compliance with GOST. According to the test results, it was found that its diameter decreased by 8 millimeters, and the efficiency factor was 5.75. Also this disk has successfully passed the speed test. On the final result, we can say that the effectiveness of this circle is the highest among the options considered in the article, and on the quality / price ratio it takes an honorable second place. Also, it was not necessary to hear that this disc is detachable for metal falsely, so for certainty it is possible to purchase this unit of production.

Luga Abrasiv Extra

Also the products of the Luga Abrasive Plant. And it is one of the most recognizable brands, even on a global scale. On the efficiency of cutting, this representative is inferior to the previous one, but due to the low price, he can be awarded the first place in the overall standings. They also passed the speed test. But it should be noted that many notice when using rapid erasure and various side effects. But this is true not for all products, while official products pass all testing. Also noted is the speed of work and, accordingly, the wear of the wheel. Therefore, there are suggestions that these disks, despite their cheapness, China still learned to forge.

KronenflexA 60 Extra

Often this model is called the favorite of the price / quality ratio. But, according to some information, this does not correspond to reality. As a result of testing in diameter, the disk lost 13 millimeters. The final efficiency factor is 2.35. At speeds greater than 120 m / s, this model is not recommended.

"Interskol"

Is the product of the Chinese company of the same name. Based on the results of testing, the final diameter of the disc decreased by 16 millimeters. It should be noted that there is no marking of safety and compliance with GOST, the necessary designations and the date of manufacture. True, there is an old Soviet marking, which, nevertheless, does not correspond to reality. Also the number of revolutions per minute is 50 units less than required by the standards. Despite a number of suspicious moments, the disk has successfully passed the test to increase the speed. But the overall efficiency factor was slightly more than two. Despite the lack of height in the characteristic, we can say that the wear is low, and the cut is even.

ZUBR "Expert"

After testing, the diameter of the disc decreased by 17 millimeters, and the efficiency factor of the cut was 1.81. During the verification of its properties, it turned out that the circle is relatively badly cut into metal. It is also possible to observe an excess of thickness of 1.5 times the indicated size. Also no conformity to GOST and the manufacturer is indicated. But the test for speed, despite a number of complaints, this disc cut-off for metal was very successful.

Rhodius ALPHA line

After use, the diameter of the disc decreased by 19 millimeters. Initially, this German product makes a positive impression: there is no censure on the marking, the specimen itself feels like a high-quality product. But, as practice has shown, it has considerable wear. Compliance with the GOST and a successful speed test allows you to give positive feedback, but the high price still leads to a fairly low overall utility ratio of 1.61. Therefore, despite the quality cut, the use of this disc is rather inefficient.

Conclusion

On the Russian market there is still quite a lot of products, although mostly of Chinese origin (it is often labeled as goods of European origin), which showed not very high quality. One of the circles - Orientcraft Professional could even wear out after the 41st steel rod. But in the end, which is better to choose a disc cut-off for metal, focusing on price / quality, choose all the same to you. And the task of this article is to provide information, on the basis of which conclusions will be drawn as to which unit of products it is still necessary to make your choice.