The grinding equipment is used as aconsumables abrasives. Each abrasive material has its own characteristics, characteristics and operational properties, allowing it to cope with a certain range of tasks. In turn, the grinding belt forms one of the widest segments in the group of abrasive consumables. It is characterized by efficiency in the work process and convenience in physical handling.
Purpose of tapes
There is a whole class of grinders,which use grinding skins (tapes) as a working tool. The rotation of the electric motor with the shaft promotes the achievement of high revolutions, which makes it possible to process different surfaces - from softwood to solid rocks and even concrete. But more often the grinding machine with tapes is used in finishing soft-billets. Another thing is that the equipment itself can have different designs.
In addition to machine tools, there is a broad categoryhand grinders. These are small devices, which are also supplemented with band-shaped abrasives. They provide a low rotation speed, but due to the small area of the tooling, it is possible to carefully adjust the edges of small wooden products. Obviously, grinding belts for the grinder themselves are designed specifically for a certain type of equipment.
Varieties of tapes
As for compatibility with machines, it is possiblehighlight narrow bands and wide. Accordingly, they are suitable for a compatible landing socket. However, there are universal machines, in which the bearing mechanisms allow you to adjust the width of the abrasive grip. There is a different grinding belt and the type of material used in the basis. The most commonly used fabric and paper, although specialists for special purposes can use combined and polyester abrasives. From the point of view of working qualities, the most important is the rough coating, which makes the band abrasive. Typically, silicon carbide or electrocorundum is applied to the surface of the substrate. The first option is optimal in terms of reliability, wear resistance and mechanical impact, but adversely affects the structure of adjacent parts of the machine. Silicon can destroy the surface of the metal. As for electrocorundum, this material is good for its electromechanical protection, which is important in certain operating conditions, but as an abrasive as such it is by far not the best option.
Size specifications
When choosing a sandpaperTo be guided by two basic parameters - length and width. As for the length, it can be 400-600 mm on average. That is, in essence a circle is formed, which is fixed as a tooling on a hand grinder or machine. The width of the grinding bands varies from 30 to 140 mm on average. The most popular width format is 76 mm. Under it are guided and hand-held devices, and machine tools. In the marking to grinding skins, one can also find such a characteristic as infinite. This is a tape that just forms a vicious circle that rotates along with the functional rollers.
Characteristics by degrees of granularity
If the area of coverage depends on the size of the tape, thengranularity directly affects the efficiency of machining. Whether it's mopping or surface grinding, a large abrasive can remove more particles from the surface of the target product in a shorter period of time than a fine-grained analog. Grain is marked with numeric indices. For example, a grinding belt with a grain size of 40-60 will provide a rough cleaning. This option is suitable if you need to remove a layer of old paint, not caring about the state of the substrate. The pelts with a grain size of 80-100 are considered to be universal. They are used to smooth the surface by removing it from pronounced defects - bumps or pits.
Thin processing is performed on tapes withgranularity from 120 to 300. The higher the figure, the more delicate the finish will be. A value above 300 indicates that a grinder with such a tape can perform almost a jeweler's surface finish to within a micron. Such tapes are used on professional equipment for the manufacture of small parts.
Types of tape connections
It has already been said that a tape can formendless processing strip. But in order to make the segment infinite, it is necessary to unite it. Different methods are used to accomplish this task. For example, joining with an overlap allows you to get a strong seam, but in this system, a wave will inevitably form due to two superimposed layers. There are models of machines and grinders that are tolerant of this shortcoming, but they do not include machines designed for fine-tuning. It's not even in the machine, but in the surface of the skin itself, which can not provide the optimal cleaning. A grinding belt can be connected for machine tools and by a butt-end method. In this case, the quality of material processing will be much higher, but the strength of the blade in the machine tool - on the contrary, will decrease.
Conclusion
When choosing a grinding tool, it is necessary to proceedof the two main factors - the requirements of the machine and the parameters of stripping the material with a specific set of characteristics. Obviously, the choice of skins for a concrete surface and wood will be different. Just like the choice between tapes for a hand grinder and industrial machine. The only thing that the grinding belt of different types combines, regardless of purpose, is the characteristics of wear resistance, reliability and durability. A quality grinding cloth, even under harsh operating conditions, shows the proper effect of the treatment, removing the millimeters and microns that are put to it. However, it is hardly possible to check tape quality without practical use. Specialists recommend immediately after acquiring the grinder to contact his own manufacturer for testing the working equipment of this brand. At a minimum, the products of one brand will be compatible for the main operational parameters.
