What are the Velcro grinding wheels made of and used for? In most cases, the finishing decorative surface treatment includes a grinding stage. These works can be carried out with the help of special equipment or manually, using various abrasive materials. One of the most functional and convenient types is self-locking grinding wheels.The element of fastening to the disk is a well-known lock-fastener in the form of "Velcro" (in Europe it is customary to call it Velcro - an abbreviation of the two French words "velvet" and "hook"). Velcro grinding wheels are a common name for both G-Tool and Cibo models and many others. This method of fixation allows you to quickly remove the spent circle in the process of work and put a new one, for example, with a smaller grain.The scope of application of such circles is great - processing of metals, wood, hard polymers, glass, composite materials. They are used for grinding putty, primed, painted and varnished surfaces, both at intermediate stages of processing and before applying the upper decorative and protective layer.Velcro circles are mounted on a special support disc (on it is located the opposite part of the Velcro lock), which can be attached to various types of grinding machines, as well as used manually. The tooling can be used for dry, wet grinding. For dry types of work, circles with technological holes are produced, which are designed to remove waste products during grinding and reduce the temperature in the working area.There are four types of materials for the production of abrasive:- ceramics (CR);- aluminum zirconate (ZC);- aluminum oxide (AO);- silicon carbide (SiC).The first two types use a closed filling. Silicon carbide (SiC) and aluminum oxide (AO) - open and semi-closed filling. Depending on the size and hardness of the grain, the type of bundle and additional coating, abrasive wheels are used to perform different purity processing of different hardness materials. Usually "white" (light) grinding wheels have a special coating (calcium salts), which prevents the "salting" of the abrasive surface (sticking of particles of the processed material) - they serve for finishing, including varnished, painted and putty surfaces. Red circles are used for "rough" processing of solid wood, chipboard (fiberboard) and metals. Blue circles are used mainly for metalworking. Black - for stone, solid wood, glass.The most common Velcro circles are based on paper (PS marking), which reduces their cost without compromising performance. The diameter of the circles is 115-200 mm. There are circles made of non-woven materials (scotch-brights) with a similar type of fastening, which have their own special support disk. They are used for high-performance pretreatment (NDS marking) and surface refinement (SV marking). Minimum Deposit casinos are opening up a world of gaming to players who love online casino but don’t like high-stakes play. For as little as 1 you can increase your bankroll by 2000% and be in with a chance for extra spins and future offers. https://www.canada-casinos.net/1minimum-deposit-casino Of course, some casinos will allow you to deposit small amounts but this won’t always be sufficient to trigger a bonus. There are also some high-limit games that you might not be able to play without depositing a certain amount.
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