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It is one of the truly standard applications and it turns up every day in every metalworking company: for welded metal objects, fillet welds need grinding and blending, and radiuses have to be created.
The fillet weld is also the structural weld that is most frequently welded. Specialised tools are required to ensure work is precise as possible – whether the weld seam needs to be removed or undesirable tarnish colours eliminated. As a first step, a specially designed grinding disc can provide coarse stock removal. If the disc is used on a specialised fillet weld grinding machine, this makes working in the narrow interstitial space much easier. A flap disc can ensure that the final surface finish is even cleaner. When working on welded pipe flanges, however, one should take care to ensure that the weld seam is not weakened too much by grinding work.
Flap discs with flaps that project further are the tool of choice for this kind of work. These discs can be used to create small or large radiuses from the welding seams in hard-to-reach areas to obtain a sound, high-quality finish. With the RHODIUS LSK FK, the combination of a flap projection of 10 mm and a sturdy fabric layer not only guarantees an above-average lifetime but also ensures that the projecting parts are flexible enough to adapt perfectly to every facet of the fillet weld. As the carrier material is released, it then ensures an elegant visual finish. If the flaps are also coated with a high-performance abrasive grain, this ensures very high stock removal performance. The abrasive flap discs are iron- and sulphur-free, and work equally well on steel and stainless steel. They are also suitable for grinding aluminium and other non-ferrous metals if you remember one simple trick: the rapid clogging of the disc in these scenarios can be avoided by using grinding grease or silicone-free cutting spray. This ensures clean, high-quality results are also achievable on aluminium
The RHODIUS FS1 FUSION combines the long lifetime of a rough grinding disc with the fine surface finish obtained by a flap disc. The disc rim can be profiled, or, put another way: it can first be cylindrically ground before being used. The disc then works especially effectively and cleanly on fillet welds. The workpiece can be zinc-plated or painted immediately after this step. The FUSION is available in various grit sizes up to a grit size of 80. During use, the FUSION makes an impression with superior stock removal and a simultaneously fine surface finish. An FS1 FUSION disc offers a further advantage: this highly specialised grinding disc works perfectly on aluminium or other non-ferrous metals.