Rules for better abrasive use

The grinding room is noisy and dirty. Not the most desirable place in the metal casting facility to work. But that shouldn抰 keep your grinding personnel from using all the resources available to them to do their job properly. There are six tips for using coated abrasives on either stationary or portable grinding machines that will maximise the life of your abrasives and make life easier for the employees tasked with using them. Provided by abrasives suppliers, the tips don't require equipment upgrades or large expenditures of capital, and a little common sense and cooperation among management and staff?(together with the proper safety equipment) can improve productivity and morale. Select the right product Getting the most out of your workers and the coated abrasive materials they are using, whether belts or discs, starts with putting the right materials in their hands. Nonferrous metal casting facilities use zirconia alumina or aluminium oxide abrasives for most roughing applications. It is a very basic, lower cost abrasive that is most appropriate for fine grit polishing. Ferrous metal casting facilities might opt to use a higher performance class of products that offer ceramic grain coat abrasives, which offers longer life and better performance on difficult-to-grind materials. Further, metal casting facilities should be sure to use closed coat abrasives, abrasives with closer grain spacing, for harder metals like steel and iron and open coat abrasives for softer metals, such as aluminium and brass. Closed coat abrasives are ideal for working on hard metals where clogging rarely occurs because swarf (metal debris) easily falls away from the abrasive. If a worker attempts to use open coat abrasives on hard metals, burning of both the casting and the abrasive may result. The reduced amount of grain on the abrasive face would mean the open coat abrasive is being over-worked. Open coat materials have only 50-70% grain coverage on the abrasive surface so that when grinding soft materials, the swarf has more room to fall back out of the face of the abrasive. Open coat abrasives also may be helpful if heat is an issue, because the grains are spaced out, the material cools more quickly. Grinding hard metal where heat is not a problem with open coat materials not only accelerates loss of product life, but also sacrifices surface finish (more room between the grains results in approximately one grit coarser than expected). Clogging of the abrasive in soft metal grinding will still occur if using an open coat, but the open coat will alleviate some of the clogging, allowing you less down time for product changes. Let the grinder do the work Applying too much pressure on equipment may induce or aggravate repetitive motion issues. Carpal tunnel syndrome occurs when the median nerve, which runs from the forearm into the hand, becomes pressed or squeezed at the wrist. Too much pressure also causes excessive wear on the equipment. Deciding how much pressure is too much can be difficult. If you can feel a difference in the load of the tool, hear a change in the way the tool operates or notice that the tool is slowing down a significant amount, you are using too much pressure. If you are not using a stationary grinder, the weight of the equipment should be enough to do the job. However, if you must remove a heavy weld or burr, you may have to apply additional pressure. If you cannot perform the required job with a limited amount of pressure, consider changing abrasives rather than wearing yourself out. The grit of the abrasive, as well as the presence of an adequate lubricant, can affect how well the abrasive does its job. A worker who is applying too much pressure may think he or she is accomplishing more work at a faster rate, but most likely the opposite is true. The equipment has a job to do. For best results, experts say operators need only proZapatillas y ropa deportiva para ni?o