Scraping
Scrapers and checking the accuracy of scraping.Scrapers and checking the accuracy of scraping. Scraping of the manual processing wykończającej. Is used where the design (large dimensions of space, hard-to-surface) can not be applied mechanical finishing (grinding). Properly done scraping provides high plasticity, flatness and surface smoothness. During the scraping tool called a scraper, a thin layer removed is one-hundredth of a millimeter piece of material. A distinction is made scrapers uniform, mixed, and deposited. Scrapers uniform made entirely of steel N13E; NWV4 and NC5. Scrapers are connected only with the blade made of tool steel or cemented carbide, brazed to the blade parts made of carbon steel. Scrapers are made blades made of these materials and are mounted in special oprawkach. Due to the different destinations scrapers planes - and to the flat surface kształtowych - triangular. Scrapers triangle may be complete and wyżłobione. The geometry of the blade scraper at work depends on the angle of the scraper relative material chosen. A characteristic feature is carried out at a negative angle of attack.