{"id":1658,"date":"2017-01-16T16:04:58","date_gmt":"2017-01-16T13:04:58","guid":{"rendered":"https:\/\/energosteel.com\/en\/?p=1658"},"modified":"2026-01-02T16:01:40","modified_gmt":"2026-01-02T13:01:40","slug":"correct-preparation-the-samples-of-grinding-balls-for-measuring-hardness","status":"publish","type":"post","link":"https:\/\/energosteel.com\/uk\/correct-preparation-the-samples-of-grinding-balls-for-measuring-hardness\/","title":{"rendered":"Correct preparation the samples of grinding balls for measuring hardness"},"content":{"rendered":"<p style=\"text-indent: 20px;\" align=\"justify\">According to the requirements of GOST 9013-59 <a href=\"https:\/\/energosteel.com\/library\/the-roughness-of-the-sample-surface-for-measuring-the-product-hardness-ra\/\" target=\"_blank\" rel=\"noopener\">the roughness of the sample surface (or surface area) for measure hardness of the product Ra<\/a> should not exceed 2,5 mm, unless otherwise specified in the standard technical documentation for metal. The sample should be prepared in such a way that its properties have not changed as a result of mechanical or other treatment.<\/p>\n<div id=\"attachment_10322\" style=\"width: 1034px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10322\" class=\"wp-image-10322 size-full\" src=\"https:\/\/energosteel.com\/wp-content\/uploads\/2017\/01\/20170116-1.jpg\" alt=\"Correct preparation the samples of grinding balls for measuring hardness\" width=\"1024\" height=\"1291\" srcset=\"https:\/\/energosteel.com\/wp-content\/uploads\/2017\/01\/20170116-1.jpg 1024w, https:\/\/energosteel.com\/wp-content\/uploads\/2017\/01\/20170116-1-238x300.jpg 238w, https:\/\/energosteel.com\/wp-content\/uploads\/2017\/01\/20170116-1-768x968.jpg 768w, https:\/\/energosteel.com\/wp-content\/uploads\/2017\/01\/20170116-1-812x1024.jpg 812w, https:\/\/energosteel.com\/wp-content\/uploads\/2017\/01\/20170116-1-59x75.jpg 59w, https:\/\/energosteel.com\/wp-content\/uploads\/2017\/01\/20170116-1-480x605.jpg 480w\" sizes=\"auto, (max-width:767px) 480px, (max-width:1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-10322\" class=\"wp-caption-text\">Correct preparation the samples of grinding balls for measuring hardness<\/p><\/div>\n<p style=\"text-indent: 20px;\" align=\"justify\">Grinding on the <a href=\"https:\/\/energosteel.com\/library\/surface-grinding-machine-surface-grinder\/\" target=\"_blank\" rel=\"noopener\">surface grinder<\/a> is the best way of preparation the grinding ball surface for hardness measure.<\/p>\n<p style=\"text-indent: 20px;\" align=\"justify\">Grinding machine designed for the effective conduct of grinding the metal details by special abrasive tool (<a href=\"https:\/\/energosteel.com\/library\/the-grinding-wheel\/\" target=\"_blank\" rel=\"noopener\">grinding wheels<\/a>). Metal details fixed on a table of surface grinder. For grinding balls done special matrix, it placed from 2 to 5 pieces, depending on the diameter of the balls. The grinding balls grinded simultaneously.<\/p>\n<p style=\"text-indent: 20px;\" align=\"justify\">A working cutting movement consists as follows &#8211; the fixed grinding balls on a table in a matrix moved relative to the cutting tool and thus occurs machining surface abrasive balls.<\/p>\n<p style=\"text-indent: 20px;\" align=\"justify\"><a href=\"https:\/\/energosteel.com\/library\/surface-grinding-of-grinding-balls\/\" target=\"_blank\" rel=\"noopener\">Surface grinding<\/a> includes the following working movements:<\/p>\n<ul>\n<li>cutting tool rotation,<\/li>\n<li>longitudinal and transverse feed ball,<\/li>\n<li>ball move toward cutting grinding wheel.<\/li>\n<\/ul>\n<p style=\"text-indent: 20px;\" align=\"justify\">In the grinding, place of contact the ball with grinding wheel fed coolant, because it helps prevent overheating and distortion of the surface hardness measurement results.<\/p>\n<p style=\"text-indent: 20px;\" align=\"justify\">Based on many years experience, concluded that the grinding wheels 25A PP 250h40h76 25SM is most suitable.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>According to the requirements of GOST 9013-59 the roughness of the sample surface (or surface area) for measure hardness of the product Ra should not exceed<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":4,"featured_media":10327,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"link","meta":{"footnotes":""},"categories":[73],"tags":[],"class_list":["post-1658","post","type-post","status-publish","format-link","has-post-thumbnail","hentry","category-en-fresh","post_format-post-format-link"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Correct preparation the samples of grinding balls for measuring hardness<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/energosteel.com\/correct-preparation-the-samples-of-grinding-balls-for-measuring-hardness\/\" \/>\n<meta property=\"og:locale\" content=\"uk_UA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CORRECT PREPARATION THE SAMPLES OF GRINDING BALLS FOR MEASURING HARDNESS\" \/>\n<meta property=\"og:description\" content=\"According to the requirements of GOST 9013-59 the roughness of the sample surface (or surface area) for measure hardness of the product Ra should ... 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