{"id":4885,"date":"2023-02-04T13:15:37","date_gmt":"2023-02-04T13:15:37","guid":{"rendered":"https:\/\/www.jstconsultancy.cz\/?p=4885"},"modified":"2026-08-01T07:54:14","modified_gmt":"2026-08-01T07:54:14","slug":"nadca-207-2022-the-r10-radius-wins","status":"publish","type":"post","link":"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/en\/nadca-207-2022-the-r10-radius-wins\/","title":{"rendered":"Nadca 207- 2022 &#8211; The R10 radius wins"},"content":{"rendered":"<p>Sometime around 2003, I started promoting the R10 radius as the optimal radius for die casting dies parts for high-speed gas quenching. I was based on the model I had made on the Deform program. The model represented the course of stress in a notch on a 600&#215;400 mm plate, during cooling from a temperature of 1050 C to room temperature. It turns out that even with an R10 radius, the maximum tensile stress drops by only 31% compared to the zero-radius version.<\/p>\n<p><a href=\"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4971\" src=\"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-300x169.png\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-300x169.png 300w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-1024x576.png 1024w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-768x432.png 768w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-1536x864.png 1536w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-260x146.png 260w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-50x28.png 50w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-133x75.png 133w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-1200x675.png 1200w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked-600x338.png 600w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r-watermarked.png 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-4973\" src=\"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-300x169.png\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-300x169.png 300w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-1024x576.png 1024w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-768x432.png 768w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-1536x864.png 1536w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-260x146.png 260w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-50x28.png 50w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-133x75.png 133w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-1200x675.png 1200w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked-600x338.png 600w, https:\/\/intelligent-kalam.80-240-27-133.plesk.page\/wp-content\/uploads\/2023\/02\/r2-watermarked.png 1920w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><iframe loading=\"lazy\" src=\"\/\/www.youtube.com\/embed\/df3t2kulbbs\" width=\"400\" height=\"224\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>I recently downloaded the new version of Nadca 207-2022 and I really enjoyed it. On page 19, in the chapter &#8220;Preparation for Heat Testament&#8221; the following is specified:<\/p>\n<p><strong>Radius recommendations:<\/strong><\/p>\n<p>Inside radii smaller than 0.250\u201d <strong>(5.0 mm)<\/strong> should be avoided in large tooling to reduce the risk of quench cracking.\u00a0 Although 0.120\u201d <strong>(3.0 mm)<\/strong> radii will work in some applications.<\/p>\n<p>There is still a risk of cracking when the geometry of the tool is complex. Larger steps and complex geometry will require larger radii, typically ranging in size from 0.250\u201d <strong>(5.0 mm)<\/strong> to 0.400\u201d <strong>(10 mm).<\/strong> Steps larger than 5.9\u201d (150 mm) may require a more generous radius, an example is a radius of 0.500\u201d <strong>(13 mm)<\/strong> or greater.\u00a0\u00a0 Also, all holes should have a minimum 0.120\u201d <strong>(3 mm)<\/strong> chamfer at the surface.<\/p>\n<p>For 20 years, I have trained our customers, manufacturers of die casting dies, or designers and technologists on this topic as part of training organized by the Association for Heat Treatment of Metals CZ and SK, and my statements always made the participants smile.<\/p>\n<p><strong>Twenty years later, even Nadca recognized that the laws of physics cannot be circumvented during high-speed cooling in gas.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>February 4, 2023<\/p>\n<p>Ji\u0159\u00ed Stanislav<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sometime around 2003, I started promoting the R10 radius as the optimal radius for die casting dies parts for high-speed gas quenching. I was based on<\/p>\n","protected":false},"author":12,"featured_media":4887,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"image","meta":{"_acf_changed":false,"footnotes":""},"categories":[322],"tags":[],"class_list":["post-4885","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-nadca-207-en","post_format-post-format-image"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nadca 207- 2022 - The R10 radius wins - JST Consultancy<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nadca 207- 2022 - The R10 radius wins - JST Consultancy\" \/>\n<meta property=\"og:description\" content=\"Sometime around 2003, I started promoting the R10 radius as the optimal radius for die casting dies parts for high-speed gas quenching. 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