{"id":3351,"date":"2026-09-09T14:58:06","date_gmt":"2026-09-09T06:58:06","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=3351"},"modified":"2026-09-09T14:58:10","modified_gmt":"2026-09-09T06:58:10","slug":"what-are-the-benefits-of-an-environment-with-a-relative-humidity-of-40-60-rh-for-granite-precision-platforms","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/fr\/2026\/09\/09\/what-are-the-benefits-of-an-environment-with-a-relative-humidity-of-40-60-rh-for-granite-precision-platforms\/","title":{"rendered":"What are the benefits of an environment with a relative humidity of 40%\u201360% RH for granite precision platforms?"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>Benefits of 40%\u201360% RH Relative Humidity for Granite Precision Platforms<\/strong><\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">This range is the <strong>optimal humidity range<\/strong> for granite metrology platforms, balancing the stability of the stone itself, embedded metal parts, and matching measuring tools. The benefits are explained in 4 points:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. Stable stone dimensions and minimal flatness drift<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Granite (Jinan Green) contains trace micropores.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>&lt;40% RH: The environment is too dry, causing the original trace moisture inside the stone to slowly dissipate, leading to slight shrinkage;<\/li>\n\n\n\n<li>>60% RH: Water vapor continuously infiltrates the micropores, causing the stone to expand slightly due to water absorption;<\/li>\n\n\n\n<li><strong>40~60% RH<\/strong>: The stone reaches an equilibrium of moisture absorption and desorption, <strong>minimizing expansion and shrinkage<\/strong>. The reference flatness can remain stable over the long term, providing better measurement repeatability for high-precision 00 and 000 grade platforms, and reducing the frequency of periodic re-verification and calibration.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This prevents slow deformation caused by repeated wet-dry cycles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2. Prevents corrosion of metal parts and avoids local surface lifting<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For embedded steel sleeves, leveling support feet, T-slot metal inserts, as well as matching measuring tools and CMM accessories, at 40~60% RH:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Water vapor is insufficient to form a water film on metal surfaces, <strong>significantly reducing the probability of rusting<\/strong>;<\/li>\n\n\n\n<li>Prevents metal corrosion from expanding and lifting the stone, avoiding local flatness deformation;<\/li>\n\n\n\n<li>Eliminates the risk of rust seeping into stone micropores to form permanent rust stains, protecting the appearance and accuracy of the working surface.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3. Reduces condensation risk and protects the working surface<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When humidity &gt;60%, a slight drop in ambient temperature can easily cause condensation on the surface of the platform and metal parts. Accumulated water seeping into joints and threaded holes can precipitate white alkali over time, causing surface powdering.<br>At 40~60% RH, <strong>condensation is unlikely to occur<\/strong>, preventing long-term moisture retention on the platform and protecting the stone working surface.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">4. Improves measurement stability and reduces measurement errors<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">During high-precision inspections (CMM, dial indicator, height gauge measurements):<br>Stable humidity ensures not only the dimensional stability of the granite platform but also minimizes dimensional fluctuations of steel measuring tools and probes;<br>Meanwhile, static electricity risks are controlled (excessively low humidity easily generates static electricity, which attracts dust to the platform, scratching the working surface and affecting readings).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Humidity below 40% easily generates static electricity, causing dust to adhere to the platform and scratch the precision working surface.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"734\" src=\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222-1024x734.png\" alt=\"\" class=\"wp-image-3359\" srcset=\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222-1024x734.png 1024w, https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222-300x215.png 300w, https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222-768x550.png 768w, https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222-18x12.png 18w, https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222-800x573.png 800w, https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222.png 1119w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>","protected":false},"excerpt":{"rendered":"<p>Benefits of 40%\u201360% RH Relative Humidity for Granite Precision Platforms This range is the optimal humidity range for granite metrology platforms, balancing the stability of the stone itself, embedded metal parts, and matching measuring tools. The benefits are explained in 4 points: 1. Stable stone dimensions and minimal flatness drift Granite (Jinan Green) contains trace&#8230;<\/p>","protected":false},"author":1,"featured_media":3359,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[35],"tags":[],"class_list":["post-3351","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"taxonomy_info":{"category":[{"value":35,"label":"NEWS"}]},"featured_image_src_large":["https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/09\/22222-1024x734.png",1024,734,true],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/fr\/author\/jtlcnc\/"},"comment_info":0,"category_info":[{"term_id":35,"name":"NEWS","slug":"news","term_group":0,"term_taxonomy_id":35,"taxonomy":"category","description":"","parent":0,"count":361,"filter":"raw","cat_ID":35,"category_count":361,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/3351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/comments?post=3351"}],"version-history":[{"count":2,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/3351\/revisions"}],"predecessor-version":[{"id":3362,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/3351\/revisions\/3362"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/3359"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=3351"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=3351"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=3351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}