{"id":2502,"date":"2026-04-24T08:38:38","date_gmt":"2026-04-24T00:38:38","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2502"},"modified":"2026-04-24T08:38:40","modified_gmt":"2026-04-24T00:38:40","slug":"why-is-high-quality-precision-granite-the-preferred-material-for-the-worktable-of-a-high-precision-coordinate-measuring-machine","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/fr\/2026\/04\/24\/why-is-high-quality-precision-granite-the-preferred-material-for-the-worktable-of-a-high-precision-coordinate-measuring-machine\/","title":{"rendered":"Pourquoi le granit de haute qualit\u00e9 et de grande pr\u00e9cision est-il le mat\u00e9riau privil\u00e9gi\u00e9 pour la table de travail d'une machine de mesure par coordonn\u00e9es de haute pr\u00e9cision ?"},"content":{"rendered":"

High-Precision CMM Worktable
Why Premium Precision Granite (Jinan Qing) is the First Choice
Extremely long-term dimensionay, virtually permanent deformation resistance
Natural granite has undergone natural aging over hundreds of millions of years, completely releasing internal stresses. Unlike cast iron or steel, it does not cr, deform, or age over time, perfectly matching the high-precision reference requirements of CMMs.
Extremely low coefficient of thermal expansion, minimal temperature influence
Granite’s thermal expansion andtraction are far less than steel or aluminum. Slight workshop temperature differences or room temperature fluctuations will not cause deformation of the table surface, ensuring more stable measurement repeatability.
Hgh rigidity, high damping, excellent anti-vibration performance
With high density and excellent shock absorption, it can counteract ground vibrations and equipment operational vibrations, ensuring precise and drift-free scanning and touch-probe measurements.
Rust-proof, non-magnetic, corrosion-resistant
It does not rust or oxidize, is immune to magnetic field interference, and is resistant rrosion from cutting fluids, oil stains, and moisture, ensuring the working surface precision does not degrade with long-term use.
Extremely easy to machine with ultra-high flass
It can be precision ground to achieve micron and sub-micron level flatness. The surface is smooth and uniform, serving as a CMM reference surface with minimal tolerance and extremely high onformity.
Wear-resistant, high hardness, resistant to scratches
With high Mohs hardness, it is not prone to burrs or protrusions during daily cleaning or tooling loadin, preventing interference with probe measurement values.
Material consistency with CMM crossbeam and column
The entire machine undergoes synchronous thermal deformation, avoiding relative errors caused by temperature differences between components, sly improving overall measurement accuracy.<\/p>\n\n\n\n

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Oplus_131072<\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"

Table de mesure pour MMT de haute pr\u00e9cision : pourquoi le granit de pr\u00e9cision haut de gamme (Jinan Qing) est le choix num\u00e9ro un. Stabilit\u00e9 dimensionnelle \u00e0 tr\u00e8s long terme, r\u00e9sistance quasi permanente \u00e0 la d\u00e9formation. Le granit naturel a subi un vieillissement naturel pendant des centaines de millions d\u2019ann\u00e9es, ce qui a permis d\u2019\u00e9liminer compl\u00e8tement les contraintes internes. Contrairement \u00e0 la fonte ou \u00e0 l'acier, il ne se fissure pas, ne se d\u00e9forme pas et ne vieillit pas avec le temps, ce qui r\u00e9pond parfaitement aux exigences de r\u00e9f\u00e9rence de haute pr\u00e9cision des MMT. Extr\u00eamement\u2026<\/p>","protected":false},"author":1,"featured_media":2505,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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-2502","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\/04\/\u5fae\u4fe1\u56fe\u7247_20260420154242_90_25-1024x719.png",1024,719,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":421,"filter":"raw","cat_ID":35,"category_count":421,"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\/2502","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=2502"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2502\/revisions"}],"predecessor-version":[{"id":2506,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2502\/revisions\/2506"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/2505"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}