{"id":2517,"date":"2026-04-26T08:51:02","date_gmt":"2026-04-26T00:51:02","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2517"},"modified":"2026-04-27T08:52:06","modified_gmt":"2026-04-27T00:52:06","slug":"granite-stone-surface-processing-requirements","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/fr\/2026\/04\/26\/granite-stone-surface-processing-requirements\/","title":{"rendered":"Exigences relatives au traitement de surface du granit"},"content":{"rendered":"

I. Mat\u00e9riel de base requis (assurez-vous d\u2019abord de disposer de la pierre elle-m\u00eame)
Pierre : Jinan Green (G3701), Zhangqiu Black ou tout autre granit \u00e9quivalent \u00e0 haute densit\u00e9 et \u00e0 grain fin
Densit\u00e9 : \u2265 3,0 g\/cm\u00b3 (plateforme haute pr\u00e9cision : \u2265 3,2)
Absorption d'eau : \u2264 0,251 TP3T (pr\u00e9cision \u2264 0,051 TP3T)
Duret\u00e9 : duret\u00e9 selon l'\u00e9chelle de Mohs \u2265 6, surface de travail \u2265 70 HS
Structure : sans fissures, sans cavit\u00e9s sableuses, sans inclusions de scories, sans couche d'alt\u00e9ration, teneur en biotite <5%<\/p>\n\n\n\n

II. Traitement de la surface de travail (\u00e9l\u00e9ment le plus critique, applicable aux MMT et aux socles de microm\u00e8tres)<\/p>\n\n\n\n

    \n
  1. M\u00e9thode de traitement
    Obligatoire : Meulage grossier \u2192 Meulage fin \u2192 Meulage de pr\u00e9cision \u2192 Polissage \/ Meulage miroir (les plateformes de haute pr\u00e9cision interdisent le traitement \u00e0 la flamme et la finition \u00ab litchi \u00bb)<\/li>\n\n\n\n
  2. Plan\u00e9it\u00e9 (niveau de pr\u00e9cision selon la norme GB\/T 4987)
    Calibres courants (en fonction de la taille de la surface de travail) :
    Classe 000 : \u2264 1,5 \u03bcm \/ 300 mm (machine \u00e0 mesurer tridimensionnelle \u00e0 tr\u00e8s haute pr\u00e9cision)
    Grade 00 : \u2264 3 \u03bcm \/ 300 mm (haute pr\u00e9cision g\u00e9n\u00e9rale)
    Classe 0 : \u2264 6 \u03bcm \/ 300 mm (pr\u00e9cision standard)
    La plan\u00e9it\u00e9, sur toute zone de 250 \u00d7 250 mm, ne doit pas d\u00e9passer la moiti\u00e9 de la tol\u00e9rance globale.<\/li>\n\n\n\n
  3. Rugosit\u00e9 de surface
    Surface de travail : Ra \u2264 0,4 \u03bcm (0,2\u20130,4 \u03bcm : valeur optimale)
    Surface non active \/ C\u00f4t\u00e9 : Ra \u2264 6,3\u201312,5 \u03bcm<\/li>\n\n\n\n
  4. Exigences en mati\u00e8re d'apparence
    Surface de travail : pas de rayures, pas de traces de choc, pas de rouille, pas de piq\u00fbres, pas de d\u00e9coloration
    Brillance : la surface rectifi\u00e9e avec pr\u00e9cision pr\u00e9sente une finition mate\/brillante uniforme, sans variations locales de brillance (zones plus ou moins brillantes).<\/li>\n<\/ol>\n\n\n\n

    III. Traitement des bords et des trous (indispensable pour les guides et les plateformes)
    Angles : chanfrein C0,5\u2013C2, pas d'\u00e9br\u00e9chures, pas de bavures
    Perpendicularit\u00e9 lat\u00e9rale : \u2264 0,02 mm\/m (classe 00)
    Trous filet\u00e9s \/ Trous de fixation :
    Tol\u00e9rance d'espacement des trous : \u00b10,1 mm
    Pas d'\u00e9br\u00e9chures au niveau des ouvertures des trous ; les filetages passent les jauges \u00ab go\/no-go \u00bb.<\/p>\n\n\n\n

    IV. Traitement de surface hors service
    Dos \/ C\u00f4t\u00e9s : pon\u00e7age grossier ou sablage, surface plane sans irr\u00e9gularit\u00e9s importantes, petites retouches autoris\u00e9es
    Face inf\u00e9rieure : plan\u00e9it\u00e9 de la face inf\u00e9rieure de montage \u2264 0,1 mm\/m, garantissant le contact avec les supports<\/p>\n\n\n\n

    V. Normes d'inspection (peuvent \u00eatre incluses dans le contrat)
    Plan\u00e9it\u00e9 : Niveau \u00e9lectronique \/ Interf\u00e9rom\u00e8tre laser, contr\u00f4le par la m\u00e9thode de la grille \/ m\u00e9thode diagonale
    Rugosit\u00e9 : Appareil de mesure de la rugosit\u00e9 de surface
    Aspect : inspection visuelle sous un \u00e9clairage intense ; contr\u00f4le tactile visant \u00e0 v\u00e9rifier l'absence d'irr\u00e9gularit\u00e9s<\/p>\n\n\n\n

    VI. R\u00e9sum\u00e9 (Pour les clients \/ Devis)
    Fabriqu\u00e9 en granit \u00ab Jinan Green \u00bb \u00e0 haute densit\u00e9, avec une surface de travail trait\u00e9e par rectification de pr\u00e9cision \u00e0 temp\u00e9rature constante. La plan\u00e9it\u00e9 atteint le grade 00 (\u2264 3 \u03bcm\/300 mm), la rugosit\u00e9 Ra \u2264 0,4 \u03bcm. Sans fissures ni pores, avec des bords chanfrein\u00e9s lisses. Se caract\u00e9rise par une pr\u00e9cision stable, une r\u00e9sistance \u00e0 l'usure et une r\u00e9sistance \u00e0 la d\u00e9formation.<\/p>\n\n\n\n

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

    I. Basic Material Requirements (Ensure the stone itself first)Stone: Jinan Green (G3701), Zhangqiu Black, or equivalent high-density fine-grain graniteDensity: \u22653.0 g\/cm\u00b3 (High-precision platform \u22653.2)Water Absorption: \u22640.25% (Precision grade \u22640.05%)Hardness: Mohs hardness \u22656, working surface \u226570HSStructure: Crack-free, no sand holes, no slag inclusions, no weathering layer, biotite content <5% II. Working Surface Processing (Most critical, applicable…<\/p>","protected":false},"author":1,"featured_media":2520,"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-2517","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_20260420155319_96_25.png",582,906,false],"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":423,"filter":"raw","cat_ID":35,"category_count":423,"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\/2517","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=2517"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2517\/revisions"}],"predecessor-version":[{"id":2521,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2517\/revisions\/2521"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/2520"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}