{"id":1968,"date":"2026-03-03T08:37:36","date_gmt":"2026-03-03T00:37:36","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=1968"},"modified":"2026-03-03T08:37:38","modified_gmt":"2026-03-03T00:37:38","slug":"granite-platform-processing-requirements","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/fr\/2026\/03\/03\/granite-platform-processing-requirements\/","title":{"rendered":"Exigences en mati\u00e8re de traitement de la plate-forme de granit"},"content":{"rendered":"
    \n
  1. Material Requirements
    Stone material
    Use natural granite with dense structure, uniform grains, no, and no impurities, such as Jinan Qing, Taishan Qing, Fengzhen Black, etc.
    Raw material performance requirements
    Compressive strength\u2265 200 MPa
    Shore hardness \u2265 HS70
    Water absorption rate \u2264 0.15%
    Thermal expansion coefficient \u22643\u00d710\u207b\u2076 \/\u2103
    Non-magnetic, non-conductive, acid and alkali resistant, corrosion resistant
    Raw material processing
    The raw material must undergo aging artificial aging to completely eliminate internal stress and prevent deformation in the later stage.<\/li>\n\n\n\n
  2. Process Flow Requirements
    Standard precision machining process (indispensable):
    material cutting \u2192 2. Rough grinding \u2192 3. Aging stability treatment \u2192 4. Semi-fine grinding \u2192 5. Fine grinding \u2192 6. Pol \u2192 7. Scraping \/ Polishing \u2192 8. Precision inspection \u2192 9. Cleaning and packaging<\/li>\n\n\n\n
  3. Geometric Accuracy Machining Requirements
    1.ness (core accuracy)
    Implement according to GB\/T 24519, grade classification:
    000 grade (reference grade)
    00 gradehigh precision grade)
    0 grade (metrology grade)
    1 grade (general workshop grade)
    Flatness detection method:
    Pitch method (level \/ self-limator)
    Error is assessed according to the minimum area method.<\/li>\n\n\n\n
  4. Verticality, parallelism (applicable to T-slots \/ square boxes \/ rightangle rulers)
    Verticality of working surface to side: 00 grade \/ 000 grade platform \u2264 0.01 mm\/m
    Parallelism upper and lower working surfaces: Implement according to the corresponding flatness grade<\/li>\n\n\n\n
  5. Thickness, dimensional tolerance
    Length, width tolerance: \u00b10.5 mm
    Th tolerance: \u00b11.0 mm
    Verticality error of four corners \u2264 0.03 mm\/m<\/li>\n\n\n\n
  6. Surface Machining Quality Requirements
    Surface rough
    Precision measuring surface: Ra \u2264 0.2\uff5e0.4 \u03bcm
    Smooth, no scratches, no sand holes, no black spots, no cracksSurface appearance
    The color of the working surface is uniform and consistent
    The chamfer is uniform, smooth, and there is no chipped corner
    No patching, no, no grinding marks
    Luster
    The precision grinding surface has uniform luster, and local brightening or darkening is not allowed.<\/li>\n\n\n\n
  7. T-Slot,ed Hole Machining Requirements
    If the platform has slots or holes, it must meet:
    Straightness and parallelism of T-slots conform to the corresponding precision grade the platform
    The slot surface is smooth and free of burrs, and the slot pitch tolerance \u00b10.1 mm
    The depth and position of the threaded hole are accurate without uneven threads or chipped edges
    After drilling, stress must be removed and re-fine grinding to ensure that the overall flatness does not decrease<\/li>\n\n\n\n
  8. Environment and Temperature Requirements
    Precision grinding, polishing, scraping, and inspection must be carried out in a constant temperature workshop:
    Temperature: 20\u2103\u00b12\u2103Before machining, the workpiece must be placed at a constant temperature \u2265 8h to eliminate thermal deformation
    It is strictly forbidden to carry out final precision machining in environment with large temperature difference, large vibration, and large dust<\/li>\n\n\n\n
  9. Stability and Aging Requirements
    Stress removal treatment must be carried out after rough machining
    ary aging is required before fine machining
    Before product delivery, it needs to be stationary and stable to ensure that the precision does not drift over a long period
    The product not produce plastic deformation due to time, temperature, and humidity<\/li>\n\n\n\n
  10. Inspection and Acceptance Requirements
    Each platform must be accompanied by a precision inspection report
    Inspect instruments:
    Digital level \/ optical level
    Self-collimator
    Surface roughness meter
    Inspection methods implement national standards: GB\/T 2451\u20142019
    Products that do not meet the precision requirements are not allowed to leave the factory<\/li>\n\n\n\n
  11. Packaging and Identification Requirements
    The working surface pasted with protective film and covered with moisture-proof film
    The whole is packed in a wooden box to prevent collision, moisture, and shock
    Clear identification:
    Model and
    Precision grade
    Factory number
    Production date<\/li>\n<\/ol>\n\n\n\n
    \"\"<\/figure>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1971,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_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-1968","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\/03\/\u5fae\u4fe1\u56fe\u7247_20260302111003_5_11-1024x529.jpg",1024,529,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":204,"filter":"raw","cat_ID":35,"category_count":204,"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\/1968","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=1968"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/1968\/revisions"}],"predecessor-version":[{"id":1972,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/1968\/revisions\/1972"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/1971"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=1968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=1968"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=1968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}