{"id":2475,"date":"2026-04-22T08:10:09","date_gmt":"2026-04-22T00:10:09","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2475"},"modified":"2026-04-22T08:15:17","modified_gmt":"2026-04-22T00:15:17","slug":"precision-granite-manufacturing-solutions","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/ar\/2026\/04\/22\/precision-granite-manufacturing-solutions\/","title":{"rendered":"Precision Granite Manufacturing Solutions"},"content":{"rendered":"

Precision Granite Platform \/ Component Full-Process Manufacturing Solution (National StandardGrade 000\/00\/0 \u00b7 Dedicated for Semiconductor \/ CMM \/ Optical Benchmarks)
Covers the full closed-loop process from material selection \u2192 aging \u2192 CNC machining \u2192 constant temperature manual precion lapping \u2192 structural customization \u2192 precision verification \u2192 installation and after-sales \u2192 long-term stability. Suitable for aviation, semiconductors, precision inspection, machine tool beds, and air-bearingide bases.<\/p>\n\n\n\n

I. Raw Material Selection Scheme (Foundation of Precision)<\/p>\n\n\n\n

    \n
  1. Premium Ore Selection (Jinan Green G3701 \/ Mount Tai Black)
    ensity: 2.97~3.07g\/cm\u00b3, water absorption rate <0.13%, linear expansion coefficient 4.6\u00d710\u2076\/\u2103 (only 1\/3 of cast iron)
    Compressive strength \u2265250MPa, Mohs hardness 6.5~7, uniform internal grain structure, no cracks, nodark streaks, no impurities
    Naturally formed over hundreds of millions of years, extremely low internal stress, long-term resistance to deformation and vibration, non-magnetic, rusnd corrosion-resistant<\/li>\n\n\n\n
  2. Strict Control of Rough Stock
    Strong light flaw detection on rough blocks: no sand holes >\u03c62mm, cracks, color differences, or lose layers
    8~12mm machining allowance reserved, thickening reinforcement for large plates to prevent bending under self-weight
    Radioactivity compliant: IRa1.0, Ir\u22641.3, suitable for laboratories and cleanrooms<\/li>\n<\/ol>\n\n\n\n

    II. Stress Aging and Stabilization Scheme (Eliminate Future Precision Drift)
    Natural rough blocks aged outdoor18~24 months to release original internal stress
    Cut plates aged statically in a constant temperature environment for 30~45 days (20\u00b11\u2103)
    Secondary artificial -temperature stress relief after rough machining to prevent slow deformation after installation
    Stress release re-lapping and leveling after drilling, slotting, and steel bushing insertio<\/p>\n\n\n\n

    III. Full-Process Precision Machining Workflow (CNC Manual Dual Lapping)<\/p>\n\n\n\n

      \n
    1. Rough Cutting and Shaping (Diamond Wire Saw \/ Bridge Cutter)
      High-precision diamond sawade water-cooled cutting, dimensional tolerance within \u00b10.5mm
      Chamfering to remove chipping, lapping allowance reserved, texture direction avoids stress cracking CNC Milling and Grinding of Benchmarks (5-Axis Stone Machining Center)
      CNC diamond wheel surface grinding, milling T-slots, mounting holes, counterbores, and positoning holes
      Rough control of parallelism and perpendicularity \u22640.02mm\/m, removing bulk material and tool marks
      Integrated CNC forming of threaded steel bushings, air-baring holes, and embedded parts<\/li>\n\n\n\n
    2. Multi-Level Constant Temperature Lapping (Core Precision Process \u00b7 20\u00b10.5\u2103 Dust-free Constant Temperature Workshop)
      Snish lapping: Remove tool marks, flatness 0.02~0.05mm\/m
      Fine lapping: Cross-grid reciprocating lapping,flatness \u22640.003mm\/m
      Manual ultimate scraping and matching: Grade 000 micron-level fit, Ra\u22640.005\u03bcm mirror finish
      Assemblof inserts \u2192 overall secondary re-lapping, simultaneous closed-loop control of hole and working surface geometric tolerances<\/li>\n\n\n\n
    3. Special Customization Processes
      Air-bearing guide bases, embedded guidetrips, pre-buried threaded holes, slope benchmarks, and right-angle reference bodies processed integrally
      Moisture-proof and seepage-proof coating, anti-contamination protectionpore sealing treatment for long-term stability in high-humidity environments<\/li>\n<\/ol>\n\n\n\n

      IV. Geometric Precision Grade Standards (GB\/T JJG117)
      \u0627\u0644\u062c\u062f\u0648\u0644
      Precision Grade | Working Surfe Flatness (\u03bcm\/m) | Application Scenario
      000 Grade | \u22642 | CMM, Semiconductor Wafers, Ultra-high Precision Metrology
      0Grade | \u22645 | Optical Inspection, Precision Tooling, Laboratory Benchmarks
      0 Grade | \u226410 | Workshop Inspection, Machine Tool Tooling, General Precision Measurement
      Parallelism, perpeularity, and position tolerance match the flatness grade
      Hole spacing tolerance \u2264\u00b10.005mm, full grid detection of large plate diagonals<\/p>\n\n\n\n

      V. Constant Temperature Environment Inspection Quality Control Scheme
      Dedicated Workshop for Processing\/Calibration: 20\u00b10.5\u2103, Humidity 45%~55%, No direct wind or sunlight, No heat sources
      Inspection Equipment: Swiss WYLER Electronic Level, Laser Interferometer, Mahr Micrometer, Autocollimator
      Inspection Method: Cross Diagonal Full Grid Multi-point Sampling, Plane Error Calculation via Least Squares Method
      Factory Stability Aging: Constant temperature static placement for 72h followed by re-measurement; product is released only if precision shows no rebound<\/p>\n\n\n\n

      VI. Installation and Supporting Solutions
      Three-point Static Determinate Precision Support with adjustable foot screws to eliminate deformation caused by self-weight
      Independent Anti-vibration Concrete Foundation Nitrile Rubber Vibration Isolation Pads to isolate workshop vibrations
      On-site Leveling, Re-measurement Calibration, and Precision Adjustment
      Annual Inspection, Re-research and Repair, and Lifetime Precision Maintenance Service<\/p>\n\n\n\n

      VII. Manufacturing Optimization for Root Cause Resolution of Common Precision Issues
      Temperature Drift: Low-expansion Stone Full-process Constant Temperature, Measurement at Same Temperature as Workpiece
      Long-term Deformation: Ultra-long Natural Aging Step-by-step Stress Relief, Prohibition of Overloading at Single Points
      Scratches and Chipping: Mirror Surface Precision Grinding Workpiece Soft Cushion Protection, Strict Prohibition of Direct Metal Friction
      Hole Position Deviation: Insert Bushings First, Then Final Grinding as a Whole, Closed-loop Precision for Integrated Hole Surfaces<\/p>\n\n\n\n

      VIII. Industry Customization and Adaptation
      CMM Base, Machine Tool Bed, Gantry Beam, Air Bearing Platform
      Semiconductor Inspection, Aerospace Tooling, Optical Reference, Customized Granite Precision Components\u3002<\/p>\n\n\n\n

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

      Precision Granite Platform \/ Component Full-Process Manufacturing Solution (National StandardGrade 000\/00\/0 \u00b7 Dedicated for Semiconductor \/ CMM \/ Optical Benchmarks)Covers the full closed-loop process from material selection \u2192 aging \u2192 CNC machining \u2192 constant temperature manual precion lapping \u2192 structural customization \u2192 precision verification \u2192 installation and after-sales \u2192 long-term stability. Suitable for aviation, semiconductors,…<\/p>","protected":false},"author":1,"featured_media":2478,"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":"","_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-2475","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\/1-1-1024x721.png",1024,721,true],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/ar\/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":151,"filter":"raw","cat_ID":35,"category_count":151,"category_description":"","cat_name":"NEWS","category_nicename":"news","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/2475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/comments?post=2475"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/2475\/revisions"}],"predecessor-version":[{"id":2479,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/2475\/revisions\/2479"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/media\/2478"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/media?parent=2475"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/categories?post=2475"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/tags?post=2475"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}