Vibration Resistance: Dampingratio \u2265 0.05 (40% higher than cast iron), amplitude \u2264 0.02 mm\/s.
Wear Resistance: Wear \u2264 0.3 \u03bcm aft maintenance cycle \u2265 2 years.
Impact Toughness: Only local grain detachment upon impact, no plastic deformation.<\/li>\n\n\n\n
Acid and Alkali Re: No obvious corrosion after immersion in 5% HCl\/NaOH for 24 hours.
Rust and Magnetism Resistance: Non-rusting, non-magnetic, good insulationerformance.
Thermal Stability: Dimensional change \u2264 (2-5)\u00d710\u207b\u2076\/\u2103 for every 1\u2103 temperature change.<\/li>\n<\/ol>\n\n\n\n
V. Acceptance and Inspectio Standards<\/p>\n\n\n\n
- \n
- Acceptance Items
Tableau
Item Inspection Method Qualification Standard
Material Properties Third-party testing (GB\/T 9966 seriomplies with Part 1 of this standard
Flatness Laser interferometer \/ Autocollimator Within tolerance of corresponding grade
Form and Position Tolerance Coordinate Measung Machine (CMM) \u2264 0.005 mm\/m
Surface Roughness Roughness meter Ra \u2264 0.63 \u03bcm
Dimension Deviation Caliper \/ Micrometer \u2264 \u00b10.5 mm
Appearance Visual inspection Magnifying glass (\u226510x) No defects affecting precision
ry Documents
Material certificate, test report (including GB\/T 9966 series).
Processing drawings, precision inspection records.
Installation and maintenance manual, warranty certificate (precisionwarranty \u2265 1 year).<\/li>\n<\/ol>\n\n\n\nVI. List of Key Standards
GB\/T 20428-2006: Rock Slabs (Core metrology standrd).
JB\/T 7974-2013: Technical Conditions for Granite Precision Components (Mechanical industry standard).
GB\/T 9966 series: Test methods for natural sto (Physical \/ Chemical property testing).
GB 6566: Limit of radionuclides in building materials (Safety standard).
JG 117-2013: Verification regulation for slabs (Metrological calibration).<\/p>\n\n\n\nVII. Selection and Application Suggestions
Select grade according to scenario:
Metrology benchmark \/ Semiconductore 000, water absorption rate \u2264 0.13%.
Precision machine tools \/ CMM: Grade 00, flatness \u2264 10 mm.
General inspection \/ Tooling: Grade 0, meets usage requirements.
Supplier Capability: Prioritize manufacturers with ore source control, constant temperature processing, and full-process inspection, oviding CNAS certified reports.
Installation and Maintenance:
Installation: Level adjustment to \u2264 0.005 mm\/m, avoid direct sunlight \/ vibration sources.
Maintenance: Regular cleaning (neual cleaner), avoid strong acid corrosion, calibrate precision once a year.<\/p>\n\n\n\n![\"\"](\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/02\/\u5927\u7406\u77f3\u5e73\u53f01.jpg\")
<\/figure>","protected":false},"excerpt":{"rendered":"I. Material and Appearance Requirements 1. Material Selection (Core Indicators) Table Indicator Technical Requirements Test Standard Typical Application Scenarios Material Fine grain, dense and uniform; preferred materials: Jinan Green \/ Mount Tai Green \/ Zhangqiu Black; recycled or dyed materials prohibited Petrographic analysis (GB\/T 9966.3) High-precision benchmarks, machine tool beds Bulk Density \u22652.6 g\/cm\u00b3 GB\/T…<\/p>","protected":false},"author":1,"featured_media":2344,"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-2341","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_20260402095129_45_11.jpg",725,661,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":123,"filter":"raw","cat_ID":35,"category_count":123,"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\/2341","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=2341"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2341\/revisions"}],"predecessor-version":[{"id":2345,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/posts\/2341\/revisions\/2345"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media\/2344"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/media?parent=2341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/categories?post=2341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/fr\/wp-json\/wp\/v2\/tags?post=2341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}