{"id":2719,"date":"2026-05-16T08:44:01","date_gmt":"2026-05-16T00:44:01","guid":{"rendered":"https:\/\/jtlcnc.com\/?p=2719"},"modified":"2026-05-16T08:44:02","modified_gmt":"2026-05-16T00:44:02","slug":"how-is-the-specific-operation-of-constant-temperature-heat-aging-treatment-for-granite-components-performed","status":"publish","type":"post","link":"https:\/\/jtlcnc.com\/ar\/2026\/05\/16\/how-is-the-specific-operation-of-constant-temperature-heat-aging-treatment-for-granite-components-performed\/","title":{"rendered":"How is the specific operation of constant-temperature heat aging treatment for granite components performed?"},"content":{"rendered":"

Granite Component \u00b7 Constant Temperature Heat Aging Standard Operating Procedure (Factory Practical Version, Follow Directly)<\/p>\n\n\n\n

Core Purpose of Granite Heat Aging: Rapidly release internal crystalline stress and cutting\/machining stress to avoid deformation, warping, and loss of precision during subsequent grinding or use. Replaces natural aging of 3\u20136 months, typically completed in 24\u201372 hours.<\/p>\n\n\n\n

Below are the complete operation parameters, steps, temperature control, and precautions, which are industry-standard.<\/p>\n\n\n\n

I. Equipment Preparation
Equipment: Industrial constant temperature oven \/ Hot air circulation aging chamber (Must have hot air circulation; no localized overheating)
Temperature Measurement: Built-in multi-point thermocouples for real-time monitoring of stone surface and internal temperatures
Fixturing: Components placed flat; bottom padded with solid wood or rubber blocks to keep components suspended and not touching the ground to avoid uneven heating<\/p>\n\n\n\n

II. Component Pre-treatment (Before entering the oven)
Rough Machining Completed: All shaping, drilling, slotting, and embedded parts finished; only grinding allowance left
Cleaning: Dust and cutting slurry washed clean; surface dried
Placement:
Large components (bases) placed flat, single layer, no stacking
Irregular beams and columns placed vertically or horizontally padded to prevent bending from heat
Leave 5\u201310cm gaps between components for hot air circulation<\/p>\n\n\n\n

III. Standard Heating \u2014 Soaking \u2014 Cooling Complete Process (Most Common Parameters)<\/p>\n\n\n\n

    \n
  1. Heating Stage (Most critical; strictly prohibit rapid heating)
    Heating Rate: 5\u20138\u00b0C per hour; must not exceed 10\u00b0C\/h to prevent granite cracking
    Gradually heat from room temperature to 55\u201360\u00b0C
    Jinan Blue, Zhangqiu Black, and Indian stones all use 55\u201360\u00b0C; higher temperatures will cause internal cracks and discoloration.<\/li>\n\n\n\n
  2. Soaking Stage (Core of stress relief)
    Soaking Temperature: 55\u00b0C \u00b1 3\u00b0C
    Soaking Time:
    Small components (platforms, straight edges, square boxes): 24h
    Medium machine bases, frames: 48h
    Large \/ Ultra-precision semiconductor, CMM bases: 72h
    Full hot air circulation throughout; temperature must be uniform with no localized high temperatures<\/li>\n\n\n\n
  3. Cooling Stage (Strictly prohibit opening door for rapid cooling)
    Cooling Rate: 3\u20135\u00b0C per hour; slow natural cooling
    Cool down to below 30\u00b0C before opening the oven to remove components
    Prohibited to open door at high temperature, blow air, or pour water; this will cause instant stress rebound and cracking<\/li>\n<\/ol>\n\n\n\n

    IV. Post-Heat Aging Treatment
    After removal, let stand in workshop at room temperature for over 24 hours to naturally return to temperature
    Then proceed with semi-precision milling and precision grinding
    After processing, stability is extremely strong; Class 0\/00 precision remains unchanged for a long time<\/p>\n\n\n\n

    V. Industry Taboos & Pitfall Avoidance (Very Important)
    Temperature must absolutely not exceed 70\u00b0C: Uneven thermal expansion of internal granite crystals will cause internal cracks and edge chipping later
    Do not use rapid heating or rapid cooling; this is the cause of deformation in 90% of factory components
    Must perform aging after rough machining; aging after precision machining or grinding will destroy precision
    Components with metal embedded parts (stainless steel sleeves, screws) are unaffected by heat aging and can be placed in the furnace together
    Jinan Blue has the best stability and most obvious heat aging effect; ordinary light-colored granites are not recommended for high-precision components<\/p>\n\n\n\n

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

    Granite Component \u00b7 Constant Temperature Heat Aging Standard Operating Procedure (Factory Practical Version, Follow Directly) Core Purpose of Granite Heat Aging: Rapidly release internal crystalline stress and cutting\/machining stress to avoid deformation, warping, and loss of precision during subsequent grinding or use. Replaces natural aging of 3\u20136 months, typically completed in 24\u201372 hours. Below are…<\/p>","protected":false},"author":1,"featured_media":2722,"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-2719","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\/05\/\u5fae\u4fe1\u56fe\u7247_20260512094010_42_25.png",829,782,false],"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":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\/ar\/wp-json\/wp\/v2\/posts\/2719","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=2719"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/2719\/revisions"}],"predecessor-version":[{"id":2723,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/posts\/2719\/revisions\/2723"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/media\/2722"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/media?parent=2719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/categories?post=2719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/ar\/wp-json\/wp\/v2\/tags?post=2719"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}