Laser processing is extremely sensitive to vibration. If the spot drifts by just a few microns, cutting will result in burrs and ges, welding will have false welds, and marking will have ghosting.
Cast iron\/Steel plate: Metal is prone to resonance; vibration is high when motors and guides mond long-term resonance causes fatigue deformation.
Granite: The damping coefficient is over 10 times that of cast iron, resulting in almost no resonance and extremely strong vibration absorption.
\u2192 The spot is stable, the cutting surface is smooth, welding precision is high, and yield rate improves directly.<\/li>\n\n\n\n
Laser equipment works continuously for long periods, causing large fluctuations in optical path, motor, and ambient temperatures:
Cast iron has a high coefficient of thermal exp temperature rises, it expands and bends, causing the base to warp and the optical path to shift.
Granite (Jinan Black) has an extremely low coefficient of thermal xpansion; a 1\u00b0C temperature change results in deformation <0.1\u03bcm, crushing metal in terms of constant temperature performance.
\u2192 For long-term 24-hour continuous production, prion does not drift, and there is no need to frequently adjust the optical path or focus.<\/li>\n\n\n\n
Cast iron: Under long-term force and vibration, it undergoes stress release and creep deformation. Precision drops significantly after 1-2 years, a common problem with old equipmnt.
Granite: Natural dense crystalline structure with extremely low internal stress. It remains permanently undeformed after thermal aging. Grade 00\/000 precision can be maintaine for over 10 years.
\u2192 After retrofitting old equipment, precision is maximized, and service life is doubled.<\/li>\n\n\n\n
Laser equipment uses linear guides and high-speed slides, requiring extremely high flatness and parallelism for installation benchmarks:
Cast iron bases can only achieve flatnes at the 0.05mm level, with microscopic ripples.
Granite can achieve flatness \u22641\u03bcm and a nanometer-level mirror finish (Ra\u22640.05\u03bcm), ensug perfect adhesion of the guide.
\u2192 High-speed movement is smooth without jamming, and repeat positioning accuracy is significantly improved.<\/li>\n\n\n\n
Laser cutting and welding produce metal dust, high-temperature oxide scales, water vapor, and corrosive fumes:
Cast iron\/Steel plate: Extely prone to rusting, corrosion, and flaking, which pollutes guides and optical paths.
Granite: Does not rust, is corrosion-resistant, does not oxidize, oes not shed powder. It is easy to clean and adapts to long-term harsh working conditions.<\/li>\n\n\n\n
Granithigh density and extremely high rigidity, and hollowing-out weight reduction grooves can be made:
Under equal rigidity, granite is 30%-50% lighter thn cast iron. The inertia of slides and crossbeams is smaller, allowing for faster start\/stop and higher processing efficiency.<\/li>\n\n\n\n
Modern laser equipment upgrades involve integrated irregular bases with vacuum grooves, wiring channels, dense mounting holes, and cantilever structures:
Granite can be formed integrally through CNCnd precision grinding, offering strong overall rigidity and no splicing seams. In contrast, cast iron welding and casting are prone to deformation and poor precision.<\/li>\n\n\n\n
Cast Iron: Precision declines after 2-3 years, requiring major overhauls, calibration, and part replacements, with extremely high hidden costs
Granite: One-time investment, lifetime calibration-free and maintenance-free; equipment value increases directly after retrofitting, allowing customers to recoup their investment quickly<\/li>\n<\/ol>\n\n\n\n
![\"\"](\"https:\/\/jtlcnc.com\/wp-content\/uploads\/2026\/05\/\u5fae\u4fe1\u56fe\u7247_20260512105646_45_25-1.png\")
<\/figure>","protected":false},"excerpt":{"rendered":"Why are granite bases almost universally used when retrofitting\/upgrading laser equipment?When upgrading laser equi(fiber laser cutting machines, marking machines, welding machines, picosecond\/femtosecond lasers, precision inspection laser equipment) or retrofitting old machines,r 95% of the time, cast iron, steel plate, or profile bases are directly replaced with granite. There are 8 core reasons, all directly addressing…<\/p>","protected":false},"author":1,"featured_media":2774,"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-2771","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_20260519111040_54_25.png",1008,675,false],"author_info":{"display_name":"jinxing6611@gmail.com","author_link":"https:\/\/jtlcnc.com\/es\/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\/es\/wp-json\/wp\/v2\/posts\/2771","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/comments?post=2771"}],"version-history":[{"count":1,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/2771\/revisions"}],"predecessor-version":[{"id":2775,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/posts\/2771\/revisions\/2775"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/media\/2774"}],"wp:attachment":[{"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/media?parent=2771"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/categories?post=2771"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jtlcnc.com\/es\/wp-json\/wp\/v2\/tags?post=2771"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}