{"id":2064,"date":"2026-03-09T10:14:56","date_gmt":"2026-03-09T02:14:56","guid":{"rendered":"https:\/\/jtlcnc.com\/?post_type=product&p=2064"},"modified":"2026-03-09T10:14:56","modified_gmt":"2026-03-09T02:14:56","slug":"precision-granite-structural-base","status":"publish","type":"product","link":"https:\/\/jtlcnc.com\/ar\/product\/precision-granite-structural-base\/","title":{"rendered":"\u0642\u0627\u0639\u062f\u0629 \u0647\u064a\u0643\u0644\u064a\u0629 \u0645\u0646 \u0627\u0644\u062c\u0631\u0627\u0646\u064a\u062a \u0627\u0644\u062f\u0642\u064a\u0642"},"content":{"rendered":"

I. Material and Core Performance
\nSelected Stone: High-quality black granite represented by **Jinan Green (G3701)**, with sufficienogical aging and extremely low residual stress; Mohs hardness 6\u20137, density 2.65\u20132.8g\/cm\u00b3, water absorption 0.1%; linear expansion coefficient of approximately 4.6\u00d710\u207b\u2076\/\u2103, only half that of steel, resulting in virtually no local warping under uniform temperature chnon-magnetic, resistant to acid and alkali corrosion, and requires no rust prevention treatment.<\/p>\n

Core Performance Advantages
\nHigh Damping Vibration Reduction: Vibration damping perfrmance is 5\u201310 times higher than cast iron, effectively suppressing equipment resonance and external vibration interference;
\nLong-term Precision Stability: No major overhaul or calibration required for 5\u20138 yeas or longer, far exceeding metal bases;
\nSurface Quality: After diamond grinding manual precision lapping, surface roughness can reach Ra0.02\u03bcm, and flatness of small specifications can reach 1.5\u03bcm for Grade 000.<\/p>\n

Limitations: High brittleness and poor impact resistance; rough handling is strictl prohibited; cannot be welded for repair, and severe damage requires complete replacement; long lead time for custom pieces, and initial procurement cost is higher that.<\/p>","protected":false},"excerpt":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n
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