1、 Overview of the Plan
Marble gantry components (such as gantry bed, columns, and beams) are made of natural granite or artificially synthesized stone. With their high rigidity, low coefficient of expansion, and corrosion resistance, they have become an ideal choice for precision machine tools (such as gantry grinders and coordinate measuring machines). This plan focuses on material selection, manufacturing processes, and full lifecycle management to ensure that the gantry structure maintains a long-term precision of ± 0.005mm/m level.
2、 Core advantages
1. Breakthrough in material performance
• Natural granite (Jinan Green/Mount Taishan Green):
Hardness HS70-80, compressive strength 245-254N/mm ²;
The coefficient of thermal expansion is 8 × 10 ⁻⁶/℃, which is only one-third of that of cast iron;
Water absorption rate<0.13%, excellent corrosion resistance.