Special graphite used for 3D hot bending glass molds should have excellent high temperature resistance and be able to maintain stability without damage in the high temperature environment required for glass hot bending. Its good thermal conductivity can quickly and evenly distribute heat, which is beneficial for the uniform heating of glass and ensures the quality of hot bending glass.
1、The high compatibility of thermal expansion coefficient of graphite and hot bending glass greatly alleviates thermal stress and ensures product accuracy.
2、Micro porous structure of graphite ensures the flatness and smoothness requirements of hot bending glass.
3、High strength, high hardness, good oxidation resistance, long service life.
Special graphite has high hardness and can withstand the pressure and friction of the glass bending process, ensuring the durability of the mold. It also has a thermal expansion coefficient that matches the glass, which can reduce size changes caused by temperature changes and improve the accuracy of hot bending.
The graphite material is easy to process into various complex shapes and sizes of molds to meet the hot bending needs of different glass products. Meanwhile, it has good chemical stability and is not prone to adverse reactions with glass or other substances.
In the hot bending glass industry, special graphite molds have become one of the key factors in achieving high-quality hot bending glass due to their reliable performance, long service life, and good processing adaptability, providing strong support for producing glass products with diverse shapes and excellent quality.
Mark |
Bulk density （g/cm³) |
Flexural strength （MPa） |
resistivity （μΩm） |
Aperture （μm） |
Shore hardness （HS） |
Thermalexpansion （600℃） |
HJ-M-1 |
≥1.94±0.02 |
≥80 |
14.5±0.5 |
≤0.6 |
≤80 |
6.7 |
HJ-M-2 |
≥1.90±0.02 |
≥80 |
12.5±0.5 |
≤0.8 |
≤65 |
6.4 |