Fused silica 재질의 roller로서 주로 유리의 강화로에 많이 사용되며

그 외에 탁월한 내열충격성으로 고온의 설비에 많이 사용됩니다.

                                      Material : SiO   ≥99.8 (wt %)

                                      Bulk density :  1.9 ~ 1.99 g/cm3

                                      Apparent Porosity : ≤ 10

                                      Compressive Strength : ≤ 60 MPa

                                      Bending strength(RT) : ≤ 25 MPa

                                      Bending strength (HT) : ≤ 30 MPa ( 1100℃ x 0.5hr)

                                      Thermal expension : ≤ 0.6 (x 10 ￣6/℃)

                                      Thermal conductivity : 0.65 (500℃)

                                      Diameter tolerance : ±0.05 mm

                                      T.I.R : ≤ 0.1 mm

                                      Roughness : Ra ≤1.6 ㎛