公开(公告)号：US20140120335A1

公开(公告)日：2014-05-01

申请号：US14146167

申请日：2014-01-02

Applicant: ASAHI GLASS COMPANY, LIMITED

Inventor： Kazuhiko YAMANAKA ,  Hitoshi ONODA ,  Aya YAMAMOTO ,  Yusuke FUJIWARA ,  Tetsushi TAKIGUCHI

IPC: C03C3/087 ,  C03C3/085 ,  C03C21/00

CPC classification number: C03C3/087 ,  C03B18/02 ,  C03C3/085 ,  C03C21/002

Abstract: A float glass, which is produced by a float process, has a bottom surface to contact a molten metal during forming and a top surface facing the bottom surface, and is capable of having, after chemical strengthening, a surface compressive stress of 600 MPa or more and a depth of a compressive stress layer of 15 μm or more from a surface thereof. Before chemical strengthening, a difference obtained by subtracting a surface compressive stress value σCB in the bottom surface from a surface compressive stress value σCT in the top surface is −0.6 MPa or more and 0.25 MPa or less.

Abstract translation: 通过浮法制造的浮法玻璃在成形期间具有接触熔融金属的底面和面向底面的顶面，并且能够在化学强化后具有600MPa的表面压应力或 压缩应力层的深度比其表面为15μm以上。 在化学强化之前，通过从顶表面的表面压应力值＆Cgr。CT中减去表面压缩应力值和CB表面获得的差值为-0.6MPa以上且0.25MPa以下。

公开(公告)号：US20170267572A1

公开(公告)日：2017-09-21

申请号：US15458519

申请日：2017-03-14

Applicant: ASAHI GLASS COMPANY, LIMITED

Inventor： Tetsushi TAKIGUCHI ,  Shunji INOUE ,  Kazutaka ONO ,  Hirofumi TOKUNAGA ,  Jun AKIYAMA ,  Yasumasa KATO ,  Taketoshi TANIGUCHI

IPC: C03C3/091 ,  C03B25/08 ,  C03B17/06

CPC classification number: C03C3/091 ,  C03B17/06 ,  C03B18/02 ,  C03B25/08 ,  Y02P40/57

Abstract: The present invention relates to an alkali-free glass substrate, in which when two arbitrary sites in one main surface thereof are selected, an absolute value of a difference between a thermal shrinkage ratio in an arbitrary direction at one site and a thermal shrinkage ratio in a direction orthogonal to the arbitrary direction at another site is 2 ppm or less, provided that the thermal shrinkage ratio is calculated by measuring a deformation amount in a measuring direction of the glass substrate between before and after a heat treatment of raising a temperature from normal temperature to 600° C. at 100° C./hour, holding the glass substrate at 600° C. for 80 minutes, and lowering the temperature from 600° C. to normal temperature at 100° C./hour.