US 12,064,839 B2
Method for producing a composite element
Christian Ott, Ampfing (DE)
Assigned to SCHOTT AG, Mainz (DE)
Filed by SCHOTT AG, Mainz (DE)
Filed on Jun. 5, 2020, as Appl. No. 16/893,458.
Claims priority of application No. 10 2019 115 204.6 (DE), filed on Jun. 5, 2019.
Prior Publication US 2020/0384587 A1, Dec. 10, 2020
Int. Cl. B23P 19/04 (2006.01); H01B 17/26 (2006.01); H01B 19/00 (2006.01)
CPC B23P 19/04 (2013.01) [H01B 17/26 (2013.01); H01B 19/00 (2013.01); Y10T 29/49155 (2015.01)] 19 Claims
OG exemplary drawing
 
1. A method for producing a composite element, comprising
providing structural parts consisting of an outer frame and an inner component;
wherein the outer frame comprises metal and has a first coefficient of thermal expansion in a first spatial direction and a second coefficient of thermal expansion in a second spatial direction, the first and second coefficient of thermal expansions differing from one another;
wherein the inner component comprises a material selected from a group consisting of glass, quartz, sapphire, glass ceramic, ceramic, laser glass, and crystal;
heating the outer frame to an expanded state to have the outer frame expanded with respect to the inner component in the first spatial direction in accordance with the first coefficient of thermal expansion and expanded along the second spatial direction in accordance with the second coefficient of thermal expansion;
inserting the inner component in the outer frame when in the expanded state; and
cooling the outer frame so that the outer frame contracts from the expanded state until the inner component is fitted in outer frame under compressive stress.