Method of assembling a ceramic body
AssigneeOsram Sylvania Inc.
InventorsGregory Zaslavsky, Christopher S. Nordahl, Joseph V. Lima, Arlene Hecker
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Abstract
A method for making a ceramic body is provided wherein the ceramic components are joined in their green state. The method includes applying heat to the surfaces to be joined to cause a localized melting of the binder. The surfaces are then brought together and joined by alternately applying compression and stretching. The method is particularly advantageous for forming unitary ceramic arc tube bodies for high intensity discharge (HID) lighting applications.
Claims21
A method of assembling a ceramic body, the ceramic body containing a binder material and comprising at least a first section having a first joining surface and a second section having a second joining surface, the method comprising the steps of:
- (a) simultaneously heating the first and second joining surfaces to cause localized melting of the binder material;
- (b) initially contacting the first joining surface with the second joining surface to form an interface region;
- and
- (c) alternatively applying compression and stretching to the interface region to join the first section to the second section.
A method of assembling a ceramic arc tube in a green state comprising the steps of:
- (a) securing a first axially symmetric arc tube section in a first holder, the first arc tube section having a first electrode-receiving member and a first cavity-forming member, the first cavity-forming member having a first annular joining surface;
- (b) securing a second axially symmetric arc tube section in a second holder, the second arc tube section having a second electrode-receiving member and a second cavity-forming member, the second cavity-forming member having a second annular joining surface, the first and second arc tube sections containing a binder material;
- (c) simultaneously heating the first and second annular joining surfaces to cause a localized melting of the binder material;
- (d) initially contacting the first annular joining surface with the second annular joining surface to form an interface region;
- and
- (e) joining the first section to the second section by initially displacing at least one of the sections in a forward direction and then displacing at least one of the sections in a reverse direction.
A method for assembling a ceramic arc tube in a green state comprising:
- (a) securing first and second sections of an arc tube in opposed holders, the first and second sections containing a binder material and having first and second joining surfaces, respectively;
- (b) simultaneously heating the first and second joining surfaces to cause localized melting of the binder material;
- (c) contacting the first joining surface with the second joining surface;
- and
- (c) applying an oscillating displacement to join the sections.
Dependencies are inferred from the claim text.