A method for designing a quench box having first and second blastheads for tempering at least first, second and third sheets of glass each having a different shape is disclosed. The method comprises (i) using the shape of at least the first and second sheets of glass to calculate a first average surface; (ii) using the first average surface to calculate a quench surface of first and second quench modules of the first blasthead; (iii) using the first average surface to calculate a quench surface of a first quench module of the second blasthead; and (iv) using the shape of at least the third sheet of glass to calculate a quench surface of a quench module that replaces a quench module of the first and second blastheads when used to temper the third sheet of glass.

A tempering frame for thermal tempering of glass panes, includes a carrier frame and a support frame that is joined to the carrier frame via a plurality of connection elements and is arranged completely within the carrier frame, wherein the support frame has an upper primary surface for placing a glass pane, a lower primary surface, a front edge, and a rear edge, and wherein the support frame has recesses introduced in the rear edge, which are arranged between adjacent connection elements.

A quench arrangement for quenching glass sheets includes a main quench station having upper and lower main quench heads for performing a primary quench operation on a glass sheet, a first lower secondary quench head located downstream of the main quench station, and a second lower secondary quench head located downstream of the first lower secondary quench head. The arrangement further includes an upper secondary quench system positioned above the first and second lower secondary quench heads, and the upper secondary quench system is cooperable with the lower secondary quench heads to perform further cooling of the glass sheet. The arrangement further includes a conveyor located above the second lower secondary quench head for moving the glass sheet away from the second lower secondary quench head.

A tempering frame for thermal tempering of glass panes, includes a carrier frame and a support frame that is joined to the carrier frame via a plurality of connection elements and is arranged completely within the carrier frame, wherein the support frame has an upper primary surface for placing a glass pane, a lower primary surface, a front edge, and a rear edge, and wherein the support frame has recesses introduced in the rear edge, which are arranged between adjacent connection elements.

A quench arrangement for quenching glass sheets includes a main quench station having upper and lower main quench heads for performing a primary quench operation on a glass sheet, a first lower secondary quench head located downstream of the main quench station, and a second lower secondary quench head located downstream of the first lower secondary quench head. The arrangement further includes an upper secondary quench system positioned above the first and second lower secondary quench heads, and the upper secondary quench system is cooperable with the lower secondary quench heads to perform further cooling of the glass sheet. The arrangement further includes a conveyor located above the second lower secondary quench head for moving the glass sheet away from the second lower secondary quench head.

Disclosed in the present invention is an apparatus for eliminating stress spots on a surface of glass, comprising a conveying assembly, provided with a conveying surface for reciprocally conveying the glass along a conveying direction; an upper air-blowing assembly, provided above the conveying surface, used for guiding air to reciprocally flow above the conveying surface along a swinging direction extending along a width direction of the glass; and a lower air-blowing assembly, provided under the conveying surface, used for guiding air to reciprocally flow under the conveying surface along the swinging direction. A method for eliminating stress spots on a surface of glass comprises a conveying step, a glass swinging step, and an air-cooling step.

Disclosed in the present invention is an apparatus for eliminating stress spots on a surface of glass, comprising a conveying assembly, provided with a conveying surface for reciprocally conveying the glass along a conveying direction; an upper air-blowing assembly, provided above the conveying surface, used for guiding air to reciprocally flow above the conveying surface along a swinging direction extending along a width direction of the glass; and a lower air-blowing assembly, provided under the conveying surface, used for guiding air to reciprocally flow under the conveying surface along the swinging direction. A method for eliminating stress spots on a surface of glass comprises a conveying step, a glass swinging step, and an air-cooling step.