A downstream roll for glass manufacture comprises at least one millboard piece. At least a portion of an outer peripheral surface of the downstream roll comprises infiltrated ceramic particles. The infiltrated ceramic particles are infiltrated to a depth of about 1 mm to about 10 mm. Further examples of the disclosure include methods for manufacturing a glass ribbon and a downstream roll for glass manufacture.

A hot glass sheet processing system includes a roller conveyor (22) having sintered bonded fused silica rollers (24) and a roller support structure (34) located within a heated location (32) together with an elongated cooling unit (36) having a housing (38) defining a cooling chamber (40) that receives and has bearings (42) that rotatably support an aligned set of roller ends (30) having end caps (86) adhesively bonded to the roller ends. The cooling unit includes a cooling circuit that supplies cooling fluid to the cooling chamber (40) to provide cooling of the aligned set of roller ends (30) and the bearings (42).

A glass sheet processing apparatus includes a glass sheet processing station including a laser cutting assembly that includes an optical arrangement positioned in a beam path of the laser providing a laser beam focal line that is formed on a beam output side of the optical arrangement. A glass holding conveyor belt carries a glass sheet by the laser cutting assembly so that the laser beam focal line is positioned on the glass sheet with the glass sheet on the glass holding conveyor belt. The glass holding conveyor belt is configured to carry multiple glass sheets to the laser cutting assembly for cutting the multiple glass sheets on the glass holding conveyor belt in a repeated fashion.

A glass sheet processing apparatus includes a glass sheet processing station including a laser cutting assembly that includes an optical arrangement positioned in a beam path of the laser providing a laser beam focal line that is formed on a beam output side of the optical arrangement. A glass holding conveyor belt carries a glass sheet by the laser cutting assembly so that the laser beam focal line is positioned on the glass sheet with the glass sheet on the glass holding conveyor belt. The glass holding conveyor belt is configured to carry multiple glass sheets to the laser cutting assembly for cutting the multiple glass sheets on the glass holding conveyor belt in a repeated fashion.

A device for heat treatment is provided. The device includes at least one processing chamber arranged in an elongated housing having a heating device and having a transport system for continuous transport of material to be treated through the processing chamber. The transport system has two parallel endless conveyor belts spaced from each other and a plurality of cylinders made of quartz glass that bridge the distance between the conveyor belts. The cylinders are supported on these belts and the material to be treated is supported on the cylinders for the heat treatment. The cylinders are designed as twin tubes, formed by two tubular compartments separated from each other by an intermediate partition. Each tubular compartment has a longitudinal axis and is connected rotation-free at its end with the conveyor belts.

A device for heat treatment is provided. The device includes at least one processing chamber arranged in an elongated housing having a heating device and having a transport system for continuous transport of material to be treated through the processing chamber. The transport system has two parallel endless conveyor belts spaced from each other and a plurality of cylinders made of quartz glass that bridge the distance between the conveyor belts. The cylinders are supported on these belts and the material to be treated is supported on the cylinders for the heat treatment. The cylinders are designed as twin tubes, formed by two tubular compartments separated from each other by an intermediate partition. Each tubular compartment has a longitudinal axis and is connected rotation-free at its end with the conveyor belts.

The present invention relates to a water-cooled handling roll (100) for handling a load (50), in particular a thin slab, in a furnace for temperature heating, maintaining and for buffering, arranged between casting and roughing, in a continuous casting and rolling process for thin carbon steel slabs. The roll (100) comprises a first internally hollow shaft (110), which is coated by an insulating and/or refractory material and a plurality of wheels (25) connected in stably fixed manner to an outermost surface (111) of the first shaft (110) to handle and support the load (50). According to the invention, the roll (100) also comprises a second shaft (120) arranged within an inner cavity of the first shaft (110) in position coaxial to the first shaft (110) and so as to define a gap (30) between the first shaft (110) and said second shaft (120). The roll (100) further comprises cooling water circulation means housed at least in part within said second shaft (120).

A hot glass sheet processing system includes a conveyor roller support structure (34) located within a heated location (32) and has an elongated cooling unit (36) having a housing (38) defining a cooling chamber (40) that receives and has bearings (42) that rotatably support an aligned set of roller ends (30). The cooling unit includes a cooling circuit that supplies cooling fluid to the cooling chamber (40) to provide cooling of the aligned set of roller ends (30) and the bearings (42).

A hot glass sheet processing system includes a roller conveyor (22) having sintered bonded fused silica rollers (24) and a roller support structure (34) located within a heated location (32) together with an elongated cooling unit (36) having a housing (38) defining a cooling chamber (40) that receives and has bearings (42) that rotatably support an aligned set of roller ends (30) having end caps (86) adhesively bonded to the roller ends. The cooling unit includes a cooling circuit that supplies cooling fluid to the cooling chamber (40) to provide cooling of the aligned set of roller ends (30) and the bearings (42).

A device for bending sheets of glass running between a bed of upper rolls and a bed of lower rolls forming a shaping bed that pinches the sheets as they run, the shaping bed being disposed in a path having a curved profile in the running direction of the sheets of glass, the shaping bed including at least one roll of what is known as the rod/sheath type including a fixed metal rod preformed in a curved profile lengthwise and a flexible sheath that is able to rotate about the rod, the sheath being rotated about the rod. The roll of the rod/sheath type may include a metal rod preformed in a curved profile lengthwise and a flexible sheath that is able to rotate about the rod, the sheath including a first envelope made of a polymer material and a second envelope made of a flexible metal material disposed around the first envelope, the first and the second envelope rotating together as one.