The invention relates to a conveying system for conveying a material to be conveyed along a conveying path. The conveying system includes a conveying chamber in which the conveying path is arranged. At least one component of a conveying mechanism for conveying the material to be conveyed is arranged outside the conveying chamber. The conveying mechanism includes a traction drive having at least one traction element by means of which carrying elements can be moved in order to convey the material to be conveyed. The carrying elements are arranged in the conveying chamber and protrude through a through-opening out of the conveying chamber. Inside the conveying chamber and/or in the region of the through-opening, the surfaces of the carrying elements are at least partially provided with a thermal insulation material.

A manufacturing process of a press hardened coated part including providing a furnace containing N zones, each furnace zone being respectively heated at a setting temperature Θ.sub.1F, Θ.sub.2F, . . . Θ.sub.iF, . . . , Θ.sub.NF, including: providing a steel sheet with thickness th between 0.5 and 5 mm, the steel sheet covered by an aluminium alloy precoating with a thickness between 15 and 50 μm, the emissivity coefficient being equal to 0.15(1+α), α being between 0 and 2.4, then cutting the steel sheet to obtain a precoated steel blank, then placing the precoated steel blank in furnace zone 1 for a duration t.sub.1 between 5 and 600 s, wherein Θ.sub.1F and t.sub.1 are such that: Θ.sub.1Fmax>Θ.sub.1F>Θ.sub.1Fmin then transferring the precoated steel blank in the furnace zone 2 heated at a setting temperature Θ.sub.2F=Θ.sub.1B and maintaining isothermally the precoated steel blank for a duration t.sub.2, then transferring the precoated steel blank in further zones (3, . . . i, . . . , N) of the furnace, so to reach a maximum blank temperature Θ.sub.MB between 850° C. and 950° C., the average heating rate V.sub.a of the blank between Θ.sub.2F and Θ.sub.MB being between 5 and 500° C./s, then hot forming the heated steel blank so as to obtain a part, then cooling the part to obtain martensite or bainite.

A manufacturing process of a press hardened coated part including providing a furnace containing N zones, each furnace zone being respectively heated at a setting temperature Θ.sub.1F, Θ.sub.2F, . . . Θ.sub.iF, . . . , Θ.sub.NF, including: providing a steel sheet with thickness th between 0.5 and 5 mm, the steel sheet covered by an aluminium alloy precoating with a thickness between 15 and 50 μm, the emissivity coefficient being equal to 0.15(1+α), α being between 0 and 2.4, then cutting the steel sheet to obtain a precoated steel blank, then placing the precoated steel blank in furnace zone 1 for a duration t.sub.1 between 5 and 600 s, wherein Θ.sub.1F and t.sub.1 are such that: Θ.sub.1Fmax>Θ.sub.1F>Θ.sub.1Fmin then transferring the precoated steel blank in the furnace zone 2 heated at a setting temperature Θ.sub.2F=Θ.sub.1B and maintaining isothermally the precoated steel blank for a duration t.sub.2, then transferring the precoated steel blank in further zones (3, . . . i, . . . , N) of the furnace, so to reach a maximum blank temperature Θ.sub.MB between 850° C. and 950° C., the average heating rate V.sub.a of the blank between Θ.sub.2F and Θ.sub.MB being between 5 and 500° C./s, then hot forming the heated steel blank so as to obtain a part, then cooling the part to obtain martensite or bainite.

A glass heating furnace is illustrated. Rollers of the glass heating furnace are pivotally connected to a movable frame, and a roller driver of the glass heating furnace controls the rollers to rotate to a direction of an X axis, and a movable frame driver controls the movable frame to displace reciprocatively along a Y axis, such that the rollers displace along the Y axis at the same time. The glass displaces reciprocatively in multiple directions to be heated up more uniformly, which effectively reduces formation of the thermal stress marks on the glass. Since the rollers displace along the Y axis at the same time, the glass on the rollers does not have the displacement of the Y axis in respect to the rollers, such that friction of the displacement of the glass is reduced, which more effectively reduces formation of the thermal stress marks on the glass.

A heat treatment apparatus has a first screw conveyor, a second screw conveyor, a first nozzle pipe, and a second nozzle pipe. If the first screw conveyor rotates right, the first nozzle pipe is disposed on the left lateral side of the first screw conveyor. If the first screw conveyor rotates left, the first nozzle pipe is disposed on the right lateral side of the first screw conveyor. If the second screw conveyor rotates right, the second nozzle pipe is disposed on the left lateral side of the second screw conveyor. If the second screw conveyor rotates left, the second nozzle pipe is disposed on the right lateral side of the second screw conveyor.

A heat treatment apparatus has a first screw conveyor, a second screw conveyor, a first nozzle pipe, and a second nozzle pipe. If the first screw conveyor rotates right, the first nozzle pipe is disposed on the left lateral side of the first screw conveyor. If the first screw conveyor rotates left, the first nozzle pipe is disposed on the right lateral side of the first screw conveyor. If the second screw conveyor rotates right, the second nozzle pipe is disposed on the left lateral side of the second screw conveyor. If the second screw conveyor rotates left, the second nozzle pipe is disposed on the right lateral side of the second screw conveyor.

The present disclosure relates to a furnace roller and to a roller furnace having such a furnace roller. The furnace roller has a hollow-cylindrical roller body with an interior space. A stopper is arranged in each end-side length portion of the roller body. The stopper is composed of a geopolymer, such as an alkali-activated aluminosilicate.

A heat treatment apparatus has a first screw conveyor, a second screw conveyor, a first nozzle pipe, and a second nozzle pipe. If the first screw conveyor rotates right, the first nozzle pipe is disposed on the left lateral side of the first screw conveyor. If the first screw conveyor rotates left, the first nozzle pipe is disposed on the right lateral side of the first screw conveyor. If the second screw conveyor rotates right, the second nozzle pipe is disposed on the left lateral side of the second screw conveyor. If the second screw conveyor rotates left, the second nozzle pipe is disposed on the right lateral side of the second screw conveyor.

A heat treatment apparatus has a first screw conveyor, a second screw conveyor, a first nozzle pipe, and a second nozzle pipe. If the first screw conveyor rotates right, the first nozzle pipe is disposed on the left lateral side of the first screw conveyor. If the first screw conveyor rotates left, the first nozzle pipe is disposed on the right lateral side of the first screw conveyor. If the second screw conveyor rotates right, the second nozzle pipe is disposed on the left lateral side of the second screw conveyor. If the second screw conveyor rotates left, the second nozzle pipe is disposed on the right lateral side of the second screw conveyor.

A system arranged to transfer graphical images on objects (8) wrapped into transfer supports (2) by sublimation. The system comprises an oven (12) comprising an inlet mouth (21) and an outlet mouth (23), at least one suction unit (14) located along at least one side of the oven (12), a plurality of hooking/unhooking components (50) located along at least one side of the oven (12) and arranged to hook/unhook the objects (8) wrapped by the transfer supports (2), at least one catenary (18) located along at least one side of the oven (12) and arranged to transport the objects (8) wrapped into transfer supports (2) from the inlet mouth (21) to the outlet mouth (23) of the oven (12) by way of the hooking/unhooking components (50). The system further comprises at least one separation wall (71), configured to keep separate a hot zone, in which the oven (12) is active and the hooking/unhooking components (50) are provided, from a cold zone in which the oven (12) is not working and the at least one the catenary (18) and the at least one suction unit (14) are provided. Moreover, the system comprises a handling device (25) configured to move transversely to the inlet mouth (21) and to the outlet mouth (23) of the oven (12) the at least one suction unit (14), the at least one catenary (18) turd the plurality of hooking/unhooking components (50) so that the separation wall (71) keeps separate the hot zone from the cold zone according to the dimensions of objects (8) wrapped by the transfer supports (2). The invention also concerns a method for realizing the system.