A conveyor unit for moving products in a conveying direction is disclosed. The unit comprises first beams extending along the conveying direction substantially parallel to each other. The first beams are slidably mounted on rollers and are displaceable in a back-and-forth reciprocating motion along the conveying direction between an upstream position and a downstream position. The unit further comprises second beams extending along the conveying direction and arranged interleaved with the first beams. The second beams are configured to be displaceable in an up-and-down reciprocating motion between a lower vertical position and an upper vertical position along a vertical direction that is defined in a plane substantially perpendicular to a plane of the conveying direction, wherein an upper working surface of the first beams is positioned along the vertical direction, between the lower vertical position and the upper vertical position.

Walking beam furnace comprising movable and stationary andirons supported by movable and stationary keels, respectively, and drive means designed to move a lifting frame and a translation frame according to a rectangular displacement cycle having two vertical positions and an intermediate vertical position, the movable andirons being at the same height as the stationary andirons The furnace further comprises stationary and movable beams, the movable beams arranged between the stationary beams and separated from the latter by a space, the movable keels attached to the movable beams, which are attached to the translation frame and arranged at the same height as the stationary refractory beams in the intermediate position. The furnace further comprises a plurality of skirts attached to the other movable beams defining the separation space and dipping into longitudinal water tanks arranged in line with the separation spaces and attached to one of the separation space defining beams.

A conveyor unit for moving products in a conveying direction is disclosed. The unit comprises first beams extending along the conveying direction substantially parallel to each other. The first beams are slidably mounted on rollers and are displaceable in a back-and-forth reciprocating motion along the conveying direction between an upstream position and a downstream position. The unit further comprises second beams extending along the conveying direction and arranged interleaved with the first beams. The second beams are configured to be displaceable in an up-and-down reciprocating motion between a lower vertical position and an upper vertical position along a vertical direction that is defined in a plane substantially perpendicular to a plane of the conveying direction, wherein an upper working surface of the first beams is positioned along the vertical direction, between the lower vertical position and the upper vertical position.

The subject of the present invention is a shielding shoe for covering openings in the bottom of a walking beam furnace, the shielding shoe having a semi-circular recess and can thereby be taken up by a vertical support of the walking beam furnace. The shielding shoe consists essentially of refractory cast concrete or refractory rammed concrete and, according to the invention, has a honeycomb-like structure below the shielding jacket. The present invention also relates to a walking beam furnace with such shielding shoes.

In a heating furnace 10 where elongate workpieces fed into the heating furnace are sequentially transferred on fixed beams by walking beams from an inlet area to an outlet area, concaves to retain the workpieces are formed at least on the walking beams. A concave in the inlet area for heating the workpieces is increased in width in a transfer direction, while a concave in the outlet area where the heated workpieces are wholly heated to a uniform temperature and retained in position is formed in a corrugated configuration. Despite curving of an elongate workpiece being heat treated as transferred by walking beams in a direction crossing a longitudinal direction of the workpiece, this ensures that the curved workpiece is properly transferred and adequately corrected for the curving.

The subject of the present invention is a shielding shoe for covering openings in the bottom of a walking beam furnace, the shielding shoe having a semi-circular recess and can thereby be taken up by a vertical support of the walking beam furnace. The shielding shoe consists essentially of refractory cast concrete or refractory rammed concrete and, according to the invention, has a honeycomb-like structure below the shielding jacket. The present invention also relates to a walking beam furnace with such shielding shoes.