Conveying device for push-type or continuous-heating furnaces

Metallurgical apparatus – Means treating solid metal – By contact with gas

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266274, 432152, F27D 500

Patent

active

053019296

ABSTRACT:
A crosshead shoe for the sliding transport on rails of a material to be annealed has, for the lateral guiding on the rails, an approximately U-shaped cross section with downwardly projecting legs. Special glide elements are provided on the side of the glide shoe which faces the glide plane, and/or the rail, which glide elements are designed so that as little wear and friction as possible occur during the movement of the crosshead shoes. The glide elements have glide surfaces for this purpose, the side surfaces of which glide surfaces are rounded and/or downwardly inclined, and/or the peripheral edges of which are associated with one another in obtuse angles or have a shape which is at least partially circular. These conditions exist, for example, in glide elements with polygonal or circular surfaces, which can be arranged in one or several rows or in a honeycomb pattern. Since important edges thus extend inclined to the direction of movement and furthermore no break-off-endangered acute edge angle exists, interferences (for example during travel over rail joints) do not act simultaneously onto the entire edge, so that edge break-offs can be substantially avoided. A flow channel is provided between the crosshead shoe and the base of the material being annealed, through which additional hot air is blown against areas of the material shielded from the main stream by the rail and the crosshead shoe.

REFERENCES:
patent: 4444557 (1984-04-01), Kimura et al.
patent: 4676743 (1987-06-01), Ross
patent: 5104314 (1992-04-01), Amore

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