Ruhrgas Aktiengesellschaft

Loi Essen Industrieofenanlagen Gmbh

Loi Thermprocess Gmbh

Thermoprocess Gmbh

Helmut Heuss

A carrying device for supporting a charge in a reheating furnace is disclosed. The carrying device has several tubular supports through which coolant flows, said tubular supports being provided with high-temperature-resistant riders. Each rider has a top section and a bottom section. The bottom section is limited by sides which are inclined towards each other in the direction of the head section and form protruding steps with the latter. Plate-shaped heat insulation elements supported by support cams are inserted in the resulting recesses. The plate-shaped elements, which are not subject to wear from the movement of the riders, cover the sides of the bottom section of the rider and provide heat insulation for the bottom section. Thus the bottom section is protected against wear-promoting overheating and heat is also prevented from passing from the charge to the bottom section. On the contrary, the plate-shaped elements radiate heat to the charge, thus avoiding the formation of cold charge areas.

Carrying device for supporting a charge in a re-heating furnace

A walking hearth furnace comprising fixed and walking hearths (1 to 3 respectively 4,5) on the refractory lining of which the work (6) is placed. Slanted surfaces are worked into the refractory lining forming depressions (15) and causing the work to be heated from underneath. The pieces of work are arranged in such a manner that spaces form between them, through which the heat from above can act on the slanted surfaces. Furthermore, the slanted surfaces serve to remove the scale both through the slots between the hearths and through scale chutes (16) which lead downwards out of the depressions (15) and operate in conjunction with scale removal devices (22).

Walking hearth furnace

A device for carrying a charge in a reheating furnaces comprising at least one skid pipe through which a cooling fluid flows, the skid pipe having at least one rider provided with at least one surface to support said charge running off center in the longitudinal direction of the skid pipe. According to the invention neighboring surfaces are laterally spaced relative to each other and run at least partially to the side of the skid pipe. Charge exposure to the relatively low temperature around the skid pipe is kept at a very low level and charge temperature is therefore very uniform.

Device for carrying a charge in a furnace

The system comprises at least one coolant-carrying tubular support carrying at least one rider. The latter consists of a heat-resistant cast housing provided with at least one cutout into which a ceramic carrier is inserted. The carrier is of sufficient compressive strength even at a temperature in excess of 1,200.degree. C. The housing remains at a temperature below 1,200.degree. C. and therefore provides a very good support for the carrier which it holds and transfers the loads that occur into the tubular support. The housing is detachably connected with the tubular support by means of a bolt.

System for carrying a charge in a reheating furnace

Steel charges are heated to rolling temperature in reheating furnaces. It is standard practice for the charge to be moved through such a furnace on continuous water-cooled tubular supports crossing the furnace in a straight line. The supports obstruct charge heat-up to the desired temperature at the points where the charge is in contact with the tubular supports. A lateral offset of the tubular supports or similar designs have been unable to overcome this disadvantage. The tubular supports of the present reheating furnace are therefore several times offset from a straight line through the furnace between the furnace inlet and the furnace exit or, in the case of a furnace with a fixed hearth in the soaking zone, the furnace inlet and the fixed hearth. Each tubular support section between two such offsets is shorter than the upstream tubular support section. The present arrangement is particularly advantageous for pusher-type furnaces or walking-beam furnaces.

Cooled tubular assembly for industrial reheating furnace

A skid system for carrying a charge in a pusher or walking-beam furnace incorporating a cooled skid pipe 3 and at least one rider 1 fitted on the skid pipe for carrying the charge in the furnace is, for permanent and effective insulation of the cooled skid pipe in the rider area designed for the rider 1 to comprise a charge-carrying support land and two channel-shaped leg portions 2 adjoining the land, the leg portions surrounding part of the periphery of the cooled skid pipe 3 in a spaced-apart relationship and for the space between the cooled skid pipe 3 and the inner surfaces of the leg portions 2 to form insulating spaces 4 filled with a thermal insulation material 4'.

Growing community of inventors

Ratingen, Germany

Helmut Heuss