1) All heat treatment furnaces and general heating aluminum melt furnaces with arch span less than 3.016m (furnace temperature ≤ 12,500 ℃). The furnace vault is of a structure. When the furnace temperature of the furnace is greater than 1250℃, the furnace arch span is greater than 3.5m and the furnace wall inside the masonry often need to be dismantled and repaired, it is appropriate to use another structure.
2) There are usually two kinds of heat insulation structures for the heat insulation layer on the surface of the vault of the heating and heat treatment furnace.
3) Multi-layer arches shall be laid in the structural form or as shown. The connection of two adjacent arches shall be handled according to the structure shown, and the elevation of the bottom surface of two adjacent arch bricks of the aluminum alloy solid solution furnace shall be on the same level.
Sloping arch segments can be treated according to the structure shown in FIG. 8-10. The height of each section of the arch must be changed consistently so that the corresponding points of the arch are on the same straight line to ensure the structural strength.
4) On the horizontal thrust transfer surface of the arch foot of the well type furnace, the aluminum alloy aging furnace shall not be laid with insulating bricks (diatomite bricks or light refractory clay bricks). Generally, the insulating bricks shall be laid at a place two layers of bricks (136mm) lower than the bottom surface of the arch foot brick.
5) The laying method of arch structure is different according to the working conditions of arch
It can be divided into two types, the wrong type and the ring type. When drawing construction drawings, it is necessary to indicate on the drawing the masonry method adopted and the brick number and number used for laying one arch ring; When the aluminum alloy quenching furnace is built by mistake, it is necessary to note the number and quantity of the staggered bricks Shared by both ends of the even joint ring.
6) There are usually two ways of laying arch structures
(1) The staggered laying method is suitable for the furnace vault of heating furnace and heat treatment furnace with the same working temperature at each point; All kinds of flue vaults and other arch structures with uniform temperature field and no need for frequent repair.
(2) Ring laying method is suitable for laying the furnace vault of continuous well furnace with different temperature; The working temperature of the car oven is higher, the damage is faster, and all kinds of arches that need to be often removed and repaired are needed
On 2018-08-08 11:45:46
