Novel heat insulation protective layer structure of furnace roller and preparing method thereof

Abstract

The invention relates to a novel heat insulation protective layer structure of a furnace roller and a preparation method thereof, which belong to the technical field of smelting equipment. The novel heat insulation protective layer structure of the furnace roller comprises a roller body, an organic buffering coating, an abnormal-shape metal anchorage, a pouring material layer, a roller ring concave surface, a roller ring and a cooling water conduction pipe, wherein the abnormal-shape metal anchorage comprises a V-shaped metal anchorage, a double-V-shaped metal anchorage and a small V-shaped metal anchorage of the concave surface of the roller ring, and all V-shaped included angles are 60 DEG, wherein the V-shaped plane of the V-shaped metal anchorage is vertical to the furnace roller in the axial direction, and the V-shaped plane of the small V-shaped metal anchorage forms an included angle of 30 DEG with the furnace roller in the axial direction; and the double-V-shaped metal anchorage is formed by welding tip parts of two V-shaped metal anchorages to enable the two V-shaped surfaces to form an included angle of 60 DEG. The axial body and the abnormal-shaped metal anchorage is coated by organic coating, and the pouring material layer is prepared by the entire pouring formation of the light-weight mullite stone reinforced by heatproof steel fiber.

Description

technical field [0001] The invention belongs to the technical field of smelting equipment. Specifically relates to a heat insulation protective layer structure for water-cooled furnace bottom rolls, in particular to a thermal insulation protective layer structure for thin slab continuous casting and continuous rolling roller bottom heating furnace rolls and a preparation method thereof. Background technique [0002] The thin slab continuous casting and rolling production line is a hot-rolled wide-band steel production technology in the 1990s. The roller hearth heating furnace is the connection equipment between the thin slab continuous casting machine and the thin slab continuous rolling mill. The transportation of slabs; moreover, when the rolling mill changes rolls or the rolling stops due to accidents, in order to ensure the normal production of the continuous casting machine, the furnace plays the role of buffering and storing the slabs. Furnace roller is an important ...

AI Technical Summary

Problems solved by technology

Aiming at the deficiency of the heat insulation protection structure of the furnace rolls of Dexing Company in Italy, "A Refractory Castable for Roller Hearth Furnace Rolls" (authorized announcement number CN100408515C) discloses a kind of castable made of fused mullite, coke gem, Heavy refractory castable composed of mullite, heavy bluestone, kyanite, silica micropowder, alumina micropowder, high alumina cement, stainless steel fiber, explosion-proof fiber, sodium tripolyphosphate, water, through improving the heat insulation protection of furnace roller The thermal shock stability of the pouring layer in the structure has achieved the effect of improving the cracking and peeling of the pouring layer to a certain extent, but there are still heavy refractory castables with large volume, high thermal conductivity, poor thermal insulation performance, and the structure of the metal anchor. Defects such as large peeling of the pouring layer caused by the layout method

In summary, compared with foreign technologies, domestic patents have been improved, but due to the fluctuations in the composition and performance of domestic raw materials and the harsh use conditions of furnace rolls, the service life of domestic products is still generally low, resulting in the current domestic thin slab continuous casting and rolling rolls. The furnace rollers of the bottom heating furnace are still mainly imported, which greatly reduces the consumption cost of the furnace rollers

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