Furnace beam and vertical column fire-resistant thermal insulation lining structure of walking beam furnace for heating high-temperature oriented silicon steel and manufacturing method of structure
A walking heating furnace and oriented silicon steel technology, which is applied in the field of heating furnaces, can solve the problems of lower surface temperature, higher maintenance costs, and damage to the integrity of heat insulation linings, so as to buffer the difference in thermal expansion performance, improve high temperature oxidation resistance, The effect of improving overall performance
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[0058] Example 1
[0059] A walking-type heating furnace beam and column refractory insulation lining structure for heating high-temperature oriented silicon steel, comprising a metal tube 5 forming the foundation of the furnace beam or column, wherein the metal tube 5 forming the foundation of the furnace beam is provided with intervals along the axis direction Heat-resistant cushion 4, the outer wall of the metal pipe 5 is evenly distributed with metal anchors 3 along the axial and circumferential directions, and the outer wall of the metal pipe 5 is poured with a fire-resistant insulation layer 1 integrated with the metal anchors 3, and a fire-resistant insulation layer 1 The outer surface is also covered with an anti-sticking slag layer 2 and an anti-oxidation coating 6 in sequence.
[0060] The metal anchor 3 has a V-shaped structure with a diameter of 6-8 mm, and its top end is 5-10 mm away from the outer surface of the fire-resistant insulation layer 1; the heat-resistant pa...
Example Embodiment
[0068] Example 2
[0069] In this embodiment, the structure of the walking-type heating furnace beam and column refractory insulation lining for heating high-temperature oriented silicon steel is the same as that of Embodiment 1, except that:
[0070] Lightweight, high-strength heat-insulating refractory castable, its raw materials include by weight percentage:
[0071] 35% lightweight mullite aggregate, 10% aluminum-rich spinel hollow sphere, 5% andalusite, 8.75% aluminum-rich spinel powder, 5% kyanite powder, 8% silica powder, 10% ρ-Al 2 O 3 Micropowder, 12% pure calcium aluminate cement, 6% refractory fiber, 0.05% sodium hexametaphosphate, 0.15% FS20 refractory castable water reducing agent, 0.04% water-soluble WD-10 silane coupling agent and 0.01 % Defoamer.
[0072] Wherein, the Al of the lightweight mullite aggregate 2 O 3 Content ≥60%, bulk density of 1~5mm particles ≤1.0g / cm 3 , Consists of two particle gradations with a particle size of greater than 3mm and less than or equa...
Example Embodiment
[0077] Example 3
[0078] In this embodiment, the structure of the walking-type heating furnace beam and column refractory insulation lining for heating high-temperature oriented silicon steel is the same as that of embodiment 1, except that:
[0079] A light-weight, high-strength heat-insulating refractory castable, and its raw materials include by weight percentage:
[0080] 35% lightweight mullite aggregate, 10% aluminum-rich spinel hollow sphere, 8% andalusite, 5% aluminum-rich spinel powder, 6% kyanite powder, 7% silica powder, 8% ρ-Al 2 O 3 Micropowder, 16% pure calcium aluminate cement, 4.74% refractory fiber, 0.1% sodium hexametaphosphate, 0.1% FS20 refractory castable water reducing agent, 0.045% water-soluble WD-10 silane coupling agent and 0.015 % Defoamer.
[0081] Wherein, the Al of the lightweight mullite aggregate 2 O 3 Content ≥60%, bulk density of 1~5mm particles ≤1.0g / cm 3 , It is composed of particle gradation with a particle size of 1~3mm, the particle size of the...
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