Rapid paving method for layer-spread ceramic fiber furnace lining of vertical annealing furnace

Abstract

The invention relates to an annealing furnace, and especially relates to a furnace lining construction method for a vertical annealing furnace. The rapid paving method for layer-spread ceramic fiber furnace lining of a vertical annealing furnace comprises the following construction steps: analyzing and optimizing a drawing; marshalling and identifying materials; building a scaffold; welding anchor bolts; paving tapetum fibrosums; inserting interior lining panels; processing from top to bottom layer to layer, the lower layer interior lining panel pressing the upper layer interior lining panel, a right side liner plate pressing a left side liner plate, after installation is completed and is confirmed to be correct, performing spot welding on external nuts and screws, preventing the external nuts from getting loose and falling; firmly welding the interior lining panel on the opening with a furnace shell steel plate according to design requirement; cleaning and sweeping; firstly, cleaning coating of spot welding nuts of the interior lining panels, and using clean cotton yarns or cloth to thoroughly wiping the surfaces of the stainless steel interior lining panels; and removing the scaffold. The method thoroughly solves problems that materials of the layer-spread ceramic fiber furnace lining of a vertical annealing furnace are easy to confuse and solves problems of joints and straight joints. The method reduces consumption of materials to the largest extent.

Description

technical field [0001] The invention relates to an annealing furnace, in particular to a lining construction method of a vertical annealing furnace. Background technique [0002] The vertical continuous annealing furnace includes a preheating chamber, a heating chamber, a soaking chamber, a slow cooling chamber, a fast cooling chamber and an aging chamber, etc. The furnace lining is mostly made of layered refractory ceramic fiber structure, and the surface is protected by stainless steel lining. The structure of each furnace chamber is basically independent, connected together through the passage between furnace chambers, the height reaches 25m ~ 30m, and the width of the clearance in the furnace is generally not more than 2m. The thickness of the furnace lining is 200mm~300mm, and 8~12 layers of 25mm thick refractory ceramic fiber blankets with different temperature levels are mostly used. [0003] Due to the large number of layers and different grades of the fiber structu...

AI Technical Summary

Problems solved by technology

[0003] Due to the large number of layers and different grades of the fiber structure, the horizontal paving method is often used and the paving of each layer of the platform must be completed at one time. Due to the space constraints of the inner and outer platforms of the furnace, the stacked fiber blankets are very easy to use due to the same color and thickness. to confuse

Regardless of whether horizontal paving or longitudinal paving is used in the paving process, there are always problems of varying degrees in the joint treatment of each section of the furnace lining, such as confusion of fiber grades, insufficient size of the inner and outer layer staggered seams, and insufficient butt joints.

Especially when the construction period is required to be ultra-short (retrofit or overhaul), the construction quality of the furnace lining is more prone to problems