Preparation Method of High-Temperature Molten Salt-Based Heat-Resistant Steel Sheet for Energy Storage

Abstract

A method for preparing a high-temperature molten salt-based heat-resistant steel sheet for energy storage is provided. The specific technical solution is as follows: the method for preparing the high-temperature molten salt-based heat-resistant steel sheet for energy storage, including: cutting an aluminum-containing 310S heat-resistant steel sheet into blocks, and subjecting the blocks to cold rolling at room temperature with a rolling reduction of 0.2 mm per pass to obtain a cold-rolled sheet with a rolling deformation of 90%; and subjecting the cold-rolled sheet to annealing.

What is claimed is: 
     
         1 . A method for preparing a high-temperature molten salt-based heat-resistant steel sheet for energy storage, comprising:
 cutting an aluminum-containing 310S heat-resistant steel sheet into a block, and subjecting the block to cold rolling at room temperature with a rolling reduction of 0.2 mm per pass to obtain a cold-rolled sheet with a rolling deformation of 90%; and   subjecting the cold-rolled sheet to annealing.   
     
     
         2 . The method for preparing the high-temperature molten salt-based heat-resistant steel sheet for energy storage of  claim 1 , wherein the aluminum-containing 310S heat-resistant steel sheet consists of the following compositions: 15 wt. % to 25 wt. % of Ni, 8 wt. % to 15 wt. % of Cr, 1 wt. % to 5 wt. % of Al, 1 wt. % to 5 wt. % of Mn, 0.7 wt. % to 3 wt. % of Si, 0.025 wt. % to 0.5 wt. % of C, and Fe as a balance. 
     
     
         3 . The method for preparing the high-temperature molten salt-based heat-resistant steel sheet for energy storage of  claim 1 , wherein the annealing is conducted at a temperature of 800° C.±20° C. for 60 min±20 min. 
     
     
         4 . The method for preparing the high-temperature molten salt-based heat-resistant steel sheet for energy storage of  claim 3 , wherein the temperature for the annealing is raised to 800° C.±20° C. at a heating rate of 10° C./min±2° C./min. 
     
     
         5 . The method for preparing the high-temperature molten salt-based heat-resistant steel sheet for energy storage of  claim 1 , wherein the cold rolling is conducted at a rolling speed of 0.4 m/min and a roller speed of 15 r/min.