Abstract: Aiming at the welding seam cracking and other defects that are prone to occur in the 310S stainless steel hood of a certain steel plant, analysis is conducted from the aspects of usage conditions, product characteristics, and the material physical properties of the hood-type furnace inner cover in this article. Through the product trial production, the technical points and parameters in key production steps such as cutting, rolling and welding are summarized, forming a set of key technologies suitable for producing the hood furnace cover. The set of technologies is of great significance for ensuring the quality of hood and improving its service life in harsh working environments.