Process for welding bodies made of extremely hard or highly hardened armored steel, in particular for preventing the penetration of projectiles, missiles, fragments or the like. Objects to be armored and welded construction made using this method

摘要

A method for welding bodies made of very hard or highly refined armor steel, particularly objects to be armored against the penetration of projectiles, flying bodies, splinters or the like, wherein armor steel bodies arranged in juxtaposition with a gap therebetween are provided, in the region of the root of the joint, with preferably one bar each, and/or a filler body of, in particular, an unalloyed steel is arranged in the joint so as to cover the joint gap. The armor steel bodies are welded together without preheating with a suitable ferritic welding material, of like base, under a protective gas atmosphere and after cooling of the weld seam from the welding heat to not less than 100 DEG C., the weld seam is heated locally and progressively without any holding period to at least 450 DEG C. and subsequently, without maintaining a certain ambient temperature and/or period of time, the weld seam is cooled to ambient temperature in air. Alternatively, a like-base layer of armor is locally applied onto a wall of armor steel from a suitable ferritic welding material in that the welding area, which has been cooled from the welding heat to no less than 100 DEG C., is heated locally and progressively without any holding period to at least 450 DEG C., and subsequently the weld region is cooled in air without maintaining a certain time period and only the last (uppermost) welded layer of the weld region is again locally reheated, before being cooled from the welding heat to below 100 DEG C., at least 450 DEG C. without holding period and subsequently again cooled in air to ambient temperature without maintaining a cetain time period and or temperature.