A Method for Improving the Weldability of Explosive Welding of Large Thickness and High Strength Alloys

Abstract

The invention discloses a method capable of improving the explosive welding weldability of a large-thickness high-strength alloy. A substrate and a flying plate which can be subjected to heat treatment and enhanced obviously are subjected to explosive welding; the lower limit of an explosive welding window can be effectively reduced through a soft section, the problems that when the large-thickness high-strength alloy is directly used for explosive welding, the welding window is small, and the upper limit of explosive welding is reduced are solved, and weldability is enhanced; and by means of flying plate deformation in the explosive welding process, the heat treatment temperature can be reduced, the precipitation process can be effectively promoted, and the high performance can be easily obtained in the subsequent heat treatment process. In addition, if the soft flying plate is used, the torque needing to be overcome is small, in the explosive welding process, under the same requirement for the collision speed, the explosive load required by the soft flying plate is small obviously, and therefore the explosive usage quantity required in the explosive welding process is small, and greater environment protection is achieved. The performance of a composite obtained after explosive welding can be continuously adjusted within the required range according to the service conditions and the usage requirements.

Description

【Technical field】 [0001] The invention belongs to the field of explosive welding and relates to a method capable of improving the weldability of large-thickness and high-strength alloys in explosive welding. 【Background technique】 [0002] In 1944, Carl observed that two pieces of brass were connected together due to the impact of explosives in an explosive explosion, thus proposing the concept of explosive welding, which was successfully applied in industrial production by American Phillpchuk in the 1960s . Explosive welding can realize a wide range of connections between the same or different metals, or even between non-metals and metals, and has good flexibility (while achieving large areas and layers), and the strength of excellent welded joints can exceed that of the base metal. Due to its strong strength, it has been widely used in chemical industry, military, nuclear industry and other fields. [0003] Theoretically speaking, the area that can be welded by explosive...

AI Technical Summary

Problems solved by technology

In these new application scenarios and requirements, the implementation of explosive welding not only requires the connection of high-performance large-size plates, but also requires the adaptability of high-performance plates with ultra-large thickness (such as 20mm thick high-performance copper alloy). However, in Under the ordinary explosive welding process, the increase of the thickness of the flying plate usually faces a decrease in the upper limit of the welding parameter window, which reduces the weldability, and faces the increase of the bending moment that needs to be overcome by the explosive welding, the amount of medicine is large, and the implementation is difficult. Therefore, it needs to be explored. Improve and specially design the implementation method of explosive welding for some specific combination materials to enhance the application ability of explosive welding in some special fields

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