Explosive welding method of arranging multiple reinforcing ribs between large-area double-layer steel plates

Abstract

The invention discloses an explosive welding method of arranging multiple reinforcing ribs between large-area double-layer steel plates. The explosive welding method comprises the following steps of first-stage explosive welding: respectively fixing a die plate I, a die plate II and the reinforcing ribs on a base plate in a spot welding way, putting gap posts on the die plate I, putting an upper panel on the gap posts, arranging explosive on the upper surface of the upper panel, and carrying out the explosive welding; and second-stage explosive welding: overturning welded object obtained in the first stage, taking away the die plate I and the die plate II, filling a die plate III, covering the die plate I on the die plate III, putting the gap posts on the die plate I, putting a lower panel on the gap posts, arranging explosive on the upper surface of the lower panel, and carrying out the explosive welding. According to the explosive welding method disclosed by the invention, compared with the explosive loading amount adopted in an engineering practice in the past, the explosive loading amount is saved by about 18%; a boundary effect subduction method, which refers to a method of additionally arranging lengthened plates at two ends of a cover plate along a detonation spread direction, is adopted; and the explosive using amount is reduced, the welding rate is up to 100%, the strength of a combination interface exceeds that of base material, and the explosive method has the advantage of manufacturing large-area reinforcing rib double-layer steel structural components in good quality and low price.

Description

technical field [0001] The invention relates to an explosive welding method, in particular to an explosive welding method in which a plurality of reinforcing ribs are arranged between large-area double-layer steel plates. Background technique [0002] Such as figure 1 As shown, the large-area rib-reinforced steel structure consists of an upper panel 1, a lower panel 2 and a plurality of reinforcing ribs 3. Among them, the reinforcing rib not only plays a reinforcing role, but also needs to form a cavity with excellent airtight performance between the plate and the rib. Using conventional electric welding methods to process such steel structures has the following problems: Although high-quality welds can be formed between the upper panel 1 and the reinforcing ribs 3, it is difficult to achieve surface-to-surface welding between the two. Due to the limited operating space, only the plug welding process can be used between the lower panel 2 and the reinforcing rib 3 , and ...

AI Technical Summary

Problems solved by technology

Using conventional electric welding methods to process such steel structures has the following problems: Although high-quality welds can be formed between the upper panel 1 and the rib 3, it is difficult to achieve surface-to-surface welding between the two

Due to the limited operating space, only the plug welding process can be used between the lower panel 2 and the rib 3, and its bonding strength is still lower than that of the upper panel 1 and the rib 3

③ A cavity with excellent airtight performance cannot be formed between the two ribs and the upper and lower panels

Therefore, the explosive welding of such steel components is recognized as one of the most complicated and difficult problems in the field of explosive welding. So far, no successful cases of explosive welding of such steel components have been reported at home and abroad.

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