Explosive welding method for extra-thick plate

Abstract

The invention provides an explosive welding method for an extra-thick plate. The explosive welding method for the extra-thick plate is applied to a steel plate with the thickness of a coating plate being 25-30 mm and the thickness of a substrate being 30-115 mm. The explosive welding method for the extra-thick plate is characterized by comprising the following steps that a coating prefabricated crack is formed; detonating points are prefabricated; the coating plate is arranged on the upper portion, the steel plate serves as the substrate on the lower portion, the coating plate and the substrate are installed and arranged in parallel through supporting pads at four corners at the edges, and the height of a supporting gap is 1.2-1.8 times the thickness of the coating plate; the coating prefabricated crack is aligned with the edge of the substrate; the requirement for even application and distribution of high voltage pulse loads of the whole plate is met; emulsion explosives are evenly arranged on the surface of the coating plate, the explosion speed is 2200-3200 mm / s, a plane wave generator is arranged along the prefabricated detonating points, the explosion speed is 4000-4500 mm / s, and an energy-gathered igniting primer is located in the middle of the edge of the coating plate; and after explosive cladding, through heat treatment and flattening, by means of explosive cladding primary forming, the attaching rate reaches 100%, and the minimum shear strength [tau]b>=210 Mpa.

Description

technical field [0001] The invention relates to an explosive welding method for ultra-thick clad metal composite plates, belonging to the field of metal composite plate manufacturing. Background technique [0002] Metal composite panels are currently widely used in petroleum, chemical, pharmaceutical, shipbuilding, electric power, metallurgy and other industries. With the continuous development of material science and equipment manufacturing technology, the application fields of metal composite panels are becoming more and more extensive. Some special requirements ( Such as large-scale machine tool slides, large-span conductive copper bars, etc.), the cladding of the composite board to be used is thicker, up to 25-30mm; while the thickness of the substrate is 30-115mm, such a combination of metal composite boards cannot be welded by conventional explosive welding methods. Complete high-quality products. Contents of the invention [0003] The problem solved by the present ...

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Problems solved by technology

[0002] Metal composite panels are currently widely used in petroleum, chemical, pharmaceutical, shipbuilding, electric power, metallurgy and other industries. With the continuous development of material science and equipment manufacturing technology, the application fields of metal composite panels are becoming more and more extensive. Some special requirements ( Such as large-scale machine tool slides, large-span conductive copper bars, etc.), the cladding of the composite board to be used is thicker, reaching 25-30mm; while the thickness of the substrate is 30-115mm, such a combination of metal composite boards cannot be welded by conventional explosive welding methods. Complete high-quality products

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