Production process for large-thickness explosive welding 09MnNiDR composite plate for ultralow-temperature pressure container

Abstract

The invention discloses a large-thickness explosive welding metal composite plate for an ultralow-temperature pressure container, and a production process, and relates to a process for S31603 and S30403 stainless steel plates, and a large-thickness explosive welding composite plate of 09MnNiDR steel plates for an ultralow-temperature pressure container. The invention provides a simple and convenient, economic, and practical method. The method comprises the following steps: laying prepared low-detonation-velocity explosives on a composite plate according to a design explosive height, and after the completion of the explosive laying, laying high-detonation-velocity explosives with a width of 30mm and a depth which is equal to the design height along long side parts, so as to control the detonation wave movement direction of the low-detonation-velocity explosives to be close to the rolling direction of a base plate, so that the corrugations of bonding interfaces of the composite plate are distributed along the rolling direction of the base plate, and the bonding strength of the bonding interfaces of the composite plate is reinforced. By virtue of a furnace-charge preheating, segmented spraying and rapid cooling process, the problem that the mechanical properties of the core part of the large-thickness explosive welding metal composite plate cannot meet design requirements is solved, and the needs of deep-cooling equipment manufacturing industry on large-thickness explosive welding metal composite plate are met.

Description

technical field [0001] The invention belongs to the field of explosively welded metal composite plate manufacturing, in particular to a production process of explosively welded 09MnNiDR composite plate for ultra-low temperature pressure vessels with large thickness. Background technique [0002] In recent years, with the in-depth development of industries such as petroleum, chemical industry, coal chemical industry, cryogenic pharmaceuticals, and nuclear power, explosively welded metal clad plates for large-scale chemical equipment used to manufacture cryogenic equipment and meet the needs of highly corrosive media have developed rapidly. The market There is also an increasing demand for explosively welded metal clad panels for large thickness, ultra-low temperature pressure vessels. Due to the special environment of these large pressure vessels and the complexity and variability of medium corrosion conditions, the requirements for various performance indicators of explosive...

AI Technical Summary

Problems solved by technology

Due to the special environment of these large pressure vessels and the complexity and variability of medium corrosion conditions, the requirements for various performance indicators of explosively welded metal clad plates for low temperature pressure vessels are becoming more and more stringent. Poor performance, the ability to refine the core grains by normalizing is limited, and it is generally difficult to ensure that the mechanical properties of the core meet the design requirements