A kind of explosion welding method of super-thick clad metal clad plate

Abstract

The invention discloses an explosive welding method of a metal clad plate of a super-thick shroud plate. The explosive welding method comprises the following steps of 1) pretreating substrate and shroud plate blanks; 2) arranging an extension plate at the periphery of the shroud plate; 3) arranging a substrate and the shroud plate; 4) laying main charge and auxiliary charge; 5) producing and arranging a priming device; 6) carrying out explosive welding. According to the explosive welding method, the welded rate of the clad plate welded through the process reaches 100%, the bonding strength of a welding surface conforms to a strength rule of duplex metal solid phase metallurgical bonding, a bonding interface of the welding surface is in a shape like a micro-wave with excellent quality, the impurity content of the interface is not higher than the corresponding impurity content of raw materials, and the welding quality requirements on the clad plate are completely met.

Description

technical field

[0001] The invention belongs to the technical field of explosive welding, and in particular relates to an explosive welding method of an ultra-thick clad metal composite plate. Background technique

[0002] The large-area metallurgical bonding and connection of super-thick metal sheets has a large demand in some special fields. At present, for the large-area metallurgical bonding and connection of such metal sheets, the hot isostatic pressing method is generally used, which requires huge equipment, complicated processes, and high costs. For the explosive welding method with a cladding thickness greater than 25mm, there has been no elaboration in the published literature so far. Contents of the invention

[0003] Purpose of the invention: Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an explosive welding method for super-thick clad metal clad plates, break through the limitations of the existing explosive we...

Examples

Embodiment 1

[0053] The material of the blank plate used in this embodiment is Q345R, the specification of the base plate: length 880mm, width 280mm, thickness 50mm; specification of cladding plate: length 880mm, width 280mm, thickness 50mm.

[0054] A kind of explosive welding method of the metal clad plate of ultra-thick clad plate, comprises the following steps:

[0055] (1) Blank pretreatment

[0056] Through the process of leveling, grinding, polishing and cleaning, etc., the rust and oxide on the surface of the blank plate are removed. The roughness of the blank plate is less than 3mm / m, and the roughness of the surface to be bonded is less than 50μm;

[0057] (2) Install extension board

[0058] Spreading plates are set around the cladding plate as tooling for explosive welding.

[0059] The expansion plate generally uses metal materials that are relatively cheap and easy to form welding with the cladding plate. The expansion plate and the cladding plate are generally groove welde...

Embodiment 2

[0153] The material of the blank plate in this embodiment is Q345R, the specification of the substrate: length 880mm, width 280mm, thickness 35mm; specification of cladding plate: length 880mm, width 280mm, thickness 35mm.

[0154] (1) Blank pretreatment:

[0155] Through the processes of leveling, grinding, polishing and cleaning, etc., the rust and oxides on the surface of the blank plate are removed. The roughness of the blank plate is 2.8mm / m, and the roughness of the surface to be bonded is less than 50μm;

[0156] (2) charge

[0157] The explosives placed directly above the cladding plate are the main charge, and the explosives placed above the extension plate are the auxiliary charges. The main charge adopts the "plane + wave" distributing method; the auxiliary charge at the initiation end adopts the "slope (upward)" distributing method, the auxiliary charges on both sides adopt the "mountain-shaped" distributing method, and the auxiliary charge at the end adopts the "...

technical field

[0001] The invention belongs to the technical field of explosive welding, and in particular relates to an explosive welding method of an ultra-thick clad metal composite plate. Background technique

[0002] The large-area metallurgical bonding and connection of super-thick metal sheets has a large demand in some special fields. At present, for the large-area metallurgical bonding and connection of such metal sheets, the hot isostatic pressing method is generally used, which requires huge equipment, complicated processes, and high costs. For the explosive welding method with a cladding thickness greater than 25mm, there has been no elaboration in the published literature so far. Contents of the invention

[0003] Purpose of the invention: Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an explosive welding method for super-thick clad metal clad plates, break through the limitations of the existing explosive we...

Examples

Embodiment 1

[0053] The material of the blank plate used in this embodiment is Q345R, the specification of the base plate: length 880mm, width 280mm, thickness 50mm; specification of cladding plate: length 880mm, width 280mm, thickness 50mm.

[0054] A kind of explosive welding method of the metal clad plate of ultra-thick clad plate, comprises the following steps:

[0055] (1) Blank pretreatment

[0056] Through the process of leveling, grinding, polishing and cleaning, etc., the rust and oxide on the surface of the blank plate are removed. The roughness of the blank plate is less than 3mm / m, and the roughness of the surface to be bonded is less than 50μm;

[0057] (2) Install extension board

[0058] Spreading plates are set around the cladding plate as tooling for explosive welding.

[0059] The expansion plate generally uses metal materials that are relatively cheap and easy to form welding with the cladding plate. The expansion plate and the cladding plate are generally groove welde...

Embodiment 2

[0153] The material of the blank plate in this embodiment is Q345R, the specification of the substrate: length 880mm, width 280mm, thickness 35mm; specification of cladding plate: length 880mm, width 280mm, thickness 35mm.

[0154] (1) Blank pretreatment:

[0155] Through the processes of leveling, grinding, polishing and cleaning, etc., the rust and oxides on the surface of the blank plate are removed. The roughness of the blank plate is 2.8mm / m, and the roughness of the surface to be bonded is less than 50μm;

[0156] (2) charge

[0157] The explosives placed directly above the cladding plate are the main charge, and the explosives placed above the extension plate are the auxiliary charges. The main charge adopts the "plane + wave" distributing method; the auxiliary charge at the initiation end adopts the "slope (upward)" distributing method, the auxiliary charges on both sides adopt the "mountain-shaped" distributing method, and the auxiliary charge at the end adopts the "...

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