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Explosive welding method for pre-processing rare and precious metal composite plate through severe surface deformation

A rare and precious metal, explosive welding technology, applied in welding equipment, metal processing equipment, welding/welding/cutting items, etc., can solve the problems of low interface strength and easy defects, and achieve improved interface bonding strength, low cost, and production safe effect

Active Publication Date: 2016-03-16
NANJING INST OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide an explosive welding method for pretreatment of rare and precious metal clad plates with severe surface deformation, and to solve the technical problem that the joint interface strength of the clad plates by explosive welding is low and prone to defects in the prior art

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  • Explosive welding method for pre-processing rare and precious metal composite plate through severe surface deformation

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The Q275 steel plate with a size of 1700mm×850mm×25mm was selected as the base material, and the TC4 titanium alloy plate with a size of 1780mm×900mm×6mm was selected as the composite material, and the explosive welding composite experiment of surface severe deformation pretreatment was carried out by shot blasting method.

[0043] First clean the connecting surface of the base material and the composite material, and use an abrasive belt grinder to perform rough grinding (20 mesh abrasive belt) and fine grinding (120 mesh abrasive belt) on the connecting surface of the Q275 steel plate and the TC4 titanium alloy plate respectively. Remove surface rust or oxide, etc., and then etch the surface with dilute nitric acid solution to eliminate the hardened layer on the connecting surface, and then rinse with water; then perform shot peening treatment on the surface of Q275 steel plate and TC4 titanium alloy plate respectively. The shot peening process parameters are , the dia...

Embodiment 2

[0045] A TU1 copper plate with a size of 1000mm×550mm×20mm was selected as the base material, and a pure tungsten plate with a size of 1100mm×600mm×10mm was selected as the composite material, and the explosive welding composite experiment of surface severe deformation pretreatment was carried out by mechanical grinding method.

[0046] First clean the connection surface of the base material and the composite material, and then use an abrasive belt grinder to perform rough grinding (20 mesh belt) and fine grinding (120 mesh sand) on the connection surface of the base material TU1 copper plate and the composite pure tungsten plate respectively. Strip), remove surface rust or oxide, etc., and then etch the surface with dilute hydrochloric acid solution to eliminate the hardened layer on the connecting surface, and then rinse with water; then mechanically grind the TU1 copper plate and pure tungsten plate that have been pre-cleaned on the surface The processing and grinding proces...

Embodiment 3

[0048] The 0Cr13 stainless steel plate with a size of 1200mm×600mm×15mm was selected as the base material, and the pure zirconium plate with a size of 1300mm×650mm×5mm was used as the composite material. Sand blasting and mechanical impact methods were used to carry out the explosive welding composite experiment of surface severe deformation pretreatment.

[0049] First clean the connecting surface of the base material and the composite material, and use an abrasive belt grinder to perform rough grinding (20 mesh belt) and fine grinding (120 mesh belt) on the connecting surface of the base material 0Cr13 stainless steel plate and the pure zirconium plate respectively. ), remove surface rust or oxide, etc., and then etch the surface with dilute nitric acid solution to eliminate the connecting surface hardening layer, and then rinse with water; then sandblast and clean the 0Cr13 stainless steel plate and pure zirconium plate with Mechanical impact treatment, sandblasting process ...

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Abstract

The invention provides an explosive welding method for pre-processing a rare and precious metal composite plate through severe surface deformation. The method includes the following steps that a base material and a composite material are determined, a connecting face of the base material and the composite material is cleaned and processed, severe deformation processing is performed on the connecting face, the connecting face is baked, roughness processing is performed on the connecting face, leveling processing of the connecting face is performed, and explosion welding and cladding and follow-up repair welding, leveling, edge cutting and mechanical polishing are performed, wherein a severe deformation processing method includes rolling, mechanical grinding, mechanical impacting, shot blasting or sand blasting. Before explosive cladding, the severe surface deformation processing is performed on the base material and the composite material, the connecting face can be of a multi-stage micro structure in different sizes, and the defect that cracks and the like happen easily in the explosive cladding process of rare and precious metal can be reduced; and besides, the severe surface deformation induces a large number of crystal structure defects, intermetallic compounds can be reduced, and the interface binding strength is remarkably improved.

Description

technical field [0001] The invention relates to an explosive welding method of a rare and precious metal composite plate, in particular to an explosive welding preparation method of a rare and precious metal composite plate subjected to severe surface deformation pretreatment, and belongs to the technical field of metal composite plate manufacturing. Background technique [0002] Explosive compounding is a kind of metal processing technology that uses explosives as the energy source, and the clad metal collides with the base metal at a high speed under the action of the explosive load. After forming a molten metal layer at the collision point, it is rapidly cooled and instantly connected together by metallurgical methods. , which is suitable for the combined connection between compatible metals, non-compatible metals, metals with large differences in melting points, metals with large differences in thermal expansion coefficients, and metals with large differences in hardness....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08B23K20/24
CPCB23K20/08B23K20/24B23K2103/18
Inventor 毛向阳王章忠邓家爱周景蓉巴志新张保森白允强黄雪
Owner NANJING INST OF TECH
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