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Novel neon gas protection explosive welding method and explosive welding structure

An explosive welding and neon gas technology, which is applied in the field of neon gas-protected new explosive welding method and explosive welding structure, can solve the problems of delamination fracture and cracking of welded workpieces, so as to avoid interface melting, reduce the risk of cracking, and improve The effect of weld strength

Pending Publication Date: 2021-07-09
郑州宇光复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a novel explosive welding method protected by neon gas, so as to solve the problem in the prior art that the welding workpiece is prone to cracking, delamination and fracture due to the high content of brittle products in the welding process of the clad layer being an active metal. technical problem

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  • Novel neon gas protection explosive welding method and explosive welding structure
  • Novel neon gas protection explosive welding method and explosive welding structure
  • Novel neon gas protection explosive welding method and explosive welding structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: a kind of neon gas protection novel explosive welding method comprises the steps:

[0039] S1 Cleaning: Clean the surface of the substrate and the double board to be bonded respectively;

[0040] S2 Assembly: Assemble the base plate and double plate cleaned in step S1 according to the principle of “the base plate is on the bottom, the double plate is on the top, and the surface to be welded is opposite”, and a gap support is placed between the base plate and the double plate. The base plate is carbon steel, Stainless steel or nickel-based alloy; double plate is one or more of titanium, zirconium, tantalum, niobium, aluminum, magnesium;

[0041] S3 dispensing medicine and detonator: arrange medicine and detonator on the upper surface of the doubler board;

[0042] Preparation of S4 welded closed space: Use aluminum-plastic hot-melt film to seal the assembled substrate and double board of S3 to form a closed space, and reserve air extraction / inflation ports...

Embodiment 2

[0051] Embodiment 2: a kind of neon gas protection novel explosive welding method, comprises the steps:

[0052] S1 Cleaning: Clean the surface of the substrate and the double board to be bonded respectively;

[0053] S2 Assembly: Assemble the base plate and double plate cleaned in step S1 according to the principle of “the base plate is on the bottom, the double plate is on the top, and the surface to be welded is opposite”, and a gap support is placed between the base plate and the double plate, wherein the base plate is carbon steel; Double plate is titanium, zirconium alloy;

[0054] S3 dispensing medicine and detonator: arrange medicine and detonator on the upper surface of the doubler board;

[0055] Preparation of S4 welded closed space: Use aluminum-plastic hot-melt film to seal the assembled substrate and double board of S3 to form a closed space, and reserve air extraction / inflation ports, gas composition / pressure detection at diagonal positions Mouth; Aluminum-pla...

Embodiment 3

[0064] Embodiment 3: a kind of neon gas protection novel explosive welding method comprises the following steps:

[0065] (1) Before performing explosive welding, it is necessary to clean up the oxide skin on the surface of the base plate and the double plate to be combined. Usually, the surface of ordinary steel plate is polished with 80-mesh impeller; the surface of titanium, zirconium, tantalum, and niobium is polished with 40-mesh impeller. , to prevent metal surface oxidation; aluminum and magnesium plates are treated with stainless steel wire wheels. During the polishing process, the compression strength is not higher than 0.4MPa to prevent metal surface oxidation and severe scratches on the surface.

[0066] (2) Preparation of closed space for explosive welding: the closed space is composed of aluminum-plastic hot-melt film, which is divided into upper and lower pieces; after leveling the site for explosive welding, lay the lower aluminum-plastic hot-melt film on the gr...

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Abstract

The invention discloses a novel neon gas protection explosive welding method. The novel neon gas protection explosive welding method comprises the following steps that S1, cleaning is conducted, specifically, the to-be-combined surfaces of a base plate and a compound plate are cleaned up; S2, assembling is conducted, specifically, the base plate and the compound plate which are cleaned up in the step S1 are assembled according to the principle that the base plate is located on the lower portion, the compound plate is located on the upper portion, and the to-be-welded surfaces are opposite, and a gap support is placed between the base plate and the compound plate; S3, explosive and detonator distribution is conducted, specifically, an explosive and a detonator are distributed on the upper surface of the compound plate; S4, a welding closed space is prepared, specifically, the base plate and the compound plate which are assembled in the step S3 are sealed through an aluminum-plastic hot melt film, and an air exhaust / inflation port and a gas component / pressure detection port are reserved in the diagonal positions; S5, neon gas is inflated, specifically, air in the closed space in the step S4 is exhausted, and the neon gas is inflated; and S6, explosive welding is conducted, specifically, the explosive is detonated through the detonator, and explosive welding is conducted. The situation that metal jet flow reacts with atmospheric components, and consequently brittle products are generated can be effectively avoided and weakened, the interface bonding quality is improved, and the welding strength is improved.

Description

technical field [0001] The invention relates to the technical field of explosive welding, in particular to a novel explosive welding method protected by neon gas and an explosive welding structure. Background technique [0002] The energy of explosive welding comes from low-detonation-velocity explosives, and the rapid expansion of explosive products generated by the explosion of explosives drives the doubler plate to move downward at high speed until it collides obliquely with the substrate. At the same time, under the joint action of high pressure, large deformation, high-speed adiabatic deformation and high temperature generated by high-pressure compression, the metal body at the back of the jet produces solid-phase diffusion and fusion welding. [0003] The explosive welding process does not require large-scale equipment, and the energy comes from special low-detonation velocity explosives, whose detonation velocity is between 1800 and 2200m / s, so it also determines that...

Claims

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Application Information

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IPC IPC(8): B23K20/08B23K20/24
CPCB23K20/08B23K20/24
Inventor 杨宇军夏金民黄志鸽
Owner 郑州宇光复合材料有限公司
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