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Explosion welding technique for combining multiple layers of brittle metal foils to become flat plate

A brittle metal, explosive welding technology, applied in welding equipment, metal processing equipment, non-electric welding equipment, etc., can solve the problem of material fragmentation and achieve the effect of manufacturing a wide range of materials

Inactive Publication Date: 2004-09-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These edge cracks will continue to propagate in the sheet, causing the material to splinter

Method used

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  • Explosion welding technique for combining multiple layers of brittle metal foils to become flat plate
  • Explosion welding technique for combining multiple layers of brittle metal foils to become flat plate
  • Explosion welding technique for combining multiple layers of brittle metal foils to become flat plate

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Using Fe with a thickness of about 25 μm and a bandwidth of 100 mm 78 B 13 Si 9 Iron-based amorphous alloy foil, elongation less than 2%, microhardness Hv=910Kg / mm 2 . Roll the amorphous alloy foil tightly on the core board 4 coated with a solder stop layer of 100×60×10 mm, a total of 120 layers, and the total thickness of the rolled multi-layer amorphous alloy foil 5 and the core board 4 is about 20mm , with a width of 65 mm and an average gap between amorphous foils of 10 μm. The doubler plate material is ordinary steel with a thickness of 1.75mm. The flat tube 7 is 75mm wide and 29.5mm high. The outer diameter of the semicircle section is Φ29.5mm. ~3.25mm. The thickness of the outer cloth explosive 2 is 37mm, and the detonation velocity is 4800m·s -1 . After the implementation of explosive welding, the semicircular parts at both ends and the edge were cut off by EDM, and two composite plates of 80×50×4.8mm were obtained, in which the consolidated Fe 78 B 13 ...

Embodiment 2

[0020] Except that talcum powder is coated on the inner surface of the doubler plate flat tube 7 as an anti-sticking layer, the same conditions as in Example 1 are adopted, after explosive welding and electric spark cutting, two pieces of 80×50×3mm Fe 78 B 13 Si 9 The amorphous block blank is reduced to a thickness of 2.2 mm after being ground by a grinder. X-ray diffraction confirms that it still remains amorphous and has no macroscopic cracks in appearance.

Embodiment 3

[0022] Using the same conditions as in Example 1, the inner surface of the flat tube 7 was coated with a talcum powder anti-adhesive layer, and a layer of 45 μm pure aluminum foil was added every 20 layers of amorphous alloy foil. After explosive welding and electric spark cutting, two pieces of 80×50×3.3mm Fe 78 B 13 Si 9 Composite material of amorphous alloy and aluminum foil.

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Abstract

An explosion welding technology for making multi-layer plate of crisp metal foils includes such steps as using two symmetrical complex plates to constitute a float tube with two semicurcular ends, fixing symmetrically the crips metal foil layers to the core plate in the center of said flat tube, filling explosive, exploding to form a flat tube of crisp metal foils, and cutting out the semicircular parts. It is suitable for the crisp metal foils with elongating percentage less than 5%.

Description

technical field [0001] The invention belongs to the technical field of explosive welding, and in particular relates to an explosive welding technique for consolidating multilayer brittle metal foils into flat plates. Background technique [0002] Multi-layer explosive welding has been used to manufacture various fiber-reinforced metal composite materials, such as stainless steel fiber-reinforced aluminum, tungsten fiber-reinforced titanium, etc. It is also used to manufacture multi-layer flexible cables, weld multi-layer amorphous alloy layers on metal surfaces, etc. . The multi-layer explosive welding of metal foil has its unique application background. A series of alloys produced by rapid quenching technology, such as amorphous alloys, metal quasicrystal materials, and metal microcrystalline materials, are mostly provided in the form of foil materials. , making them into consolidated blocks can expand the application fields of these materials. At the same time, tungsten ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/08
Inventor 李晓杰孙明阎鸿浩王金相董守华奚进一王宇新杨文彬
Owner DALIAN UNIV OF TECH
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