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: 2002-03-06
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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
Comparison scheme
Effect test

Embodiment 1

[0017] 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 / m 2 . Roll the amorphous alloy foil tightly on the 100×60×10mm core board (4) coated with a solder stop layer, a total of 120 layers, the rolled multi-layer amorphous alloy foil (5) and the core board (4) The total thickness is about 20 mm, the width is 65 mm, and the average gap between the amorphous foils is 10 μm. The doubler board material is ordinary steel with a thickness of 1.75mm. The flat tube (7) made of it is 75mm wide and 29.5mm high. The outer diameter of the semicircular section is Φ29.5mm. The gap (6) is about 3-3.25mm. 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 ...

Embodiment 2

[0019] Except that talc 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 are obtained. 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

[0021] 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 Applications(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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