Assembling method of low-energy exploding foil initiator

An assembly method and technology of explosive foil, applied in the direction of blasting barrels, weapon accessories, offensive equipment, etc., can solve the problems of volume substrate processing and assembly difficulty, high integration, etc., and achieve volume reduction, high integration, and small volume Effect

Inactive Publication Date: 2017-10-10
苏州亿禾永利新能源有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Correspondingly, higher integration and smaller volume requirements pose more difficult challenges to the substrate processing and assembly of LEEFIs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for assembling a low-energy detonating foil detonator, the detonating unit of the detonating foil detonator comprises a ceramic substrate, a metal Ti / Cu layer, a PC layer, an upper electrode Ti / W / Ti / Cu / Au, and a Schottky diode And Su8 acceleration bore, it is characterized in that its assembly method comprises the steps of following order:

[0018] (1) Pre-assembly preparation of the PCB board: smooth the surrounding area of ​​the prefabricated PCB board with sandpaper, and rinse it with a Freon cleaning machine. The washing steps are Freon spraying for 1 minute, hot steaming for 3 minutes, and spraying for 1 minute;

[0019] (2) Adhesive substrate: Use XXX type single-component insulating adhesive to bond the processed substrate to a suitable position on the PCB board and cure it. The curing conditions are: temperature 150°C, time 60 minutes;

[0020] (3) Bonding Schottky diodes: Use XXX type two-component conductive adhesive to reversely bond Schottky diodes ...

Embodiment 2

[0025] A method for assembling a low-energy detonating foil detonator, the detonating unit of the detonating foil detonator comprises a ceramic substrate, a metal Ti / Cu layer, a PI layer, an upper electrode Ti / W / Ti / Cu / Au, and a Schottky diode and Su8 accelerated bore, characterized in that it comprises the steps in the following order:

[0026] (1) Preparation before assembly of the PCB board: sand the prefabricated PCB board around it smooth with sandpaper, and rinse it with a Freon cleaning machine. The washing steps are Freon spraying for 1 minute, hot steaming for 1 minute, and spraying for 1 minute;

[0027] (2) Adhesive substrate: Use XXX type single-component insulating adhesive to bond the processed substrate to a suitable position on the PCB board and cure it. The curing conditions are: temperature 145°C, time 70 minutes;

[0028] (3) Adhesive Schottky diode: use XXX type two-component conductive adhesive to reversely bond the Schottky diode to the upper electrode Ti / ...

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Abstract

A method for assembling a low-energy explosive foil detonator, the detonating unit includes a ceramic substrate, a composite metal film layer, an insulating layer, an upper electrode Ti/W/Ti/Cu/Au, a Schottky secondary tube or a high-pressure tube and an accelerating chamber , is characterized in that comprising the steps of the following sequence: (1) PCB board grinding, cleaning; (2) using insulating glue to bond the processed substrate to a suitable position on the PCB board and curing; (3) using conductive glue to The Schottky diode is reversely bonded on the upper electrode Ti/W/Ti/Cu/Au or the high-voltage tube is bonded on the upper electrode Ti/W/Ti/Cu/Au with conductive adhesive and cured; (4) use Aluminum strip wedge welding connects the Schottky diode and PCB pad; (5) Use copper strip manual welding to connect the upper electrode and PCB pad. The method adopts thin-film technology, which has high precision and high integration, and the prepared detonation system is smaller in size, safer and more reliable; and the impedance of the detonation circuit is reduced, and the ignition energy of the detonation system is low; moreover, independent components can be reworked many times Realize multiple uses of exploding foil experiment samples.

Description

technical field [0001] The invention relates to a preparation method of an explosive foil detonator, in particular to an assembly method of a low-energy explosive foil detonator. Background technique [0002] The Exploding Foil Initiator (EFI) is an in-line pyrotechnic device with high reliability and high safety, which is mainly used for detonation of explosive charge and ignition of solid rocket motor propellant. The basic structure of EFI mainly includes two parts: pulse power unit and explosive foil initiation unit. The pulse power unit mainly includes high-voltage power supply, capacitor, high-voltage switch, flat cable and control circuit; the explosive foil detonating unit mainly includes substrate, explosive foil, polymer flyer, accelerating chamber and insensitive explosive. EFI breaks through the limitations of sensitive priming agents and loose explosives in traditional detonators. Explosive foils do not come into direct contact with explosives. They are resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B3/198
CPCF42B3/198
Inventor 陈舟胡军峰章海侠
Owner 苏州亿禾永利新能源有限公司
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