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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

Provided is an assembling method of a low-energy exploding foil initiator. A detonating unit comprises a ceramic substrate, a composite metal film layer, an insulating layer, an upper electrode Ti / W / Ti / Cu / Au, a Schottky diode or a high-pressure pipe and an accelerating chamber. The assembling method is characterized by including the following steps that 1, a PCB is ground and cleaned; 2, the processed substrate is bonded to an appropriate position of the PCB by adopting an insulation paste and is cured; 3, the Schottky diode is reversely bonded to the upper electrode Ti / W / Ti / Cu / Au or the high-pressure pipe is bonded to the high-pressure pipe by adopting the insulation paste and is cured; 4, the Schottky diode and a PCB bonding pad are connected through aluminum strip wedge bonding; 5, the upper electrode and the PCB bonding pad are connected through copper strip hand welding. The method adopts a thin film process, the precision and integration level are high, a manufactured detonating system is smaller in size and is safer and more reliable, the impedance of a detonating circuit is reduced, firing energy of the detonating system is low, and independent components and parts can be reworked multiple times to achieve multiple times of use 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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