Kobe Steel, Ltd.

Nakaba Tsutsui

Ryusuke Kitamura

Kenji Koide

Kiyoshi Asahina

Hideaki Shimoda

Takashi Gotou

Ryo Shimoike

Hisamitsu Shimoyama

Yoshitaka Yamane

Provided is a method for cleaning the inside of a pressure tight container for a blasting treatment, wherein the inside of a pressure tight container can be cleaned for a short period of time after a blasting treatment. The method is comprised of a setting process wherein a cleaning blast () capable of cracking a part of a residual substance remaining on the inside of a pressure tight container (), and a solid separating material () which collides with a substance bonded to an inner wall surface () of the pressure tight container (), to separate the bonded substance from the inner wall surface () of the pressure tight container (), are set on the inside of the pressure tight container (); and a separation process wherein the cleaning blast () blasts on the inside of the pressure tight container (), to crack a part of the residual substance remaining on the inside of the pressure tight container (), and the separating material () is divided into a plurality of granular elements by the blast, so that the granular elements are spread, and collide with the bonded substance to remove the bonded substance.

Method for cleaning inside of pressure tight container for blasting treatment

A blast treatment method enables easy and safe blast treatment of ammunition having propellant provided with a warhead having a bursting charge and a propulsion unit having a propellant. Comprised are a first explosive arrangement step of arranging a first explosiveon the outside of a warhead; a second explosive arrangement step of arranging a plurality of explosive membersincluding a second explosiveon the outside of the propulsion unit; a warhead blast step of causing detonation of a bursting chargeby detonation of a first explosive, thereby blasting the warheadand a propulsion unit treatment step of causing deflagration of a propellantby detonation of the second explosive, thereby performing combustion of the propulsion unit; the first explosiveis arranged at a position covering the periphery of the warhead, a high-pressure field is generated on the periphery of the warheadby detonation of this first explosive, and by means of this high-pressure field, divergence of detonation energy of the bursting chargeto outside this high-pressure field is suppressed, and moreover the explosive membersare arranged at mutually separated positions whereby divergence of the combustion energy of the propellantto the outside from the explosive membersis allowed, by which detonation of the propellantis suppressed.

Blast treatment method and blast treatment device

A blast treatment method and an apparatus, which can perform the blast treatment of a treatment subject by using and securely initiating a blasting explosive having fluidity. The blast treatment method includes: a blasting preparation operation of housing a blasting explosive having fluidity in a container and placing the blasting explosive around a treatment subject as well as attaching an initiation device to the container; a housing operation of housing the container, the blasting explosive, and the treatment subject in a chamber; a decompression operation of decompressing the inside of the chamber; and a blasting operation of initiating the blasting explosive and blasting the treatment subject with the blasting explosive. In the decompression operation, the inside of the chamber is decompressed while a gas vent portion regulates the escape of the blasting explosive to the outside of the container and permits the escape of gases in the container to the outside.

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Kobe, Japan

Nakaba Tsutsui