Blasting apparatus, blasting method and retainer member used for the blasting method
AssigneeHitachi Zosen Corporation
InventorsHiroaki Arai, Hidehiko Maehata, Tetsuya Inoue, Daisuke Tamakoshi, Tsuyoshi Kato
Life of this patent
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Abstract
Supplying a predetermined amount of electric energy to a fine metal wire 4 in a short time causes the fine metal wire 4 to melt and evaporate. Following this phenomenon, a blasting substance 10 expands in volume, so that the evaporative expansion force resulting from the melting evaporation of the fine metal wire 4 is transmitted to and blasts a to-be-blasted object 5.
Claims10
A blasting method for blasting a to-be-blasted object by supplying electric energy to a fine metal wire for a short time so as to rapidly melt and evaporate the fine metal wire, comprising:
- retaining the fine metal wire in a recess formed on the surface of a retaining member;
- and
- placing the recess to oppose the surface of a blasting part of the to-be-blasted object in order for blasting the to-be-blasted object.
A retainer member for a fine metal wire used in the blasting method for blasting a to-be-blasted object by supplying electric energy to the fine metal wire for a short time so as to rapidly melt and evaporate the fine metal wire, comprising:
- a groove capable of guiding the fine metal wire and formed on the surface opposing the to-be-blasted object;
- and
- a recess capable of filling a liquid or semi-solid substance therein and formed on the same surface.
A blasting method for blasting a to-be-blasted object by supplying electric energy to a fine metal wire for a short time so as to rapidly melt and evaporate the fine metal wire, comprising:
- retaining the fine metal wire in a groove formed on the surface of a retaining member;
- and
- supplying a liquid or semi-solid substance into a space between the surface of the retainer member and the surface of a blasting part of the to-be-blasted object at the time of blasting the object by placing the fine metal wire retained in the groove on the surface of the blasting part of the object.
A blasting method comprising the steps of:
- fixing a fine metal wire to the press surface of a press member, said fine metal wire being melted and evaporated by supplying electric energy thereto for a short time;
- applying a blasting substance, said blasting substance comprising at least one of mortar, mud, silicon and jelly, to the surface of the blasting part of a to-be-blasted object, said blasting substance rapidly expanding in volume according as the fine metal wire melts and evaporates;
- and
- supplying electric energy to the fine metal wire for a short time while the fine metal wire is pressed against the surface of the to-be-blasted object by means of the press member.
A blasting method comprising the steps of:
- pressing a blasting vessel against the surface of a to-be-blasted object by means of a press member with a fine metal wire being sealed in the blasting vessel filled with a blasting substance, said fine metal wire being to be connected to a power source;
- supplying electric energy to the fine metal wire for a short time to cause the fine metal wire to melt and evaporate into evaporative expansion;
- and
- transmitting the evaporative expansion force of the fine metal wire through the blasting substance to accomplish the blasting of the to-be-blasted object.
Dependencies are inferred from the claim text.