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Method and Apparatus for Freeze Forming and Piercing

IP.com Disclosure Number: IPCOM000093650D
Original Publication Date: 1967-Nov-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Wood, AH: AUTHOR

Abstract

The expansion properties of water or other liquids capable of freezing are used to produce holes of any size and configuration in any material such as metal, plastic, uncured ceramic, and other difficult to pierce and form soft materials. The apparatus comprises chamber 10, devices for holding a sheet of material 11, which is to be pierced between template 12 and die 13, and threaded holding cap 14. Sheet 11 to be pierced is sandwiched between template 12 and die 13 which must be in alignment with each other.

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Method and Apparatus for Freeze Forming and Piercing

The expansion properties of water or other liquids capable of freezing are used to produce holes of any size and configuration in any material such as metal, plastic, uncured ceramic, and other difficult to pierce and form soft materials. The apparatus comprises chamber 10, devices for holding a sheet of material 11, which is to be pierced between template 12 and die 13, and threaded holding cap 14. Sheet 11 to be pierced is sandwiched between template 12 and die 13 which must be in alignment with each other.

Chamber 10 is then filled with freezable liquid 15 introduced into chamber 10 through pluggable hole 16. Liquid 15 is then cooled. Subsequent expansion of liquid 15 due to a change to its solid state within chamber 10 produces a pressure causing holes to be introduced into material 11 in accordance with the pattern of template 12 and die 13.

The method and apparatus lends itself to various arrangements such as change in the volume of liquid introduced into chamber 10 so as to produce greater or lesser pressures, the use of heat concentration devices to slow the freezing in particular or predetermined sections of the die, devices to rapidly freeze predetermined sections of the die, and the use of liquids having different densities in order to produce different pressure gradients.

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