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Accelerated Card Wear Tester

IP.com Disclosure Number: IPCOM000079428D
Original Publication Date: 1973-Jul-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Dereng, DR: AUTHOR [+2]

Abstract

Materials to be used in card handling machines can be tested for resistance to wear, by wear media consisting of card stock with additional abrasive material. The added abrasive material should have a particle size no larger than the diameter of abrasive particles which occur normally in standard card stock. The wear media are manufactured into stable disks as follows, and thereafter rotated against the material to be tested. 1) Cut card stock into small pieces having a maximum dimension less than 1/4 inch. 2) Add 3.45g of this stock and 20ml of water to a blender and blend for one minute. 3) Add a premeasured amount of an abrasive such as aluminum oxide to the blender and blend for an additional two minutes, or until few traces of card stock remain.

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Accelerated Card Wear Tester

Materials to be used in card handling machines can be tested for resistance to wear, by wear media consisting of card stock with additional abrasive material. The added abrasive material should have a particle size no larger than the diameter of abrasive particles which occur normally in standard card stock. The wear media are manufactured into stable disks as follows, and thereafter rotated against the material to be tested. 1) Cut card stock into small pieces having a maximum dimension less than 1/4 inch. 2) Add 3.45g of this stock and 20ml of water to a blender and blend for one minute. 3) Add a premeasured amount of an abrasive such as aluminum oxide to the blender and blend for an additional two

minutes, or until few traces of card stock remain. 4) Remove resulting pulp from blender and filter away the water. 5) Transfer the pulp to the desired mold. A rod should be molded in the center of the wear media, so that it may

easily be mounted in a rotating device after curing. 6) Cure in a heated press (280 degrees F) at 15 tons of pressure for

two hours. Apply pressure gradually to allow remaining

excess water to be squeezed out, rather than evaporated to

insure a dense wear disk.

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