Browse Prior Art Database

Method for producing iron-core bullets

IP.com Disclosure Number: IPCOM000008383D
Publication Date: 2002-Jun-11
Document File: 5 page(s) / 114K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for producing iron-core bullets. Benefits include improved functionality.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 62% of the total text.

Method for producing iron-core bullets

Disclosed is a method for producing iron-core bullets. Benefits include improved functionality.

Background

              Conventionally, a grinding system is used to reduce the back of the wafer (nonelectrical side). The materials required to reduce wafer thickness are the grinding wheel and the grinding powder.

Description

              The disclosed method is a way of creating pointed iron-core bullets that gently dig out silicon on the backside of the wafer. The iron core is essential because magnetic fields accelerate the bullets as they hit the wafer backside surface.

              The method may be divided into two components, the bullet formation system and the injection system. The bullet formation system is comprised of the following parts (see Figure 1):

·        Heated iron core injector

·        Heated bullet molder

·        Electromagnets

              The injection system is comprised of the following parts (see Figure 2):

·        Piston A for the inner injection tube

·        Piston B for the outer injection tube

              The injection tubes are heated via electrical currents through silver tungsten electrical wires (see Figure 3). The inner and outer injection tubes are closed while the bullet materials,

iron core material and bullet shell material are loaded (see Figure 4). Enough heat is applied to reach the liquidious temperatures of the bullet shell metal and the iron core material. The outer injection tube is slowly opened and Piston B gradually pushes out some bullet-shell base metal (see Figure 5). The inner in...