Download e-book for kindle: Advanced Metallization and Interconnect Systems for Ulsi by R. C. Ellwanger, S. Q. Wang

By R. C. Ellwanger, S. Q. Wang

ISBN-10: 155899341X

ISBN-13: 9781558993419

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Extra info for Advanced Metallization and Interconnect Systems for Ulsi Applications in 1995

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If it is not practical to pre-heat your tool, what type of weld technique would be suitable? 2, page 44. If you intend to weld a tool and you do not know what it is made of, you can either send it away for analysis to your local inspecting and testing engineers or you can guess. In my experience, most people are prepared to settle for a good guess rather than incur the time and expense of an analysis. g. carbon (C), chrome (Cr), molybdenum (Mo) content. 1 gives you a guide to tool HRC (Hardness Rockwell IC’).

These coppers and light coppers tend to be used in the manufacture of mold cores, cavities, pinch offs (nips), sprue bushings, hot runner systems, core pins ejector pins and blow pins, etc. ) used behind the scenes on mold tools will be a high alloy copper. They are likely to contain 8-1 5% aluminum, 3 4 % ferrite and, if they are hard, up to 3% beryllium. 36 Handbook of mold, tool and die repair welding Other behind the scenes tools include gibs, mold locking devices, sleeve bearings, guide pin bushings, guide rails, lifter blades and leader pin bushings.

This section concentrates on the types of tool copper used in the manufacture of mold tools. Most tool coppers connected with mold tools tend to be two main types: mold face coppers and working coppers. Mold face coppers (color: copper and light copper) Copper color Copper colored, copper mold tools will be of low alloy copper. 5%). If the tool is hard, it may contain high levels of beryllium (2-3%). Light copper color Light copper colored, copper mold tools will be of a higher alloy copper. These tools may contain high levels of nickel (lo%), silicon (3%)with additions of chromium.

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Advanced Metallization and Interconnect Systems for Ulsi Applications in 1995 by R. C. Ellwanger, S. Q. Wang


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