Heating tip and method of manufacturing the same
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United States of America Patent
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-
Mar 21, 2000
Grant Date -
N/A
app pub date -
Oct 1, 1998
filing date -
Oct 1, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heating tip in which an insertion cavity is formed in a tip substrate made of copper or copper alloy for insertion and containment of a heat generating portion, wherein the inner circumferential wall surface of the insertion cavity is formed by forging into a non-circular cross sectional shape which is identical with a non-circular cross sectional shape on the outer circumferential surface of the heat generating portion. The insertion cavity has the non-circular cross sectional shape and, accordingly, the area of contact with the heat generating portion is enlarged compared with a case of a circular cross sectional shape with the hole volume being assumed identical, thereby increasing the heat conductivity from the heat generating portion and enhancing the temperature rising characteristics and the thermal response of the heating tip. Since the insertion cavity is formed by forging loss of the material can be decreased, neatly and easily and, in addition, working life of the tool can be extended.
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