Browse Prior Art Database

Coaxial Microweld Tip

IP.com Disclosure Number: IPCOM000062782D
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Coughlin, CP: AUTHOR

Abstract

Welder tips presently used in the microweld process are manufactured with a side-by-side lamination geometry which makes susceptible to damage during tip shaping and to short life in production processing.

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Coaxial Microweld Tip

Welder tips presently used in the microweld process are manufactured with a side-by-side lamination geometry which makes susceptible to damage during tip shaping and to short life in production processing.

The design of the present microweld tip, as shown in Fig. 1, employs an epoxy, glass or ceramic laminate 1 to separate the two conductor halves 2 (tungsten or molybdenum) of the tip. This design is extremely fragile, tensile failure at the dielectric bond often resulting from the forces applied during tip grinding/ welding processes. Subsequent separation of the tip halves contributes heavily to the short life of the tip in use.

The disclosed coaxial design tip, which is shown in Fig. 2, overcomes the previously noted problems by presenting a concentric two element tip with an inner element 4 and an outer element 5 disposed therearound and bonded by a 360OE bond 3. Fig. 2A shows an embodiment with a flat tip, while Fig. 2B shows an embodiment with a beveled tip. This design [a 360OE bond 3 between the two elements of the tip, thereby] substantially reduce the effects of the grinding/welding forces on the tip. In the disclosed design, tip angles, area of contact, coaxial diameters and materials all can be optimized to meet weld process and product requirements.

Disclosed anonymously.

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