Mednarodni projekti
Droplet Weld an Environmentally Friendly, Lead - Free Joining Technology Using Metal Droplets.
Organizacije (1)
, Raziskovalci (1)
0782 Univerza v Ljubljani, Fakulteta za strojništvo
št. |
Evidenčna št. |
Ime in priimek |
Razisk. področje |
Vloga |
Obdobje |
Štev. publikacijŠtev. publikacij |
1. |
01698 |
dr. Franc Kosel |
Konstruiranje |
Vodja |
2000 - 2002 |
817 |
Povzetek
Up-coming legislation will forbid the use of lead-containing solders in the near future. Good alternatives for electrical interconnection have not been found. Alternative solder materials are much more expensive (factor 4), and have a lower though output (longer contact times of the product). Very often lead-free solders contain other environmental unfriendly components (such as bismuth and antimony). Gluing is limited to low temperature applications. Droplet weld is a novel alternative of a lead-free joining technology and this welding is using simple and low costs materials. In droplet welding a metal droplet is produced from a feed wire by local heating using a plasma arc or laser irradiation. A hot metal droplet is subsequently detached and will fall onto the parts to be joined. First tests have shown that a single hot droplet is sufficient to make a high temperature weld.