溶融特性に及ぼすパルスエネルギー,焦点はずし距離および捻りピッチの影響 : YAGレーザーによる銅細線束均一溶融に関する研究(第1報)

概要

論文の詳細を見る
On the laser welding, there are some reports about the welding between single fine wires, but no reports about the welding between the bundles of fine wires themselves or between a fine single wire and the bundle. Imaging that the bundle of Cu fine wires is laser welded to the other single fine wire, an experiment for uniform melting without cutting of the bundle was carried out. The following results are obtained : (1) By twisting the bundle of seven Cu fine wires, uniform melting was formed on 2. 5〜3. 5 mm twisted pitch. Flectric resistance of the bundle was not changed before and after melting. The quality of the uniformly melted bundle should be no problem for practical use (2) Most of untwisted bundles in which the Cu wires are not always detached each other do not melt uniformly. On the other hand, twisted bundles melt uniformly because of Cu wires being arranged close together. (3) Optimum pulse energy range for uniform melting extends in the case of large melting mass. (4) The bundle of fine wires melt in lower pulse energy than single wire with the same cross section.
社団法人溶接学会の論文
2003-02-05