超音波溶接の現状

摘要

Ultrasonic welding is applicable for welding various same and different matal specimens. Complex vibration systems with two- or three-dimensional vibration loci are significantly effective and essential for high power applications of ultrasonics, compared with conventional systems using linear vibration. For welding of large specimens, two-vibration-system welding and butt welding systems are effective. And also, complex vibration welding systems are highly effective for small to large specimens including packaging in microelectronics. One-dimensional complex vibration converters with diagonal slits and different sound velocity metal-ring pairs are available for various applications including seam welding, micro-joining and flip-chip bonding of semiconductors.%超音波振動による金属材料などの溶接では，①溶接部rnが境界面のごく近傍に限られている，またこのために，rn②溶融温度の異なる異種金属間の接合が可能であるなどrnの優れた特長がある．特に，アルミニウム，耐食アルミrnニウムなどの軽金属の同種及び異種材料の溶接や溶融温rn度が異なる異種材料間の溶接が容易に行えるため広い分rn野で用いられている．