Experimental Investigation of Laser Ablation Characteristics on Nickel-Coated Beryllium Copper

Abstract

Abstract:As electronic products are miniaturized, the components of the spring contact probe are made very fine. Current mechanical processing may make it difficult to perform micro-machining with a high degree of precision. A laser is often used for the high precision micro-machining due to its advantages such as a contact-free process, high energy concentration, fast processing time, and applicability to almost every material. The production of micro-electronics using nickel-coated copper is rapidly increasing and laser material processing is becoming a key processing technology owing to high precision requirements. Before applying laser material processing, it is necessary to understand the ablation characteristics of the materials. Therefore, this study systematically investigates the ablation characteristics of nickel-coated beryllium copper. Key laser parameters are pulse duration (4~200 ns) and the total accumulated energy (1~1000 mJ). The processed workpiece is evaluated by analyzing the heat affected zone (HAZ), material removal zone (MRZ), and roundness. Moreover, the surface characteristics such as a burr, spatter, and roundness shapes are analyzed using scanning electron microscope (SEM).

Study on the interaction characteristics of acrylonitrile butadiene styrene and UV laser

“…Laser-aided manufacturing has various advantages, such as contactless process, high-energy concentration, fast processing time, a small Heat-Affected Zone (HAZ), and applicability to almost every material. Thus, laser technology has been applied to many different types of materials such as sandwiched composites [11][12][13][14][15][16][17][18][19], reinforced composites [13,[20][21][22], and plated metals [23][24][25][26]. Experimental studies were conducted to investigate the effect of physical phenomena [11,15,16,19] and interaction characteristic [12,17,18] during laser cutting of electrode for lithium-ion batteries.…”

“…Furthermore, the laser processing was applied to investigate the penetration mechanism [13,20,21] and microstructure characteristics [22] after laser cutting of cement-based materials. The other experiments were studied to fully utilize laser spot cutting on plated metals [23][24][25][26].…”

Welding of Thin Tab and Battery Case for Lithium-ion Battery Cylindrical Cell Using Nanosecond Pulsed Fiber Laser

“…In addition, fracture occurred in the aluminum side when the joint was inserted with pure aluminum. Laser welding has been considered to apply for various fabrication [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] . The technique is a non-contact joining technology that resulted in lower electrical resistance in comparison with other welding methods such as spot welding and ultrasonic welding 30) .…”

Electro Thermal Modelling of Electrical Discharge Machining of Be-Cu Alloy by Varying Fraction of Energy

“…In this present study a thermal modelling has been performed for analysing the machining of Be-Cu alloy by EDM. Be-Cu is a highly electrical and thermal conductive alloy which is extensively used in heat exchangers like solar heat exchanger and welded heat exchanger [24,25]. The Conventional mechanical technology is not suitable to machine these high degree pré cised components by Be-Cu alloy [22].…”