The UF Series provides targeted heating and precision temperature control for hot bar soldering applications such as the connection of flexible circuits, ribbon cables, wires, SMT components, single or dual sided edge connectors and thermocompression bonding of gold ribbon.

UF-4000A is available as a standard reflow soldering unit with a built-in transformer, or as a remote unit (UF-R4000A) with a smaller control unit and separate remote transformer– an ideal option for many automation installations.

Laser cutting and laser micromachining are non-contact processes which utilize a laser for micro drilling, micro milling, micromachining, micro patterning, micro scribing and ablation for industrial applications. The cut and feature edges are of high quality with little no burring, low surface roughness and dimensional accuracy.

The laser micro cutting process works by directing the laser beam through a co-axial gas nozzle to the workpiece. The laser melts a thin filament of material according to power and part conduction, the pressure of the coaxial assist gas then removes this molten filament through the underside of the cut. This process is repeated as the laser moves across the workpiece. According to cut conditions the periodic removal of material can sometimes be seen as “striation” lines running from the top to the bottom of the cut edge. This is a single pass processing technique that can create single sided features and asymmetrical features with very small internal radii.

SIGMA® Laser Stent and Tube Cutting System

The SIGMA Laser Stent and Tube Cutting System is designed for precision micro-cutting of tubes.  High speed linear motors and the latest generation digital controller minimize tool path cycle time, options for fiber lasers or femtosecond lasers enable a fast and stable laser cutting process, and an AMADA WELD TECH-designed operator-oriented machine interface maximizes user ease and efficiency.  AMADA WELD TECH engineers provide system installation at your facility, along with a fully developed laser process and operational training as part of the system delivery.

The SIGMA Laser Stent and Tube Cutting System can be integrated with either a fiber laser or a femtosecond laser to ensure optimal results for a wide variety of stent and tube materials and thicknesses.  Complete tooling offerings enable laser processing of tube diameters from 0.2 mm – 30 mm (0.008 in – 1.180 in), and the flexible platform with up to 4 axes of coordinated motion allows for both on-axis and off-axis feature cutting.  The system control software interface and hardware layout provide easy operator use for day-in-day-out production, including a single screen user interface, multi-level password protection, excellent workspace access, quick-open sliding door, internal process area lighting, part capture and unload options, and easy-to-access maintenance points.

The rigid steel frame and granite processing platform mounted to pneumatic isolators provide excellent vibration dampening for the processing area.  Vibration-producing components, like chillers and water pumps, are mounted on an isolated internal platform, standing free of the machine frame.  For enhanced automation capabilities, AMADA WELD TECH offers automated tube loaders, robotic arms for loading and unloading, and machine vision systems for precision part positioning and feature measurements.

The Delta Series laser processing workstations provide a flexible, low cost, CDRH Class I environment for precision marking, welding and cutting of medical, automotive, electronic, and aerospace components, as well as a broad range of other industrial applications. Available in 4 standard sizes, Delta Series workstations are available with your choice of precision, multiaxis (XYZ) CNC motion stages, control hardware, optional rotary, and Windows® software, with industrystandard G & M code programming features. A small foot-print design fits lean manufacturing requirements.

Lasers welders produce a beam of high intensity light which, when focused into a single spot, provide a concentrated heat source, allowing narrow deep welds and fast welding speeds. The process is frequently used in high volume applications such as in the automotive and medical industries. Laser welding is a non-contact process which requires access to the weld zone from only one side of the parts being welded. There are many joint geometries that can be welded, but there must be a close fit-up at the joint interfaces, which makes tooling a key aspect for laser welding success.

Three types of welds can be achieved with a laser welder: conduction, transition/keyhole and penetration or full keyhole. Conduction welds are performed at low power, resulting in wide, shallow weld nuggets. Transition/keyhole welds utilize medium power density and result in a deeper weld nugget typically with a width to depth ratio of around 1. Penetration or full keyhole welds are resultant of direct power delivery into the material via the keyhole resulting in deep, narrow welds with width to depth ration typically between 3-10.

Laser Spot Welding

Laser spot welding is a process which uses a laser welder to create a single weld spot to join metals together. Laser welders are capable of delivering a precise pulse of ligh with accurate, repeatable power, energy and duration. When the laser pulse is focused into one place – a small spot – (adjustable anywhere from approximately 0.02 to 1.0 mm (0.001”-0.040”) in diameter) on the part, the power density is sufficient to cause rapid melting to create the weld. The high power density enables efficient absorption of the laser by creating the “keyhole effect.” As the pulse ends, the liquified metal resolidifies and creates a small spot weld. This entire process happens in just a few milliseconds.

Laser Seam Welding

In laser seam welding, the part to be welded is moved or rotated under the focus head allowing laser spot welds to overlap or for a CW fiber laser provide sufficient penetration. Key parameters for pulsed laser seam welding are the pulse repetition rate, measured in pulses per second (Hz), and the linear part travel rate or welding speed and focused spot diameter. For CW fiber lasers the power and spot size, and position of focus are key parameters. With each of the lasers these parameters are precisely controlled to provide the exact weld needed, whether for mechanical strength or a level of hermetic sealing.

Pulsed Nd:YAG and fiber, and CW fiber laser welders can join a wide range of metals, including mild and stainless steel, nickel and nickel alloys, titanium, aluminum, and copper and copper alloys. Dissimilar metal welding is also possible between a number of these materials.