Cathleen's blog

Posted Sat 17 December 2016

Remote laser welding advantages a range of production applications

With now high-brightness, multi-kilowatt solid-state laser causes, the meaning of past laser welding with a standoff around many hundred millimeters ended up being primarily practical in industrial welding applications. Scanning optics are guiding the beam in a 2D area through a set of high-speed, galvanometer-driven glasses when it comes to 3D relationships. A quick focusing on Instaparksystem rapidly adjusts the focus range. These systems can direct a laser area with high accuracy and can transfer the area to any point in their work envelope within a couple of milliseconds. If the work case of scanner optics is insufficient to cover the wanted area to be bonded, a big articulated arm robotic can be utilized to support the scan head. The working variety can be reached large sheet workpieces and to get them under sharp inclination angles for welding helmet reviews.

These methods have been carried out mostly for lap welding of sheet metal elements. Raiders have made use of the services of remote laser welding to more efficiently bonded a kind of challenging applications. The list production sites has taken power of old laser welding, attaining Instapark levels of precision and performance not possible with more conventional welding strategies

Flow developments in optical scanner setups, scanner controls, and real-time user interfaces to optical sensing units have considerably broadened the application of remote laser welding A full array of optical zooms are readily possible to enhance the optics to the suitable laser power and beam quality wanted for a particular application. A formerly not available optical zoom capacity that permits a variable area size at focus is now offered in scanners such as the SCANLAB intelliWELD II. Scanner controllers are provided with the intuitive interface and complete combination with the directing robotic's movement preparation, making the formerly troublesome job of shows involved weld applications easy and enough to use.

In its most basic type, primitive laser welding can be carried out with fixed-position 2D and 3D scanners. Usually described as fixed remote laser welding, the scanner is strictly connected in a repaired place, the un-welded assembly lies within the scanner field, and the only movement completely welding is using the scanner optic.

A quickly growing application location for fixed remote welding is the assembly of lithium battery modules for e-mobility. These batteries need welding of specific battery cells, in addition to product packaging of multi-cell assemblies. These can be complex parts of different products and several layers in a large range of densities. Lasers are perfect for the majority of these welding requirements, and scanners have shown to be a valuable tool in taking full advantage of speed and precision while supplying extremely versatile weld geometries.

One part is the welding of the BMW i8 battery modules. BMW engineers were confronted by the obstacle of raising the tensile strength of the welds linking the weighted base to the structure of the aluminum battery module while protecting the joint quality. This was accomplished by carrying out scanner welding with various oscillation patterns. Dr. RĂ¼diger Daub, Production Technologies, and Model Store Electric Energy Storage at BMW reported that by combining longitudinal and oblique doubts, the tensile force was grown by 35% and porosity was reduced by 35%. The used Blackbird Robotics scan service optimizes versatility in attachments to both high mirror characteristics and complete control of the heat input with easily programmable uncertainty designs and power channel along the swing fashion.

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