Applications Automotive

In the automotive industry, ultrasonics are particularly used for joining interior plastic parts, welding wires and contacts on cable looms, cleaning parts in the production process and for the screening of powder coatings.

The Torsional PowerWheel® system was utilized to clear the connector height and achieve a superior quality weld for both 35 mm² and 50 mm² cables with the SQ4 terminal.

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35 mm² high quality cable is used to terminate this Rosenberger connector with limited space for the 35 mm² cable.

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Battery cells in an electric vehicle are connected using aluminum stampings. These connecting elements should also be detachably connected to a copper busbar.

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Eyelet terminals are used for attaching grounding connections to the motor vehicle chassis. The individual cores must be firmly welded within the lateral terminal limits. 

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95 mm² cable with 3,000 flexible fine strands of 0.2 mm diameter is used to terminate the Staubli terminal with limited space for required weld width of 22 mm.

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Joining different material components by means of ultrasonic riveting. Simultaneous forming of two rivet heads.

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Low-vibration and secure joining of electronic components through ultrasonic riveting.

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Tight welding of injection-moulded parts without additional sealing elements with continuous process monitoring.

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Ultrasonic embedding of the metal SonicLok threaded bolt inserts into a plastic housing in a durable and low-tension manner.

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Simultaneous ultrasonic embedding of four threaded bushes into a POM cover flange so they cannot be extracted.

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Securing insulation to a plastic cover at several points using ultrasonics. The process is carried out in a special plant with integrated IPA3505 actuator units.

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Despite the absence of a specific connection seam, an ideal connection is achieved by means of ultrasonic spot welding of two flat components.

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Securing electrical conductor tracks with zero backlash at several positions through ultrasonic riveting and individual path limitation.

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Torsional ultrasonic welding of PTFE membranes into the ventilation opening of a housing in a tight, particle-free manner without damage.

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Ultrasonic welding of sensor supports into painted, thin-walled bumpers without spoiling the appearance of the visible side.

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Tight welding of a panel with a curved surface onto a plastic housing with LEDs without damage with a carefully designed joining seam.

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Tight welding of a reflector made of PMMA onto a rectangular ABS/PC housing without markings. Monitoring the welding quality and recording the process parameters.

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Ultrasonic welding of a nipple with attached springs in a tight manner and without damage to an injection-moulded automotive part made of PA6.6 GF.

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Tight torsional ultrasonic sealing of the compensation opening of a housing part with a delicate membrane without resulting in a "membrane effect".

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Precise and economical compacting of the end of electrical cable sets in various configurations. Quality control integrated in the production process.

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Electrical wire harnesses used in the automotive industry call for the stranded copper wires with various cross-sections and configurations to be precisely welded together.

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Economical and reliable manufacturing of strand node connections made of Cu/Cu, Al/Al or Al/Cu with the same quality. Quick conversion of the production installations with the same quality.

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Welding the strand end nodes for the board assembly wiring harness. Handling, accessibility, KSK compatibility and quality control are important prerequisites.

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Welding an aluminium cable to a two-part terminal after both contact parts made from different metals have been welded and tightly overmoulded with plastic.

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Permanently connecting an Al current conductor running through the body with a 120 mm2 Al cable with the lowest possible loss of current conduction.

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Welding an Al cable with 60 mm2 cross-section onto a nickel-plated, angled Cu terminal. The weld itself should be as narrow as possible.

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An aluminum busbar with a cross-section of 120 mm2, which is designed for high currents, should be provided in an electric vehicle as the connection to the traction battery. 

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Contacting an insulated Al current conductor with current taps in any position in a fully automatic and secure manner. Expensive partial insulation before making the contact should be avoided.

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Electrical welding with ultrasonics of a mixture of Cu and Al strands in various configurations with as little contact resistance as possible.

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Welding an aluminium cable with a cross section of 120 mm2 to a nickel-plated copper terminal. The weld should be as narrow as possible for design reasons.

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Welding a Cu high-voltage cable with a cross-section of 70 mm2 onto a Cu contact. Maximum welding width 15 mm. Tension and shear loads must reach the specified values.

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Welding two fine strands with 2 x 50 mm2 cross-section (total 100 mm2) on a silver-plated Cu terminal. Significant reduction of the welding width of 30 mm as a result of the smaller installation space.

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Electrically connecting terminals for battery contact with Al cables with a 35–42 mm2 cross-section in a reliable manner. Simple adaptation of the welding system to various cable sizes.

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Electrically connecting MAS terminals for high-current applications in vehicle construction with Cu cables in a reliable and conductive manner. Simple adaptation of the welding system to the different product variants.

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Securely welding an Al cable with 85 mm2 cross-section in a nickel-plated Cu tubular cable lug with a wall thickness of 0.8 mm. Pull-out strength must meet specified value.

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Cost and weight savings in vehicle construction. Contacting an insulated Al current conductor with a bolt with SONIQTWIST® technology.

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The objective to fasten a busbar with a screw in a cost-efficient way while still maintaining the electrical conductivity. 

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The KERN-LIEBERS Group, a producer of precision stamped parts, has developed a technique for coating aluminum busbars inline with silver.

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Determining the grain size distribution of ground, classified pigment powders using ultrasonics-supported screening analysis.

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Visually perfect surfaces thanks to the precise fractionation of the powder and minimisation of the amount of incorrectly sized grains thanks to ultrasonic support in screening machines.

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Standardized terminals are mainly used in vehicle construction for high-current applications. The welding system must adapt to different cable dimensions and terminal sizes.

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Eyelet terminals are used for attaching grounding connections to the motor vehicle chassis. The individual cores must be firmly welded within the lateral terminal limits. 

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Contacting Cu-coated IGBT ceramic printed circuit boards at various points with optimum electrical conductivity. The SONIQTWIST® technology is used for accessibility reasons.

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Owing to the increases in the price for copper, aluminium is becoming more and more important. Ultrasonic welding technology is just as suitable for aluminium strands as it is for copper strands.

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Compacting or welding a twisted Cu strand with a cross-section of 160 mm2 to a high degree. Single wires must not be damaged.

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Welding threaded bolts or supporting rails to a deep-drawn Al housing for electronic components with SONIQTWISTÒ technology.

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Engines comprise many individual high-precision components. The parts must be cleaned in a reproducible manner before a subsequent process step.

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Reliably removing residual dirt from pistons and connecting rods for final engine assembly using ultrasonics. Controlled by ProfiNet bus systems

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High cleaning standards for surface-treated components such as exhaust systems. Fully automatic, reliable and reproducible cleaning with ultrasonic tube resonators.

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Removing oil, dirt, polishing paste or machining residues from small parts after final manufacture. Cavitation of ultrasonic tube resonators even reaches concealed places.

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A current-safe connection of a 95 mm² HV copper line on a copper terminal is to be established. The tight installation space requirements are the greatest challenge. 

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For an electrical charging socket with very limited interior space, a copper plug contact with a copper cable and a cross section of 95 mm2 with excellent electrical conductivity and minimal contact resistance needs to be connected.

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As a result of the trend towards miniaturization, housings with integrated cable connections are to be increasingly space-saving, which is why the stripped cable ends must become increasingly shorter.

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