Deutsch    |   Français 

  Products     Applications     Partners     News     Download     About Us     Contact  

Resistance Welding of Steel Sheets


Welding of High-Strength Steels

The increased application of high-strength steels in the car industry causes a big problem in welding of sheet metals. Differences in the steel elasticity and the hardening of the sheets which has been caused by cold forming, result in poor fit-up and thus in increased sheet bulging which differ from part to part and occur even inside the parts; a determination before welding is not possible. Since, in most cases, sheet bulging is not compensated by fixing with clamps and pressure pads or similar tools, the welding gun is to provide the necessary force.

Without adaptive welding current control, the compensation of the disturbance "sheet bulging" is, for all welding spots, managed through an extraordinary increase of the gun force only. However, the diameters of the welding spots which are located in the areas without sheet bulging are too small because the electrode force has been set too high. Instead of the electrode force increase, therefore, the application of an adaptive current control (adaptation of welding current and welding time) is the better solution of this problem.

 

Our solution:

Power Units
SPATZ+M300 SPATZ+M400
SPATZ+M600
SPATZ+M800
SPATZ+M900
SilverSPATZM600 SilverSPATZM800 ServoSPATZ+M400
ServoSPATZ+M600
ServoSPATZ+M800
SPATZ+Tandem1800 SPATZ+MS2400      
Transformers
SPATZTI-60R
SPATZTI-120R
SPATZTI-200R      
Operating Devices
SPATZBG-02 SPATZBS-01      
Measuring Devices
SPATZMulti04        
Switch Cabinets
SilverSPATZCLL-R2 SilverSPATZCLL-H1 SilverSPATZHPA-H1 DragSPATZAK SPATZ+CL-H1
SPATZ+CL-H2 SPATZ+CL-R SPATZ+CL-T    
Software
SPATZStudio SPATZStudioNET SPATZQS+ MASTER
MASTER Database
MASDAT
Servo Drives
ServoSPATZ+M400
ServoSPATZ+M600
ServoSPATZ+M800
ServoSPATZ+GM ServoSPATZWG50 ServoSPATZWD20 ServoSPATZWD100
Gun Accessories
MASDAT Matlock ServoSPATZ+GM ServoSPATZWG50 ServoSPATZWD20
ServoSPATZWD100