Kreitz Welding & Engineering
Kreitz Welding & Engineering was founded in 2020 as a continuation and further development of a perennial freelance consulting and analysis work.
The company’s portfolio covers, in addition to basic welding consulting, further core areas commonly associated with the welding process in the manufacturing industry.
Customers of Kreitz Welding & Engineering benefit from the provision of external welding supervision, a NDT service, trainings and QM experience as well as traditional consulting services.
Our certified quality management representative can support you with maintaining your existing systems or implementing new ones.
The optimization services in welding consulting we offer are based on essential non-destructive testing methods.
Equipped with the latest testing technology, Kreitz Welding & Engineering is able to metrologically record the quality produced.
Through continuous communication with your employees, we provide them with training and increase the process knowledge in your company. This way, we create sustainable added value in your manufacturing environment.
Our operational area extends beyond Germany’s borders into nearby European countries, and in exceptional cases even farther afield.
Managing Director
Thomas Kreitz
Thomas Kreitz is a mechanical engineer specialized in manufacturing and product development and an international welding engineer – and he pursues this with passion and conviction.
“Combining materials in such a way that the compound lasts is something that has fascinated me since childhood.
The question as to why a connection is not fatigue endurable or breaks has always played a role here.“
References – current and finished projects
Branch
Automotive industry Body in white (Tier1)
Method
Resistance spot welding
Project
PPE 41
Company
——
Required target
PPAP-Note 3
achieved target
PPAP-Note 1
Main tasks:
- Projecting the ramp-up of an electric vehicle highbody (from Greenfield to series production)
- Projecting and ensuring PPAP Note 3 and PPAP Note 1
- Contact person for OEM customer
- Weekly CEO reporting
- Takeover of the Chief Welding Engineer with the following tasks
- Analysis of the planned or existing welding sequence
- Determination of a new welding sequence for geometric stabilization of the floor, for reducing surface defects, for optimizing cycletimes
- Analysis of existing welding caps and introduction of a new alloy with the same shape
- Analysis and optimization of the buttoning diameters in the ZSB (strength values)
- Analysis and optimization of the point positions on the ZSB
- Recording of surface defects as well as evaluation and analysis to improve surface quality
- Optimization of the clamping and hold-down devices as well as the support structures in the line
- Analysis of the measurement reports and activity planning with the Schimming team
- Creation of a weld map
- Planning of destructive and non-destructive testing and support the implementation
- Basic setting of the Ultra Sonic system for spot checking
- Parameter determination and validation by destructive testing
- Process standardization by defining control limits or control charts
- Conducting the stress test (2TP, Run @ Rate)
Branch
Automotive industry Body in white (OEM)
Method
TIG / MIG
Project
e.GO
Company
e.GO Mobile AG
required target
Warpage reduction and optimization of the start of series production
achieved target
Reduction of warpage by 70% and optimization of the entry into series production
main tasks:
- Project planning of BIW activities from the Greenfield
- Selection and implementation of process technology
- Control and selection of filler materials, gases and tungsten electrodes
- Preparation of WPS
- Creation of welding sequence plan
- Parameter determination and validation
- Process standardization through control charts
- Selection and setup of measurement technology to record geometric deviation
- Optimization of clamping technology and adaptation to design changes of the vehicle
Branch
Automotive industry Powertrain (Tier1)
Method
TIG-cold wire / MIG (CMT)
Project
Mechanical torsion dampers
Company
ZF Group – GAT Gesellschaft für Antriebstechnik mbH
required target
Rejects reduction by 20%
achieved target
Rejects reduction by 66% in series production
main tasks:
- Project management of the optimization measures
- Link between production and QM
- Control and selection of filler materials, gases and tungsten electrodes
- Reverse engineering of the torch device and new design
- Reengineering and optimization of the material feed
- Optimization of cycle time
- Optimization of the clamping and holding-down devices
- Calibration of the zero point measurement
- Support and evaluation of destructive and non-destructive workpiece testing
Branch
Automotive industry Body in White (Tier1)
method
Resistance hump welding
Project
B-Pillar P_____e
Company
——
required target
Implementation of a Poka Yoke
strategy
achieved target
Security against operator error established
main tasks:
- Analysis of the defect structure
- Root cause analysis and development of a Poka Yoke strategy for production
- Design of system components
- Dry run with subsequent implementation in series production
Branch
Food industry
Method
TIG / MIG
Project
Cold crack prevention
Company
——
required target
Component without fractures after thermoforming process
achieved target
100% fracture-free components
main tasks:
- Control and selection of filler materials and gases
- WPS with control of line energy
- Production monitoring
- Customer documentation
Branch
Automotive industry Powertrain (Tier1)
method
TIG- cold wire / MIG(CMT)
Project
Lean Management
Company
ZF Group – GAT Gesellschaft für Antriebstechnik mbH
required target
OEE increase
achieved target
OEE increase by 20%
main tasks:
- Performance Loss analysis
- Availability Loss analysis
- Quality Loss analysis
- Analysis and determination of OEE
- Analysis of the critical path in a hard chained series production
- Planning, creation and implementation of work instructions
- Planned primary demand determination
- Optimization of critical production steps