Development, optimisation, construction and manufacturing of systemoriented components and subassemblies
Intelligent solutions for sophisticated customers requires comprehensive know-how in the entire product development process.
Investments in modern technologies and optimum synchronised processes guarantee individual uncompromising precision from one source ranging from the component part to complete ready-to-assemble systems. Your task is our challenge!
Turning
We turn on automatic multi-spindle and single-spindle lathes and CNC bush-type lathes and CNC chucking lathes.
Fine blanking / Stamping / Deep-drawing
Fine blanking enables the production of highly precise parts without finishing and is suitable for almost all types of metals. This method is particularly advantageous for gear or brake components with very tight tolerances.
We have:
Fine blanking presses with the following specifications:
Press force: 1600 kNt to 8000 kNt
Material thickness: 1 to 10 mm
Material width: up to 300 mm
Material strength: up to 700 N/mm²
Our automatic stamping machines are highly productive and flexible in use.
Automatic stamping machines with the following specifications:
Press force: 1600 kNt to 4000 kNt
Material thickness: 1 to 8 mm
Material width: up to 400 mm
Material strength: up to 700 N/mm²
Deep-drawing:
We closely cooperate with our sister company on deep-drawing. See link: www.fichthorn.de
Your advantages:
all stamping and forming oils are Chlorine-free
Materials processed: Steel, stainless steel, aluminium, each in standard and special grades
we make our own tools and construct our own jigs and fixtures
own measuring room for fine blanking / stamping
production is controlled via an integrated performance measurement system
Milling
Our modern processing centres produce complex components with precise surfaces.
Gear cutting
Highly productive hobbing machines produce sophisticated gears for powertrain applications.
Broaching
Even complicated and complex forms can be realized with utmost precision. We can control interior and exterior spaces with a press force of up to 200 kN.
Hardening
We use a wide range of furnaces and systems for almost all common hardening process. Our own materials laboratory monitors the quality.
We have:
Multipurpose chamber furnaces for carburization and hardening and tempering
Retort ovens for nitrocarburization with or without oxidizing
Tempering furnaces
Induction hardening plants with medium and high frequency
Surface treatment:
Manganese and zinc phosphatizing unit
Deburring:
Barrel-polishing
ECM deburring
Abrasive belt grinding
Brushing
Grinding
We use various grinding machines to manufacture components with the highest precision and quality.
We have:
CNC-controlled double-sided grinding machines; rotary table and pass
Centreless grinding machines; pass and plunge cut
CNC-controlled centreless grinding machines with automatic feeding of parts; plunge cut
Centreless grinding machine with automatic feeding of parts; plunge cut
CNC-controlled grinding machine with CBN grinding wheel
Welding
We use a large portfolio of welding equipment of different levels of automation such as TIG, MAG, Arc Force, laser or resistance pressure welding processes. The quality of welded joints is monitored by our own materials laboratory and during production by in-process monitoring of welding parameters.
Mounting
We use various processes, manufacturing techniques and equipment for the mounting process:
fully-linked, highly automated assembly lines
Force-displacement monitored assembly processes
Automated leak test
Assembly units are inspected for function and geometry
Laser markings are magnetized and the flux density is checked
The worker is guided during the assembly activities, visualization and monitoring via screen
Straightening
We have automatic straightening plants for welded assemblies or for hardened axially symmetric components (with crack sensor).
Adhesive bonding
SELZER uses adhesive bonding in large series production. We use both, UV-curing single-component adhesives as well as two-component mixing systems composed of resin and hardener. Combining suitable pre-treatment methods, such as laser or plasma cleaning of components, ensures perfect adhesive results.
Examples for adhesive bonding in series production:
Bonding of magnetic assemblies to the sensor holders of dual-clutch transmission shift forks
Bonding sealing sleeves to the control lever around the brake components
Hot riveting
SELZER uses hot riveting as an extremely economical joining process. This process snaps rivets in plug-in connections under current flow and pressure and generates extremely durable connections. Short cycle times and relatively low equipment costs keep process costs at a low level. Hot riveting and not fusion welding should be used if technically possible and feasible in the existing space.
Cleanliness requirements
Component cleanliness is a technical quality feature in the automotive that must be controlled and documented. The residual contamination test must provide reliable data on product and process quality. The residual contamination analysis of functionally-relevant automotive parts requires special expertise and laboratory equipment. How are tests performed? Standard-compliant cleanliness analyses of components and assemblies follow established standards:
VDA Volume 19
DIN EN ISO 16232
and according to customer and company standards
SELZER cleans parts and components by liquid extraction. The relevant particles must be washed off by liquid from areas concerned as the functional areas of components and parts are mostly located inside the component or part or are difficult to access. We use ultrasound.
Particle type, size and quantity are analysed. A report is created for each analysis. Images of the largest and second largest metallic and non-metallic particles and of the largest fibre are automatically output.
Other SELZER technologies
Find out about these topics
Development
Our product development is supported by staffs with many years of professional experience.
Our own tool making department uses ultra-modern and innovative production methods to produce and maintain tools for fine blanking, progressive dies, bending and transfer.
