Question 1

Which materials are suitable for stamped parts in large quantities?

Accepted Answer

Steel, aluminum, stainless steel, copper, brass and plastics such as PE, PP or PVC.

Question 2

What processes are there for surface finishing of stamped parts?

Accepted Answer

Galvanizing, powder coating, electroplating, painting, cathodic dip coating, nickel plating, bright finish and customer-specific processes.

Question 3

What quantities and batch sizes are economical for stamped parts with progressive dies?

Accepted Answer

Depending on component size and complexity, from medium to large series (e.g. for the automotive and electrical industries).

Question 4

Can I buy punched parts that are delivered ready for assembly?

Accepted Answer

Yes, we offer ready-to-assemble stamped parts for assemblies and final assembly.

Question 5

What are the advantages of series production of stainless steel stamped parts?

Accepted Answer

High repetition accuracy, consistent quality and inclusive quality inspection of series production.

Question 6

For which industries does Karl Naumann supply stamped parts?

Accepted Answer

Automotive, electrical industry, medical technology, furniture industry, ventilation and air conditioning technology and fastening technology.

Question 7

What advantages does Karl Naumann offer as a stamped parts supplier?

Accepted Answer

Flexibility, experience as a precision stamped parts supplier, international expertise and cost reduction through high-quality stamped parts.

Question 8

How does the material thickness of 0.2 - 3 mm influence the punchability of high-strength AHSS steels?

Accepted Answer

The technical starting point is the yield strength of the material in conjunction with the sheet thickness, whereby the influence of the material thickness on the punchability increases the required cutting force exponentially with increasing strength. Mechanically, this leads to a massive thermal load on the cutting edges, which increases the risk of microcracks in the structure. The consequence is premature tool wear, which is why Karl Naumann GmbH prescribes shorter maintenance intervals for AHSS grades above 1000 MPa to prevent component failure.

Question 9

What degrees of forming can be reliably realized for structural components in complex stamped-bent parts?

Accepted Answer

When designing stamped and bent parts, the work hardening of the material, particularly in the case of stainless steel or cold-rolled strip, limits the maximum bending angle in relation to the radius. Mechanically, exceeding the material-reactive yield strength leads to material breakage or impermissible thinning of the functional zones. The technical limit is a minimum bending radius of 1 × material thickness, as otherwise the structural integrity of the vehicle component cannot be guaranteed under dynamic load.

Question 10

To what extent do residual stresses in cold-formed stamped parts affect the dimensional accuracy after heat treatment?

Accepted Answer

The starting point is induced stresses in the metal structure caused by the stamping and forming process in spring steel components. These stresses are released thermally during subsequent coating processes or during operation under load, which leads to distortion of the geometry. The risk lies in the violation of the requirements for plane parallelism, which leads to an exclusion criterion for assembly components from Karl Naumann GmbH if the deviation exceeds 0.05 mm.

Question 11

Why is it critical to avoid burr formation when stamping HV battery contacts?

Accepted Answer

When manufacturing busbars made of copper between 0.2 and 3 mm thick, an exact cutting gap is crucial for precision parts in order to prevent mechanical flake formation. These particles can lead to electrical short circuits in the battery module as they migrate through vibrations. We therefore use seamless optical process monitoring in the punching tool to immediately identify burr heights greater than 10% of the material thickness as a source of error.

Question 12

What are the no-gos when integrating into automated assembly lines with regard to component symmetry?

Accepted Answer

The technical origin lies in the component geometry of transfer parts, which have no clear orientation features for automated stamped part removal. In logic-based feeding technology for stamped and bent parts, this leads to incorrect assignment of the gripper systems or system downtimes. A technical no-go is the use of components without mechanical poka-yoke features, as this massively destabilizes cycle time optimization in the stamping line.

Question 13

How is the service life of the cutting elements optimized when processing galvanized steel strip?

Accepted Answer

When punching galvanized material, the wear protection on high-performance punches serves to minimize the chemical-mechanical abrasion caused by zinc deposits. Mechanically, these deposits increase the frictional heat, which halves the tool life compared to uncoated sheet metal. Karl Naumann GmbH uses special CVD coatings and optimized lubricant concepts to ensure process stability in long-term production.

Question 14

What role does tool load monitoring play in the service life of series tools?

Accepted Answer

Integrated tool sensors for quality assurance record the maximum pressing forces and retraction forces for each stroke. Mechanically, increasing force gradients indicate the onset of wear or lubricant film cracks. Without this monitoring, there is a risk of unpredictable tool failure (punch breakage), which reduces the availability of the systems; we therefore define limit loads which, if exceeded, trigger an automatic stop.

Question 15

What requirements for plane parallelism must housing parts for automotive sensors fulfill?

Accepted Answer

The starting point is the contact surface of stamped aluminum parts that serve as carriers for electronic components. Mechanically, insufficient flatness leads to stresses during screwing, which can damage the sensitive sensor technology. Surface roughness testing after stamping and flatness measurement are mandatory, with deviations of more than 0.1 mm leading to immediate rejection at Karl Naumann GmbH.

Question 16

How are stamping processes validated in accordance with IATF 16949 for safety-relevant components?

Accepted Answer

Validation is based on statistical process control (SPC) over a defined batch size under real series conditions. Mechanically, the process capability of the stamped part production is verified by determining the Cpk values. A process is considered unstable if the Cpk value falls below 1.33, which makes a 100% inspection or a tool correction mandatory.

Question 17

What does the specification of stamped parts for integration into electrotechnical assemblies involve?

Accepted Answer

In addition to the alloy (e.g. brass or bronze), the specification defines the exact proportion of cut surfaces and the edge properties. Electrically, the proportion of smooth cut significantly influences the contact resistance of contact stampings. Karl Naumann GmbH's technical documentation must also define the requirements for strip feeding systems and the type of packaging (taping) in order to ensure automated further processing.

Question 18

How does the calculation of the cutting gap for precision parts influence the electrical conductivity of connectors?

Accepted Answer

When processing copper alloys, the cutting gap between the punch and die is decisive for the ratio of smooth cut to fracture zone. Mechanically, too large a gap leads to an increased tear-off angle, which reduces the effective contact area. Electrically, this increases the contact resistance, which leads to thermal overload in high-current applications; we therefore keep the cutting gap constant at 5 - 8 % of the material thickness.

Question 19

Which thermal influences on tool precision are critical in the high-speed punching of disk packs?

Accepted Answer

At high stroke rates in the series production of technical stamped parts, heat is generated in the active tool part due to the shearing action. The thermal expansion of the punches leads to a shift in the tolerance position, which jeopardizes the plane parallelism of the individual sheets in the stack. The consequence is a reduced efficiency of the electric motor due to magnetic leakage losses, which is why Karl Naumann GmbH uses actively cooled tools for these applications.

Question 20

Why is the fatigue strength of resilient stamping components made of beryllium copper limited?

Accepted Answer

The starting point is the microstructure of the material after work hardening and thermal curing. Mechanically, notch effects at the punching edges lead to crack initiation under dynamic load. In contrast to standard spring steel, beryllium copper is more sensitive to surface defects, which is why reworking (vibratory grinding) is essential to increase the service life and prevent premature spring breakage.

Question 21

What are the no-go criteria for the surface finishing of stamped parts for soldering applications?

Accepted Answer

When using gold-plated or silver-plated contacts, no residues of stamping oils or drawing grease may remain on the surface. Chemically, these layers prevent intermetallic phase formation during soldering. A technical no-go is the use of lubricants containing chlorine in the Karl Naumann GmbH stamping shop, as these can provoke corrosion damage under the galvanic layer.

Question 22

How do we prevent the mixing of alloy types in contract stamping for industrial requirements?

Accepted Answer

The starting point is the material flow in the punching line with frequent material changes (e.g. change from brass to bronze). Based on logic, insufficient cleaning cycles of the peripheral devices for stamping presses lead to material carryover. The consequence would be an incorrect alloy composition in the batch, which violates the electrical specification; we therefore use a batch-managed ERP system for seamless traceability.

Question 23

Which maintenance cycles for press tools are mandatory when processing spring steel?

Accepted Answer

The maintenance cycle is based on the number of strokes and the abrasive effect of the spring steel on the cutting edges. Mechanically, wear leads to an increase in burr height, which has a negative effect on the mechanical preload of spring contacts. We prescribe an inspection of the active parts after 500,000 strokes at the latest in order to guarantee the quality standards of Karl Naumann GmbH in the long term.

Question 24

How is fault analysis carried out during the punching process in the production of micro-punched parts?

Accepted Answer

The analysis uses high-resolution force-displacement diagrams of the press control system to detect irregularities in the material feed or tool breakages. Mechanically, the smallest particles in the tool lead to imprints on the 0.2 mm thin parts. The result is an immediate production stop due to the system connection of punching modules in order to minimize rejects of high-quality precious metals.

Question 25

What are the requirements for testing the surface roughness after punching EMC shielding plates?

Accepted Answer

The technical starting point is the contact surface of the shielding housing to the circuit carrier. Mechanically, excessive roughness prevents a complete seal against high-frequency radiation. Karl Naumann GmbH uses tactile or optical measuring methods, whereby Rz values > 6.3 µm are considered an exclusion criterion for critical shielding applications.

Question 26

To what extent does quality assurance in accordance with DIN ISO 9001 ensure process consistency for insert die-cut parts?

Accepted Answer

The standard forms the framework for validating the process steps, in particular the manual or automated insertion processes. Mechanically, the tolerance chains between the insert and the punching tool must be precisely coordinated. Incorrect positioning decisions lead to tool damage, which is why a sensory position check is an integral part of our QA strategy.

Question 27

How are technical variants such as solder tags or connectors specified for component assembly?

Accepted Answer

The specification includes the geometric tolerances in accordance with DIN ISO 2768 and the definition of the galvanic layer thicknesses. Electrically, the current carrying capacity (e.g. for busbars) must be ensured by the material cross-section. For procurement at Karl Naumann GmbH, the provision of step files and the specification of the maximum permissible press-in forces is a prerequisite for design approval.

Question 28

What influence does the grain size have on the forming behavior of stainless steel stampings?

Accepted Answer

The microstructure of the stainless steel determines the uniform elongation when forming thin wall thicknesses. Mechanically, a coarse grain leads to the so-called 'orange peel effect', which reduces the mechanical strength. This is an exclusion criterion for Karl Naumann GmbH medical instruments, as the rough surface has a negative effect on sterilizability; we therefore require materials with a grain size finer than class 7 according to ASTM.

Question 29

Why is compliance with the standardized dimensioning of stamped-bent parts for surgical grippers critical?

Accepted Answer

The starting point is the functional tolerance chain in the mechanical assembly of the instrument. Mechanically, deviations in the angular tolerances lead to uneven force closure of the gripper jaws. The consequence is a failure of the instrument during the engagement; therefore the dimensioning is carried out according to narrow functional dimensions that exceed the standard tolerances of DIN ISO 2768.

Question 30

What are the no-gos in terms of biocompatibility when finishing the surface of stamped parts?

Accepted Answer

In medical technology, no process-related additives such as oils containing sulphur may be pressed into the material surface. Chemically, these substances can cause toxic reactions even after cleaning. A technical no-go is the use of non-certified lubricants in the stamping shop, as this jeopardizes the validation of the entire medical device.

Question 31

How is the avoidance of punching waste realized in cleanroom production?

Accepted Answer

The starting point is the clean separation of good parts and stamped parts within the tool. Particles carried over mechanically can scratch the surface of functional components or contaminate the cleanroom class. Karl Naumann GmbH uses encapsulated extraction systems directly at the interface of the punch-laser combination to guarantee a particle-free environment.

Question 32

Which repair strategies for active parts are necessary for micro stamped parts for implants?

Accepted Answer

Due to the extreme accuracy requirements for components around 0.2 mm, preventative regrinding of the punches is essential. Mechanically, minimal edge wear leads to micro burrs that could cause inflammation in the human body. We use automated regrinding cycles for cutting tools to ensure consistent edge quality without manual errors.

Question 33

Which inspection intervals for series tools must be observed for high quantities in medical technology?

Accepted Answer

The intervals are based on a risk analysis (FMEA) and the material hardness of the stainless steel used. Mechanically, an initial sample inspection of the critical dimensions is carried out after each production batch. At Karl Naumann GmbH, we also carry out an intermediate inspection every 50,000 strokes in order to identify trends in dimensional accuracy at an early stage.

Question 34

How do thermal influences on tool precision affect the production of valve plates?

Accepted Answer

During the production of the smallest valve components, temperature fluctuations in the factory hall lead to dimensional changes in the micrometer range. Mechanically, this changes the stroke of the valve flap, which affects the flow rate. We use air-conditioned production areas to keep the process capability of stamping for these highly sensitive components constantly above 1.67.

Question 35

Why is corrosion protection for electroplated stamped parts critical for reusable instruments?

Accepted Answer

The starting point is the resistance of the coating (e.g. nickel-plated or gold-plated) to aggressive cleaning media and autoclaving cycles. Chemically, insufficient coating thickness or porosity leads to infiltration corrosion. The consequence is the loss of instrument function; Karl Naumann GmbH therefore validates the coating thickness using X-ray fluorescence analysis on each production batch.

Question 36

What are the documentation requirements for technical component assembly with stamped parts?

Accepted Answer

The documentation must enable seamless traceability from the coil to the finished component in accordance with the MDR (Medical Device Regulation). Based on logic, this includes the assignment of melt numbers to the respective production periods. Without this seamless chain, the procurement of technical stamped parts for Class II and III products from us is impossible.

Question 37

How are technical variants such as anchor plates or housing parts for medical technology specified?

Accepted Answer

In addition to the geometry, the specification defines the permissible influence of the punching process on the edge zone. Mechanically, the hardness in the cutting zone must not exceed the basic hardness by more than 15 % in order to avoid brittle fracture. Karl Naumann GmbH requires detailed test reports on the microstructure and surface quality for these components.

Question 38

How is economical stamped part production ensured with large batch sizes for hinge components?

Accepted Answer

The technical starting point is the use of progressive dies with multiple cavities to maximize stroke utilization. Mechanically, this allows the simultaneous execution of punching, bending and embossing in one cycle. The limit lies in the complexity of the tool mechanics; at Karl Naumann GmbH we optimize the tool design so that cycle times of less than 1 second can be achieved with material thicknesses of up to 3 mm.

Question 39

What role does material efficiency in stamping technology play in the production of fittings?

Accepted Answer

Waste is minimized by optimizing material utilization through nesting in the belt layout. Mechanically, however, a minimum web width must remain between the parts to ensure belt stability when the belt is fed into the presses. If the web width is too small, the belt will break; we calculate this limit value precisely based on the tensile strength of the cold-rolled strip.

Question 40

Why is it essential to avoid burr formation when punching visible design fittings?

Accepted Answer

In the case of visible parts made of aluminium or stainless steel, a mechanical burr leads to a risk of injury and impairs the feel. In addition, the burr interferes with subsequent surface finishing (e.g. anodizing or powder coating), as the sharp edges cause the coating to flake off. Karl Naumann GmbH therefore relies on fine blanking technology to achieve virtually burr-free cut edges.

Question 41

What are the no-gos for the specification of stamped and bent parts in fastening technology?

Accepted Answer

A technical no-go is disregarding the rolling direction of the material with tight bending radii. Mechanically, bending at right angles to the rolling direction often leads to cracks at the bending edge for sheet thicknesses of 2 mm or more. This massively reduces the load-bearing capacity of the fitting; we therefore integrate the orientation of the component in the coil layout as a mandatory design specification.

Question 42

How does the wear resistance of galvanized steel strip affect the service life of the guide rails?

Accepted Answer

The starting point is the mechanical friction between the stamped parts during operation. In chemical-mechanical terms, the zinc coating serves as protection for the victim, but must not be completely removed from the functional surfaces during the stamping process. The consequence would be premature red rust; Karl Naumann GmbH therefore only uses materials with a certified zinc coating in accordance with DIN EN 10130.

Question 43

Which maintenance strategies for active parts are economical for high stroke rates in the furniture industry?

Accepted Answer

We use repair strategies for active parts that are based on monitoring the tool load. Mechanically, punches are automatically scheduled for regrinding when a defined wear mark is reached (e.g. 0.2 mm edge rounding). This prevents an unplanned production stop and ensures that the production tolerances for punched parts are maintained over millions of cycles.

Question 44

How is process stability ensured in the long-term production of mounting plates?

Accepted Answer

The connection to automatic forming machines with automatic strip thickness control compensates for fluctuations in the primary material. Mechanically, thickness fluctuations lead to varying bending errors; Karl Naumann GmbH uses adaptive control systems that readjust the bending punch path in real time to keep the angular accuracy within ±0.5°.

Question 45

What are the requirements for checking the plane parallelism of spacers?

Accepted Answer

The starting point is the flat support in the assembly. Mechanically, an uneven washer leads to undefined play in the mechanics, which results in noise (rattling). We test these components using digital measuring projectors, whereby flatness deviations of more than 0.02 mm per 10 mm length lead to exclusion.

Question 46

Why is the technical design of stamped parts crucial for automated assembly?

Accepted Answer

The design must provide for gripping zones and symmetry interruptions that are recognizable for the feeding technology for stamped-bent parts. Based on logic, missing features lead to incorrect assignments in the assembly machines. During the engineering phase at Karl Naumann GmbH, we therefore carry out an assembly simulation in order to validate the process reliability of the subsequent production line.

Question 47

How are technical variants such as lock washers or perforated plates specified for the furniture industry?

Accepted Answer

In addition to the dimensions, the specification includes the required spring rate for locking elements. Mechanically, this is achieved through the choice of material (e.g. spring steel) and the precise control of the degree of forming for complex stamped and bent parts. For procurement, the presentation of a 3.1 certificate in accordance with DIN EN 10204 for the primary material is standard for us.

Question 48

How does the choice of stainless steel stampings affect corrosion resistance in ventilation systems?

Accepted Answer

The starting point is the chemical resistance of the material to condensate and cleaning agents. Mechanically, the material (e.g. 1.4301 or 1.4404) must retain its passive layer despite work hardening during stamping. At Karl Naumann GmbH, we ensure that the thermal load remains so low through optimized cutting parameters that no chrome depletion occurs at the edges, which would otherwise lead to pitting.

Question 49

What are the fatigue strength requirements for spring-loaded punching components for non-return flaps?

Accepted Answer

The components are exposed to a high number of load changes due to air currents. Mechanically, residual stresses in cold-formed stamped parts lead to fatigue fractures if there is insufficient relaxation. The consequence is a system failure; we validate the service life by means of fatigue tests, whereby a minimum number of cycles of 1 million without cracking is defined as the technical limit.

Question 50

What are the no-gos when specifying heat shields made from aluminum thin sheet?

Accepted Answer

A technical no-go is the use of alloys with a low melting point or insufficient reflection of radiant heat. Thermally, this can lead to deformation of the shield and thus to contact with hot pipes. Karl Naumann GmbH therefore prescribes the testing of plane parallelism even after thermal cycling in order to permanently ensure the protective function.

Question 51

Why is process monitoring in the punching tool critical in the production of fins for heat exchangers?

Accepted Answer

With material thicknesses of around 0.2 mm, the smallest deviations in the material flow in the punching line lead to wrinkling or cracks in the collar. Mechanically, this massively impairs the heat transfer to the tube. Using tool sensors for quality assurance, we immediately detect shape deviations in the micrometer range so as not to jeopardize the energy efficiency of the HVAC components.

Question 52

What maintenance cycles are required for press tools when processing galvanized hot-rolled strip?

Accepted Answer

Hot-rolled strip has a rougher surface than cold-rolled strip, which increases abrasive wear on the cutting edges. Mechanically, this leads to burr formation more quickly, which increases the flow resistance in ventilation ducts. We halve the regrinding cycles of cutting tools when using hot-rolled strip compared to cold-rolled strip in order to maintain process stability at Karl Naumann GmbH.

Question 53

How is the validation of punching processes for fire dampers carried out?

Accepted Answer

The focus is on the mechanical release reliability of the punching components under load. Mechanical functionality is tested after artificial ageing and salt spray testing. One exclusion criterion is any form of jamming due to dimensional changes, which is why we specify the tightest tolerances (±0.02 mm) for the central bearing points of the stamped parts.

Question 54

What role does the surface finishing of stamped parts (galvanized/powder-coated) play for outdoor installation?

Accepted Answer

The finish must provide complete edge protection, as the punched edge is unprotected with standard galvanizing. Otherwise white rust will quickly form here chemically. For these applications, Karl Naumann GmbH recommends the use of pre-coated steel strip with high edge sealing or subsequent piece galvanizing in order to achieve the required service life of 20 years.

Question 55

To what extent does the degree of forming of complex stamped-bent parts influence the assembly of fan housings?

Accepted Answer

High degrees of deformation lead to a significant springback of the material. Mechanically, this means that housing parts cannot be assembled without tension, which increases vibrations and noise emissions. At Karl Naumann GmbH, we use FEM simulations in advance to compensate for the springback and ensure a perfect fit of the industrial stamped parts.

Question 56

Which test parameters are relevant for quality assurance in the stamping shop for large-format housing parts?

Accepted Answer

In addition to dimensional accuracy, the focus is on freedom from twisting. Mechanical stresses in the sheet metal cause the component to twist unacceptably after removal from the tool. We measure the torsion on granite measuring tables; deviations of more than 1 mm over a component length of 500 mm lead to the immediate rejection of the batch.

Question 57

How does Karl Naumann GmbH procure technical variants such as louvre packs or carrier parts for HVAC systems?

Accepted Answer

Procurement requires a detailed specification of the material quality (e.g. in accordance with DIN EN 10131) and the surface finish. As these parts often use interfaces of the punch-laser combination, the programs must be compatible for both manufacturing processes. Karl Naumann GmbH supports technical purchasers here by providing manufacturing DFA analyses for cost optimization.

Question 58

What influence does the material thickness of 0.2 mm have on the precision of gear stampings?

Accepted Answer

With extremely thin materials, the ratio of sheet thickness to cutting gap in the sub-micrometer range is crucial. Mechanically, any deviation leads to unclean flanks and impairs the rolling behavior in the movement. Karl Naumann GmbH uses fine blanking technology with specially ground carbide tools to reliably maintain tolerances in the range of ±0.005 mm.

Question 59

What requirements for plane parallelism must anchor plates in mechanical movements fulfill?

Accepted Answer

The anchor plate serves as the basis for the bearing of the finest axles. Mechanically, a lack of flatness leads to an axial offset, which increases friction and destroys the accuracy of the watch. The consequence is an exclusion criterion during the final inspection; we therefore check these parts for flatness deviations of less than 0.002 mm using non-contact laser interferometry.

Question 60

What are the no-gos when choosing stainless steel stampings for enclosure components?

Accepted Answer

A technical no-go is the use of ferritic steels, as these are magnetic and can affect the balance of the watch. Mechanically/physically, the material must also be highly polishable. Karl Naumann GmbH only uses certified anti-magnetic alloys (e.g. 1.4435) in order not to jeopardize the functional reliability of the movement.

Question 61

Why is it critical to avoid burr formation when punching precision springs?

Accepted Answer

Burr formation on spring contacts or pawls leads to uncontrolled friction and potential chip formation inside the closed housing. Mechanically, these chips can block the sensitive mechanics. We use electrochemical deburring after the stamping process to ensure absolute edge cleanliness and defined edge rounding at Karl Naumann GmbH.

Question 62

How is the process capability of stamping validated in the production of micro stamped parts?

Accepted Answer

Validation is carried out using series of measurements on high-resolution measuring microscopes with statistical evaluation of the shape and position tolerances. Mechanically, the Cpk value is set at over 1.67, as the smallest process drifts immediately lead to functional failures. At Karl Naumann GmbH, real-time monitoring of the stroke force is an integral part of quality assurance in the stamping shop for very small parts.

Question 63

What maintenance strategies are required for active parts when processing hard materials such as spring steel?

Accepted Answer

Due to the minimal dimensions of the punches (often less than 0.5 mm in diameter), the risk of punch breakage is extremely high. Mechanically, minimal wear immediately leads to dimensional deviations. We rely on preventive maintenance and use optical wear measurement after each batch in order to polish or replace the active parts at Karl Naumann GmbH in good time.

Question 64

What role does surface roughness after punching play in the optical quality of visible parts?

Accepted Answer

Visible parts often have to be electroplated or polished after stamping. Mechanically, the punched surface acts as a base; coarse structures (Rz > 2) cannot be removed economically by polishing. We optimize the cutting parameters so that a mirror finish quality of the cut surfaces is already prepared in the tool in order to minimize reworking costs at Karl Naumann GmbH.

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We deburr stamped parts as required and feasible

BRIEF INFO to our punched parts

Which materials are suitable for stamped parts in large quantities?

What processes are there for surface finishing of stamped parts?

What quantities and batch sizes are economical for stamped parts with progressive dies?

Can I buy punched parts that are delivered ready for assembly?

What are the advantages of series production of stainless steel stamped parts?

For which industries does Karl Naumann supply stamped parts?

What advantages does Karl Naumann offer as a stamped parts supplier?

Flat, curved or shaped precision stamped parts

Stamped parts for the automotive industry

Stamped parts for the electrical industry

Stamped parts for medical technology

Stamped parts for the furniture industry

Stamped parts for the watch industry

Stamped parts for ventilation and air conditioning technology

Stamped parts for fastening and connection technology

Stamped parts for energy technology

Stamped parts for mechanical engineering

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