Alfred Kron GmbH from Solingen is an experienced B2B manufacturer of high-precision formed springs – Kron is your supplier for spring elements made of spring steel strip that serve as reliable energy stores and functional components in machines, structural elements, electrical devices, automotive components and industrial systems of all kinds. With over 120 years of experience, Alfred Kron combines traditional know-how with state-of-the-art manufacturing technology to produce individual formed springs and stamped-bent parts with the highest precision from Solingen.
Formed springs are produced through the precise stamping and bending of spring steel strip. Their properties – spring force, restoring force, stroke length and fatigue strength – depend on the material choice and the exact shaping. Use our bending force calculator for formed springs. Typical materials are:
- Spring steel strip C75: high tensile strength, excellent spring force
- Stainless steel 1.4310: corrosion-resistant, ideal for hygiene areas
- Wrought copper alloy CuSn6: electrically conductive, for contact springs in electronics
Advantages of formed springs directly from the manufacturer:
- Space-saving spring element: energy storage through compact design
- High precision through production on modern stamping-bending machines from Bihler RM40 K
- Reliability: long service life with consistently high performance
Formed springs made to drawing by Alfred Kron are used in numerous industries – from mechanical engineering, automotive and the furniture industry through electrical engineering to medical technology. Through in-house toolmaking and a high level of vertical integration, fast delivery times and tailor-made solutions are guaranteed.
Send us your inquiry for formed springs made to drawing free of charge now!
Formed springs clip for lights cover
Formed springs retaining spring with safety bail
Formed Springs – Production, Materials, Applications and Advantages
Spring elements made of steel strip in modern technology
Formed springs, also known as stamped-bent springs or flat springs, are often flat-formed spring elements made of high-strength spring steel strip. They serve as energy stores, retaining or functional components in machines, devices and precision applications. Alfred Kron GmbH produces formed springs with the highest precision for industry, automotive, electrical engineering, medical technology and the furniture industry.
Practical Example
For a customer from the electronics industry, we produce clamping springs made of 0.9 mm spring steel strip C75 S, which are responsible for the ideal heat dissipation of semiconductors onto the heat sink. The parts are hardened in-house and coated black against corrosion by our partner for zinc flake coating.
We produce "retaining springs" for an engine manufacturer, for secure axial and radial geometric fixing of magnets in electric motors with resilience to oscillation and vibration.
For a customer from automotive interiors, we produce metal springs made of shape memory wire. Under the influence of temperature, these reliably return to their original geometry.
What Distinguishes Formed Springs – and What Are They Made Of?
Formed springs are spring elements made of spring steel strip, in material thicknesses of 0.3 to 1.5 mm, produced through precise stamping and bending. In contrast to wire or coil springs, they offer:
- Diverse additional functional possibilities, such as spring, hook, clip, retaining and contact functions, which can be realized through cutting and forming processes
- High reliability through high-strength materials, such as high-alloy spring steel strip, for example V2A according to EN10270-3 (1.4310) or unalloyed and hardenable spring steel strip
- Adjustable spring force and stroke length through the choice of material thickness and material grade
Materials: spring steel strip C75S, stainless steel 1.4310, wrought copper alloys CuSn6
Manufacturing Technologies
Metalworking:
- Precise stamping and bending of spring steel strip
- CNC machining for complex shapes
- Surface coating: galvanizing, nickel-plating, Delta Seal, Delta Tone
- In-house finishing: hardening and tempering, vibratory grinding (trowalizing)
Hybrid and special solutions:
- Integration of plastic components or contact springs
- Design and production to drawing, CAD data and customer requirements
Toolmaking & prototype development:
- In-house toolmaking for fast product realization
- Prototype production before series production
- High repeatability in large series
Properties of Formed Springs
- High stability and load capacity
- Low wear through precise technical design
- Low tolerances for optimal function
- Assured quality through complete quality inspections of all dimensions and specifications, using Babtec CAQ and Keyence measuring projectors, certified to IATF 16949 and ISO 14001
- Versatilely adaptable in geometry, material, coating for special requirements
Areas of Application
- Automotive: retaining elements, spring mechanisms, contact springs
- Electrical engineering: high-current contacts, switching springs
- Mechanical engineering: precision assemblies, sliding and guide springs
- Furniture industry: compact retaining and spring elements
- Medical technology & precision engineering: precision clips, hygienic spring elements
Alfred Kron – Your Partner for Formed Springs
As a family business from Solingen with over 120 years of experience, we produce formed springs from the first drawing to large series from a single source – with in-house toolmaking, an in-house hardening shop and certified processes to IATF 16949.
- Over 120 years of experience in stamping and stamping-bending technology
- Precision production from individual parts to series production
- State-of-the-art manufacturing technologies on Bihler stamping-bending machines
- Short delivery times thanks to in-house toolmaking
- Individual solutions for all industrial requirements
Formed springs mounting spring for LED lights
Formed springs ground contact spring
FAQ
What are formed springs and how do they work?
Formed springs (also called flat springs or stamped-bent springs) are flat spring elements produced from spring steel strip through precise stamping and bending. In contrast to classic coil springs, they impress with an extremely compact design and serve in machines and devices as reliable energy stores, retaining elements or contact components.
Which materials are suitable for the production of spring elements from steel strip?
The material choice depends on the specific application. For high tensile strength and spring force, we frequently use spring steel strip C75. In hygiene or damp areas, corrosion-resistant stainless steel 1.4310 is used, while electrically conductive wrought copper alloys (such as CuSn6) are ideal for contact springs in electrical engineering. Special solutions such as shape memory wire are also possible.
In which industries are formed springs used?
Thanks to their versatilely adjustable spring force and stroke length, formed springs are used across industries. The main focuses are the automotive industry (e.g. interior or engine technology), electrical engineering (for high-current contacts), mechanical engineering, medical technology and the furniture industry.
What advantages does formed spring production at Alfred Kron offer?
With over 120 years of experience, we combine traditional know-how with state-of-the-art CNC stamping-bending technologies. Through our in-house toolmaking and our prototype development, we guarantee not only the highest precision and durability in series production, but also particularly fast and flexible delivery times for tailor-made special solutions.
Conclusion
Formed springs from Alfred Kron are precise energy stores and functional components for demanding industrial applications. With high-quality materials, state-of-the-art production and individual adaptation, Alfred Kron GmbH delivers durable, reliable and tailor-made solutions – from development to series production.
Request formed springs "Made in Germany" free of charge now!
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