Lämneå Bruk is a trusted full-service supplier, offering everything from single machines to fully integrated production lines and entire factories for the manufacturing of welding, stainless steel, high-carbon, and low-carbon wire. The Swedish company is committed to flexibility and engineering state-of-the-art machines tailored to specific production needs. By focusing on intelligent customization and user-friendliness, Lämneå Bruk ensures maximum efficiency and profitability for its global customers.

Understanding the critical role of reliability and efficiency in spring wire production, Lämneå Bruk provides a comprehensive range of specialized equipment to optimize every stage of the high-carbon wire manufacturing process. Spring wire demands precise handling and processing to achieve the mechanical properties required for automotive, industrial, and consumer applications.

Optimized wire handling and preparation

Efficient spring wire processing starts with proper material handling. That's why Lämneå Bruk offers both vertical and flyer payoffs, designed to ensure smooth, snarl-free operation while simplifying coil handling. The vertical payoff is particularly effective for high-carbon wire grades, as it minimizes stress concentrations that could lead to premature failure during subsequent drawing operations.

To achieve optimal wire quality and reduce environmental impact, the company provides highly efficient mechanical descaling solutions. The bending descaler and sandpaper machine effectively remove residual scale and surface oxides from the wire surface – critical for spring wire applications where surface defects can become stress concentration points. This preparation is essential since spring wire must withstand repeated loading cycles without fatigue failure.

Further enhancing the wire drawing process, the cleaning and coating machine applies a superior lubricant coating. For high-carbon spring wire, this lubrication is particularly important as it reduces drawing forces and prevents surface damage that could compromise the wire's fatigue resistance.

Advanced wire drawing technology

For precise diameter reduction in spring wire production, Lämneå Bruk's straight and loop line drawing machines feature an advanced double cooling system – an essential advantage when working with high-carbon grades that generate significant heat during deformation. The specially designed V-groove blocks create an expanded surface area for superior heat dissipation, preventing block overheating that could affect wire properties.

Each drawing block is coated with zinc on the inside and tungsten carbide on the outside, further improving cooling efficiency and durability. This combination is particularly beneficial for spring wire, where consistent mechanical properties across the entire coil length are crucial. The adjustable tilted table design offers added flexibility, allowing operators to regulate both height and angle with ease while maintaining precise wire path control.

The system automatically maintains the block wire height at a set level, adjustable via the operator control system. This automation is especially valuable in spring wire production, where maintaining consistent reduction ratios helps preserve the material's spring characteristics.

Superior lubrication technology

A standout innovation in the wire drawing process is Lämneå Bruk's unique round soap box design. Unlike traditional rectangular soap boxes, its rounded stirrer ensures complete 360° soap coverage, delivering superior lubrication and significantly reducing friction. This enhanced lubrication protects the high-carbon wire from overheating, allowing for higher drawing speeds while maintaining the precise surface finish required for spring applications.

The improved lubrication also extends die life – critical when working with abrasive high-carbon steel grades – and enables tighter dimensional tolerances essential for spring wire quality. The reduced friction helps preserve the wire's internal structure, maintaining the balance between strength and ductility needed for optimal spring performance.

Revolutionary “No Twist Coiler” technology

Lämneå Bruk's game-changing “No Twist Coiler” (NTC) is revolutionizing spring wire production. Designed to produce perfectly pattern-laid, twist-free wire coils of up to 2.5 metric tons, the NTC addresses one of the biggest challenges in spring manufacturing: wire twist that can cause inconsistent spring characteristics.

The NTC eliminates the need for additional straighteners by reversing the pre-twist and maintaining equal back tension throughout the coiling process. The wire drum remains stationary on the floor while uncoiling over the top, guiding the wire through a specially designed conduit into the coiling machine. This process ensures that spring manufacturers receive wire with consistent mechanical properties without twists.

For spring production, this translates to consistently high-quality springs with predictable load characteristics while significantly reducing wire consumption per spring – every meter of wire is fully utilized without waste. Additionally, the NTC minimizes production downtime by reducing the frequency of stops, leading to greater overall efficiency in both wire production and subsequent spring manufacturing.

The pattern-laid coiling also makes it easier for spring manufacturers to handle the wire, as it uncoils smoothly without tanglinga common problem that can cause production delays and quality issues in spring manufacturing operations.

Complete solutions for spring wire excellence

With decades of experience in high-carbon wire production, Lämneå Bruk understands that spring wire requires more than just dimensional accuracy. It demands consistent mechanical properties, superior surface quality, and reliable handling characteristics. Their integrated approach ensures that every aspect of the production line works together to deliver wire that meets the demanding requirements of modern spring applications.

Lämneå Bruk AB

61273 Ljusfallshammar, Sweden

Contact person is Ann Kathrin Hassenburs

Tel.: +46 12223200

info@lamnea.se

www.lamnea.com