Device for Manufacturing Closed Profile Semi-finished Products

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This invention describes a device for manufacturing closed profile semi-finished products (such as metal tubes or profiles) using inductive longitudinal seam welding. The key feature is an impeder core made from a soft-magnetic polymer composite, which lacks a traditional protective casing and instead uses a targeted protective component on the side facing the welding zone.

Use CasesContent extracted from patent full text and abstract with AI.

• Manufacture of welded steel or aluminum pipes for construction industry
• Production of closed profile tubes for automotive parts
• Fabrication of structural components in mechanical engineering
• Creation of custom metal profiles for furniture or appliance manufacturing

BenefitsContent extracted from patent full text and abstract with AI.

• Improved welding quality due to optimized magnetic properties of the impeder core
• Lower production costs by eliminating the need for a full protective casing
• Potentially longer lifespan and resistance to damage at the welding interface due to selective protection
• Enhanced efficiency and flexibility in the production of closed profile metal products

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Inventors & Applicants

Patent Abstract

Vorrichtung zur Fertigung von geschlossenen Profilhalbzeugen mittels induktivem Längsnahtschweißen, aufweisend einen Impederkern (1) und einen Induktor (2), der in ein Profilhalbzeug (R) einführbar ist und wobei der Induktor (2) das Profilhalbzeug (R) zumindest bereichsweise während dem Fügeprozess umhüllt und eine Fügezone am Profilhalbzeug (R) bildet, dadurch gekennzeichnet, dass der Impederkern (1) aus einem Weichmagnet-Polymer-Komposit besteht und keine, den Impederkern (1) umhüllende Schutzhülle aufweist, wobei zumindest auf der in Richtung der Fügezone weisenden Seite des Impederkerns (1) eine Schutzkomponente (3) angeordnet ist.