Induction Welding Device for Closed Metal Profiles Using Soft-Magnetic Polymer Composite Impeders

Simple SummaryContent extracted from patent full text and abstract with AI.

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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Patent Abstract

Device for manufacturing closed profile semi-finished products by means of inductive longitudinal seam welding, comprising an impeder core (1) and an inductor (2) which can be inserted into a profile semi-finished product (R) and wherein the inductor (2) envelops the profile semi-finished product (R) at least in regions during the joining process and forms a joining zone on the profile semi-finished product (R), characterized in that the impeder core (1) consists of a soft magnet-polymer composite and has no protective sheath enveloping the impeder core (1), wherein a protective component (3) is arranged at least on the side of the impeder core (1) pointing in the direction of the joining zone.