Heinz Berger Maschinenfabrik GmbH & Co. KG
Booth number: EH102-J16
www.bergergruppe.de
About us
The Berger Gruppe is a family-owned company from Wuppertal (Germany) and develops and builds CNC-controlled grinding machines and robot cells for various industries such as the cutlery, tool, foundry and automotive industries.
Address
Kohlfurther Brücke 69
42349 Wuppertal
Germany
E-mail: info@bergergruppe.de
Phone: +49 202 247 42-0
Internet: www.bergergruppe.de
Contact person:
Sales manager Pierre-François Lemaire
sales manager
E-mail: sales@bergergruppe.de
Phone: +49 202 247 42 0
Strip edge processing by metal-cutting to optimize the tube weld seam
The basic strip material is usually longitudinally split strip (slit strip). Only <35% of the edges are really cleanly cut, the larger portion is broken off and is not clean, i.e. irregular in terms of straightness, angle and structure, and coatings may interfere with welding. The thicker the wall thickness and the smaller the tube diameter, the greater the V-angle at which the round pipe edges meet. The cross section to be welded that collides with each other becomes smaller and smaller and thus the area to be liquefied necessarily larger. As a result, the upsetting zone and the upsetting force occurring immediately after welding become larger. This results in ever greater weld seam elevations, which have to be planed off at the top and inside surface in a very time-consuming process.
With strip edge trimming by metal-cutting the edges become evenly clean and straight and also have their inner structure on the surface. The edges are machined at an adjustable angle so that the V-angle for welding is reduced and coatings on the strip edge are removed. The colliding cross section of the edges is maximized, so that a smaller volume of material has to be liquefied.
