WCA May 2010

news

Chinese company Anbao (Qinhuangdao) Wire & Mesh Co Ltd is a manufacturer and exporter of spring steels in carbon steel, high carbon spring steel, alloy and stainless steel. The surface can be galvanized or phosphated (ungalvanized), and can be heat-treated or oil tempered. Anbao can provide non-mechanical spring wire (#45, #60, #70), mechanical spring wire (70# or 65MN), carbon spring wire, oil tempered and music spring wire, mainly as per Din17223-1, EN10270-1; ASTM A227, ASTM A228, ASTM A313; JIS G352, JIS G3522 and JIS G4314. Spring steel and wire range

Packing can be in coils or on formers, 5kg to 1,000kg depending on size.

Anbao (Qinhuangdao) Wire & Mesh Co Ltd – China Fax : +86 335 3870760 Website : www.anbao.com

Chipless forming rolls

❍ Chipless forming technology

Precision rolls for the chipless forming technique are more than just standard items. Reliability and service life depend on material, geometry and the accuracy of production. Therefore it is essential for the design of the rolls to find the ideal material constellation and geometry for every application. Kämpfer Würz has considered the increased requirements of users of rolling tools and extended the manufacturing possibilities of roll machining by a considerable step. A few years ago, users of rolling tools for precision roll techniques had to use carbide rolls with a maximum diameter of 200mm. By investing in new grinding technology Kämpfer Würz is now able to machine cold rolls with carbide tipping up to 600mm diameter, and a maximum length of 2,500mm with accuracy of <2µmm. For manufacturers of carbide rolls for large dimensions further adaptations are important to achieve an optimal composite between roll base body and carbide ring, by the precise internal grinding of these large carbides. Here accuracies of shape with a cylindrical form of <3µmm are essential. Modern CNC machines permit the machining of complex forms and geometries that allow large dimensioned profiles to be machined with highest precision into large and heavy rolls. Kämpfer Würz can also produce roll barrels with convex or concave contours. Kämpfer Würz Umformtechnik GmbH – Germany Fax : +49 2775 9545 95 Email : kwrf@kaempfer.de Website : www.kaempfer.de

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Wire & Cable ASIA – May/June 2010