Preliminary Research On Sheet Metal Drawing Properties Of Fiber Orientation Distribution Along The Thickness Direction

The existence of fibrous tissue, the metal material mechanics performance has obvious anisotropy of the use of mechanical parts, properties and processing technology will be ignored influence. Deep drawing by fibrous tissue orientation effect colloids, correct understanding and using the material fiber direction, is material processing engineering need to study the one of important issues. Sheet Metal deep deformation, the important parameters of drawing coefficient associated with the directionality of the fibrous tissue.The main work of this paper includes:the design and manufacture of die diameter27.5mm, with a blank holder drawing test mold;Useing two material,Q235steel and5052aluminum alloy, producing the sheet billet with the direction of fibers in the in-plane and along the thick distribution in two ways, a range of40～50mm from nine kinds of diameter, a total of about200. Reference to the national standard, using the direct method, in hydraulic machines was carried out without flange and the flange drawing test, get6sets of experimental data. The result is:(1) without flange drawing, Q235steel fiber tissue along the thickness direction of distribution and fibrous tissue in the in-plane distributions are compared, the maximum drawing height smal about25%, while the limit drawing ratio small10%.5052aluminum alloy fiber tissue along the thickness distribution and fibrous tissue in the in-plane distribution,The drawing properties are quite:(2) with a flange drawing, Q235steel fiber tissue along the thickness in the plate surface to the distribution of the fibrous tissue distribution compared to the maximum relative height H/d16%-18%smaller.5052aluminum alloy fibrous tissue along the thickness of the fibrous tissue to the distribution with the corresponding distribution in the plate surface, compared to the maximum relative height H/d16%-18%smaller.This first-time access to the fiber direction along the thickness distribution of limit drawing coefficient data, and Q235steel plate,5,052aluminum plate information fibrous tissue in in-plane distribution data for the comparative research and analysis, Verify the relations both of direction of fibrous tissue and lugs. Research shows that, on limit drawing height, fiber orientation along the thickness distribution and fiber orientation in the in-plane distribution difference. Fibrous tissue along the thickness direction distribution drawing performance is poor in the in-plane distribution along the thickness of fibrous tissue; material distribution drawing is more difficult; with no flange drawing, and fibrous tissue in the in-plane distribution sheet marked " lug " phenomenon, fibrous tissue along the thickness direction distribution sheet the edges of parts without apparent" lug " phenomenon.The Data from this study, preliminary quantitative answers the difference between the fiber direction along the thickness distribution and in the plane distribution, enrich the content of sheet metal deep drawing formability, can provide reference for sheet metal processing practice.