Dissimilar material weld joint formed by joining iron type material and aluminum type material, and weld joining method
First Claim
1. A dissimilar material weld joint formed by joining an iron based material and an aluminum based material, wherein a surface of the iron based material engages a surface of the aluminum based material, the welding joint comprising:
- voids formed in said iron based material at a predetermined interval along a weld line, said voids extending from the surface of the iron based material that engages the surface of the aluminum based material to an opposite surface of the iron based material;
a bead comprising an aluminum welding material weld joining said iron based and aluminum based materials, said bead having a predetermined length greater than said predetermined interval in the direction of the weld line, said bead being applied onto said surface of the aluminum based material and onto said opposite surface of the iron based material extending continuously over at least two of said voids; and
aluminum welding material filling said at least two of said voids;
wherein the minimum value of a ratio (L-Al)/(L-Fe) over the predetermined length of said bead in direction of the weld line is in the range from 0.5 to 7,where (L-Al) is the length of said aluminum welding material within said voids are filled, along said weld line;
(L-Fe) is the length of said iron based material adjacent to the filled voids, along said weld line.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are: a dissimilar material weld joint being formed by joining an iron type material and an aluminum type material and having not only a high strength but also an excellent ductility; and a weld joining method allowing such a joint to be stably produced. A dissimilar material weld joint 1 formed by joining an iron type material 2 and an aluminum type material 3, wherein: voids 4a are formed beforehand on the side of said iron type material 2 at a predetermined interval along a weld line 6; both said iron type and aluminum type materials are weld joined so that said voids 4a are filled with molten aluminum 7; and the minimum value of the ratio (L-Al)/(L-Fe) of the length (L-Al) of an aluminum type welding material 10 with which said voids 4a are filled to the length (L-Fe) of said iron type material 2 adjacent to said voids 4a filled with said aluminum type welding material 10 along said weld line 6 on the section containing said weld line 6 is in the range from 0.5 to 7, both the lengths (L-Al) and (L-Fe) being the lengths per 100 mm in length of the weld line 6 formed after welding.
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Citations
8 Claims
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1. A dissimilar material weld joint formed by joining an iron based material and an aluminum based material, wherein a surface of the iron based material engages a surface of the aluminum based material, the welding joint comprising:
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voids formed in said iron based material at a predetermined interval along a weld line, said voids extending from the surface of the iron based material that engages the surface of the aluminum based material to an opposite surface of the iron based material; a bead comprising an aluminum welding material weld joining said iron based and aluminum based materials, said bead having a predetermined length greater than said predetermined interval in the direction of the weld line, said bead being applied onto said surface of the aluminum based material and onto said opposite surface of the iron based material extending continuously over at least two of said voids; and aluminum welding material filling said at least two of said voids; wherein the minimum value of a ratio (L-Al)/(L-Fe) over the predetermined length of said bead in direction of the weld line is in the range from 0.5 to 7, where (L-Al) is the length of said aluminum welding material within said voids are filled, along said weld line;
(L-Fe) is the length of said iron based material adjacent to the filled voids, along said weld line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification