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US3937383A
Expired / Lapsed
US
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High speed room temperature seam bonding of metal sheets
Assignee: Continental Can Co Inc
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Filing: 1975-03-24
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Granted: 1976-02-10
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Expires: 1995-03-24
Abstract
Abstract An improved pressure welding technique permits high speed room temperature seam bonding of metal sheets. A metal interlay is placed between the faying surfaces to be bonded and the assembly is compressed until the interlay is properly spread over the faying surfaces. The interlay has a cross-section designed to produce a highly differential flow when subjected to external compressive loads. This differential flow causes shear movement between the interlay and the faying surfaces which effects the weld. Joining speeds in excess of 10 feet per second are possible, with a reduction in sheet thickness of about 5 percent.
Inventors
- 👤 Walter Sawert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:09
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/16
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
102 words
In a method of cold pressure welding a pair of cold pressure weldable metal members arranged with edges of superposed end portions of said members substantially in register with one another, comprising the steps of placing a metallic interlay between the faying surfaces to be bonded to form a weld assembly and compressing said weld assembly, thereby creating an intense interfacial flow conducive to bonding of said member in a solid phase welding bond, and wherein said interlay is of cross-section such as to deform at substantially different rates, as measured along mutually perpendicular axes, consequent to said compression of said assembly.
Claim 2
Dependent Claim
102 words
In a method of cold pressure welding a pair of cold pressure weldable metal members arranged with edges of superposed end portions of said members substantially in register with one another, comprising the steps of placing a metallic interlay between the faying surfaces to be bonded to form a weld assembly and compressing said weld assembly, thereby creating an intense interfacial flow conducive to bonding of said member in a solid phase welding bond, and wherein said interlay is of cross-section such as to deform at substantially different rates, as measured along mutually perpendicular axes, consequent to said compression of said assembly.
Claim 3
Dependent Claim
37 words
In a method according to claim 1, wherein the ratio of the rate of deformation along one axis to the rate of deformation along a perpendicular axis is in the range of about 5:1 to about 30:1.
Claim 4
Dependent Claim
25 words
In a method according to claim 1, wherein the maximum hardness of said interlay is equal to the hardness of said members to be joined.
Claim 5
Dependent Claim
15 words
In a method according to claim 1, wherein said interlay has a substantially circular cross-section.
Claim 6
Dependent Claim
15 words
In a method according to claim 1, wherein said interlay has a substantially oval cross-section.
Claim 7
Dependent Claim
26 words
In a method according to claim 1, wherein said interlay has a cross-section which is substantially diamond-shaped with depressions formed in place of two opposing corners.
Claim 8
Dependent Claim
15 words
In a method according to claim 1, wherein said interlay has an arrow-head shaped cross-section.
Claim 9
Dependent Claim
20 words
In a method according to claim 1, wherein said interlay has a substantially square cross-section with a void disposed therethrough.
Claim 10
Dependent Claim
13 words
In a method according to claim 8, wherein said void is asymetrically located.
Claim 11
Dependent Claim
34 words
In a method according to claim 1, wherein said interlay comprises a filler metal and metal wires disposed within said filler metal, the hardness of said wires exceeding the hardness of said filler metal.
Claim 12
Independent Claim
134 words
A method of cold pressure welding a cover member to the edge of a hollow tubular member, both said members consisting of cold pressure weldable metal, comprising outwardly bending the end portions of said members to provide frustoconical interfitting flanges, placing said cylindrical member in a die wherein said die supports said flange on said cylindrical member, mounting said cover member on a circular punch wherein said punch supports said flange on said cover member, said punch being concentric with said die, placing a metallic interlay between the faying surfaces of said members, said flanges and said interlay comprising a weld assembly, and axially displacing said punch relative to said die to compress said weld assembly thereby creating an intense interfacial flow conducive to bonding of said members in a solid phase welding bond.
Claim 13
Independent Claim
134 words
A method of cold pressure welding a cover member to the edge of a hollow tubular member, both said members consisting of cold pressure weldable metal, comprising outwardly bending the end portions of said members to provide frustoconical interfitting flanges, placing said cylindrical member in a die wherein said die supports said flange on said cylindrical member, mounting said cover member on a circular punch wherein said punch supports said flange on said cover member, said punch being concentric with said die, placing a metallic interlay between the faying surfaces of said members, said flanges and said interlay comprising a weld assembly, and axially displacing said punch relative to said die to compress said weld assembly thereby creating an intense interfacial flow conducive to bonding of said members in a solid phase welding bond.
Claim 14
Dependent Claim
34 words
In a method according to claim 11, wherein said interlay is of cross-section such as to deform at substantially different rates, as measured along mutually perpendicular axes, consequent to said compression of said assembly.
Claim 15
Dependent Claim
25 words
In a method according to claim 12, wherein the maximum hardness of said interlay is equal to the hardness of said members to be joined.
Claim 16
Independent Claim
113 words
A method of cold pressure welding a lapped side-seam to form a hollow tube from a preformed sheet of cold pressure weldable metal, comprising placing said preformed sheet between mating male and female dies such that the axial edges of said sheet overlap, said femele die having an opening exposing said overlap, placing a metal interlay between the faying surfaces of said edges, said edges and said interlay comprising a weld assembly, and compressing said weld assembly between said male die and a punch, said punch acting through said opening in said female die, said compression creating an intense interfacial flow conducive to bonding of said edges in a solid phase welding bond.
Claim 17
Independent Claim
113 words
A method of cold pressure welding a lapped side-seam to form a hollow tube from a preformed sheet of cold pressure weldable metal, comprising placing said preformed sheet between mating male and female dies such that the axial edges of said sheet overlap, said femele die having an opening exposing said overlap, placing a metal interlay between the faying surfaces of said edges, said edges and said interlay comprising a weld assembly, and compressing said weld assembly between said male die and a punch, said punch acting through said opening in said female die, said compression creating an intense interfacial flow conducive to bonding of said edges in a solid phase welding bond.
Claim 18
Dependent Claim
34 words
In a method according to claim 14, wherein said interlay is of cross-section such as to deform at substantially different rates, as measured along mutually perpendicular axes, consequent to said compression of said assembly.
Claim 19
Dependent Claim
25 words
In a method according to claim 15, wherein the maximum hardness of said interlay is equal to the hardness of said edges to be joined.
References Cited (Backward Citations)
US3024299A
Cited
US3733691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |