Patent US5308409A successfully refreshed from Google Patents.
US5308409A
Expired / Lapsed
US
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Method of strengthening aluminum castings in a specified local part
Assignee: Isuzu Motors Ltd
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Filing: 1991-04-22
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Granted: 1994-05-03
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Expires: 2011-04-22
Abstract
Abstract A method of strengthening an aluminum casting by modifying qualities of a specified part thereof comprises the steps of forming a weld overlay on the specified part using powders made of heat resisting element and remelting the specified part, now overlaid with the layer of heat resisting alloy layer, using high density energy.
Inventors
- 👤 Tadashi Kamimura
- 👤 Akira Tsujimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:03
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K10/00; B23K10/02; B23K15/00; B23K15/0046; B23K15/0086; B23K35/22; B23K35/24; B23K35/28; B23K35/286; B23K9/00; B23K9/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
115 words
A method of strengthening an aluminum casting, comprising the steps of: encapsulating a core particle made from a heat resisting element with particles made from a metal soluble in Al to form a capsule particle; applying a first electric arc to a local part of the aluminum casting so as to melt the local part; spraying a plurality of capsule particles over the melted local part to form an overlay, the encapsulating particles serving as a binding material between the aluminum casting and the core particle; and applying a second electric arc of high density energy to the overlaid local part so as to remelt the overlaid local part and form a remelt alloy layer.
Claim 2
Independent Claim
115 words
A method of strengthening an aluminum casting, comprising the steps of: encapsulating a core particle made from a heat resisting element with particles made from a metal soluble in Al to form a capsule particle; applying a first electric arc to a local part of the aluminum casting so as to melt the local part; spraying a plurality of capsule particles over the melted local part to form an overlay, the encapsulating particles serving as a binding material between the aluminum casting and the core particle; and applying a second electric arc of high density energy to the overlaid local part so as to remelt the overlaid local part and form a remelt alloy layer.
Claim 3
Dependent Claim
19 words
The method of claim 1, wherein the step of applying the first electric arc is performed by plasma welding.
Claim 4
Dependent Claim
20 words
The method of claim 2, wherein the step of applying the second electric arc is performed by a TIG torch.
Claim 5
Dependent Claim
28 words
The method of claim 2, wherein the step of applying the second electric arc is performed with any one of an electron beam, laser beam and plasma arc.
Claim 6
Dependent Claim
15 words
The method of claim 4, wherein the powders of heat resisting element are Ni powders.
Claim 7
Dependent Claim
14 words
The method of claim 4, wherein the heat resisting element is Cr or Mo.
Claim 8
Dependent Claim
13 words
The method of claim 1, wherein the core particle is a Ni particle.
Claim 9
Dependent Claim
12 words
The method of claim 7, wherein the encapsulating particles are A1 particles.
Claim 10
Dependent Claim
15 words
The method of claim 1, wherein the core particle is a Cr or Mo particle.
Claim 11
Dependent Claim
16 words
The method of claim 9, wherein the encapsulating particles are made from Cu or Cu alloy.
Claim 12
Independent Claim
95 words
A method of strengthening an aluminum casting, comprising the steps of: manufacturing a composite wire by filling a sheathing with capsule particles made by encapsulating a core particle made from a heat resisting element with particles made from a metal soluble in A1: applying a first electric arc to the specified part of the casting with the composite wire as a consumable electrode, so as to form an overlay on the specified part; applying a second electric arc of high density energy to the overlaid specified part so as to remelt the overlaid specified part.
Claim 13
Independent Claim
95 words
A method of strengthening an aluminum casting, comprising the steps of: manufacturing a composite wire by filling a sheathing with capsule particles made by encapsulating a core particle made from a heat resisting element with particles made from a metal soluble in A1: applying a first electric arc to the specified part of the casting with the composite wire as a consumable electrode, so as to form an overlay on the specified part; applying a second electric arc of high density energy to the overlaid specified part so as to remelt the overlaid specified part.
Claim 14
Dependent Claim
11 words
The method of claim 1, wherein the core particle is Ni.
Claim 15
Dependent Claim
11 words
The method of claim 12, wherein the encapsulating particles include A1.
Claim 16
Dependent Claim
13 words
The method of claim 12, wherein the core particle is Cr or Mo.
Claim 17
Dependent Claim
14 words
The method of claim 1, wherein the encapsulating particles are Cu or Cu alloy.
Claim 18
Dependent Claim
21 words
The method of claim 15, wherein the sheathing is made from a metal that is soluble in A1 and is ductile.
Claim 19
Dependent Claim
25 words
The method of claim 16, wherein the step of applying a first electric arc is performed by a MIG welding technique using a MIG welder.
Claim 20
Dependent Claim
21 words
The method of claim 17, wherein the step of applying a second electric arc is performed using a TIG welding torch.
Claim 21
Dependent Claim
27 words
The method of claim 17, wherein the step of applying a second electric arc is performed using any of an electron beam, laser beam and plasma arc.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-02 | 1997-11-01 | 1998-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-02 | 2001-11-01 | 2002-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-02 | 2005-11-01 | 2006-05-03 | $7700.00 | Window Closed / Lapsed |