EP0095604A2
Expired / Lapsed
EP
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Aluminum base material with hard facing deposit
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1983-05-09
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Granted: —
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Expires: 2003-05-09
Abstract
Abstract An aluminum base material with a hard facing deposit which shows extremely good hot hardness properties when subjected to high operating temperatures. The invention provides a hard facing deposit which shows a hot hardness of at least 100 BHN at 600°F, and has sufficient toughness to resist the formation of cracks when subjected to such operating temperatures. According to the preferred embodiment, the hard facing deposit includes, by weight, about 6% to about 12% silicon, up to about 6% copper, about 2% to about 6% manganese, up to about 3% iron, and about 16% to about 25% nickel. The invention is particularly useful in forming a heavy duty diesel engine piston with a piston ring groove formed in the hard facing deposit.
Inventors
- 👤 Wallace M. Matlock
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; F; F16; F16J; F16J9/00; F16J9/12; F16J9/22; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
74 words
An aluminum base material with a hard facing deposit thereon, said hard facing deposit consisting essentially of an aluminum alloy including, by weight, (i) about 54% to about 65% aluminum (ii) about 34% to about 17% of materials selected from a group consisting essentially of nickel, manganese, iron, cobalt, and combinations of the foregoing, and (ii) a balance of materials selected from a group consisting essentially of copper, silicon, and combinations of the foregoing.
Claim 2
Dependent Claim
74 words
An aluminum base material with a hard facing deposit thereon, said hard facing deposit consisting essentially of an aluminum alloy including, by weight, (i) about 54% to about 65% aluminum (ii) about 34% to about 17% of materials selected from a group consisting essentially of nickel, manganese, iron, cobalt, and combinations of the foregoing, and (ii) a balance of materials selected from a group consisting essentially of copper, silicon, and combinations of the foregoing.
Claim 3
Dependent Claim
34 words
An aluminum base material with a hard facing deposit thereon as recited in claim 1, wherein said hard facing deposit shows a Brinell hardness of at least 100 BHN at 60 0 o F.
Claim 4
Dependent Claim
44 words
An aluminum base material with a hard facing deposit thereon as recited in claim 2, wherein said aluminum base material comprises part of an internal combustion engine piston, and wherein a piston ring groove is defined at least partially in said hard facing deposit.
Claim 5
Dependent Claim
24 words
An aluminum base material with a hard facing deposit thereon as recited in claim 3, wherein said hard facing deposit comprises a weld deposit.
Claim 6
Dependent Claim
34 words
An aluminum base material with a hard facing deposit thereon as recited in either of claims 1 or 4, wherein said aluminum base material comprises an aluminum-silicon alloy with at least about 65% aluminum.
Claim 7
Dependent Claim
62 words
An aluminum base material with a hard facing deposit thereon as recited in claim 5, wherein said aluminum alloy comprises between about 16% and about 25% nickel, between about 2% and about 6% manganese, up to about 3% iron, and between about 6% and about 18% of material selected from the group consisting essentially of copper, silicon, and combinations of the foregoing.
Claim 8
Dependent Claim
69 words
An aluminum base material having a hard facing deposit thereon, said hard facing deposit consisting essentially of an aluminum alloy including, by weight, about 6% to about 12% silicon, up to about 6% copper, about 2% to about 6% manganese, up to about 3% iron, about 16% to about 25% nickel, and balance aluminum, where the alloying materials comprise at least about 34% by weight, of the total alloy.
Claim 9
Dependent Claim
69 words
An aluminum base material having a hard facing deposit thereon, said hard facing deposit consisting essentially of an aluminum alloy including, by weight, about 6% to about 12% silicon, up to about 6% copper, about 2% to about 6% manganese, up to about 3% iron, about 16% to about 25% nickel, and balance aluminum, where the alloying materials comprise at least about 34% by weight, of the total alloy.
Claim 10
Dependent Claim
24 words
An aluminum base material having a hard facing deposit thereon as recited in claim 7, wherein said hard facing deposit comprises a weld deposit.
Claim 11
Dependent Claim
36 words
An aluminum base material having a hard facing deposit thereon as recited in claim 8, wherein said hard facing deposit shows a Brinell hardness of at least about 100 BHN at 60 0 o F .
Claim 12
Dependent Claim
44 words
An aluminum base material having a hard facing deposit thereon as recited in claim 9, wherein said aluminum base material comprises part of an internal combustion engine piston, and wherein a piston ring groove is defined at least partially in said hard facing deposit.
Claim 13
Dependent Claim
30 words
An aluminum base material having a hard facing deposit thereon as recited in claim 10 wherein said aluminum base material comprises an aluminum-silicon alloy with at least about 65% aluminum.
Claim 14
Dependent Claim
76 words
An aluminum base material having a hard facing weld deposit thereon, said hard facing weld deposit consisting essentially of an aluminum alloy which includes at least about 16% of materials selected from a group consisting essentially of nickel, cobalt, and combinations of the foregoing, a hard faced surface being formed at least partially in said hard facing weld deposit, said hard facing weld deposit exhibiting a Brinell hardness of at least about 100 BHN at 600°F.
Claim 15
Dependent Claim
76 words
An aluminum base material having a hard facing weld deposit thereon, said hard facing weld deposit consisting essentially of an aluminum alloy which includes at least about 16% of materials selected from a group consisting essentially of nickel, cobalt, and combinations of the foregoing, a hard faced surface being formed at least partially in said hard facing weld deposit, said hard facing weld deposit exhibiting a Brinell hardness of at least about 100 BHN at 600°F.
Claim 16
Dependent Claim
62 words
An aluminum base material having a hard facing deposit thereon as recited in claim 12, wherein said aluminum alloy comprises between about 16% and about 25% nickel, between about 2% and about 6% manganese, up to about 3% iron, and between about 6% and about 18% of material selected from the group consisting essentially of copper, silicon, and combinations of the foregoing.
Claim 17
Dependent Claim
46 words
An aluminum base material having a hard facing deposit thereon as defined in claim 13, wherein said aluminum base material comprises part of an internal combustion engine piston, and wherein said hard faced surface comprises a part of a piston ring groove formed in said piston.
References Cited (Backward Citations)
No citation records indexed.
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