ALUMINUM ALLOY

• US 20200131605A1
• Filed: 10/29/2018
• Published: 04/30/2020
• Est. Priority Date: 10/29/2018
• Status: Active Application

• Current Assignee: FNA Group, Inc.
• Original Assignee: FNA Group, Inc.
• Inventors: Alexander, Gus, Gilpatrick, Richard J.
• Application Number:
  US16/173,137
• Publication Number:
  US 20200131605A1
• Time in Patent Office: Days
• CPC Class Codes: C22C 21/02 with silicon as the next major constituent
• CPC Class Codes: F04B 1/0408 Pistons
• CPC Class Codes: F04B 1/14 having stationary cylinders
• CPC Class Codes: F04B 17/05 driven by internal-combustion engines
• CPC Class Codes: F04B 53/16 Casings; Cylinders; Cylinder liners or heads; Fluid connections

Abstract

An aluminum alloy is provided including between about 7.5-9.5 wt. % silicon, between about 3.0-4.0 wt. % copper, and between about 0.01-5.0 wt. % titanium. The aluminum alloy may include up to about 1.3 wt. % iron, up to about 0.5 wt. % manganese, up to about 0.1 wt. % magnesium, up to about 3.0 wt. % zinc, and up to about 0.35 wt. % tin. The balance of the aluminum alloy may include aluminum.

Claims

1. An aluminum alloy comprising:

between about 7.5-9.5 wt. % silicon;

between about 3.0-4.0 wt. % copper;

up to about 1.3 wt. % iron;

up to about 0.5 wt. % manganese;

up to about 0.1 wt. % magnesium;

up to about 3.0 wt. % zinc;

up to about 0.35 wt. % tin;

between about 0.01-5.0 wt. % titanium; and

the balance being aluminum.

2. The aluminum alloy according to claim 1, comprising between about 0.09-1.0 wt. % titanium.

3. The aluminum alloy according to claim 1, comprising about 8.7 wt. % silicon.

4. The aluminum alloy according to claim 1, comprising about 3.7 wt. % copper.

5. The aluminum alloy according to claim 1, comprising about 1.0 wt. % iron.

6. The aluminum alloy according to claim 1, comprising about 0.2 wt. % manganese.

7. The aluminum alloy according to claim 1, comprising about 0.07 wt. % magnesium.

8. The aluminum alloy according to claim 1, comprising about 0.8 wt. % zinc.

9. The aluminum alloy according to claim 1, comprising about 0.02 wt. % tin.

10. The aluminum alloy according to claim 1, further comprising about 0.02 wt. % lead.

11. The aluminum alloy according to claim 1, further comprising about 0.5 wt. % chromium.

12. The aluminum alloy according to claim 1, further comprising up to about 0.02 wt. % each of one or more of calcium, cadmium, zirconium, silver, strontium, beryllium, antimony, cobalt, lithium, boron, sodium, scandium, vanadium, gallium, molybdenum, lanthanum, and cerium.

13. A pressure washer pump comprising:

a high pressure manifold for conveying a flow a high pressure fluid from a pump chamber to a pump outlet, the high pressure manifold comprising a first cast aluminum alloy feature, the aluminum alloy comprising;

between about 7.5-9.5 wt. % silicon;

between about 3.0-4.0 wt. % copper;

up to about 1.3 wt. % iron;

up to about 0.5 wt. % manganese;

up to about 0.1 wt. % magnesium;

up to about 3.0 wt. % zinc;

up to about 0.35 wt. % tin;

between about 0.01-5.0 wt. % titanium; and

the balance being aluminum.

14. The pressure washer pump according to claim 13, wherein the aluminum alloy comprises between about 0.09-1.0 wt. % titanium.

15. The pressure washer pump according to claim 13, further comprising a low pressure manifold for conveying a flow of low pressure fluid from a pump inlet to the pump chamber, the low pressure manifold comprising a second cast aluminum alloy feature, the aluminum alloy comprising:

between about 7.5-9.5 wt. % silicon;

between about 3.0-4.0 wt. % copper;

up to about 1.3 wt. % iron;

up to about 0.5 wt. % manganese;

up to about 0.1 wt. % magnesium;

up to about 3.0 wt. % zinc;

up to about 0.35 wt. % tin;

between about 0.01-0.2 wt. % titanium; and

the balance being aluminum.

16. The pressure washer pump according to claim 15, wherein the high pressure manifold and the low pressure manifold comprise a common cast aluminum alloy structure including the first cast aluminum alloy feature and the second cast aluminum alloy feature.

17. The pressure washer pump according to claim 13, comprising a pump housing formed as a cast aluminum alloy structure, wherein the high pressure manifold is at least partially integrally cast with pump housing.

18. A pressure washer pump comprising:

a pump housing comprising a die cast aluminum alloy structure, the aluminum alloy comprising;

between about 7.5-9.5 wt. % silicon;

between about 3.0-4.0 wt. % copper;

up to about 1.3 wt. % iron;

up to about 0.5 wt. % manganese;

up to about 0.1 wt. % magnesium;

up to about 3.0 wt. % zinc;

up to about 0.35 wt. % tin;

between about 0.01-5.0 wt. % titanium; and

the balance being aluminum.

19. The pressure washer pump according to claim 18, wherein the aluminum alloy comprises between about 0.09-1.00 wt. % titanium.

20. The pressure washer pump according to claim 18, further comprising:

about 8.7 wt. % silicon;

about 3.7 wt. % copper;

about 1.0 wt. % iron;

about 0.2 wt. % manganese;

about 0.07 wt. % magnesium;

about 0.8 wt. % zinc;

about 0.02 wt. % tin;

about 0.02 wt. % lead;

about 0.5 wt. % chromium; and

up to about 0.02 wt. % each of one or more of calcium, cadmium, zirconium, silver, strontium, beryllium, antimony, cobalt, lithium, boron, sodium, scandium, vanadium, gallium, molybdenum, lanthanum, and cerium.