Aluminum alloy

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.

Description

technical field [0001] The present invention relates generally to aluminum alloys, and more particularly to aluminum alloys that may be suitable for use in die castings such as pumps. Background technique [0002] Pressure washer pumps typically use positive displacement pumps, such as piston pumps. For each pumping cycle, as water is expelled from the pump chamber, the pressure in, for example, a pump system including the pump chamber and the high-pressure manifold that delivers water from the pump chamber to the pump outlet may increase, causing the pump system to Increased stress on the Because a pressure washer pump may cycle hundreds to thousands of times per minute and may continue to use the pressure washer for extended periods of time, the pressure washer pump system may experience fatigue, which may lead to rupture and failure over time. [0003] Extending the life of a pressure washer system, especially a commercial grade pressure washer that may operate at press...

AI Technical Summary

Problems solved by technology

For each pumping cycle, as water is expelled from the pump chamber, the pressure in, for example, a pump system including the pump chamber and the high-pressure manifold that delivers water from the pump chamber to the pump outlet may increase, causing the pump system to stress surge on

Because pressure washer pumps may cycle hundreds to thousands of times / minute and may last for extended periods of pressure washer use, pressure washer pump systems may experience fatigue which may lead to rupture and failure over time

[0003] Extending the life of pressure washer systems, especially commercial grade pressure washers that may operate at pressures greater than 3400 psi, often requires the use of expensive materials and / or manufacturing methods

For example, although die casting may provide a cost-effective manufacturing process for pressure washer pump components, materials such as conventional die cast aluminum alloys that may be used to manufacture pressure washer pump components may not exhibit the strength and fatigue resistance

Therefore, it is often necessary to use pump components made of forged brass or stainless steel to achieve the desired life, resulting in heavier and more expensive pressure washer pumps

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