Wednesday, April 1, 2020

Aluminum Cylinder Block - Design and Manufacturing

Google search:   engine cylinder block aluminum

Honda R&D
https://www.hondarandd.jp/point.php?pid=392&lang=en

https://www.howacarworks.com/engine-block

https://www.foundry-planet.com/d/new-technology-for-aluminum-engine-block-and-cylinder-head/

http://newengineeringpractice.blogspot.com/2011/08/engine-block-manufacturing-process.html

Aluminum alloy for engine blocks
Abstract
An aluminum alloy is disclosed that is suitable for casting and machining cylinder blocks for engines, especially gasoline fuel engines for automotive vehicles. The casting has the strength and wear resistance to piston/seal scuffing for such engines. The alloy comprises, by weight, 9.5 to 12.5% silicon, 0.1 to 1.5% iron, 1.5 to 4.5% copper, 0.2 to 3% manganese, 0.1 to 0.6% magnesium, 2.0% max zinc, 0 to 1.5% nickel, 0.25% maximum titanium, up to 0.05% strontium and the balance aluminum, where the weight ratio of manganese to iron is 1.2 to 1.75 or higher when the iron content is equal to or greater than 0.4% and the weight ratio of manganese to iron is at least 0.6 to 1.2 when the iron content is less than 0.4% of the alloy.

InventorHerbert William DotyCurrent Assignee GM Global Technology Operations LLC

Application US10/603,086 events
2003-06-24
Application filed by Motors Liquidation Co
Application granted
2005-07-26
Publication of US6921512B2
2020-04-01
Application status is Active
2023-06-24
Anticipated expiration
https://patents.google.com/patent/US6921512B2/en

https://patents.google.com/patent/US3290740

https://patents.google.com/patent/US20070277771

2014

Trimet, one of the leading aluminum casting producers in Europe, has switched over its lines to the use of a lubricant from Henkel Loctite Corporation (Henkel.com), Bonderite for casting cylinder blocks.

The shift has resulted in a cycle time reduction of 5%. It is an important industrial engineering change to be noticed.
https://www.autobeatonline.com/articles/aluminum-engine-block-casting-improved


https://www.sunnen.com/NewsDetails.aspx?NewsID=11

Coromant tooling for cylinder block
https://www.sandvik.coromant.com/en-gb/industrysolutions/automotive/engine/pages/cylinder-block.aspx

Tooling for

Cylinder block
Cylinder head
Crankshafts
Cam shaft
Connecting rod are also available.



Manufacturing Feasability OF All Aluminum Engines
http://www.ncccoat.com/pdf/manufacturing-feasability-of-all-aluminum-engines.pdf


2007
https://www.foundrymag.com/issues-and-ideas/article/21927133/new-approach-improves-diecasting-for-engine-blocks

2016
https://www.todaysmotorvehicles.com/article/thermal-spray-technology-for-engine-blocks/


2018

A new high-temperature cast aluminum alloy 351

In today’s cylinder head designs, the most commonly used cast aluminum alloys are A356, 319 and AS7GU (A356+0.5%Cu). A356 is a primary aluminum alloy with good ductility and fatigue properties at low to intermediate temperatures.

The 319 alloy is a lower cost alternative to the A356. . However, this alloy is prone to shrinkage porosity due to the high iron and copper content and low ductility at room temperature.

The recently developed AS7GU alloy is a variant of A356, strengthened with 0.5%Cu. Like A356, the AS7GU alloy has good castability while the small copper addition improves creep resistance and tensile strength at intermediate temperatures. A new high-temperature cast aluminum alloy 351 has been registered with the Aluminum Association by Alcoa and recently was studied for semi-permanent mold cast cylinder heads
https://www.moderncasting.com/articles/2018/07/03/aluminum-351-can-take-heat-study-says

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