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Metals/Aluminium

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Question
Hi
I have recently bought a laptop which has an aluminium bottom.The bottom gets very hot often,and mysterious scratches are appearing on the back.Is the back getting scratched because of a reaction between heat and alluminium

Answer
Lee,

The fast answer is no - there is no connection between heat and scratches.

The scratches are only caused by abrasion of a harder object against the softer aluminum case.  Heat has nothing to do with the scratches.  If you were concerned about the heat softening the aluminum, that only happens over 1100 degrees F, and your computer does not generate that type of heat.

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Rich Fercy

Expertise

Specializing in wear resistant, industrial and construction steels. Also extensive background in welding cast iron, stainless steel and nickel based steels. Welding problems except code issues.

Experience

Since 1993 I have worked as a technical salesman in wear resistant steel applications and specialty welding solutions for Wisconsin and Northern Michigan.

Organizations
AFS MOTAG

Publications
Pit and Quarry Magazine, Jan 2014 - 'Wear Steel'. How to select the longest lasting wear resistant steel before writing a purchase order. www.pitandquarry.com/wear-steel/ Portable Plant & Equipment, September 2013 - 'Wear Steel'. Sister magazine to Pit and Quarry - same article. Recycling Today Magazine, August 2009 - "Wear On". Article compares Manganese Steel to Alloy Steel replacement shredder repair parts. Author of "40 Cast Iron Welding Secrets That Welding Shops Don't Want You To Know". Website: www.WearAnswers.com

Education/Credentials
Guest instructor at Fox Valley Tech College, Appleton WI, welding program. MSHA certified welding safety instructor.

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