By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Forum House Ad Zone

casting small parts

All Topics | Latest Posts

Search for:  in Thread Title in  
<< First < Prev 1 2
Andrew Johnston10/03/2011 19:53:48
avatar
7061 forum posts
719 photos
Posted by Keith Wardill on 10/03/2011 15:04:27:
 
I have read somewhere about allout alloying with copper - I experimented with this by dropping small chunks of copper pipe in the melt - they do 'disappear' - they are not left behind in the cannister. I assume the mechanism for this is the same as for stainless (i don't know for sure). I don't know how to go about any scientific testing of this, but the resulting castings did seem to be harder - it turned more like Dural than aluminium.
 
 
Errr, that's because basically it is duralumin! The main alloying elements of duralumin are aluminium and copper, although it normally also contains maganese and magnesium. More generally the 2xxx series of alloys are based on aluminium and copper. These alloys were widely used in the aircraft industry, and also have the useful property of age hardening. A downside is that the copper makes the alloys prone to exfoliation corrosion. The 2xxx series are generally being replaced by the 7xxx series in the aircraft industry, as they are less prone to corrosion.
 
Regards,
 
Andrew
<< First < Prev 1 2

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Sign up to our Newsletter

Sign up to our newsletter and get a free digital issue.

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts
Support Our Partners
cowells
Sarik
MERIDIENNE EXHIBITIONS LTD
Shopping Partners
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest

 

Donate

donate