K mold testing

[Jerry66]

Does anyone know what I can use to coat a k mold. In the past I used a certain type of graphite, it worked great but I don't know where to get it. Currently I am using a dry graphite from a spray can, this not working too well. The mold is getting too hot and my samples have heat shrinkage.

 

[oscarrp]

Hi. The coating doesnt cool the mold. Before i need to know if you only want to look for oxides on aluminum alloy or need asny further data. If just looking for oxides you need to wait some time before pour the next specimen. The graphite as coat is working well, also can coat with permcoat. Hope this result helpful for you.

 

[Jerry66]

Thanks for your response. I will look for permcoat. In the past I could pour 20 samples, no problem. Now I can only pour 10 or 12 and my mold is too hot, using the graphite spray. I wonder is there some type of ladle coating I can use?

Jerry Davis, 25 years experience in aluminum die casting

 

[Jerry66]

Yes I am looking for oxides in A383 aluminum alloy.

Jerry Davis, 25 years experience in aluminum die casting

 

[TVP]

Have you tried one of the products from Chem-Trend or Acheson (e.g. Deltacast 627)?

Acheson Deltacast

http://www.henkelna.com/cps/rde/xch...96698840624|keywords=Deltacast|action=search|

Chem-Trend

http://www.chemtrend.com/product_overview/casting_lubricants/die_lubricants

http://www.chemtrend.com/application/die_casting/die_lubricants

 

[Jerry66]

OK, Thank you. I wiil look there.

Jerry Davis, 25 years experience in aluminum die casting