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Subject: gas holes in steel castings

Date: 07/01/03 at 12:53 PM
Posted by: jayanthi
E-mail: jayanthi_82@yahoo.com
Message Posted:

Sir,

We are making steel valve castings for pressure application.
In the castings we encounter a peculier problem of gas porosity at 45 degree in the flange portion.
all the small castings (<100 kg) are facing this problem.
same steel (1.4581, 1.4408) greater than 250 kg doesn't show any gas porosity.
if you have any suggestion please mail.


thanking you
jayanthi


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