Blow hole by the change of combustion ratio

Hi All,
We are facing surface quality problem on our wire rod where some fine flaw found after coiling. From the cross section analysis, the flaw is continue till the center. I supposed that it may cause by blow hole but I have no evidence to say that as I didn't found any blow hole when I cut my cast bar. Any one can help to explain the relationship between the change of combustion vs blow hole?

Regards
Berman

Hello again Berman,

I don't have the information you are looking for but perhaps the manufacturer of your continuous cast line will have that information. I suggest you go there first and see what you can find out because a specific answer here may take an extended period of time.

Moreover I could not find anything specific in the Wire Association abstract search of presented technical papers.

Regards
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com
519 641-3212