CD4MCuN cast stainless steel
CD4MCuN cast stainless steel
(OP)
We are casting a small but rather complex and thin sectioned casting in CD4MCu stainless steel, and have experience problems with misruns and with cracking or hot tears. It has been suggested that we should increase our level of Silicon to improve flowability, at present we aim for .5%. max is 1%, can anyone suggest what level we should aim for. It has also been suggested that we add Nitrogen to assist with the cracking/hot tears we are getting, any comments appreciated,
thanks.
thanks.





RE: CD4MCuN cast stainless steel
Have you had a lab analysis performed on one or more scrap castings to confirm the cracks are hot tears, did you confirm mechanical properties and the appearance of the as-cast microstructure? If not, the above needs to be done before changes in chemical composition is required.
RE: CD4MCuN cast stainless steel
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Plymouth Tube
RE: CD4MCuN cast stainless steel
Look at the core gases being generated by the binder ,provide more vents and possibly keep the mold hot to reduce . Can you consider using smaller pouring ladles, so that you can pour them fast into the molds.