| 摘要 |
The present invention relates to a process for reducing riser size and/or number in sand or permanent mold casting, the process comprising the steps of: providing an electric arc electrode and positioning the electric arc electrode slightly above the upper surface of the molten metal in the riser, during or after pouring molten metal into the sand or permanent mold; applying a moving arc over the upper surface of the molten metal in the riser during solidification, to stir the molten metal by applying an electric current to the electrode. |
