Application of chromite sand in large steel castings

Application of chromite sand in large steel castings
(1) When producing large steel castings, applying chrome-plated ore sand as surface sand on the surface of thick castings or hot spots can effectively prevent metal from penetrating and adhering to sand.
(2) The acid consumption of Application of chromite sand  for resin self-hardening sand for bridges should be small, and the moisture content and micro-powder content should be small. Different contents should be controlled, and the proportion distribution should be appropriate.
(3) The mixing process of aromatic aromatic resin sand of chromite sand  is similar to that of rose aromatic resin sand, and the usable time should be appropriately extended. (4) The thermal expansion and high temperature strength of chromium ore are better than quartz sand, and it is suitable for large steel castings.