Precautions when using chromite sand:
1. When preparing the compound of large and medium-sized carbon steel or alloy steel castings, chromium ore can be used as fine powder sand, quartz sand or old sand as back sand. Fine sand calculation.
2. The adhesive and the moisture-proof agent must be mixed first, the the chromite sand is added, and then fully mixed for a long time to ensure that the adhesive is properly coated with sand, and the coupling agent is added and sufficiently ground.
3. The acid requirement of chromite furan resin sand is about 10 times that of quartz sand. The acid should be added first to cover the pebbles, followed by the epoxy resin until mixing and milling occurs.