What Is Resin Sand Casting?
Resin Sand Casting process is a kind of floor molding process using resin sand as the molding material. Resin sand is a mixture of quartz sand and resin. After mixing and burning, the resin sand becomes very hard and solid, so it is called a hard mold.
Since the resin sand mold is very hard and solid with smooth surfaces, resin sand casting offers more accurate dimensions, better surface smoothness, and fewer sand residuals or casting defects on the surface and inside.
Pouring Metal Liquid To Cavity
What Metal We Cast
Grey Iron: HT150, HT200, HT250; EN-GJL-100 to 300; GG15 to GG30
Ductile Iron: GGG40 to GGG80; EN-GJS-400 to 800; QT400 to QT800

How We Inspect The Castings
Equipped with ARL360 Spectrometer and metallurgical microscopes, we offer:
- Spectrographic quantitative analysis
- Metallographic analysis
- Brinell & Rockwell hardness inspection
- Mechanical property analysis

1) Making Pattern: Made of wood or aluminum. Aluminum is ideal for thousands of parts requiring tight tolerances.
2) Molding Process: Sand is mixed, shot into sand boxes, and packed solid by workers.
3) Self-Hardening: The sand mold is coated with alcohol-based coatings and burned to become a hard mold.
4) Melting and Pouring: Medium frequency electrical furnaces melt scrap irons for the process.
5) Cleaning & Finishing: Shot blasting removes sand/oxides, gating systems are cut, and parting lines ground before machining.
We use professional equipment to produce high-quality, large-volume grey iron and ductile iron castings.