Characteristics and application of special coatings for iron mold sand-coated molds

Sand-covered iron casting has a short process flow, small footprint, low investment, and environmental protection; the produced castings have high dimensional accuracy, small machining allowance, light weight, compact structure and excellent mechanical properties

However, for castings with complex shapes, especially gray cast iron, the iron mold sand coating process must also spray paint on the mold, and spraying paint on the hot mold of the coated sand has always been a problem for the industry: the paint is on the surface of the mold.

As a first-line brand enterprise of European foundry coatings, Italian Corefon company has been focusing on the research and development and production of foundry coatings for nearly half a century.

1.

It can reduce the workload of spraying and post-core trimming and save paint

2.

The coating is a coating type coating with a penetration depth of about 1.

3.

Under high temperature conditions, the coating melts to form a sufficient amount of glass phase layer with strong viscosity and toughness, which not only effectively resists the scouring force of the molten metal, but also slows down the shear force caused by the expansion of the sand mold, ensuring the integrity of the coating

4.

According to the characteristics of the iron mold sand coating process, such as fast cooling speed, through scientific control of the types and proportions of refractory aggregates and additives in the coating, the coating can form a complete glass body, prevent the molten metal from penetrating into the sand mold, and reduce the phenomenon of sand sticking on the surface of the casting.