Ductile Iron Casting ASTM A356 Grade Material Green Sand Casting Housing Parts

Product Description and Process

Ductile Iron Casting ASTM A356 Grade Material Green Sand Casting Housing Parts

Production process:

Greensand casting process

pre-coated sand casting process

resin sand casting process

Weight range: from 50 grams to 2,000 kilograms for ductile iron casting product

Sand mold production:

Automatic molding machine

Z145 molding machine

Z146 molding machine

Z148 molding machine

Handwork molding, though most parts can achieve the molding by machine, for some complex structure parts, the hand molding is still needed.

Machining process:

CNC machine, machining center, lathe, mill machine, drill machine, etc.

Surface treatment process:

paint coating, electrophoretic paint coating, electro galvanizing coating, black oxide coating, phosphate treatment,  powder coating, etc.

Product Material and Uses

Normally production with gray iron HT200, HT250, ductile iron 65-45-12, 60-40-18, 80-55-06, 80-60-03, 100-70-03, etc.

The ductile iron casting products are widely used for Auto-cars, trains, trucks, vehicle components, mining machinery components, agricultural machinery parts, textile machinery parts, construction machinery parts, etc.

Advantages of Ductile Iron Castings

There are several advantages that ductile iron provides designers:

1. Ductile iron can be easily cast and machined.

2. It has an excellent strength-to-weight ratio.

3. Ductile iron can be made for a much lower cost than steel.

4. It has superior castability and machinability.

5. Ductile iron provides a designer with an exceptional combination of toughness, low-cost manufacturing, and reliability.

Properties of Ductile Iron

To create different grades of ductile iron, one must control the matrix structure around the graphite during the casting process or through subsequent heat treatment. The minor compositional differences between the different grades of ductile iron exist in order to create the desired matrix (microstructures).

Ductile iron can be considered as steel with graphite spheroids dispersed throughout its matrix. The qualities of the metallic matrix in which the graphite spheroids are suspended have a significant effect on ductile iron’s properties, but the graphite spheroids themselves do not.

There are several matrices found within ductile iron, the most common being

Ferrite – a pure, ductile, flexible iron with little strength. This matrix has poor wear resistance, but high impact resistance and good machinability.

Pearlite – a mechanical mixture of ferrite and iron carbide (Fe3C). It is relatively hard, with moderate ductility. It has high strength, good wear resistance, moderate impact resistance, and good machinability.

Pearlite/Ferrite – a structure consisting of a mixture of pearlite and ferrite, and the most common matrix for commercial grades of ductile iron.

Common Ductile Iron Grates

While there are many different ductile iron specifications, foundries routinely offer 3 common grades;

http://www.zzebcorp.com/