Manufactuer of ductile iron casting and grey iron casting

Sand Casting

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The sand used for sand molding is critical and determines the favorable or unfavorable out come of the casting, it controls the tolerances, surface finish and the repeatability while in production. The sand must exhibit the following characteristics:

Characters of sand casting:

FLOWABILITY: The ability to pack tightly around the pattern.

PLASTIC DEFORMATION: Have the ability to deform slightly with out cracking so that the pattern can be withdrawn.

GREEN STRENGTH: Have the ability to support its own weight when stripped from the pattern, and also withstand pressure of molten metal when the mold is cast

PERMEABILITY: This allows the gases and seam to escape from the mold during casing.

All of these requirements are dependent on the amount of active clay present and on the water content of the mixture.

SAND CASTING BENEFITS

Least expensive casting process

Casting can be up to several tons

Less expensive than machining shapes from bar stock

Can cast intricate shapes

Can be used with most pourable metals and alloys

Sand Casting

Green Sand Casting

Character: Sand-mold casting is adaptable to a very wide range of alloys, shapes, sizes, and production quantities. Hollow shapes can be produced in these castings through the use of cores. Sand-mold casting is by far the most common casting process used in industry

Resin Sand Casting

1. Sand molds often use resin based chemical binders that possess high dimensional accuracy and high hardness. 2. Such resin-bonded sand molds take somewhat longer to manufacture than green sand molds because a curing reaction must take place for the binder ....

Mold shell casting

Benefits of Shell Mold Casting: 1. Shell molding process offers better surface finish. 2 Shell molding process offers better dimensional tolerances 3 Shell Molding Process offers higher throughput due to reduced cycle times.

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