China Supplier of Forged Threaded Flange for Pipe

MOLDING SAND CASTING PROPERTIES

Strength

The ability of the sand mold to hold its geometric shape under the conditions of mechanical stress.

Permeability

The ability of a sand mold to permit the escape of gases and steam during the casting process.

Moisture Content

Moisture content affects a mold’s strength and permeability: a mold with too little moisture may break apart, while a mold with too much moisture can cause steam bubbles to be entrapped in the casting.

Flowability

The capacity of the sand to fill small cavities in the pattern. High flowability creates a more precise mold, and is therefore useful for detailed castings.

Grain Size

The size of the individual particles of sand.

Grain Shape

This property evaluates the shape of the individual grains of sand based on how round they are. Generally, three grain categories are used in foundry sand:

1. Rounded Grain sands provide relatively poor bonding strength, but good flowability and surface finish.

2. Angular Grains have greater bonding strength because of interlocking, but poorer flowability and permeability than rounded grain sands.

3. Sub-angular Grains are the middle road. They possess better strength and lower permeability relative to rounded grains, but lower strength and better permeability than angular grains.

Collapsibility

The ability of the sand mixture to collapse under force. Greater mold collapsibility allows the metal casting to shrink freely as it solidifies, without the risk of hot tearing or cracking.

Refractory Strength

The mold must not melt, burn, or crack as molten metal is poured into it. Refractory strength measures the ability of molding sand to withstand extreme heat.

Reusability

The ability of molding sand to be reused (after sand conditioning) to produce other sand castings in subsequent manufacturing operations.

Materials:Carbon steels, alloy steels, stainless steels, Ductile iron, Gray iron, high chromium iron, high Mn steel

1) We can do different kinds of surface treatment after casting, such as machining, polishing, and plating
2) We make them by precision casting, investment casting and steel sand casting process in Ningbo, China
3) They are using for Auto machine and others
4) Machine parts (machining parts or machinery parts), matelwork (metal products) and stamping parts.
5.Export Markets:Australia Investment casting, America, United States.U.S.A.Investment
Casting, Canada Investment casting;U.K.England, Britain Investment casting, Germany
Investment casting, France Investment casting;Italy Investment casting, Espana, Spain
Investment casting, Holand Investment casting, South Africa Investment casting;Danmark
Investment casting;Sweden Investment casting;Finland Investment casting;Belgium
Investment casting;Rumania Investment casting;Russia Investment casting;Brazil
Investment casting;Argentina Investment casting.
6.Supplier:China Ningbo Investment casting factory;China Ningbo Investment casting company;China Ningbo Investment casting Co., Ltd;China Ningbo Investment casting inc;China Ningbo Investment casting corporation;China Ningbo Investment casting manufacturer;China Ningbo Investment casting Supplier;China Ningbo Investment casting part;China Ningbo Investment casting foundry...