Sand Casting

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Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand as the mold material. The term "sand casting" can also refer to an object produced via the sand casting process. Sand castings are produced in specialized factories called foundries. Over 70% of all metal castings are produced via a sand casting process.


Sand casting is relatively cheap and sufficiently refractory even for steel foundry use. In addition to the sand, a suitable bonding agent (usually clay) is mixed or occurs with the sand. The mixture is moistened, typically with water, but sometimes with other substances, to develop strength and plasticity of the clay and to make the aggregate suitable for molding. The sand is typically contained in a system of frames or mold boxes known as a flask. The mold cavities and gate system are created by compacting the sand around models, or patterns, or carved directly into the sand.

   
 

Carbon Steel Alloy Castings are ideal for general engineering purposes.Carbon and Low alloy steel castings are ideal for general engineering purposes. They can be used in a wide variety of low and medium strength applications and provide useful general properties at a relatively low cost. Additionally considerable improvements in mechanical properties can be achieved by heat treatment.

 

 

Gray iron is the most versatile of all foundry metals. The high carbon content is responsible for ease of melting and casting in the foundry and for ease of machining in subsequent manufacturing. The low degree or absence of shrinkage and high fluidity provide maximum freedom of design for the engineer. By suitable adjustment in composition and selection of casting method, tensile strength can be varied from less than 20,000 psi to over 60,000 psi and hardness from 100 to 300 BHN in the as-cast condition. By subsequent heat treatment, the hardness can be increased. An unnecessary increase in strength and hardness may increase the cost of the casting as well as increase the cost of machining through lower machining rates. Although the relationship between Brinell hardness and tensile strength for gray iron is not constant, data are shown which will allow use of the Brinell hardness test to estimate the minimum tensile strength of the iron in a casting. 

 

 

Ductile iron is also known as Spheroidal graphite iron and Nodular cast iron. This grade of Iron was developed over 60 years ago and in the USA. As the name Ductile Iron suggests this grade of Cast Iron has a degree of ductility.
The main characteristic of this material is the structure of the graphite. In Ductile iron the graphite is in the form of spherical nodules (hence the name Spheroidal graphite). This nodular graphite structure inhibits the creation of linear cracks hence the ability to withstand distortion.

 

 

Stainless Alloy castings can be used in a variety of applications where corrosion resistance is required at normal and elevated temperatures, along with reasonable strength, they offer good wear resistance and typical uses range from Flame proof and Explosion proof Enclosures to valve Control equipment.

 

 

Manganese Steel  are characterized by the hardness, anti corrosive nature and high wear and tear properties. 

 

 

Aluminium Alloys have a distinct advantage over ferrous and copper base alloys - their lower density. This attribute is the primary reason that Aluminium is selected as a cast alloy.

 

 


Nonferrous metals 
are often selected for their extreme and specific tolerances to various working conditions. 

 

 

 






We offer castings according to your requirements and specifications, including casting, heat treatment, machining, quality control and delivery.

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