Casting.

CASTING :-
Casting is one of the oldest method of manufacturing the metal components in which metal is first heated and poor that molten metal in the mold and allowed to solidified.

SAND CASTING PROCESS :
The process in which the mold is prepared by sand is called as sand casting process .

Steps in sand casting process-
1. Pattern making.
2. Sand mixing. 
3. Mould making.
4. Core making (optional).
5. Melting and pouring of molten metal.
6. Cooling and solidification. 
7. Cleaning and finishing. 
8. Inspection.

1. Patter making:
When the pattern of wood , metal or plastic which is used to making of cavity.

2. Sand mixing:
Prepared the sand for making of cavity.

3. Mould making:
The process of making cavity of desired shape is called as mould making. 
In sand casting process the mould is made up of sand material. 

4.Core making:
Core is the obstruction which is placed inside the mould in order to make hollow casting. 
Placed core inside the mould in order to make hollow casting. 
In sand casting process,  the core is of sand material. 

5. Melting and pouring of molten metal:
Melt the metal inside the furnace and pour the molten metal into the mould. 

6. Cooling and solidification:
After pouring the molten metal,  the mould is allowed to solidify. 

7. Cleaning and finishing:
After broken the mould,  the sand particles are stick on the casting components and they are removed by brush. 

8. Inspection:
To the inspection,  generally if defects are present, then is rejected.

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