As we mentioned in the previous articles, casting of steel parts is a process through which various and complex structures can be made. This is how the metal is first made into a molten state. Then the molten metal is poured into the mold and after cooling and solidification of the molten material, the metal piece is separated from the mold.
As above It was also mentioned that we need a mold to perform the casting operation, and before starting the casting process, a suitable mold should be made, according to the shape of the part to be produced.
Casting according to the material and characteristics of the part , it is done in different ways and based on this the type of mold is also determined.
☑️ casting molds are of two types.
☑️ Temporary Casting Mold
Temporary mold is a type of mold made of ceramic, plaster or sand, which after the end of the casting process, can no longer be used and are destroyed during the removal of the part from the mold.
Of course, nowadays casting In sand molds, it is more common to use adhesive sand, water and other additives to make such molds.
All ferrous and non-ferrous alloys can be produced in this method.
Other methods of casting in temporary molds include the following.
☑️ Casting in dry molds
☑️ Casting in shell molds in exact formats
☑️ Permanent molding in casting
In the process of casting cast iron parts, by using permanent molds, more than one casting can be produced. That is, permanent molds, unlike temporary molds, are not destroyed after use and can be reused for future uses. .
The material of these molds is metal, and metals such as aluminum, gray cast iron and steel with graphite coating are used to make them.
☑️ Casting in the form of the scrub
This method is used in large numbers to produce parts and repair industrial gearboxes. The casting method in regular molds is suitable for metals and alloys such as aluminum alloys, copper alloys, zinc alloys, gray cast iron and magnesium alloys.
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☑️ Types of casting methods in the molds
☑️ manual methods ☑️ semi-automatic methods ☑️ fully automatic methods