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What Is Casting
2016-03-01

The process in which a molten liquid is poured into a cast to achieve a desired shape is called Tosing-casting . After the molten liquid harden, the cast can be taken away and the end product which can also be referred to as a casting is sent to be polished and distributed. This is one of the oldest manufacturing techniques which still applys to manufacturers today. Today, metal casting is the most common type of casting in the industry. However, there are also other types of castings.

The first step of casting is to choose a mould which you want to shape the moten metal. Because moulds are manufactured in foundries, manufacturers develop designs of mould that relate to the final casting product they would want to achieve and take them to the foundries. An d then, the desired mould will be developed by casters. Next, the metal which is to be shaped should be melted down, and this also takes place in the foundry. With the help of machines and equipments, melted metal will be poured into the cast or mould. These machines can also monitor the rate at which the metal is poured into the cast as to avoid overflowing. Then it’s time to leave the metal cooling and once it has hardened, the cast can be removed for the metal to be cleaned.

Metal casting normally applies to those products who require identical, precise and complex shaped products. Besides, a manufacturer can create several same products because a mould can be used over and over again. At the same time, molding metals into complex shapes by hands is not as economical as by casting, because it must need extra man power and equipment. If some metals require precise detail, molding can ensure that as well. Some manufacturers nowadays make use of machinery to shape the mould precisely so that it can capture details and imprint them onto castings.

You may think this job sounds quite easy, it’s not the truth at all. Casters have to be aware that there are impurities in the air and they might be present inside where the metal is being cast or on the mould itself. Once the impurities mix with the molten metal, it must will affect the quality of the casting and may cause the metal break eventually. So it is necessary to prevent air bubbles sliding into the mould when pouring the moltten metal. And the caster must take note that the poured liquid metal does not harden immediately so he would not have any problem pouring it slowly and carefully which ensures the good quality of casting.