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Any object made by us for any specific purpose is called product. The process of making a product is called manufacturing and the process is called manufacturing process. Manufacturing, in the broadest sense, is the process of converting raw materials into products. It consists of Designing the product, Selection of raw materials, Sequence of processes through which the product will be manufactured. In other words, manufacturing is the economic term for making goods and services available to satisfy human needs and wants. Manufacturing implies creating value by applying useful mental and / or physical labour. In the casting process, the material is given the desired shape by melting it. The molten material is poured into a cavity of the desired shape and size of the product to be produced, allowing it to solidify. The cavity is made in a suitable material held in a box called mould. After solidification, the end product is extracted from the mould. In a Metal joining process, two or more pieces are joined together to produce the required shape or size of the product. The joint can be permanent, semi-permanent or temporary. Some of the metal joining processes are soldering, brazing.
