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METALWORKING

Definition:
* Is the process of working with metals to create individual parts, assemblies, or large scale structures. The term covers a wide range of work from large ships andbridges to precise engine parts and delicate jewelry.
* Is a science, art, hobby, industry and trade.
* Metalworking is the process of working with metals to create a diverse range of products,from the hulls of ships to engagement rings.
There are many reasons to practice metalworking. Metalworking can be used for experimentation, to create works of art, for enjoyment, as its own profession,or as part of a profession. The many specialized fields of modern metalworking can be grouped under the categories of joining, forming, or cutting.
Beginning:
Its historical roots span cultures,civilizations, and millenia. Metalworking has evolved from the discovery of smelting various ores, producing malleable and ductile metal useful for tools and adornments.
Now in days:
Model metalworkingprocesses, though diverse and specialized, can be categorized as forming, cutting or joining processes. Today's machine shop includes a number of machine tools capable of creating a precise, useful workpiece.
Metalworking categories:
It is generally is divided into the following categories, forming, cutting, and, joining. Each of these categories contain various processes.
Forming modifies metalwithout removing or adding anything to the original workpiece. This can be done with pressure and/or heat. Forming processes include casting, the melting and pouring of metal into a mold, as well asmany processes performed with the metal at room temperature, such as bending, drawing, rolling, and stamping.

Cutting processes are any of those used in metalworking that results in a separation of theworkpiece into two pieces. Machining uses cutting instruments such as a drill or saw, and produces swarf (chips of metal). Burning uses a torch, and does not produce swarf.

General Processes:...