| The process of manufacturing metal components | | | | by a compressive force that is applied to a |
| is generally called metal fabrication. Metal | | | | ram. The extruded piece that emerges has the |
| fabrication processes may be classified as | | | | desired shape. In general, extrusion is used |
| cold, warm, and hot working depending on the | | | | to produce cylindrical bars or hollow tubes, |
| temperature at which the material is | | | | but shapes of irregular cross sections may be |
| processed. At eMachineShop, many things are | | | | produced from the more readily extrudable |
| transformed by metal fabrication processes, | | | | metals, such as Aluminum. |
| such as bending, milling, cutting, punching, | | | | |
| drilling, turning, grinding and threading. | | | | • Drawing : Drawing is the pulling of a |
| Metal parts made range from small parts the | | | | metal piece through a die having a tapered |
| size of paper clips and even smaller using | | | | bore by means of a tensile force that is |
| photochemical milling, to large industrial | | | | applied on the exit side. Rod, wire and |
| parts constructed using large CNC milling and | | | | tubing products are commonly fabricated by |
| turning machines.eMachineShop uses a wide | | | | drawing. |
| range of metal fabricating machinery and | | | | |
| machining processes online to meet virtually | | | | There are several methods of metal removing |
| all client metal fabrication needs. | | | | such as metal cutting, abrasive processes and |
| fabricationcan be broadly divided into | | | | non-conventional metal removing processes. |
| forming, removal and non-conventional, which | | | | Sawing, for instance, is a type of cutting in |
| is further sub divided into several | | | | which the cutting tool is a blade that has a |
| categories. | | | | series of small teeth, with each tooth |
| | | | removing a small amount of material. Shearing |
| • Forging : Forging involves forming | | | | on the other hand is a metal cutting process |
| work pieces by compressive force at high | | | | through which flat surfaces and various |
| heat. Parts such as crankshafts, connecting | | | | cross-sections with grooves and notches are |
| rods, gears and bolt heads can be made by | | | | produced. |
| forging. | | | | |
| | | | Face milling and end milling are some of the |
| • Rolling : Rolling is a process of | | | | types of cutting used. Grinding - on the |
| reducing the thickness of a long work piece | | | | other hand -- is a chip removal process in |
| by compressive forces using a set of rolls. | | | | which the cutting tool is an abrasive grain |
| Plates used for Machine structures, vessels | | | | wheel. The different types of grinding |
| and sheets used for automobile and aircraft | | | | processes are surface grinding, cylindrical |
| bodies, appliances and furniture are created | | | | grinding, internal grinding and centerless |
| by rolling. Rolled stock is often cut using | | | | grinding. For extremely thin material, |
| water jet or laser cutters. | | | | photochemical milling may be used. In this |
| | | | process, a caustic chemical etches away |
| • Extrusion : During extrusion round | | | | undesired material. |
| billets are forced through one or more dies | | | | |