|
형단조(型鍛造; closed die forging )
Forging is the process of plastically deforming solid metal (usually heated) from one solid state or shape
into another shape between two or more dies under high pressure.
Closed die forging is the process whereby this deformation is confined within a shaped cavity in the dies to
achieve a desired engineering configuration. Depending on such factors as complexity, tolerances, economics
and performance, the dies required to produce closed die forgings range from complex multi-segmented precision
wrap dies to simple two-piece conventional top-and-bottom dies.
Materials used for closed die forging
A wide variety of metals can be forged into high quality parts through the closed die process.
These materials include carbon steel, alloy steel, stainless steel, high alloy steel, low alloy steel,
inconel, tool steel, aluminum alloy, copper alloy, titanium, and much more.
Benefits of the closed die forging process
- Three-dimensional shapes
- High strength
- Soundness
- Homogeneity
- Enhanced density
- Production of intricate and difficult geometries
In addition to three dimensional control, closed die forgings offer other desirable characteristics such as
improved mechanical properties, enhanced density, and aligned grain flow. These three characteristics all
contribute to soundness, homogeneity, flow-line characteristics, and high strength. Closed die forging can
also produce either symmetrical or non symmetrical parts as well as simple or complicated dimensional shapes.
Intricate parts are also commonly produced during the closed die process including those that are long and
thin or that involve vertical projections or other designs.
|
