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Rule based DFM analysis for forging
Rule based DFM analysis for forging. Forging is the controlled deformation of metal into a specific shape by compressive forces. The forging process goes back to 8000 B.C. and evolved from the manual art of simple blacksmithing. Then as now, a series of compressive hammer blows performs the shaping or forging of the part. Modern forging uses machine driven impact hammers or presses which deform the work-piece by controlled pressure.
The forging process is superior to casting in that the parts formed have denser microstructures, more defined grain patterns, and less porosity, making such parts much stronger than a casting. All metals and alloys are forge-able, but each will have a forge-ability rating from high to low or poor. The factors involved are the material’s composition, crystal structure and mechanical properties all considered within a temperature range. The wider the temperature range, the higher the forge-ability rating. Most forging is done on heated work-pieces. "Cold forging" can occur at room temperatures. The most forge-able materials are aluminum, copper, and magnesium. Lower ratings are applied to the various steels, nickel, and titanium alloys. Hot forging temperatures range from 93o C (200o F) to 1650o C (3000o F) for refractory metals.
Here is the Rule-based DFM analysis for Forging process. These rules can be incorporated at the design stage to improve the efficiency of the process. DFM refers to design for manufacturability.
==Types of Forging==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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