Mastering Your Heat: A Deep Dive into Master Forge Wood Stove Parts
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Free forging. This refers to a forging method in which simple, general-purpose tools, or the upper and lower anvils of forging equipment, are used to directly apply external force to the workpiece, causing the workpiece to deform and obtain the required geometric shape and internal quality of the forging. Forgings produced using the free forging method are called free forgings. Free forging mainly produces forgings with small batch sizes, using forging equipment such as forging hammers and hydraulic presses to shape the workpiece and obtain qualified forgings. The basic processes of free forging include upsetting, drawing, punching, cutting, bending, twisting, upsetting and forging. Free forging adopts hot forging methods.
The main materials used in forging are carbon steel and alloy steel of various compositions, followed by aluminum, magnesium, copper, titanium and their alloys. The original states of the materials include bars, ingots, metal powders and liquid metals. The ratio of the cross-sectional area of the metal before deformation to the cross-sectional area after deformation is called the forging ratio. The correct selection of forging ratio, reasonable heating temperature and holding time, reasonable initial and final forging temperatures, reasonable deformation amount and deformation speed are of great significance to improving product quality and reducing costs.
Different forging methods have different processes, among which the hot die forging process is the longest. The general order is: blank preparation; blank heating; roll forging; die forging; trimming; punching; straightening; intermediate inspection, checking the dimensions and surface defects of the forging; heat treatment, used to eliminate forging stress and improve machinability; cleaning, mainly removing surface scale; straightening; inspection, generally forgings need to undergo appearance and hardness inspection, and important forgings also need to undergo chemical composition analysis, mechanical properties, residual stress and other inspections and non-destructive testing.
Compared with castings, forging can improve the microstructure and mechanical properties of metals. After hot working deformation by forging, the original coarse dendrites and columnar grains in the casting structure are transformed into fine and uniform equiaxed recrystallized grains due to metal deformation and recrystallization. The original segregation, looseness, pores, and inclusions in the ingot are compacted and welded, making the structure denser and improving the plasticity and mechanical properties of the metal.
The development of "giant heavy-duty forging operation equipment" has been successfully completed and passed expert acceptance, filling the gap in China's large forging machinery and equipment technology field.
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