You may know a lot about hydraulic cylinder forgings, but many people don't know what the processing principle of hydraulic cylinder forgings is, so the following article will mainly tell you.
　
　　Cylinder input comparison :

　　Cylinder forgings

　　Grinder or milling machine (tens of thousands - millions), hobbing (1000 - tens of thousands). After rolling, the hole surface roughness is reduced from Ra3.2~6.3m before rolling to Ra0.4~0.8m, the hole surface hardness is increased by about 30%, and the cylinder inner surface fatigue strength is increased by 25%. If only the effect of the cylinder barrel is considered, the service life of the cylinder will be increased by 2~3 times, and the efficiency of the boring and rolling process will be increased by about 3 times compared to the grinding process. The above data shows that the rolling process is efficient and can greatly improve the surface quality of the cylinder.
　

　　Characteristics of cylinder after rolling:
　　

　　No sharp edge on the surface, the seal or seals will not be damaged by long time movement friction.
　　

　　The processing principle of hydraulic cylinder forgings.
　　

　　Hydraulic cylinder forging is a kind of pressure finishing processing, using the cold plasticity of metal at room temperature, using rolling tools to apply a certain pressure to the surface of the workpiece, so that the metal on the surface of the workpiece produces plastic flow, filling the original residual low valley, thus reducing the roughness of the surface of the workpiece. Due to the plastic deformation of the surface metal after rolling, the surface microstructure is cold hardened, the grains become finer, and a dense fibrous and residual stress layer is formed, which increases the hardness and strength, thus improving the wear resistance, corrosion resistance and compatibility of the workpiece surface. Rolling is a plastic processing method without cutting. More technology can be found in:Non-cutting machining technology is convenient and can be controlled for accuracy. Hydraulic cylinder forgings several advantages:
　　

　　1.Improve the surface roughness, basically can reach Ra≤0.08m.
　　

　　2. Correct roundness, ellipticity can be ≤ 0.01mm.
　

　　3. Improve the surface hardness, eliminate stress deformation, hardness HV ≥ 4

　　4. Have residual stress layer after processing, fatigue strength increased by 30%.
　　

　　5. Improve the matching quality, reduce wear and tear, extend the service life of the parts, but the parts processing cost instead of reducing.

　　Hydraulic cylinder forging is a common mechanical processing method, mainly used to produce mechanical parts blanks to produce mechanical parts or factory-made parts. The quality of hydraulic cylinder forgings is directly related to the quality of mechanical parts and production efficiency, so the quality requirements of hydraulic cylinder forgings are very high, generally in the forging materials, forging process, equipment and production organization to put forward strict technical requirements.