
Main technical parameters
1.Workpiece
1.1 Name:Piston rod( no slender shaft)
1.2 Material:20#,45#,40Cretc,Mainly 45#
1.3 diameter range:φ80mm-φ160mm;
1.4 length range:5500-7500mm.
1.5 surface quality of input bar requirement:roughness:Ra0.1--0.2;straightness:0.1/1000.
1.6 plating rate:4500----6000m/h(take example of plate thickness :0.025mm,one channel).
1.7 maximum feeding rate:8.0m/h
2.The surface quality of finished workpiece
2.1 Thickness of plating layer: 0.02-0.05mm(unilateral).
2.2 Appearance:Chromium plating layer must be continuous, meticulous crystallization, smooth surface, no leakage plating area. The surface of the coating is not allowed to have pinhole, chromium lump, rough, burr, excoriation and other defects.
2.3 Chromium layer hardness:HV≥800,the adhesion of chromium plating layer must be strong, the chromium layer should not be warped,peeled and shedding when doing the experiment with a knife.
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