La description
•Product Specification and technical
data
•inner
Diameter：*****0
•L/D=8～*0
•Hardness of
quenching and tempering：HB**0°ï½ž**0°
•Hardness of
nitration：HV**0°ï½ž***0°
•Depth of
Nitrated Layer：0.*5～0.7mm
•Fragility of
nitration：≤ Grade
2
•Surface
roughness：Ra0.4
•straightness：0.**5mm
•Hardness of
Cr-coating Layer：HV≥**0HV
•Nitrided
layer
thickness：0.*5～0.*0mm
•Thickness of
Cr-coated Layer：0.8～2.0mm
•Hardness of
bimetallic：HRC*6°ï½ž*5°ï¼ˆNi-based
alloy）
•Â
• Material
:quality alloy steel
•â‘Â
*8CrMoALA(JIS SACM**5)
•â‘¡ *2CMo(JIS
SCM**0)
•â‘¢
9Cr*8MoV
•â‘£
CW6Mo5Cr4V2
•Heat-treatment：
•Nitriding
treatment
•Electroplated
hard-chrome finish
•High-frequency
quenching
•Spray coating
Bimetallic-alloy
•vacuum
quenching
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