Building Block Screw Barrel

详情

•        inner Diameter：Ø**-Ø**0   

•        Effective length：****0mm        

•        Quenching and tempering hardness: HB**0 to **0°

•        Nitration hardness: HV**0 to 1,**0°

•        Nitrated layer depth: 0.5 to 0.8mm

•        Thickness of Cr-coating Layer: 0.***0.1mm

•        Nitration fragility:≤grade 1

•        Surface roughness: 0.4Ra

•        Straightness: 0.**5mm

•        Cr-coating layer hardness: HV≥**0HV

•        Depth of Bimetallic Layer: 2mm to 5mm

•        Bimetallic hardness: HRC*6 to *5° (Ni-based alloy)Material :quality alloy steels

•        ① AISI***0,***7,***0

•        ② EN**-B

•        ③ *8CrMoALA(JIS SACM**5)

•        ④ *2CrMo (JIS SCM**0)

•        ⑤ 9Cr*8MoV

•        ⑥ CW6Mo5Cr4V2

Heat-treatment:

•        Nitriding treatment

•        Electroplated hard-chrome finish  

•        High-frequency quenching

•        Spray coating Bimetallic-alloy

•        vacuum quenching