Twin Screw & Barrel
• Product Specification and technical data

• Ø 65, Ø 80, Ø 90, Ø 105, Ø 125, Ø 146,

• Ø 150, Ø 170, Ø 180, Ø 190, Ø 200.

• Hardness of quenching and tempering: HB240° ～280°

• Hardness of nitration: HV850° ～1000°

• Depth of Nitrated Layer: 0.45～0.7mm

• Fragility of nitration: ≤ Grade 2

• Surface roughness: Ra0.4

• straightness: 0.015mm

• Hardness of Cr-coating Layer: HV≥ 900HV

• Nitrided layer thickness: 0.05～0.10mm

• Thickness of Cr-coated Layer: 0.8～2.0mm

• Hardness of bimetallic alloy : HRC56° ～65° (Ni-based alloy)

• material : quality alloy steel

• ① 38CrMoALA(JIS SACM645)

• ② 42CMo(JIS SCM440)

• ③ 9Cr18MoV

• ④ CW6Mo5Cr4V2
 

• Heat-treatment:

• Nitriding treatment

• Electroplated hard-chrome finish

• High-frequency quenching

• Spray coating Bimetallic-alloy

• vacuum quenching