Beijing Coremachine Technology Development Co., Ltd.

China Manufacturer with main products: Single Screw, Barrel

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Twin Screw & Barrel

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Place of Origin: Beijing in China



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

Service Process

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