Zhoushan Zhongyang Screw Manufacturing Co., Ltd. [China]

Detailed Product Description

Special barrel for extruder  in many specifications.

 Abrasion resistant and corrosion resistant

imported anti-wear alloy

Material:High quality alloy steel

           1)38CrMoAlA

          2)9Gr18MoV

Technics:1)Heat-treatment

              2)Nitriding treatment

              3)Spray coating Bimetallic-alloy

Technical data

Nitriding depth:0.50-0.80mm

Nitriding hardness:900-1000HV

Nitriding barittleness:Less than grade 1

Surface roughness:Ra0.4

Linearity of the screw:0.015mm

Hardness of the chrome plating after nitriding:More than 950HV

Chrome plating thickness:0.025-0.085mm