This series of screw is suitable for pvc made of ... , pinch plate, shape made of ... , pipe made of ... And pelletizing. The compression ratio of the

Specifications

We have outstanding theoretical background and practical experience, providing optimum designs of screws and barrrels for our cu

• conical twin screw barrel

This series of screw is suitable for pvc made of ... , pinch plate, shape made of ... , pipe made of ... And pelletizing. The compression ratio of the screw and barrel can be designed

• according to different products and mixtures.

• conical twin screw barrel

• technical specifications:

• 1) made of ... Quality 38crmoala

• 2) hardness after hardening and tempering: hb240-280

• 3) nitride hardness: hv850-1000

• 4) nitride case depth: 0.45 - 0.7mm

• 5) nitride brittleness: less than grade 2

• 6) surface roughness: ra 0.4

• 7) screw straightness: 0.015mm

• 8) surface chromium-plating's hardness after nitriding: =900hb

• 9) chromium-plating depth: 0.05 - 0.10mm

• 10) alloy hardness: hrc50-65

• 11) alloy depth: 0.8 - 2.0mm