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