Conical twin screw

Materials used for screw barrel:

Type of screw:
[Different plastic properties, you can choose different structure of screw, can improve the effect of plasticization] gradient type, mutation type, wave type, barrier type, double screen type, split type, separation type, exhaust type, pin type, mixed type, double-head type, three-head type, multi-head type, etc.



The following is the screw small end size, the large end size according to the compression ratio design.
Specifications:
Φ 15 / Φ 30, 25 / Φ Φ 55, 75, 35 / Φ Φ Φ 40 / Φ 83, 45 / Φ Φ 90-99, 48 / Φ Φ 112-117, 50 / Φ Φ 105-110, 51 / Φ Φ 105-120, 55 / Φ Φ 110-125, 125, 58 / Φ Φ Φ 60 / Φ 125-129, 65 / Φ Φ 120-132, 68 / Φ Φ 147, 70 / Φ Φ 150, 74 / Φ Φ 156-162, 80 / Φ Φ 143-156-163, 86 / Φ Φ 177, 92 / Φ Φ 184-188,
Φ 193, 95 / Φ Φ/Φ 203 105.



Applicable Scope:
PVC wood-plastic, PE wood-plastic, ultra-high molecular plate, no-fire brick pallet, more than 1 to 2 high calcium gusset plate, 50-400 high calcium pipes, 50-300 high calcium profiles, soft PVC sheet, PVC foam board and other ordinary plastics, PP, PE, ABS, PVC, raw material granulation, production of pipes, profiles, sheets and other products

Product technical index
Technical parameters
Modulating hardness: HB280-320
Ammonia hardness: HV850-1000
Ammoniation depth: 0.45 -- 0.7mm
Ammoniation embrittlement: ≤ 2
Surface roughness: Ra0.4
Screw straightness: 0.015mm
Hardness of surface chrome plating layer after ammoniation: ≥900HV
Thickness of chrome plating layer: 0.025 -- 010mm
Double alloy hardness: HRC50-65



Materials and Processes
Premium 38CrMoAIA (41CrAIMO7)
High quality duplex stainless steel
42 crmo
40 cr
Zinc 3 # steel
SKD61 (H13)
Gr12MoV
High quality powder metallurgy materials
Cold and hot spraying hard metal process
Advanced ammoniation process
Corrosion - resistant, wear - resistant bimetal spraying process