Titanium coated screw

Titanium alloy screw (titanium coated screw) specialized screw for plastic machine

Titanium alloy screw

Overall hardness: HRC62 ° -68 °

Usage differentiation: injection molding machine/electric wood machine

Processing dimensions: minimum diameter of Ø 14mm - maximum diameter of Ø 120mm

Applicable plastics: LCP, PBT, PET, PPC, PPS, PAR, etc. Tianxing mechanical arm accessories wholesale add more than 30% glass fiber, or add other additives such as magnetic powder, ceramic powder, aluminum magnesium powder, iron powder and other engineering plastics

Material and processing technology:

Imported Japanese SKD61

SKH-9 (YXMI high-speed steel)

Adopting the overall quenching and secondary tempering process

Product features:

Wear resistant and corrosion-resistant, suitable for high wear product processing requirements

Introduction to PET injection molding machine screw:

１. The melting point is 250 ℃ -260 ℃, and the temperature for blow molding PET is relatively wide, about 255 ℃ -290 ℃. The enhanced grade GF-PET can reach 290 ℃ -315 ℃, etc;

2. High melting point, low viscosity, strong adhesion to metals, and easy hydrolysis;

3. Hydrophilicity, the adhesive is sensitive to water at high temperatures, with a drying temperature of 150 ℃ to 160 ℃ and a time of more than 4 hours.

Parameter selection:

1. L/D is generally taken as 20-22, with a three-stage distribution of L1=50-60% and L2=20-30%;

2. Adopting a low shear, low compression ratio screw compression ratio of ε=1.8-2.2, the mechanical arm accessory holder may change color or become opaque due to excessive shear heat h3=0.09-0.10D;

When using recycled materials (sheet materials), increase the conveying capacity of the feeding section and adopt a forced feeding plasticization system.