Differences Between PC Screw Barrels and Ordinary Screw Barrels

Structure

PC screw barrels have mixing heads to improve mixing.

PC screw barrels have smooth, dead-free surfaces to prevent material from sticking and degrading.

PC screw barrels have low compression ratios to reduce shear heat.

PC screw barrels have larger gaps between the screw and the barrel to improve flow.

Material

PC screw barrels are made of corrosion-resistant and wear-resistant materials such as stainless steel, nitrided steel, and titanium alloy.

Ordinary screw barrels are typically made of carbon steel or alloy steel, which are not resistant to the corrosive gases emitted by PC materials.

Processing

PC screw barrels are precision processed using methods such as grinding, hard chrome plating, and nitriding to ensure a smooth, defect-free surface.

Ordinary screw barrels do not require such stringent processing.

Use

PC screw barrels should be cleaned regularly, have料温controlled, and inspected regularly.

Ordinary screw barrels do not require these precautions.

Other

PC screw barrels are more expensive and have a shorter lifespan than ordinary screw barrels.

Not all injection molding machines require PC screw barrels.

In addition to the above, here are some additional points from netizens:

Mixing heads can improve the pigment dispersion and flow of PC materials.

PC materials are hygroscopic, so PC screw barrels should have good sealing properties.

PC screw barrels have a low length-to-diameter ratio, which is beneficial for plasticization and homogenization.