.

Computer controlled memory impact testing machine

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Whats/App: +86 185 0176 3615

Web: qinsun-lab.com

Tapered twin-screw extruders are primarily used for direct forming of pipes, sheets, and profiles from materials such as rigid polyvinyl chloride (UPVC), while also serving as plastic modifiers and pelletizers for powder materials. With different molds, they can directly extrude sheets, pipes, and profiles for experimental purposes.

Standards

JB/T 11343-2013:Martindale Abrasion and Pilling Tester

JB/T 5420-2014:Fabric Abrasion Tester

JB/T 6492-2014:Fabric Pilling Tester

JB/T 6491-2015:Fabric Snagging Tester

T/GDPIA 21-2020:Test Method for Abrasion and Pilling Resistance of Textiles (Martindale Method)

T/GDPIA 16-2020:Test Method for Fabric Pilling Resistance

T/GDPIA 22-2020:Test Method for Fabric Snagging Resistance

T/ZZB 1351-2019:Specification for Fabric Abrasion and Pilling Tester

T/CPMIA 0201-2022:Test Method for Abrasion Resistance of Textile Materials (Martindale Method)

Features

Screw Structure and Motion:

Conical Design: The feed section features a larger diameter, while the homogenizing section has a smaller diameter, creating a forced thrust to prevent material overheating.

Counter-Rotation: Two screws mesh in opposite directions, conveying material axially through the screw gap while applying shear force. Ideal for processing plastics like PVC and polyolefins.

Plasticizing and Extrusion Process:

Heating and Cooling: Built-in cast aluminum heaters and cooling fans within the barrel, combined with gradient temperature control technology, precisely regulate the processing temperature range.

‌Vacuum Degassing‌: Ensures uniform plasticization and minimizes bubbles and impurities through a vacuum degassing system.

‌Energy Efficiency and Environmental Protection‌:

‌Variable Frequency Drive‌: Compatible with VFD motors for energy-saving operation.

‌Waste Heat Recovery‌: Selected upgraded models incorporate waste heat recovery systems to further enhance energy efficiency.

Technical Parameters

CategorySpecification
Impact Energy 2/4 J (simply supported beam); 2.75/5.5 J (cantilever)
Sampling Rate 10 µs
Resolution 16 bits
Load Measurement Accuracy ≤ 1%
Impact Knife Angle 30°
Pendulum Torque (Simply Supported Beam) 2.1436 Nm, 1.0718 Nm, 0.5359 Nm
Pendulum Torque (Cantilever Beam) 2.9474 Nm, 1.4737 Nm
Pendulum Pre-lift Angle 150°
Simply Supported Beam
Impact Speed 2.9 m/s
Distance from Pendulum Shaft Center to Sample Center 230 mm
Blade Angle 30°
Blade Radius 2 mm
Support Corner Radius 1 mm
Support Front Angle
Support Rear Angle 10°
Support Span 40. 60. 70 mm
Sample Type and Size (L × W × T) 380×10×4 mm, 50×6×4 mm, 120×15×10 mm
Cantilever Beam
Impact Speed 3.5 m/s
Distance from Pendulum Shaft Center to Sample Center 335 mm
Blade Angle 75°
Blade Radius 0.8 mm
Front Edge Angle
Blade Back Angle 10°
Sample Type and Size (L × W × T) 80×10×4 mm63.5 × 12.7 × 12.7 mm63.5 × 12.7 × 6.4 mm63.5 × 12.7 × 3.2 mm

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