Established in 1994, Cometech Testing Machines, Taiwan’s best quality control instrument manufacturer, which has invested in product development, design and manufacturing for a long time. The quality and function of our products continue to update and improve. We have a team of engineers with software and hardware R&D capabilities. In Taiwan, we are the pioneer of QC instrument industry. We are also the largest instrument manufacturer in Taiwan and have our own R&D center.
 
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Impact Testing Machine

Cometech QC-640D Automated Impact Specimen V-Notcher

Key Features

  • Fully Electric Automated System: Equipped with a precision ball screw and electric drive, this machine automates the notching process to eliminate human error and ensure consistent specimen quality.

  • Optimized Productivity: The platform operates at high speed during non-cutting strokes and automatically adjusts to the pre-set cutting speed during operation, significantly reducing preparation time.

  • High Versatility: Both cutter rotational speed (RPM) and platform feed rate are easily adjustable via the control panel to accommodate materials of varying hardness.

  • Enhanced Safety & Cleanliness: Features a fully enclosed cutter design for operator safety. An optional automated dust extraction system activates during cutting and shuts off on the return stroke to keep the workspace clean.

  • Multi-Specimen Clamping: The improved fixture design offers increased clamping space, allowing multiple specimens to be notched simultaneously for improved workflow efficiency.

Technical Specifications

  • Conforming Standards: ISO 179, ISO 180, ASTM D256, ASTM D6110, JIS K7110, ISO 2818.

  • Cutting Speed (Cutter): 500 ~ 2,500 RPM (Adjustable).

  • Platform Moving Speed: 30 ~ 700 mm/min.

  • Platform Stroke: 200 mm.

  • Cutting Depth: 8.0 ± 0.2 mm (ISO) / 10.16 ± 0.05 mm (ASTM). Easily switchable using standard blocks.

  • Cutter Forms: * Type A: 45°, r = 0.25 mm (Standard).

    • Type B: 45°, r = 1.0 mm (Optional).

    • Type C: 45°, r = 0.1 mm (Optional).

  • Machine Dimensions: 48 × 54 × 38 cm | Weight: Approx. 80 kg.

Cometech QC-633 Manual Drop Dart Impact Tester

Key Features

  • Standard Compliance: Fully complies with ASTM D1709 and GB/T 9639 for determining the impact resistance of plastic films (50% failure weight).

  • Dual Method Capability: Seamlessly supports both Method A and Method B testing setups within a single frame.

  • Electromagnetic Release Mechanism: Uses an electronic magnet to release the dart, eliminating manual vibration and ensuring high repeatability and vertical drop accuracy.

  • User-Friendly Design: Easy height adjustment and secure specimen clamping using a circular holder.

  • Robust Construction: High-quality frame ensures stability and long-term reliability in industrial environments.

Technical Specifications

Specification Method A Method B
Drop Height 66 cm (26″) 152.4 cm (60″)
Dart Diameter Ø 38.1 mm Ø 50.8 mm
Dart Material Aluminum / Phenolic Stainless Steel
Initial Dart Weight 32 ± 2 g 320 ± 10 g
Loading Weights Various (5g to 120g) Various (15g to 320g)
  • Specimen Holder Diameter: Inside Ø 127 mm (Standardized).

  • Release Method: Electronic Magnet (to reduce vibration).

Applications

  • Packaging Industry: Evaluating the impact toughness of stretch films, plastic bags, and laminated materials.

  • Quality Assurance: Essential for testing plastic sheet durability and material performance validation.

Testing Video

Cometech QC-633A Electronic Drop Dart Impact Tester

Key Features

  • Pneumatic Clamping System: Utilizing high-pressure pneumatic clamps to ensure consistent and uniform tension on the specimen, significantly reducing human error compared to manual clamping.

  • Electromagnetic Release Mechanism: The electronic release ensures a perfect vertical free-fall without any mechanical interference or vibration, providing superior repeatability.

  • Adjustable Dual Method Frame: Designed to support both Method A (66 cm drop height) and Method B (152.4 cm drop height) according to international standards.

  • Intuitive Operation: Features a centralized control for clamping and dart release, enhancing both operator safety and testing throughput.

  • Heavy-Duty Construction: Built with premium materials for long-term stability in high-volume laboratory and industrial environments.

Technical Specifications

  • Conforming Standards: ASTM D1709, GB/T 9639, JIS K7124.

  • Test Configurations:

    • Method A: Drop Height 660 ± 10 mm / Dart Head Ø 38.1 ± 0.13 mm (Aluminum/Phenolic).

    • Method B: Drop Height 1524 ± 10 mm / Dart Head Ø 50.8 ± 0.13 mm (Stainless Steel).

  • Clamping Type: Pneumatic (Requires 6 kg/cm² air pressure).

  • Clamp Internal Diameter: Ø 127 mm (Standardized).

  • Release Method: Electromagnetic.

  • Loading Weights: Comprehensive set of additional weights provided to determine the F50 impact failure weight.

Applications

  • Packaging Sector: Critical for evaluating the toughness of plastic films, specialty laminates, and thin flexible sheets.

  • Quality Assurance: Ideal for high-end film manufacturers requiring rapid testing cycles and highly standardized results.

Cometech QC-636 Drop Weight Impact Tester

Key Features

  • High-Precision Vertical Guide: Engineered with a rigid vertical guide rail system to ensure the impactor falls freely and strikes the specimen at the exact designated center point.

  • Anti-Rebound Mechanism: Features an automatic secondary impact prevention device that catches the striker after the initial hit, preventing multiple impacts that could distort test results.

  • Versatile Testing Setup: Supports interchangeable strikers and adjustable mass sets, allowing users to customize impact energy according to various material specifications.

  • Safety-First Operation: Equipped with an electric hoist for weight positioning and a secure release system, often accompanied by protective enclosures to ensure operator safety.

  • Multi-Specimen Support: The base is designed to accommodate both flat plates and cylindrical specimens (using V-blocks) as required by international standards.

Technical Specifications

  • Conforming Standards: ISO 3127, ASTM D2444, ASTM D5628, JIS K7211.

  • Maximum Drop Height: 2,000 mm (Customized heights available upon request).

  • Impact Mass Range: Configurable based on requirements (e.g., 0.5 kg to 10 kg or higher).

  • Lifting Method: Electric motor-driven hoist with precision positioning.

  • Striker Types: Available in Type A, Type B, and Type C geometries to match specific testing protocols.

Applications

  • Piping Industry: Essential for evaluating the impact resistance of PVC, PE pipes, and electrical conduits against external forces.

  • Construction Materials: Testing the durability of rigid plastic sheets, engineering polymers, and composite panels.

  • R&D and Quality Control: Analyzing material fracture toughness and identifying energy absorption limits for structural components.

Cometech QC-637B Dropping Impact Tester

Key Features

  • Advanced Single-Wing Design: Specifically engineered to ensure a stable, vibration-free release. The wing retracts rapidly, allowing the specimen to fall freely without interference for maximum accuracy.

  • Comprehensive Drop Testing: Versatile setup allows for precise testing of Face, Edge, and Corner drops, simulating various real-world shipping and handling accidents.

  • Motorized Height Adjustment: Equipped with an electric motor for rapid and precise height positioning, featuring a digital display for easy setup and repeatability.

  • Heavy-Duty Rigid Base: The high-mass steel base is designed to withstand continuous high-energy impacts while ensuring consistent energy transfer according to testing standards.

  • Safety Integration: Includes safety limit switches and emergency stop controls to protect the operator and the equipment during high-load testing.

Technical Specifications

  • Maximum Capacity: 60 kg (Customized higher capacity models available).

  • Drop Height Range: 300 ~ 1,500 mm (Digitally controlled).

  • Maximum Specimen Size: 800 × 800 × 800 mm.

  • Impact Wing Dimension: 200 × 700 mm.

  • Drive Mechanism: Electric motor for lifting; Pneumatic or Electromagnetic release system.

Applications

  • Packaging & Warehousing: Essential for testing the structural integrity of corrugated boxes and protective packaging materials.

  • Consumer Electronics: Evaluating the drop durability of mobile devices, household appliances, and fragile components.

  • Logistics & QA: Validating product safety and packaging performance in accordance with ISTC and ASTM D5276 standards.

Cometech QC-913 Series Digital Metal Impact Tester

Key Features

  • Advanced Digital Interface: Features a 7-inch color touch panel that automatically displays impact energy values, eliminating the need for complicated manual calculations.

  • High-Precision Measurement: Utilizes a high-resolution encoder to capture the pendulum’s angle, combined with an automated friction and wind resistance compensation mechanism for superior accuracy.

  • Dual-Capacity Pendulum Design: A single machine supports two capacity levels (e.g., 150J and 300J), offering versatile testing ranges for different material thicknesses and grades.

  • Integrated Safety Shield: Equipped with a full CE-compliant safety enclosure. The system includes an interlock that prevents the pendulum from releasing while the shield is open, ensuring maximum operator safety.

  • Automated Pendulum Return: Features an auto-release and auto-return function. After the impact is completed, the pendulum automatically returns to its initial high-position, ready for the next test.

Technical Specifications

  • Conforming Standards: ASTM E23, ISO 148, EN 10045, JIS Z2242, GB/T 229.

  • Test Type: Charpy.

  • Energy Capacity:

    • Model QC-913A: 100J / 150J.

    • Model QC-913B: 300J / 500J.

  • Impact Speed: 5.0 ~ 5.5 m/sec (±10%).

  • Minimum Angle Display: 0.05°.

  • Selectable Units: J, J/mm, J/cm, J/mm², J/cm², kJ/m², kg-cm, ft-lb, etc.

  • Data Management: Supports USB data export and optional analysis software for professional report generation.

Applications

  • Metallurgical & Steel Industry: Essential for testing structural steel, alloys, and casting quality.

  • Automotive & Aerospace: Validating the impact toughness of safety-critical components and structural materials.

  • Research & QA Labs: Performing standardized material characterization and compliance testing according to global industry norms.

Testing Video

Cometech QC-915 Notch Broaching Machine

Key Features

  • Precision Engineering: Specifically designed for creating high-accuracy V and U notches on metal impact specimens.

  • Simplified Operation: Features a streamlined process that creates the specimen notch in a single stroke, significantly improving efficiency over traditional methods.

  • High-Accuracy Cutter: Equipped with precision-ground cutter edges to ensure every notch meets strict dimensional tolerances.

  • Standard Compliance: Offers interchangeable cutters to comply with various international standards such as ISO 148 and ASTM E23.

  • Robust & Stable Design: Built with a heavy-duty frame to ensure stability and reduce vibration during the broaching process.

Technical Specifications

  • Conforming Standards: ISO 148, ASTM E23.

  • Notch Types:

    • V-notch: Compliant with ISO 148 (Standard Accessory).

    • U-notch: Compliant with ISO 148 (Optional Accessory).

  • Specimen Dimension: 10 x 10 x 55 mm.

  • Included Accessory: Scrap Container for easy maintenance.

  • Dimensions: 43 x 48 x 117 cm.

  • Weight: Approx. 60 kg.

Applications

  • Metallurgical Industry: Essential for preparing specimens for Charpy and Izod impact testing.

  • Quality Control & Labs: Ensuring standardized specimen preparation for impact resistance analysis according to global norms.

Cometech QC-639C / QC-639D Mechanical Impact Tester

Key Features

  • Mechanical Pointer Display: Features a large, high-visibility analog gauge that records the impact angle and absorbed energy, allowing for direct and intuitive reading.

  • Dual Test Capability: Easily switch between Izod and Charpy test methods by quickly swapping the pendulum hammers and vises, providing flexibility for various international standards.

  • Calculation Support Software: Includes dedicated software to assist users in calculating final test results and applying energy loss corrections for improved data integrity.

  • Precision-Engineered Structure: Built to ensure accurate mass center and impact velocity, minimizing mechanical friction and vibration for consistent performance.

  • Safe Operational Design: Designed with a dedicated impact zone and specimen collection area to ensure operator safety and streamline the testing process.

Model Comparison

Feature Model QC-639C Model QC-639D
Max Capacity 12 J 25 J
Hammer Capacities 1, 2.75, 5.5, 11 J 1, 2.75, 5.5, 11, 25 J
Machine Weight Approx. 100 kg Approx. 160 kg
Dimensions 90 x 30 x 70 cm 95 x 38 x 76 cm

Technical Specifications

  • Conforming Standards: ASTM D256, ASTM D6110, ISO 179, ISO 180, ISO 13802.

  • Initial Impact Angle: 150°.

  • Gauge Resolution: 1° (Angle scale).

  • Best Accurate Range: 20% to 80% of full capacity.

  • Target Materials: Rigid plastics, reinforced nylon, glass-fiber reinforced plastics, and other macromolecule materials.

Cometech QC-639S / QC-639T Digital Impact Tester

Key Features

  • Intuitive Color Touch Screen: Full control via a digital touch panel that displays absorbed energy and impact angles immediately after each test.

  • Automated Result Calculation: Automatically calculates Impact Strength in various units (J/m, kJ/m², kg-cm/cm, etc.), significantly reducing manual data entry and errors.

  • High-Resolution Digital Encoder: Replaces traditional analog pointers with a high-precision encoder for superior angular measurement and consistent repeatability.

  • Friction & Windage Compensation: Integrated software automatically compensates for energy loss due to air resistance and mechanical friction, ensuring true material property readings.

  • Versatile Dual Testing: Seamlessly switch between Izod and Charpy methods by swapping pendulums and anvils/vises.

Model Comparison

Feature Model QC-639S Model QC-639T
Max Capacity 12 J 25 J
Hammer Capacities 1, 2.75, 5.5, 11 J 1, 2.75, 5.5, 11, 25 J
Machine Weight 100 kg 160 kg
Dimensions 90 x 30 x 70 cm 95 x 38 x 76 cm

Technical Specifications

  • Conforming Standards: ASTM D256, ASTM D6110, ISO 179, ISO 180, ISO 13802.

  • Initial Release Angle: 150°.

  • Display Interface: Digital Touch Screen (Outputs Energy, Impact Strength, and Angle).

  • Data Connectivity: Optional PC software connection for advanced data logging and professional reporting.

Cometech QC-639P / QC-639Q Computerized Impact Tester

Key Features

  • Full Computerized Analysis: Operated and managed via professional software, allowing for systematic high-volume data logging and instantaneous professional report generation.

  • Automated Energy Loss Correction: The software features built-in algorithms to compensate for wind resistance and mechanical friction, ensuring the most accurate measurement of the material’s true impact energy.

  • Dual Testing Versatility: Efficiently switch between Izod and Charpy test methods with interchangeable pendulums and specimen holders, compliant with major global standards.

  • High-Precision Digital Encoder: Equipped with a high-resolution encoder to track the pendulum’s angular position, providing accuracy that exceeds traditional analog or basic digital systems.

  • Advanced Data Management: Capable of displaying statistical graphs, comparing multiple test results, and exporting data directly to Excel or PDF formats for further analysis.

Model Comparison

Feature Model QC-639P Model QC-639Q
Max Capacity 12 J 25 J
Hammer Capacities 1, 2.75, 5.5, 11 J 1, 2.75, 5.5, 11, 25 J
Machine Weight 100 kg 160 kg
Dimensions 90 x 30 x 70 cm 95 x 38 x 76 cm

Technical Specifications

  • Conforming Standards: ASTM D256, ASTM D6110, ISO 179, ISO 180, ISO 13802.

  • Initial Release Angle: 150°.

  • Control System: PC-based software integration for data acquisition and analysis.

  • Output Parameters: Absorbed Energy (J), Impact Strength (J/m, kJ/m²), Impact Angle, and comprehensive statistical data.

Testing Video

Cometech QC-640A Manual Impact Specimen V-Notcher

Key Features

  • Precision Manual Operation: Specifically designed to create standardized V-notches on plastic impact specimens through a controlled manual cutting process.

  • Adjustable Notch Depth: Features a built-in precision gauge to accurately control the residual depth of the notch, ensuring full compliance with ISO and ASTM standards.

  • Interchangeable Cutters: Supports various cutter geometries (angle and tip radius) to meet different international testing requirements.

  • Compact & Robust Design: Constructed with high-quality materials for long-term durability while maintaining a small footprint, ideal for any laboratory bench.

  • Secure Clamping System: Equipped with a heavy-duty vise to ensure the specimen remains perfectly stationary during the notching process, critical for repeatable results.

Technical Specifications

  • Conforming Standards: ISO 179, ISO 180, ASTM D256, ASTM D6110, JIS K7110.

  • Notch Depth Control: Manually adjustable via a precision micrometer or setting block.

  • Cutter Material: High-Speed Steel (HSS) for superior sharpness and service life.

  • Dimensions: Approx. 35 × 25 × 35 cm.

  • Weight: Approx. 15-20 kg.

Applications

  • Specimen Preparation: Essential for preparing plastic, nylon, and reinforced polymer specimens for Izod and Charpy impact tests.

  • R&D and Educational Labs: A cost-effective solution for institutions requiring high-precision specimen preparation on a budget.

Cometech QC-641 DuPont Impact Tester

Key Features

  • Standard-Compliant Testing: Specifically engineered to meet ASTM D2794 and JIS K5400 standards for evaluating the resistance of coatings to impact-induced cracking and peeling.

  • Precise Height Graduation: Features a clear, easy-to-read vertical scale for accurate positioning of the falling weight, ensuring consistent impact energy levels.

  • Interchangeable Impactors: Equipped with various impact heads and bolsters of different radii to accommodate a wide range of specimen types and coating thicknesses.

  • Rugged & Simple Design: A heavy-duty, maintenance-free frame built for reliability and high-frequency use in demanding quality control environments.

  • Reliable Adhesion Analysis: Provides a professional method for analyzing the flexibility and interfacial adhesion strength of paint films on metal or plastic substrates.

Technical Specifications

  • Conforming Standards: JIS K5400, ASTM D2794, CNS 10756.

  • Maximum Drop Height: 50 cm or 100 cm (Depending on the specific configuration).

  • Impact Weights (Mass): 300g, 500g, 1000g (Additional weights available).

  • Impactor Head Radii: 1/16″, 1/8″, 3/16″, 1/4″, 1/2″.

  • Bolster Radii: 1/16″, 1/8″, 3/16″, 1/4″, 1/2″.

  • Machine Weight: Approx. 30 – 50 kg.

Applications

  • Paint & Coating Industry: Vital for testing automotive finishes, industrial anti-corrosion coatings, and decorative paints.

  • Consumer Appliances: Quality assurance for the exterior coatings of household appliances and electronics.

  • Material R&D: Studying the rapid deformation and fracture behavior of thin films and coating layers.

Head Office :
107/69 Moo 6, Khu Khot, Lam Luk Ka District, Pathum Thani 12130

E-mail : [email protected]
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