Impact Testing Machine ⇓
Cometech QC-640D Automated Impact Specimen V-Notcher
Key Features
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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.
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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.
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High Versatility: Both cutter rotational speed (RPM) and platform feed rate are easily adjustable via the control panel to accommodate materials of varying hardness.
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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.
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Multi-Specimen Clamping: The improved fixture design offers increased clamping space, allowing multiple specimens to be notched simultaneously for improved workflow efficiency.
Technical Specifications
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Conforming Standards: ISO 179, ISO 180, ASTM D256, ASTM D6110, JIS K7110, ISO 2818.
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Cutting Speed (Cutter): 500 ~ 2,500 RPM (Adjustable).
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Platform Moving Speed: 30 ~ 700 mm/min.
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Platform Stroke: 200 mm.
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Cutting Depth: 8.0 ± 0.2 mm (ISO) / 10.16 ± 0.05 mm (ASTM). Easily switchable using standard blocks.
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Cutter Forms: * Type A: 45°, r = 0.25 mm (Standard).
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Type B: 45°, r = 1.0 mm (Optional).
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Type C: 45°, r = 0.1 mm (Optional).
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Machine Dimensions: 48 × 54 × 38 cm | Weight: Approx. 80 kg.
Cometech QC-633 Manual Drop Dart Impact Tester
Key Features
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Standard Compliance: Fully complies with ASTM D1709 and GB/T 9639 for determining the impact resistance of plastic films (50% failure weight).
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Dual Method Capability: Seamlessly supports both Method A and Method B testing setups within a single frame.
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Electromagnetic Release Mechanism: Uses an electronic magnet to release the dart, eliminating manual vibration and ensuring high repeatability and vertical drop accuracy.
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User-Friendly Design: Easy height adjustment and secure specimen clamping using a circular holder.
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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) |
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Specimen Holder Diameter: Inside Ø 127 mm (Standardized).
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Release Method: Electronic Magnet (to reduce vibration).
Applications
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Packaging Industry: Evaluating the impact toughness of stretch films, plastic bags, and laminated materials.
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Quality Assurance: Essential for testing plastic sheet durability and material performance validation.
Testing Video ⇓
Cometech QC-633A Electronic Drop Dart Impact Tester
Key Features
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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.
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Electromagnetic Release Mechanism: The electronic release ensures a perfect vertical free-fall without any mechanical interference or vibration, providing superior repeatability.
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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.
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Intuitive Operation: Features a centralized control for clamping and dart release, enhancing both operator safety and testing throughput.
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Heavy-Duty Construction: Built with premium materials for long-term stability in high-volume laboratory and industrial environments.
Technical Specifications
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Conforming Standards: ASTM D1709, GB/T 9639, JIS K7124.
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Test Configurations:
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Method A: Drop Height 660 ± 10 mm / Dart Head Ø 38.1 ± 0.13 mm (Aluminum/Phenolic).
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Method B: Drop Height 1524 ± 10 mm / Dart Head Ø 50.8 ± 0.13 mm (Stainless Steel).
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Clamping Type: Pneumatic (Requires 6 kg/cm² air pressure).
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Clamp Internal Diameter: Ø 127 mm (Standardized).
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Release Method: Electromagnetic.
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Loading Weights: Comprehensive set of additional weights provided to determine the F50 impact failure weight.
Applications
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Packaging Sector: Critical for evaluating the toughness of plastic films, specialty laminates, and thin flexible sheets.
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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
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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.
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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.
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Versatile Testing Setup: Supports interchangeable strikers and adjustable mass sets, allowing users to customize impact energy according to various material specifications.
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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.
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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
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Conforming Standards: ISO 3127, ASTM D2444, ASTM D5628, JIS K7211.
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Maximum Drop Height: 2,000 mm (Customized heights available upon request).
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Impact Mass Range: Configurable based on requirements (e.g., 0.5 kg to 10 kg or higher).
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Lifting Method: Electric motor-driven hoist with precision positioning.
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Striker Types: Available in Type A, Type B, and Type C geometries to match specific testing protocols.
Applications
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Piping Industry: Essential for evaluating the impact resistance of PVC, PE pipes, and electrical conduits against external forces.
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Construction Materials: Testing the durability of rigid plastic sheets, engineering polymers, and composite panels.
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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
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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.
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Comprehensive Drop Testing: Versatile setup allows for precise testing of Face, Edge, and Corner drops, simulating various real-world shipping and handling accidents.
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Motorized Height Adjustment: Equipped with an electric motor for rapid and precise height positioning, featuring a digital display for easy setup and repeatability.
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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.
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Safety Integration: Includes safety limit switches and emergency stop controls to protect the operator and the equipment during high-load testing.
Technical Specifications
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Maximum Capacity: 60 kg (Customized higher capacity models available).
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Drop Height Range: 300 ~ 1,500 mm (Digitally controlled).
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Maximum Specimen Size: 800 × 800 × 800 mm.
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Impact Wing Dimension: 200 × 700 mm.
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Drive Mechanism: Electric motor for lifting; Pneumatic or Electromagnetic release system.
Applications
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Packaging & Warehousing: Essential for testing the structural integrity of corrugated boxes and protective packaging materials.
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Consumer Electronics: Evaluating the drop durability of mobile devices, household appliances, and fragile components.
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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
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Advanced Digital Interface: Features a 7-inch color touch panel that automatically displays impact energy values, eliminating the need for complicated manual calculations.
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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.
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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.
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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.
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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
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Conforming Standards: ASTM E23, ISO 148, EN 10045, JIS Z2242, GB/T 229.
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Test Type: Charpy.
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Energy Capacity:
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Model QC-913A: 100J / 150J.
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Model QC-913B: 300J / 500J.
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Impact Speed: 5.0 ~ 5.5 m/sec (±10%).
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Minimum Angle Display: 0.05°.
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Selectable Units: J, J/mm, J/cm, J/mm², J/cm², kJ/m², kg-cm, ft-lb, etc.
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Data Management: Supports USB data export and optional analysis software for professional report generation.
Applications
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Metallurgical & Steel Industry: Essential for testing structural steel, alloys, and casting quality.
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Automotive & Aerospace: Validating the impact toughness of safety-critical components and structural materials.
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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
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Precision Engineering: Specifically designed for creating high-accuracy V and U notches on metal impact specimens.
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Simplified Operation: Features a streamlined process that creates the specimen notch in a single stroke, significantly improving efficiency over traditional methods.
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High-Accuracy Cutter: Equipped with precision-ground cutter edges to ensure every notch meets strict dimensional tolerances.
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Standard Compliance: Offers interchangeable cutters to comply with various international standards such as ISO 148 and ASTM E23.
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Robust & Stable Design: Built with a heavy-duty frame to ensure stability and reduce vibration during the broaching process.
Technical Specifications
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Conforming Standards: ISO 148, ASTM E23.
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Notch Types:
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V-notch: Compliant with ISO 148 (Standard Accessory).
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U-notch: Compliant with ISO 148 (Optional Accessory).
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Specimen Dimension: 10 x 10 x 55 mm.
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Included Accessory: Scrap Container for easy maintenance.
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Dimensions: 43 x 48 x 117 cm.
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Weight: Approx. 60 kg.
Applications
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Metallurgical Industry: Essential for preparing specimens for Charpy and Izod impact testing.
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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
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Mechanical Pointer Display: Features a large, high-visibility analog gauge that records the impact angle and absorbed energy, allowing for direct and intuitive reading.
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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.
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Calculation Support Software: Includes dedicated software to assist users in calculating final test results and applying energy loss corrections for improved data integrity.
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Precision-Engineered Structure: Built to ensure accurate mass center and impact velocity, minimizing mechanical friction and vibration for consistent performance.
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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
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Conforming Standards: ASTM D256, ASTM D6110, ISO 179, ISO 180, ISO 13802.
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Initial Impact Angle: 150°.
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Gauge Resolution: 1° (Angle scale).
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Best Accurate Range: 20% to 80% of full capacity.
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Target Materials: Rigid plastics, reinforced nylon, glass-fiber reinforced plastics, and other macromolecule materials.
Cometech QC-639S / QC-639T Digital Impact Tester
Key Features
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Intuitive Color Touch Screen: Full control via a digital touch panel that displays absorbed energy and impact angles immediately after each test.
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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.
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High-Resolution Digital Encoder: Replaces traditional analog pointers with a high-precision encoder for superior angular measurement and consistent repeatability.
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Friction & Windage Compensation: Integrated software automatically compensates for energy loss due to air resistance and mechanical friction, ensuring true material property readings.
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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
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Conforming Standards: ASTM D256, ASTM D6110, ISO 179, ISO 180, ISO 13802.
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Initial Release Angle: 150°.
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Display Interface: Digital Touch Screen (Outputs Energy, Impact Strength, and Angle).
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Data Connectivity: Optional PC software connection for advanced data logging and professional reporting.
Cometech QC-639P / QC-639Q Computerized Impact Tester
Key Features
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Full Computerized Analysis: Operated and managed via professional software, allowing for systematic high-volume data logging and instantaneous professional report generation.
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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.
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Dual Testing Versatility: Efficiently switch between Izod and Charpy test methods with interchangeable pendulums and specimen holders, compliant with major global standards.
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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.
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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
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Conforming Standards: ASTM D256, ASTM D6110, ISO 179, ISO 180, ISO 13802.
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Initial Release Angle: 150°.
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Control System: PC-based software integration for data acquisition and analysis.
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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
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Precision Manual Operation: Specifically designed to create standardized V-notches on plastic impact specimens through a controlled manual cutting process.
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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.
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Interchangeable Cutters: Supports various cutter geometries (angle and tip radius) to meet different international testing requirements.
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Compact & Robust Design: Constructed with high-quality materials for long-term durability while maintaining a small footprint, ideal for any laboratory bench.
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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
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Conforming Standards: ISO 179, ISO 180, ASTM D256, ASTM D6110, JIS K7110.
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Notch Depth Control: Manually adjustable via a precision micrometer or setting block.
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Cutter Material: High-Speed Steel (HSS) for superior sharpness and service life.
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Dimensions: Approx. 35 × 25 × 35 cm.
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Weight: Approx. 15-20 kg.
Applications
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Specimen Preparation: Essential for preparing plastic, nylon, and reinforced polymer specimens for Izod and Charpy impact tests.
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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
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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.
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Precise Height Graduation: Features a clear, easy-to-read vertical scale for accurate positioning of the falling weight, ensuring consistent impact energy levels.
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Interchangeable Impactors: Equipped with various impact heads and bolsters of different radii to accommodate a wide range of specimen types and coating thicknesses.
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Rugged & Simple Design: A heavy-duty, maintenance-free frame built for reliability and high-frequency use in demanding quality control environments.
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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
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Conforming Standards: JIS K5400, ASTM D2794, CNS 10756.
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Maximum Drop Height: 50 cm or 100 cm (Depending on the specific configuration).
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Impact Weights (Mass): 300g, 500g, 1000g (Additional weights available).
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Impactor Head Radii: 1/16″, 1/8″, 3/16″, 1/4″, 1/2″.
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Bolster Radii: 1/16″, 1/8″, 3/16″, 1/4″, 1/2″.
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Machine Weight: Approx. 30 – 50 kg.
Applications
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Paint & Coating Industry: Vital for testing automotive finishes, industrial anti-corrosion coatings, and decorative paints.
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Consumer Appliances: Quality assurance for the exterior coatings of household appliances and electronics.
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Material R&D: Studying the rapid deformation and fracture behavior of thin films and coating layers.
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