Semi-Automatic Charpy Impact Testing Machine: Reliable Impact Resistance Testing with Mikrosize
In materials science and quality assurance, evaluating the dynamic fracture behavior of metals under impact loading is essential for ensuring structural integrity. The Semi-automatic Charpy Impact Testing Machine from Mikrosize—offered in models ITM-SA300 and ITM-SA500—delivers precise, repeatable impact resistance testing for a wide range of metallic materials. Designed as a robust metal pendulum impact testing machine, this equipment combines semi-automatic control with proven mechanical reliability, making it an ideal solution for metallurgical laboratories, mechanical manufacturing facilities, and research institutions.
Rugged Construction and Thoughtful Safety Design
The main frame adopts a single supporting column structure with a cantilever-type pendulum hanging method, ensuring stable pendulum motion with minimal friction. The impact knife is installed and fixed with screws, allowing easy replacement when worn or when different striking geometries are required. Specimens are supported in a simply supported beam configuration, conforming to standard Charpy test practices.
Safety is paramount in impact testing. The equipment incorporates a safety pin that prevents the pendulum from accidentally falling during setup, and a wire protective net surrounds the test area to contain any fragments or foreign objects that may splash during specimen fracture. The wired remote control box enables operators to control pendulum lifting, cocking, releasing, and return from a safe distance, further enhancing personnel protection. An emergency stop button is also provided on the remote box for immediate intervention.
Semi-Automatic Operation for Efficient Testing
The Semi-automatic Charpy Impact Testing Machine streamlines the testing workflow. Except for manual specimen placement, all actions—pendulum lifting, pendulum hanging, impacting, and pendulum releasing—are electrically controlled. After the specimen breaks, the remaining pendulum energy is utilised to automatically lift the pendulum back to the ready position, preparing for the next test cycle. This feature is particularly advantageous for continuous impact experiments in production-line quality control, where high throughput and consistency are required.
The pendulum adopts a detachable design, enabling quick interchange of pendulums with different impact energies. This expandability allows users to configure the machine for various test requirements without investing in multiple dedicated units. The C-type pendulum geometry reduces frictional energy loss caused by air resistance, contributing to more accurate energy readings. A specimen centering device is included to ensure that each sample is placed precisely at the standard test position, eliminating measurement errors caused by sample deviation.
Precision Measurement and Data Readability
Impact energy is read directly from a dial pointer with a resolution of 0.5 J, providing clear and immediate results. The effective use range covers 10% to 90% of full scale, ensuring that measurements fall within the most accurate portion of the scale. For low-temperature impact testing, the machine can be optionally equipped with a low-temperature tank, expanding its application to materials that must perform under extreme environmental conditions.
Technical Specifications at a Glance
The ITM-SA300 model offers maximum impact energies of 150 J and 300 J, while the ITM-SA500 provides 250 J and 500 J capabilities. Both models feature a pendulum pre-lifting angle of 150°. The distance from pendulum axis to striking center is 750 mm for the SA300 and 800 mm for the SA500, with corresponding impact speeds of 5.2 m/s and 5.4 m/s. The anvil span is 40 mm, and the radius of anvil fillet is R1-1.5 mm. Standard specimen sizes include 10×10×55 mm, 10×7.5×55 mm, 10×5×55 mm, and 10×2.5×55 mm. The overall frame dimension with protective net is 2200×650×1900 mm (L×W×H), and the power supply requirement is 3-phase 380 V±10%, 50-60 Hz, 2 kW. Net weights are 500 kg (SA300) and 650 kg (SA500). Operating temperature ranges from 0 to +38 °C, with humidity 10% to 90% non-condensing.
Wide Application Scope
This metal pendulum impact testing machine is extensively used for impact resistance testing of metal materials in raw material verification, process control, and final product inspection. In mechanical manufacturing, it evaluates core components such as gears and shafts under impact loads. The construction and infrastructure industry relies on it for structural material impact resistance, while aerospace and military sectors employ it for testing critical components that must withstand extreme dynamic forces.
Standards Compliance and Accessories
The machine complies with international standards including ISO 14556, ASTM E23, ISO 148, GB/T 3808-2002, GB/T 229-1994, JIS Z2242, and EN 10045. Standard delivery includes the host frame, two pendulums (150 J and 300 J for SA300, or 250 J and 500 J for SA500), a dial, manual control box, safety screening, safety mechanism, motor, fastening wrench, anchor bolts, instruction manual, and certification documents. Optional accessories include additional pendulums (450 J, 750 J), impact knives of different sizes (2 mm, 8 mm), a notch projector, low-temperature tank, hydraulic broaching machine for impact sample notches, and standard impact samples.
