About Dorry Abrasion Testing Machine
Specification:
It consists of a disc rotating about a shaft connected to a reduction gear box coupled to a motor. The disc rotates at 28-30 RPM.
Under the rotating disc is a tray with an outlet to facilitate the removal of sand. Two Conical Hoppers are mounted on a bracket fixed to the circular tray. An arrangement is made for start and stop the flow of sand. Two containers with weights are supplied to keep the specimens pressed against the rotating disc.
Suitable for operation on 220 V, 50 cycles, A.C. Supply
Heavy-Duty, Accurate Aggregate TestingEngineered for high-performance abrasion resistance evaluation, this Dorry Abrasion Testing Machine is crafted with a stable base and corrosion-resistant finish, ensuring reliability in rigorous laboratory environments. Its robust construction and manual interface enable precise control and consistent test results for aggregates, vital for quality assurance in construction projects.
Advanced Features for Consistent ResultsEquipped with a geared motor, chrome-plated sample holders, and high-grade cast iron wheels, this machine offers a smooth and controlled testing process. It delivers accurate results (within 1 gm), thanks to instant analog readouts and a manageable resolution, making it suitable for demanding aggregate testing applications across India's supply network.
FAQ's of Dorry Abrasion Testing Machine:
Q: How does the Dorry Abrasion Testing Machine evaluate aggregate abrasion resistance?
A: The Dorry Abrasion Testing Machine determines abrasion resistance by rotating aggregate specimens in contact with abrasive charges on high-grade cast iron wheels. The controlled rotation, powered by a geared motor, enables accurate measurement of material lost (up to 500 gm) after a set number of cycles, helping to assess aggregate durability.
Q: What are the standard procedures for operating the machine?
A: Begin by securing two sample specimens into the chrome-plated mild steel holders. Adjust the weights and abrasive charges as required, set the manual controls for rotation speed (20-30 rpm), and run up to four test cycles per session. Weight loss is measured to gauge abrasion resistance, following aggregate testing standards.
Q: When should I use the Dorry Abrasion Testing Machine?
A: Use this machine whenever determining the durability and quality of aggregates for construction projects is necessary. It is commonly applied in quality control laboratories, aggregate processing plants, and research institutions to ensure compliance with safety and performance standards.
Q: Where can this equipment be installed for optimal performance?
A: The Dorry Abrasion Testing Machine is designed for bench-mounted installation in standard laboratory environments under ambient temperature and humidity. Ensure stable, vibration-free placement near a 230V AC, 50 Hz power supply for accurate and consistent results.
Q: What benefits does this machine provide for aggregate testing?
A: This equipment ensures highly reliable aggregate quality assessment, featuring robust and corrosion-resistant construction, easy manual operation, and instant analog displays. Its high measurement accuracy (1 gm) and heavy-duty design reduce maintenance while providing clear, repeatable results.
Q: How many specimens can be tested at once, and what are the specimen size requirements?
A: Up to two aggregate specimens can be tested simultaneously. Each sample should have a diameter and height between 25-50 mm, aligning with standard aggregate abrasion test methodologies.