50000j Drop Weight Impact Testing Machine (DWTT Test)

Model: DIT204C, DIT304C, DIT404C, DIT504C
Maximum impact energy: 20000J, 30000J, 40000J, 50000J
Functions: This type of machine is specially for drop-weight tear tests (DWTT) of ferritic steels
Standards: GB/T 8363-2007, ASTM E436-03, API RP*5L3-96
Features
SIMENS PLC controls and touch screen provide high reliability and versatility.
Automatic specimen feeding and automatic positing
Frame structure is made of solid steel plate with high stability under impact
Striker is made of high strength steel plate with high impact resistance
Use chain to lift striker with high precision in height
Self-lock design for striker clamping
Full-closed safety shield
Special design tools for support change
Description
Main frame
The bottom plate is made of solid steel plate, mass is up to 2100kg. Anvil is located onto the center of the bottom plate. Impact force onto the frame will rapidly transmit to the ground. As the impact force applies to the center of the main frame which is at the center of the foundation, foundation area is not so big (3mx3m), after long use, foundation will not decline by vibration, and horizontal level of the main frame will not change too.
The main frame is supported by four columns. Each column is divided by upper and lower part. The lower part of the columns is cone-shape cast iron; The upper part is high strength steel pipe. Cone-shape of lower part has higher anti-decline ability than cylinder-shape. Cast iron has stronger vibration resistance and isolation, the vibration caused by impact force will not transmit to the top plate, therefore, the main frame has not apparent vibration for each impact test.
Striker
Striker consists of a few parts, which are made of separately machined steel plate. It features high impact resistance ability. Junction between each part is fixed by pin, jointed by high strength screw bolt. Tup is made of alloy steel with good impact resistance, little abrasion, long service life, and simple to change. The weights are separate, easy to change. Connection between weights is alignment pin with reliability.
Striker lifting system
Imported servo motor is used for the lifting system, with small size, light weight, high efficiency, low noise, and high stability. Compared with common motor, servo motor is better in accuracy, response characteristic, over-load resistance, speed change performance, and torque characteristic. Use chain to lift striker with smaller elasticity and higher accuracy than wire rope. Chain has higher strength, higher abrasion resistance and safer than wire rope. The lifting motor is located at the bottom of the frame, easy to mount and maintain.
Striker release/clamp device
It is specially design and will automatically lock after clamping the striker. This device won't open caused by gravity even when the power is off. It is equipped with approach switch to detect the position. If striker is not clamped, crosshead won't move. It uses AC electromagnet for release of striker, no need of air supply, easy to mount and operate.
Specimen feeding device
Use motor to feed specimen within 5 seconds, fast, reliable and easy to operate. The frame is one body machined, without welding, with high strength. The frame tightly fits to the support, reducing the force on motor and extending the life of motor.