DWTT Drop Hammer Impact Testing Machine

1. Instroduction

The testing machine is mainly used for drop weight tear test of pipeline and in thick steel ferritic steel, namely DWTT test. The test machine intergrating mechanical, electrical, automatic control technology to one, and to achieve fully automated process of feeding, lifting hammer, impact, fracture specimen collection, grab the hammer. In addition, this test machine has multi-channel protection measures, greatly improve the safety of operating personnel and equipment use. It is commonly used test equipment by the pipeline manufacturer, large steel mills, Iron and Steel Institute and other enterprises and research institutes.

2. Test standard
GB/T 8363-2007 "ferritic steel drop weight tear test method"
ASTM E436-03 "Standard Test Method for Drop-Weight Tear Tests of Ferritic Steels"
API RP*5L3-96 "Conducting Drop-Weight Tear Tests on Line Pipe"

3. Technical parameter

MODEL	DWTT- 20000	DWTT- 30000	DWTT- 50000	DWTT- 800000	DWTT- 1000000
Maximum Energy(J)	20000	30000	50000	80000	100000
Minimum Energy(J)	8000	8000	20000	20000	20000
Tup Mass(kg)	630	630	1600	1620	1620
Tup Mass Accuracy	±1%
Weight mass	120	390	360	780	1380
Weight mass accuracy	±0.5%
Total weight of tup	750	1020	1960	2400	3000
Drop Height(mm)	1275～2800	1275～3000	1275～2610	1275～3400	1275～3400
Velocity Of Drop(m/s)	5～7.67	5～7.67	5～7.14	5～8.16	5～8.16
Height Accuracy(mm)	≤±10
Hardness Of Tup Nose	HRC58-62
Radius Of Tup Nose	R25±0.1mm
Hardness Of Tup Nose	HRC58-62
Radius Of Tup Nose	R25.4±2.5mm
Sample Centered Error	±1mm
Specimen Dimension	(300±5)*(75±1.5)*(3-50)mm;(305±19)*(76.2±3)*(3-50)mm P-3:(130±1)×(50±1)×(16±0.5)