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2.2 D type impact device 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.3 Type of Impact Devices 

 

 

 

 

 

2.4 Impact Devices Specification: 

Special Impact 
Device 

D/DC/DL  D+15 

Impact Energy 

11mJ 

11mJ 

11mJ 

11mJ 

11mJ 

Mass of Impact Body 

5.5g/7.2g  7.8g 

3.0g 

20.0g 

5.5g 

Test Tip Hardness 

1600HV 

1600HV 

1600HV 

1600HV 

5000HV 

Test Tip Diameter 

3mm 

3mm 

3mm 

5mm 

3mm 

Test Tip Material 

Tungsten 
carbide 

Tungsten 
carbide 

Tungsten 
carbide 

Tungsten 
carbide 

Tungsten 
carbide 

Impact Device Diameter  20mm 

20mm 

20mm 

30mm 

20mm 

Impact Device Length 

86/147/75mm 162mm 

141mm 

254mm 

155mm 

Impact Device Weight 

50g 

80g 

75g 

250g 

80g 

Max. Hardness of Sample  940HV 

940HV 

1000HV 

650HV 

1200HV 

Average surface roughness 
Ra: 

1.6μm 

1.6μm 

0.4μm 

6.3μm 

1.6μm 

Min. Weight of Sample: 
Of compact shape 
On solid support 
Coupled on plate 

>5kg 
2~5kg 
0.05~2kg 

>5kg 
2~5kg 
0.05~2kg

 

>1.5kg 
0.5~1.5k

0.02~0.5
kg

 

>15kg 
5~15kg 
0.5~5kg

 

>5kg 
2~5kg 
0.05~2kg

 

Min. thickness of sample: 5mm 

5mm 

1mm 

10mm 

5mm 

3                                                                                                                                                        4 

Summary of Contents for LM-100

Page 1: ...nts 8 4 1 2 Weight and Thickness Requirements 8 4 1 3 Surface Hardened Layer 8 4 1 4 Curved surface Requirement 8 4 2 Support of Test piece 9 5 Operation 9 5 1 Display 9 5 2 Keyboard 10 5 3 Turn on th...

Page 2: ...l voltage with the impact velocity The Leeb hardness values are calculated by the following formula HL 1000 Vb Va In Which HL Leeb hardness values Vb the voltage produced during the rebound of impact...

Page 3: ...n carbide Tungsten carbide Tungsten carbide Tungsten carbide Impact Device Diameter 20mm 20mm 20mm 30mm 20mm Impact Device Length 86 147 75mm 162mm 141mm 254mm 155mm Impact Device Weight 50g 80g 75g 2...

Page 4: ...uitcase 2 6 Optional accessories Impact device DC C DL D 15 G Standard Calibration Test Block Blue tooth module Thermal Printer Standard supporting ring Small Supporting ring Special supporting rings...

Page 5: ...s Mould cavity Heavy workpieces Failure analysis of pressure vessel turbine and other equipments Small test area The production line of Bearings and other parts Distinguish the material of the metal m...

Page 6: ...f a large weight and thickness may still cause deformation so reinforcement and support in the rear surface of the test point is necessary 5 Operation 5 1 Display 5 2 Keyboard 5 3 Turn on the instrume...

Page 7: ...irmly on the surface of the sample the impact direction should be vertical to the testing surface Press the release button on the upside of the impact device to test The sample and the impact device a...

Page 8: ...the Thermal Printer then the groups testing data will be printed 5 9 Calibration Error correction settings Measuring error can be usually caused by test tip abrasion or changing another impact device...

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