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4.2 Support of Test piece 

 

The heavy workpiece do not need support 

 

The  Mid-heavy  workpiece  must  be  placed  on  a  flat,  sturdy  surface,  and 

absolutely smooth placement, without any shaking. 

 

Light workpiece must be tightly coupled with the solid support body, the 

coupling  surface  must  be  smooth,  and  Coupled dosages  don’t  too  much, 

Test direction must be perpendicular to the coupling surface. 

 

When  the  workpiece  is  a  large  area  of  Sheet,  Pole  and  Bending  Parts, 

Even  if  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 instrument 

Press          to power on the LM100, the screen will display the default interface 

for  the  first  time,  then  power  on  again  will  display  the  last  parameters 

automatically, 

5.4 Parameters Setting 

5.4.1 Material 

Press “MTL” button to choose the material, code no. from 0-8: 

Code

 

Hardness

 

Tensile strength

 

Steel and Cast Steel

 

C

 

GC. IRON

 

CrNi

 

NC. IRON

 

CrMo

 

C. ALUM 

 

CrV

 

BRASS

 

CrMnSi

 

BRONZE 

 

SSST

 

COPPER 

 

SST

 

SST 

 

CrNiMo

 

Forging Steel 

Cr

 

Alloy tool steel 

 

9                                                                                                                                                        10 

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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