Accessory-Optional Impact Device For Leeb Hardness tester PRLH-G

impact device types

D/DC/DL

D+15

C

G

E

impact energy

11mJ

11mJ

2.7mJ

90mJ

11mJ

impact mass

5.5g/5.5g/7.2g

7.8g

3.0g

20g

5.5g

Ball hardness

1600HV

1600HV

1600HV

1600HV

5000HV

indenter diameter

3mm

3mm

3mm

5mm

3mm

indenter material

tungsten

tungsten

tungsten

tungsten

diamond

impact device diameter

20/20/6mm

20mm

20mm

30mm

20mm

impact device length

147/86/202mm

162mm

141mm

255mm

155mm

impact device quality

75/50/60g

80g

75g

250g

80g

Impact hardness

940/940/950HV

940

1000HV

650HV

1200HV

roughness of workpiece

1．6μm

1．6μm

0．4μm

6．3μm

1．6μm

Minimum weight of workpiece

direct measurement

＞5kg

＞5kg

＞1.5kg

＞15kg

＞5kg

need stable support

2-5kg

2-5kg

0.5-1.5kg

5-15kg

2-5kg

 need dense coupling

0.05-2kg

0.05-2kg

0.02-0.5kg

0.5-5kg

0.05-2kg

Minimum thickness of piece

coupling

5mm

5mm

1mm

10mm

5mm

Minimum thickness of hardened layer

0.8mm

0.8mm

0.2mm

1.2mm

0.8mm

indenter indentaion size

when 300HV hardness

indentation diameter

0.54mm

0.54mm

0.38mm

1.03mm

0.54mm

indentationdepth

24μm

24μm

12μm

53μm

24μm

when 600HV hardness

indentation diameter

0.54mm

0.54mm

0.32mm

0.90mm

0.54mm

indentation depth

17μm

17μm

8μm

41μm

17μm

when 800HV hardness

indentation diameter

0.35mm

0.35mm

0.35mm

-

0.35mm

impression depth

10μm

10μm

7μm

-

10μm

scope of application

D type measuring general parts；DC type test endoporusand interior surface of narrow space；D type test slender narrow bottom

D+15 type test grooved or recessed surface

C type test surface of hardened layer small or light  piece 

G type test large or heavy workpieces and rough castings and forgings

E type test hardness workpieces