Portable Dynamic Hardness Testing Machines

Portable Dynamic Hardness Testing Machines ( Model : DHT-6 )

Fasne Test Equipment Pvt. Ltd.
  • Sleek & handy design, comes in a slim briefcase, for carrying the machine.
  • Dynamic Hardness Tester Mainly used to check hardness in confined spaces, on large & heavy components, permanently installed parts with low test expenditure.
  • Dynamic Hardness Tester has built in conversion facility for given material to convert D value to Vickers (HV), Rockwell (HRB, HRC), Brinell (HB), UTS scales which can be selected by pressing arrow keys.
  • The model operates on two numbers of pencil cells.
  • 30 hardness scales for different probes selectable by feather touch keys.
  • Alpha numeric display - 16 characters x 2 lines LCD with improved electronics, micro controller circuity & user friendly software. Display indicates selected material & scale combination & hardness value.
  • Five numbers of probes D, G, SH, EX & C can be given in different combinations.
  • Facility to connect dot matrix printer through centronics parallel port.
  • Upto 100 readings can be stored in memory of the machine for printing purpose.
  • Serial interface is possible with RS 232 port at an additional cost.
  • Automatic calibration facility of probe is available through keyboard.
  • Extra (Optional) Accessories such as - Standard test blocks, support rings, printer, serial interface, different types of probes are available.
Portable Dynamic Hardness Testing MachinesPortable Dynamic Hardness Testing Machines
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1. For Standard Probe (D) / Short Probe (SH) / Extended Probe (EX) Scales (as follows)


Hardness Material

Test Range and Order Code

Brinell

Vickers

Rockwell-C

Rockwell-B

Shore D

 Steel and Cast Steel unalloyed /Low alloyed

80 - 647
ST / BHN

80 - 940
ST / VPN

20 - 68
ST / HRC

38.4 - 99.5
ST / HRB

32.5 - 99.5
ST / HSD

 High Carbon, High Chromium (12% & above) Cold Work tool steel

-

80 - 898
HC / VPN

20.4 - 67.1
HC / HRC

-

-

 S.G. Iron (CI with spheroided and nodular graphite) (GG-40-80)

131 - 387 
SG / BHN

-

-

-

-

 Grey Cast Iron Grade 15-40 (GG)

93 - 334
CI / BHN

-

-

-

-

 Cast Al. Alloys non heat treated and  quenched & tempered condition

30 - 159
AL / BHN

-

-

-

-

 Copper Zinc Alloys (Brass)

40 - 173
BS / BHN

-

-

13.5 - 95.3
BS / HRB

-

 Copper Al. and Copper Tin alloy (Bronze)

60 - 290
BZ / BHN

-

-

-

-

 Wrought Copper Alloys (Low alloyed)

45 - 315
Cu / BHN

-

-

-

-

 Stainless Steel & High temp. resistant Steel.

85 - 655
SS / BHN

85 - 800
SS / VPN

19.6 - 62.4
SS / HRC

46.5 - 101.7
SS / HRB

-

2. For Heavy Probe (G) scales (as follows)


 Hardness / Material

 Brinell

 Rockwell-B

 Steel & Cast Steel / Unalloyed  and Low alloyed

 90 - 640
 ST / BHN-G

 47 - 99
 ST / HRB-G

 Grey Cast Iron  Grade 15 - 40 (GG)

 90 - 315
 CI / BHN-G

 -

 S.G. Iron (CI with spheroided  and nodular graphite) (G.G - 40, 80)

 125 - 350
 SG / BHN-G

 -


3. For Low Energy Probe (C) scales (as follows)

Hardness / Material

Brinell

Vickers

Rockwell-C

Shore-D

Steel & Cast Steel / Unalloyed
and Low alloyed

80 - 683
ST / BHN-C

80 - 996
ST / VPN-C

20 - 69.5
ST / HRC-C

31.9 - 99.6
ST / HSD-C


  • Dimensions (Approx.)

  • Probes - Standard (D) - Dia. 25 x 150 mm long.
    Short (SH) - Dia. 25 x 100 mm long.
    Extended (EX) - Dia. 25 x 150 mm long.
    Heavy (G) - Dia. 30 x 255 mm long.
    Low energy (C) - Dia. 25 x 145 mm long.
    Digital Display Unit - 188 (L) x 105 (W) x 64 (H) mm.

  • Measuring Accuracy : Average Measuring deviation 1% referred to D = 800 on Standard D Test Block at a particular test location

  • Weight (Approx)
  • Probe (Standard) - 150 gms.
    Display Unit - 325 gms.
    D scale standard test block - 3000 gms.
    Total Weight - 7 kg. of Machine (with all accessories & carry case)

  • Operating Temp. Range - 0C to 50C
  • Field of Application

Field

 For D/SH/EX Probe

 For G Probe

 For C Probe

 Prepration of the surface to be tested

 N 7  ( 66     )

 N9

 N5

 Max. roughness depth RL

 10 microns

 30 microns

 2.5 microns

 Av. roughness depth Ra = Cla = AA

 2 microns

 7 microns

 0.4 microns

 Min. weight of the test piece……….
 - of compact shape
 - on solid support
 - coupled


 5 kg.
 2.5 kg
 0.1 to 2 kg.


 15 kg.
 5-15 kg
 0.5-5 kg.


 1.5 kg.
 0.5-1.5 kg
 0.02-0.5 kg

 Min. thickness of test piece coupled

 5 mm

 15 mm

 2 mm

 Min. thickness of layer with surface  hardening

 0.8 mm

 -

 0.2 mm

 Indentation of the test tip with 300 HB  specimen……………
 Hardness -            Diameter
                             Depth


 0.6 mm
 13 micron


 -


 -

 Min. bore dia. of the specimen (only for short probe)

 100 mm

 -

 -



With standard support ring machine can work on a minimum radius of 60 mm convex or concave. For lesser job dia. suitable additional support rings can be provided. (Ref. Extra accessories).

Power Supply Conditions :
Dry cell batteries (1.5 VDC x 2 Nos.) ; Size - AA, Type - R6.

Standard Accessories
  • Probe (Normally D, if specified other ProbeCan be supplied in place of D)
  • Digital display unit
  • Standard test block calibrated in D Scale
  • Brush for cleaning probe
  • Carry case for Machine
  • Instruction manual
  • Coupling Jelly


Extra (Optional) Accessories
Standard Test Block of any hardness. Support rings for smaller radius for
  • (SR 1) Convex, Concave, Cylindrical, Spherical radius 30 to 60 mm
  • (SR 2) Convex cylindrical radius 14.5 to 30 mm
  • (SR 3) Convex cylindrical radius 10 to 15 mm
  • (SR 4) Concave cylindrical radius 16.5 to 30 mm
  • (SR 5) Concave cylindrical radius 12.5 to 17 mm
  • (SR 6) Concave cylindrical radius 11 to 13 mm