FINE GROUP'S




-

 

FASNE TEST EQUIPMENT PVT. LTD.
 
PORTABLE DYNAMIC HARDNESS TESTING MACHINES
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PORTABLE DYNAMIC HARDNESS TESTING MACHINES  ( Model : DHT-6 )

Sleek & handy design, comes in a slim briefcase, for carrying the machine.
Mainly used to check hardness in confined spaces, on large & heavy components, permanently installed parts with low test expenditure.
The machine 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. 
 
 

DETAILED  SPECIFICATIONS OF DYNAMIC HARDNESS TESTER -

MEASUREING RANGES –

 
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
0°C to 50°C

 
 

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


- 1 No.
- 1 No.
- 1 No.
- 1 No.
- 1 No.
- 1 No.
- 50 gms.
 

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.

 
Serial Interface (Windows 98 Based).
80 Col. Dot Matrix Printer.
Different types of Probes –
• Standard (D)
• Short (SH)
• Extended (EX)
• Heavy (G)
• Low Energy (C)
 
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