VRS Series
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Universal hardness tester MRS 1

SERIE VRS

Universal hardness tester for micro/macro Vickers, Knoop, Rockwell, Superficial Rockwell, Brinell and Shore test methods, in compliance with ASTM and ISO hardness standards. VRS Series are top level bench hardness testers for tough or lab applications. Fully motorized for fully automatic test cycles, with Vickers and Knoop indentation autoreading through a CCD high resolution camera and the relative software. Absolute accuracy (better than 0.5 %) in every condition. Load forces are applied through load cells and electronically controlled in Closed Loop (Pat. Affri). Exact hardness result on the first test and R&R data are at the top of its class. Digital durometers with LCD screen, user friendly interface, real time statistics and graphs and large archive storage. Hardness tests on all metals: Iron, steel, tempered steel, cast iron, brass, aluminum, copper and metal alloys. Heat treatment, hardening, nitriding, cementation and hardfacing. Hard and soft plastics. Knoop test on ceramic and glass materials.
Universal hardness tester MRS   Universal hardness tester MRS   Hardness tests on irregular gears   Automatic Vickers and Knoop indentations reading through camera   Hardness tests on uneasy points   Hardness tests inside hollow pieces   Correct hardness results even in bad situations
 
 

Test loads: from 0.3 to 250 kgf (From 2.940 to 2452 N)

Vickers ISO 6507 / ASTM E-384 - Knoop ISO 4545: HV0,3 - HV0,5 - HV1 - HV2 - HV2,5 - HV3 - HV5 - HV10 - HV15 - HV20 - HV30 - HV50 - HV100  /  HK0,3 - HK0,5 - HK1

Rockwell ISO 6508 / ASTM E-18: HRA - HRB - HRC - HRD - HRF - HRG - HRL - HRM - HRR / HRN - HRT

Brinell ISO 6506 / ASTM E-10: HB 30 - HB 10 - HB 5 - HB 2,5 MPa (F/D2)

 

One button measurements

Universal hardness tester MRS START cycleJust press one button and the hardness tester's head moves down to make contact with the sample's surface, clamps the piece, applies the force, makes the indentation and goes back upwards. Within seconds results appear. For Vickers and Knoop indentations, just place the camera in reading position and the indent is automatically measured.

Indenter and clamping hood stroke

Universal hardness tester indenter strokeWhen testing unstable samples or deflective parts, the AFFRI System will follow the sample without loosing contact thank's to its 50 mm stroke for indenter and clamping hood. Easy and fast hardness measurements on pieces with different thicknesses without acting on tester head or elevating screw.
 

Closed Loop (Pat. Affri)

Hardness tester Closed LoopLoad forces are applied through load cells and controlled in "Closed Loop" with a frequency of 1 khz, assuring perfect linearity in every range. Results are not affected by any structural deflection, misalignment, vibration or problems associated with dead weight systems on traditional testers.

Repeatability and reproducibility

Universal hardness tester accurate resultsAccurate measurements on the first test, even in extreme conditions, eliminate the need for repeated tests. The R&R data is at the top of its class.
 

Auto indent reading

Universal hardness tester indent readingThanks to the CCD high definition camera and to the AFFRI software, the indent reading process is automatic and assures absolute accuracy even if the samples surface isn't perfect. From perfectly polished to rough and etched samples, the indentation auto-detection allows measurements on a variety of sample surfaces.

Clamping system (Pat. AFFRI)

Universal hardness tester clamping systemSecure contact with the specimen is always mantained, even in the unlikely event of any specimen movement during the operation cycle. The clamping system assures perfect stability of any test piece throughout the test cycle, even if it's oiled, rusty or dirty.
 

X/Y table

Universal hardness tester XY tableSliding table 100x100 mm with 25 x 25 mm X/Y stroke and 10 μm step, for an easy and accurate positioning of the sample.

Software

Universal hardness tester SoftwareAFFRI analyse system with fast and easy scales selection and test settings. Results and live statistics. Storage of data and test sessions.
 
 

TECHNICAL FEATURES

 

Universal hardness tester 250 MRS Universal hardness tester 3332/3302 MRSA
 
251 VRSTV/VRSD/VRSA
270 VRSTV/VRSD/VRSA
770 VRSTV/VRSD/VRSA
Standards
EN-ISO 6506-2 / EN-ISO 6507-2 / EN-ISO 6508-2 / EN-ISO 2039 / EN-ISO 868 / ASTM E-18 / ASTM E-10 / ASTM E-2240 / ASTM E-348
XY table
----
330x390 mm
Indenter and clamping hood stroke
0/50 mm motorized
Vertical head stroke
----
0/380 mm motorized
0/700 mm motorized (Higher on request)
Elevating screw stroke
0/215 mm
----
Depth capacity
190 mm
Reading
VRSTV: Automatic and semi-automatic through CCD camera and software (Computer as optional)
VRSD: Semi-automatic with encoder
VRSA: Semi-automatic with drum scale
Preload
29.4 - 98.1 N (3 - 10 kgf)
Test loads

VRSTV/VRSD/VRSA

Vickers - Knoop: 9.807 - 19.60 - 29.42 - 49.03 - 98.07 - 147.1 - 196 - 294.2 - 490.35 - 980.7 N (1 - 2 - 3 - 5 - 10 - 15 - 20 - 30 - 50 - 100 kgf)

Rockwell: 588.4 - 980.7 - 1471 N (60 - 100 - 150 kgf)

Superficial Rockwell: 29.42 - 147.1 - 294.2 - 441.3 N (3 - 15 - 30 - 45 kgf)

Brinell: 61.29 - 98.07 - 153.2 - 245.2 - 294.2 - 306.5 - 612.9 - 1226 - 1839 N (On request 2452 N)
(6.25 - 10 - 15.6 - 25 - 30 - 31.2 - 62.5 - 125 - 187.5 kgf - On request 250 kgf)

Optional loads: 49 - 132 - 358 - 961 N (For plastics and rubbers as per EN-ISO 2039 std)


VRSTV-VM/VRSD-VM/VRSA-VM (Micro macro Vickers)

Superficial Rockwell: 29.42 - 147.1 - 294.2 - 441.3 N (3 - 15 - 30 - 45 kgf)

Vickers - Knoop: 2.940 - 4.903 - 9.807 - 19.60 - 24.52 - 29.42 - 49.03 - 98.07 - 147.1 - 196 - 294.2 - 490.35 N
(0.3 - 0.5 - 1 - 2 - 2.5 - 3 - 5 - 10 - 15 - 20 - 30 - 50 kgf)

Feasible tests
Rockwell: HRC - HRA - HRD - HRB - HRF - HRG - HRL - HRM - HRR
Superficial Rockwell: HRN - HRT
Brinell: HB30 - HB10 - HB5 - HB2.5 MPa (F/D2)
Vickers - Knoop
Shore A - D
Accuracy
Better than 0.5 %

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