Vickers LD 3000 AF “EHT Spezial” 

LD 3000 AF “EHT Spezial”

Automatic hardness tester for Rockwell, Brinell, Vickers and CHD test methods in compliance with ASTM and ISO hardness standards. The LD 3000 AF is built for measuring the thickness of the superficial hardness and will determine (CHD) Case Hardness Depth from 0.12 mm to 2 mm, with no need to destroy the specimen or to separate material types before performing the test. With just one measurement it reduces hardness testing time and costs compared to traditional polished cross section of Vickers and knoop methods. Load forces are applied through load cells and electronically controlled in Closed Loop (Pat. Affri). This hardness tester is entirely motorized and it is equipped with a wide touchscreen for ease in test planning and a clear view of results. Statistics and CHD charts are automatically generated and can be stored with the test session in the large archive. User friendly interface with conversion tables and round correction values for tests on covex cylindrical surfaces or various diameters. For hardness case depth test with non-destructive method on all metals: Iron, steel, tempered steel, cast iron, brass, aluminum, copper and metal alloys. Heat treatment, hardening, nitriding, cementation and hardfacing.

KEY-FACTS

  • Test loads: from 10 to 3000 kgf (From 29,4 to 29403 N)
  • CHD: 525 - 550 - 600 - 650 (More on request)
  • Vickers ISO 6507 / ASTM E-384 (Only indentation): HV3 - HV5 - HV10 - HV20 - HV30 - HV50 - HV100
  • Brinell HBWT ISO 6506 / ASTM E-10: HBWT2.5/62.5 - HBWT2.5/187.5 - HBWT5/125 - HBWT5/250 - HBWT5/750 - HBWT10/500 - HBWT10/1000 - HBWT10/1500 - HBWT10/3000 - HBW1/10 - HBW1/30 - HBW2.5/62.5 - HBW2.5/187.5 - HBW5/25 - HRW5/62,5 - HBW5/125 - HBW5/250 - HBW5/750 - HBW10/100 - HBW10/250 - HBW10/500 - HBW10/1000 - HBW10/1500 - HBW10/3000
  • Rockwell ISO 6508 / ASTM E-18: HRA - HRB - HRC - HRD - HRE - HRF - HRG - HRH - HRK - HRN - HRT

Technical Features

LD 3000 AF
Standards EN-ISO 6508 / EN-ISO 14577 / ASTM E-18 / ASTM E-384
Indenter and clamping-hood stroke
30 mm
Elevating screw stroke
150 mm
Depth capacity
190 mm
Test loads Vickers: 98.07 – 147.1 – 294.2 – 490.35 – 980.7 N (10 – 15 – 30 – 50 – 100 kgf)

Brinell: 98.07 – 153.2 – 294.2 – 306.5 – 612.9 – 1839 – 2450 – 4900 – 7350 – 9807 N (29403 N on request)
(10 – 15.6 – 30 – 31.2 – 62.5 – 187.5 – 250 – 500 – 750 – 1000 kgf) (3000 kgf on request)

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

Superficial Rockwell: 147.1 – 294.2 – 441.3 N (15 – 30 – 45 kgf)
Feasible tests
HDTL con curva CHD: 525 – 550 – 600 – 650 (More on request)
Vickers: HV10 – HV15 – HV30 – HV50 – HV100
Brinell HBWT: HB30 – HB10 – HB5 – HB2.5 MPa (F/D2)
Rockwell: HRA – HRB – HRC – HRD – HRE – HRF – HRG – HRH – HRK
Superficial Rockwell: HRN – HRT
Accuracy Better than 0.5 %

HDTL METHOD

Definition of the superficial hardness and its effective depth (CHD) from 0.12 a 2 mm. LD 3000 AF will determine the Case Hardness Depth (CHD) with great precision and minimal operator intervention, on finished products, without destroying the specimen and testing rather than random sampling of manufactured products. There’s no need for sample preparation, no need to separate material types or to polish the cross section as in the Vickers method. In just one minute the tester generates the report with the CHD graph.

CLOSED LOOP (PAT. AFFRI)

The force by load cell and the closed loop AFFRI system assures absolute accuracy on all test conditions. Closed Loop load cells manage load forces, which are automatically programmed and controlled at each test assuring perfect linearity in every range eliminating the problems associated with dead weight systems on traditional testers. Results are not affected by any structural deflection, misalignment or vibration. The system can also operate in an inclined position.

EASY AND FAST AUTOMATIC MEASUREMENTS

Spin the leveling screw handle until the sample makes contact with the clamping hood blocking the piece. Press the START button and the measuring head will approach the specimen, apply the load to perform the indentation and goes back upward; all in automatic succession without breaching a phase. When testing unstable samples or deflective parts, the AFFRI System will follow the sample and not lose contact, compensating any frame deflection during the test cycle. Accurate results are assured even with oiled, dusty or dirty pieces.

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