DAKOMASTER 300
Fully automatic hardness testing machine with test loads from 1 to 250 kgf. Rockwell, Superficial Rockwell and Brinell HBWT. Touchscreen PC and high level software.
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Rockwell Hardness Testers
ROCKWELL HARDNESS MEASUREMENTS ON ALL METALS, ALLOYS AND CARBON
Here you will find Affri Rockwell hardness testers products divided by the level of automation. From simple to fully automatic and motorized hardness testers with a wide range of testing loads and entirely conform to ASTM E-18 and ISO 6508 standards. Filter by category and click on the product to see its features.
DRM / EX / RT
Semi-automatic very simple hardness testing machines with test loads from 3 to 250 kgf. Rockwell, Superficial Rockwell and Brinell HBWT. Suitable for small samples.
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WANT TO KNOW MORE ABOUT THE ROCKWELL HARDNESS TEST METHOD? CLICK HERE!
Fully automatic without motor!
Rockwell – Superficial Rockwell – Brinell HBWT.
Test loads from 3 to 187,5 kgf (29,45 to 1839 N).
Extremely accurate system with automatic preloading, loading and measurements. The best hardness tester for heat treatments with massive testing and various operators.
Fully automatic hardness tester.
Rockwell – Superficial Rockwell – Brinell HBWT.
Test loads from 1 to 250 kgf (9,807 to 2452 N).
MRS are fully automatic hardness testers with testing forces controlled electronically in Closed Loop. Fully conform to NADCAP, ASTM and ISO standards.
Fully automatic SMART hardness tester.
Rockwell – Superficial Rockwell – Brinell HBWT.
Test loads from 1 to 250 kgf (9,807 to 2452 N).
DAKOMASTER is a fully automatic hardness tester with small head and touchscreen. Closed Loop technology inside to be fully conform to NADCAP, ASTM and ISO standards.
High speed automatic hardness tester.
Rockwell – Superficial Rockwell – Brinell HBWT.
Test loads from 3 to 187,5 kgf (29,45 to 1839 N).
PRS is a pneumatic hardness tester with no limits! The measuring head is independent, you can place it anywhere inside the production line!
Hardness testing on gear teeth, rings and shafts
Rockwell – Superficial Rockwell – Brinell HBWT.
Test loads from 1 to 250 kgf (9,807 to 2452 N).
Automatic hardness machine on a custom made table with two sliding rails where specific supports for gears can be easily moved under the testing position. Laser pointing system to aim at the gear teeth and a long indenter with protection to test at deep points.
Hardness testing on crankshafts and camshafts
Rockwell – Superficial Rockwell – Brinell HBWT
Test loads from 1 to 250 kgf (9,807 to 2452 N)
Movements on 3 independent axis and piece rotation of 360° to allow easy location of testing points. MATRIX assistive technology offer a step-by-step sequence of dialog boxes that lead the operator through a series of well-defined testing steps.
Hardness testing on pipes and tubes
Rockwell – Superficial Rockwell – Brinell HBWT
Test loads from 1 to 250 kgf (9,807 to 2452 N)
Automatic Rockwell hardness tester suitable for testing seamless and welded steel tubes. This system is manufactured on a customized table with a X motorized stage for automatic multi-test Rockwell cycle.
THE ROCKWELL HARDNESS TEST
What is the Rockwell hardness test and how does it work?
The procedure for testing the Rockwell hardness of a material is quite simple. The most used Rockwell hardness scales are Rockwell C and A (HRC – HRA) based on the principle of using a diamond cone indenter and the Rockwell B (HRB) using a tungsten ball as a hardness indenter.
When testing thin components or hardfacing coating layers such as chromium the Rockwell method used is called Superficial Rockwell which involves minor testing loads, the scale can be HRN using a diamond indenter and HRT using a ball indenter.
SCOPE
The Rockwell hardness test is an empirical indentation hardness test that can provide useful information about metallic materials. This information may correlate to tensile strength, wear resistance, ductility, and other physical characteristics of metallic materials, and may be useful in quality control and selection of materials.
PRINCIPLES
An indentation hardness test using a verified machine to force a diamond spheroconical indenter or tungsten carbide (or steel) ball indenter, under specified conditions, into the surface of the material under test, and to measure the difference in depth of the indentation as the force on the indenter is increased from a specified preliminary test force to a specified total test force and then returned to the preliminary test force. By the way, the test is divided into three steps of force application and removal:
Step 1 – Indenter is brought into contact with the test specimen, and the preliminary test force is applied. After holding the preliminary test force for a specified dwell time, the baseline depth of indentation is measured.
Step 2 – Force on the indenter is increased at a controlled rate by the additional test force to achieve the total test force. The total test force is held for a specified dwell time.
Step 3 – The additional test force is removed, returning to the preliminary test force. After holding the preliminary test force for a specified dwell time, the final depth of indentation is measured. The Rockwell hardness value is derived from the difference in the final and baseline indentation depths while under the preliminary test force. The preliminary test force is removed and the indenter is removed from the test specimen.
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