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Rockwell Hardness Tester
Principle
Rockwell & Rockwell Superficial tests consists of forcing an indentor (Diamond or Ball) into the surface of a test piece in two stages i.e. first with preliminary test force and thereafter with additional test force and then measuring the depth of indentation after removal of additional test force (Remaining preliminary test force active) for measurement of Hardness Valve.
Brinell test consist of forcing a hardnered ball into surface of test piece with a specified test-force and measuring the diameter of indentation for evaluation of Brinell Hardness number.
Operation:
For Rockwell & Rockwell Superficial Test:
In case of 'RASN' series machines for Rockwell or Rockwell Superficial tests, a preliminary test force is first applied without removing zero. Quickly thereafter an additional test force is applied without removing the preliminary test force. When the penetration is stabilized, the additional test force is removed and the hardness number is shown directly on the indicator.
For Brinell Test:
The operation is exactly same as above. However, the diameter of impression is measured out side of machine by Brinell microscope. Brinell hardness number is found out by refering corresponding hardness tables showing hardness number against dia. of indentation for specified ball diameter and test force.
Model RASN
- Suitable for Rockwell Tests.
- Manually operated.
- Preliminary Test Force - 98.07 N (10 kgf)
- Additional Test Force - 490.3, 882.6, 1373 N (50,90, 140 kgf)
- Total Test Force - 588.4, 980.7, 1471N (60, 100, 150 kgf)
- Test Force Selection by external dialing.
- Auto zero setting dial gauge.
Rockwell cum Brinell Tester, Model RASN (B)
- Same as RASN above. In additional,
- Additional test force - 1471, 2354 N, (177.5.240 kgf)
- Total test force - 1839.2452 N (187.5.250 kgf)
'Adinath' new 'RASN' series of Hardness Testing Machines come with much improved design and look with following major design changes. 1) The machine body is having a taper front look and a big size dial gauge in the front. The machine is powder coated for far better look. The paint shade do not fade and machine look likes new over year. 2) The elevating screw of machine is guided in a hardened and ground bush, not allowing movement of elevating screw more than 0.05mm when raised to full height. The accuracy is retained for years together due to haerdened bush. 3) A hardened and ground stepped bush is fixed on top of main screw for location and test surface. This guarantees no change in results due to rough handling of test table or test piece. It means trouble free long life machine accuracy. 4) An antifrication linear bearing with almost no clearance is provided for a perfect vertical movement of loading plunger with minimum friction. This enables testing of small dia. pin or ball upto 3 mm dia. 5) All machine modes are provided with automatic zero setting dial gauge or digital readout. Hence zero setting at every test is avoided 6) All four models confirm to respective standard as under: IS: 3804, BS 10109-2&ASTME-18 for Rockwell Test. IS: 5073, BS 10189-2&ASTME-18 for Rockwell Superficial Test. IS: 2281, BS 10003-2&ASTME-10 for Brinell Test. Standard Accessories For Machine
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Model
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AI-RASN
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AI-RASN(B)
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AI-RASN(T)
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AI-RASN(M)
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Testing Table 50mm dia.
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1 Pc
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1 Pc
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1Pc
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1 Pc
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Testing Table 38mm dia with 'V'groove for round jobs 6 - 45mm dia.
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1 Pc
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1 Pc
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1 Pc
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1 pc
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Diamond Indentor Rockwell
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1Pc
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1 Pc
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1 Pc
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1 Pc
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Steel Ball Indentor 1/16" with 5 spare balls
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1 Pc
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1 Pc
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1 Pc
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1 Pc
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Steel Ball Indentor 2.5 mm with 5 spare balls
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--
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1 pc
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--
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--
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Test Block Rockwell 'C'
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1 Pc
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1 Pc
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1 Pc
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1 Pc
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Test Block Rockwell 'B'
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1 Pc
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1 Pc
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1 Pc
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1 pc
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Test Block HB 2.5/187.5
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--
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1 pc
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--
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--
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Test Block HR 30 N
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--
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--
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1 Pc
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--
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Allen Spanners
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5 pcs
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5 pcs
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5 Pcs
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5 Pcs
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Clamping Device
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1 Pc
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1 Pc
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1 Pc
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1 Pc
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Dashpot Oil
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1 Bottle
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1 Bottle
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1 Bottle
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1 Bottle
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Wooden case for std accessories
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1 Pc
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1 pc
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1 Pc
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1 pc
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Spare Fuse 1 Amp
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--
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--
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--
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1 Pc
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Power cable
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--
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--
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--
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1 Pc
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Brinell Microscope
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--
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1 Pc
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--
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--
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Instruction Manual
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1 Book
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1 Book
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1 Book
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1 Book
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Technical Data
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Model
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Unit
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AI-RASN
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AI-RASN(B)
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AI-RASN(T)
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AI-RASN(M)
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Major Load
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N
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588.4,980.7,1471,
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588.4,980.7,1471,1839,2452
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147.1,294.2,441.3,
588.4,980.7,1471
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588.4, 980.7,1471
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Major Load
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Kgf
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(60,100,150)
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(60,100,150,187.5,250)
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(15,30,45,60,100,150)
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(60,100,150)
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Minor Load
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N
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98.7
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98.7
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29.42,98.7
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98.7
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Minor Load
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Kgf
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10
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10
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3,10
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10
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Max Test Height
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mm
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230
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230
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230
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230
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Depth of Throat
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mm
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133
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133
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133
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133
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Net Weight Approx
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Kg
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65
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70
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62
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67
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Machine Dimensions
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mm
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L-450
W-265
H-627
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L 450
W-265
H-627
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L 450
W-265
H-627
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L-450
W-180
H-627
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Optional Accessories:
- Steel Ball Indentor 1/8", 1/4",1/2"
- Testing Table 200mm dia.
- Testing Table 70mm dia. with 'V' groove for round jobs 10 to 80mm dia.
- Vari-Rest to support odd shaped jobs.
- Jominy text fixture for end quench test
- Gooseneck adapter No. 1
- Special Diamond Cylinder anvil for testing big jobs above 20mm dia.
- Everyball anvil with 25.4 via or 38 mm dia. ball
- Gooseneck anvil for pipes 5 to 25mm ID with 5mm step inserts.
- Jack rest for long and heavy jobs
- Dot Matrix Printer for model RASN (E)
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Phone : 91-230-2432896
Fax : 91-230-2432420
