Manual Rockwell Hardness Testing Machine iRock-430H with Dial
Reading 0.5HR Resolution
Operation Manual Download: iqualitrol
iRock-430H Operation Manual
Technical Data Download: iqualitrol
Hardness Tester iRock-430H
Brief Introduction:
iRock-430H Rockwell hardness tester is a popular-used hardness
testing instrument to measure the hardness of the metal materials.
No need power supply, the speed of the test force loading is
regulated by the buffer and the test force is regulated by the
load-change hand wheel. It has easy operation and stable
performance, therefore it is widely used.
Application Range:
Suitable for quenched steel, tempered steel, annealed steel, cold
and hard casting, malleable cast iron, hard alloy steel, aluminum
alloy, copper alloy, bearing steel etc. Also suitable for surface
quenched steel, surface heat treating and chemical treating
materials, sheet, zinc layers, chrome layers, tin layers etc.
Technical Specification:
| Model | iRock-430H |
| Initial Test Force | 10kgf (98.07N) |
| Total Test Force | 60kgf (558.4N), 100kgf (980.7N), 150kgf (1471N) |
| Indenter | Cone Diamond Rockwell Indenter, ф1.588mm Ball Indenter |
| Loading Method | Manual |
| Hardness Reading | Dial |
| Resolution | 0.5HR |
| Max. Height of Specimen | 175mm |
| Throat | 165mm |
| Execute Standard | ISO 6508, ASTM E-18, JIS Z2245, GB/T 230.2 |
| Dimension | 520×255×700mm, Packing Dimension: 650×370×950mm |
| Weight | Net Weight: 80kg, Gross Weight: 100kg |
Packing List:
| Name | Qty | Name | Qty |
| Instrument Main Body | 1 set | Diamond Rockwell Indenter | 1 pc |
| ф1.588mmBall Indenter | 1 pc | Middle Plane Test Table | 1 pc |
| Large Plane Test Table | 1 pc | V-shaped Test Table | 1 pc |
| Hardness Block 60~70 HRC | 1 pc | Hardness Block 20~30 HRC | 1 pc |
| Hardness Block 80~100 HRB | 1 pc | Level | 1 pc |
| Screw Driver | 1 pc | Weight 1, 2, 3 | 3 pcs |
| Anti-dust Cover | 1 pc | Horizontal Regulating Screw | 4 pcs |
| Usage Instruction Manual | 1 copy | Spanner | 1 pc |
Principle of Rockwell Test:
The Rockwell test consists of measuring the additional depth to
which a carbide ball or diamond penetrator is forced by a heavy
(major) load beyond the depth of a previously applied light (minor)
load (SET point).
The minor load is applied first and a SET position is established
on the dial gauge or displacement sensor of the Rockwell tester.
Then the major load is applied. Without moving the piece being
tested, the major load is removed and, with the minor load still
applied, the Rockwell hardness number is automatically indicated on
the dial gauge or digital display.
The diamond penetrator is used for testing materials such as
hardened steels and cemented carbides. The carbide ball
penetrators, available with 1/16 inch, 1/8 inch, 1/4 inch, and 1/2
inch diameter, are used when testing materials such as steel-copper
alloys, aluminum and plastics to name a few.
Rockwell testing falls into two categories: Regular Rockwell
testing (e.g., C and B scales) and Rockwell superficial testing
(e.g., 30 N and 30 T scales).
High Rockwell hardness numbers represent hard materials and low
numbers soft materials.
The diamond penetrator is used for testing materials such as
hardened steels and cemented carbides. The carbide ball
penetrators, available with 1/16 inch, 1/8 inch, 1/4 inch, and 1/2
inch diameter, are used when testing materials such as steel-copper
alloys, aluminum and plastics to name a few.
Rockwell testing falls into two categories: Regular Rockwell
testing (e.g., C and B scales) and Rockwell superficial testing
(e.g., 30 N and 30 T scales).
High Rockwell hardness numbers represent hard materials and low
numbers soft materials.
Rockwell Hardness Scales:
| Scale Symbol | Indenter | Test Force (Kgf) | Dial Figures | Typical Application of Scales |
| HRB | 1/16” Ball | 100 | red | Copper alloys, soft sheets, aluminum alloys, malleable iron, etc. |
| HRC | Diamond | 150 | black | Steel, hard cast irons, pearlitic malleable iron, titanium, deep
case hardened steel, and other materials harder than B100. |
| HRA | Diamond | 60 | black | Cemented carbides, thin steel, and shallow case-hardened steel. |
| HRD | Diamond | 100 | black | Thin steel and medium case hardened steel, and pearlitic malleable
iron. |
| HRE | 1/8” Ball | 100 | red | Cast iron, aluminum and magnesium alloys, bearing metals. |
| HRF | 1/16” Ball | 60 | red | Annealed copper alloys, thin soft sheet metals. |
| HRG | 1/16” Ball | 150 | red | Malleable irons, copper-nickel-zinc and cupro-nickel alloys. Upper
limit G92 to avoid possible flattening of ball. |
| HRH | 1/8” Ball | 60 | red | Aluminum, zinc, lead. |
| HRK | 1/8” Ball | 150 | red | Bearing metals and other very soft or thin materials. Use smallest
ball and heaviest load that does not give anvil effect. |
| HRL | 1/4” Ball | 60 | red |
| HRM | 1/4” Ball | 100 | red |
| HRP | 1/4” Ball | 150 | red |
| HRR | 1/2” Ball | 60 | red |
| HRS | 1/2” Ball | 100 | red |
| HRV | 1/2” Ball | 150 | red |
