Bench Top Touch Screen Digital Rockwell Hardness Testing Machine
with Rockwell hardness conversion scale
Product Features:
- Electric loading with weights, high precision sensor.
- Touch screen interface, easy operation.
- Automatic correction of high, medium and low hardness values.
- Built-in hardness value correction of convex cylindrical surface.
- Strong data processing function, conversion of hardness value HR,
HB, HV and so on, set the qualified range, overrun alarm, you can
enter the tester, the sample names and other information.
- Test results can be stored, processed and printed automatically.
Application Fields:
Industrial production, Inspection of product quality on processing
technology. Ferrous and nonferrous metals, Hardened steel, tempered
steel, annealed steel, hardened steel, sheet of various
thicknesses, carbide materials, powder metallurgy materials,
hardness and thermal spray coating.
Working principle of Rockwell hardness test:
The Rockwell scale is a hardness scale based on indentation
hardness of a material. The Rockwell test determines the hardness
by measuring the depth of penetration of an indenter under a large
load compared to the penetration made by a preload. There are
different scales, denoted by a single letter, that use different
loads or indenters. The result is a dimensionless number noted as
HRA, where A is the scale letter.
Hardness scale, force, Indenter relation:
| Scale | Indenter | Preliminary test force (N) | Total test force (N) | Applications |
| A | Diamond indenter coning angle 120°0.2mm radius of top sphere |
98 | 588 | Horniness alloy, cementite steel |
| D | 980 | Thin steel, quenched case |
| C | 1471 | Quenched steel, thermal refined steel, cast steel |
| F | Diameter of steel ball 1.588mm (1/16 inch) | 588 | Anneal copper alloy, thin soft steel |
| B | 980 | Soft steel, aluminum alloy, copper alloy, casting |
| G | 1471 | Pearliest iron, copper, nickel, zinc, nickel alloy |
| H | Diameter of steel ball 3.175mm (1/8 inch) | 588 | |
| E | 980 | |
| K | 1471 | |
Technical parameters:
| Model | R-150T |
| Initial load | 10kgf (98.07N) |
| Total load | 60kgf (588N), 100kgf(980N), 150kgf(1471N) |
| Rockwell Scale | HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, HRL, HRM, HRR, HRP, HRS, HRV |
| Conversion Scale | HRA, HRB, HRC, HRD, HRF, HR15N, HR30N, HR45N, HR15T, HR30T, HR45T, HV, HBW |
| Hardness range | HRA:20-88, HRB:20-100, HRC:20-70, HRD:40-77, HRE:70-100,
HRF:60-100, HRG:30-94, HRH:80-100, HRK:40-100, HRL:100-120,
HRM:85-115, HRR:114-125 |
| Dwell time | 0-99s |
| Resolution | 0.1HR |
| Load value error | 0.5% |
| Hardness reading | LCD display |
| Screen size | 8 inch |
| Data Storage / Output | 1) Machine can store 60 pcs test results, over 60pcs memories
machine will delete the last time test result 2) Built-in printer 3) RS-232 interface (or USB flash disk automatically stored) 4) If want to connect with computer, have to additional purchase
software. Note: If optional USB interface instead of RS232 interface, the
built-in printer will be removed. |
| Carried Standard | BSEN 6508, ISO 6508, ASTM E18, GB/T230 |
| Max Height of Specimen | 200mm |
| Throat depth | 160mm |
| Dimension & N/W | 560×200×800mm 70kg |
| Packing size & G/W | 780*470*940mm 90kg |
| Power supply | AC220+5%,50～60Hz |
Standard Accessories:
| Name | Quantity | Name | Quantity |
| Diamond Rockwell Indenter | 1 | 1.5875mm Ball Indenter | 1 |
Hardness block (HRC High Low 2, HRB 1) | 3 | Large, Medium, “V” shaped Testing Table | 1 each |
| Weights(A, B, C) | 1 each | Plastic Dustproof cover | 1 |
| Power line | 1 | 2A fuse | 1 |
| Operation Manual | 1 | Product certificate | 1 |
