I. Applications
This HBRV-187.5 Motorized Brinell Rockwell Vickers Hardness Tester is produced by Nortest Instrument Group, it's a multi-functional hardness tester with Brinell, Rockwell &Vickers 3 kinds of testing methods and 7 steps testing force will meet the needs of many kinds of hardness measurement. The instrument is adopted automatic shifter to load, dwell and unload testing force, therefore the operation for this instrument is simple, easy and quickly. Hardness is one of the important mechanic characteristics of the material while the hardness testing is the most quickly and economic testing method, as well as an important method to judge the quality of the metal material or its component parts. The mechanic characteristics of most metal materials such as the strength, tiredness, wriggling and wearing out can be tested out approximately through its hardness testing.
II. Main technical specifications
1. The Initial Test Force: 98.07N (10Kg); Tolerance: ± 2.0%
2. The Tolerance of Total Test Force: ± 1.0%
2.1 The Test Force of Brinell Hardness: 294.2N(30kg), 306.5N (31.25kg), 612.9N (62.5kg),
980.7N(100kg), 1893N(187.5kg)
2.2 The Test Force of Rockwell Hardness: 588.4N (60kg), 980.7N (100kg), 1471N(150kg)
2.3 The Test Force of Vickers Hardness: 294.2N (30Kg), 980.7N (100Kg)
3. The Indenter Specifications:
3.1 The diamond Rockwell indenter
3.2 The diamond Vickers indenter
3.3 The φ1.5875 mm, φ2.5 mm, φ5 mm ball indenter
4. The Power Source and the Voltage: AC220V±5%, 50-60 HZ
5. Time-delayed control: 2-60 seconds, can be adjusted
6. The Distance from the Indenter Central Point to the Instrument Body: 165mm.
7. The Max. Height of the Specimen:
7.1 The Max. Height of the Specimen for Rockwell Hardness: 170mm
7.2 The Max. Height of the Specimen for Brinell & Vickers Hardness: 140mm
8. The Amplification of Objective: 37.5×; 75×
9. The Dimension of Hardness Tester (L×W×H): 520×215×700mm
10. The Weight of Hardness Tester: 78kg
Rockwell Hardness Tester
11. The Tolerance of Rockwell Hardness Display Value
Hardness Scale | Hardness Range of The Standard Testing Blocks | The Max. Tolerance of Hardness Display Value |
HRA | 20~≤75HRA | ±2HRA |
>75~≤88HRA | ±1.5HRA | |
HRB | 20~≤45HRB | ±4HRB |
>45~≤80HRB | ±3HRB | |
>80~≤100HRB | ±2HRB | |
HRC | 20~≤70HRC | ±1.5HRC |
Brinell Hardness Tester
12. The repetition and tolerance of displayed Value for Brinell hardness tester
Hardness Value of Standard Testing Blocks (HBW) | Tolerance of Displayed Value (%) | Repetition of Displayed Value (%) |
≤125 | ±3 | ≤3 |
125 | ±2.5 | ≤2.5 |
>225 | ±2 | ≤2 |
Vickers Hardness Tester
13. The Tolerance and Repetition of Displayed Value for Vickers Hardness Tester
Tolerance of Displayed Value | Repetition of Displayed Value | |||
Hardness Scale | Displayed Value of Hardness Test Block | Tolerance of Displayed Value | Displayed Value of Hardness Test Block | Repetition of Displayed Value |
HV30 HV100 | ≤250HV | ±3% | ≤225HV | 6% |
300~1000HV | ±2% | >225HV | 4% | |
Accessories (The Packing List )
1. Accessories Kit of Main Body
No. | Description of Goods | Quantity |
1 | Diamond Rockwell Indenter | 1 PC |
2 | 1.5875mm Ball Indenter | 1 PC |
3 | Large Testing Table; Medium Testing Table; "V" Shaped Testing Table | Total 3 PCS |
4 | Standard Rockwell Hardness Block: | |
HRC ( High); HRC(Lower); HRB | Each 1 PC | |
5 | Weight 0, 1, 2, 3, 4 | Total 5 PCS |
6 | Power Cord | 1 PC |
7 | Fuse 2A | 2 PCS |
8 | Level | 1 PC |
9 | Horizontal Regulating Screw | 4 PCS |
10 | Screwdriver; Spanner | Each 1 PC |
11 | Nylon Anti-dust Bag | 1 PC |
12 | Instruction Manual | 1 PC |
13 | Check List of Vickers Hardness | 1 PC |
14 | Check List of Brinell Hardness | 1 PC |
2. Accessories Kit of Microscope
No. | Description of Goods | Quantity |
1 | Seat of Microscope (with Inside Light) | 1 PC |
2 | Eyepiece | 1 PC |
3 | 2.5X Objective | 1 PC |
4 | 5X Objective | 1 PC |
5 | Slipped Testing Table | 1 PC |
6 | Outside Light | 1 PC |
7 | Diamond Vickers Indenter | 1 PC |
8 | 2.5mm, 5mm Ball Indenter | Total 2 PCS |
9 | Standard Vickers Hardness Block(HV30) | 1 PC |
10 | Standard Brinell Hardness Block(HBW/2.5/187.5) | 1 PC |
