เครื่องทดสอบความแข็งแบบตั้งโต๊ะชนิด Rockwell 900-440 (Phase ll)
เครื่องทดสอบความแข็งคือการระบุความแข็งของชิ้นงานทดสอบ โดยการวัดความลึกโดยกดทางเข้าของหัวเพชร หรือลูกบอลเหล็กเข้าไปในชิ้นงาน มันใช้งานง่ายและใช้กันอย่างแพร่หลายในซอฟท์, โลหะหนัก, โลหะที่ไม่ใช่เหล็ก, อโลหะ
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Digital TWIN Rockwell/Superficial Rockwell Hardness Tester
Load Cell, Closed Loop, TWIN Rockwell Hardness Tester!
Cast Iron Body! w/Touch Screen Functions



Features: Model No. 900-440 TWIN Rockwell/Superficial Rockwell Hardness Tester
This digital Rockwell hardness tester with fully automated load/unload procedures affords highly sensitive and accurate readings. Micro computer controlled Touch Screen with USB output to flash drive. The 900-440 digital Rockwell hardness tester offers programmable scale conversions, dwell times, statistical capabilities and test counter.
Capable of testing in all of the regular Rockwell and Superficial Rockwell hardness scales.
Direct Loading Method With Load-Cell Instead Of Dead Weight System. High Speed Test Cycle and Extremely Accurate Loading Control
Automatic conversions to HB, HV, Popular Rockwell Scales
Touch Screen selectable system
Upper/Lower Limit Settings
Test resolution: 0.01HR Rockwell unit;
Operation temperature: 50° - 95°F (10ᵒC~35ᵒC)
Ambient environment: clean, no vibration, no strong magnetic field, and no corrosive medium;
Power supply: single phase, AC, 110-220 with manual change, 50~60Hz, 4A;
Minor Load |
3kgf / 10 Kgf |
Major Load |
60 Kgf, 100 Kgf, 150 KGF, 15KGF, 30KGF, 45KGF |
Test Force Application |
Load Cell Closed Loop |
Test Force Control |
Motorized |
Results Display |
Hi Def LCD Digital Readout |
Resolution |
0.1HR |
Vertical Capacity |
8.0” |
Throat Depth |
7.8” |
Height |
22” |
Width |
8” |
Depth |
31” |
Weight |
175 lbs |
Accessories: Included
C-scale Diamond Indenter
- 1/16” Ball Indenter
- 2- HRC test Blocks
- 1- HRB Test Block
- 1-HRN Test Block
- Test Table 5.87” (150mm)
- Flat Anvil 2.5” (63mm)
- Sli. V- Anvil
- Dust Cover
- Accessory Case
Scale Symbol |
Indentor Type |
Preliminary Force N (kgf) |
Total Force N(kgf) |
Typical Applications |
A |
Spheroconical Diamond |
98.07 (10) |
588.4 (60) |
Cemented carbides, thin steel, and shallow case hardened steel |
B |
1/16” Carbide Ball |
98.07 (10) |
980.7 (100) |
Copper alloys, soft steels, aluminum alloys, malleable iron, etc. |
C |
Spheroconical Diamond |
98.07 (10) |
1471 (150) |
Steel, hard cast irons, pearlitic malleable iron, titanium, deep case hardened steel, other harder than HRB 100 |
D |
Spheroconical Diamond |
98.07 (10) |
980.7 (100) |
Thin steel and medium case hardened steel, and pearlitic malleable iron |
E |
1/8” Carbide Ball |
98.07 (10) |
980.7 (100) |
Cast Iron, Aluminum and magnesium alloys, and bearing metals |
F |
1/16” Carbide Ball |
98.07 (10) |
588.4 (60) |
Annealed copper alloys and thin soft sheet metals |
G |
1/16” Carbide Ball |
98.07 (10) |
1471 (150) |
Malleable irons, copper-nickel-zinc and cupro-nickel alloys |
H |
1/8” Carbide Ball |
98.07 (10) |
588.4 (60) |
Aluminum, zinc and lead |
K |
1/8” Carbide Ball |
98.07 (10) |
1471 (150) |
|