Ultrasonic Hardness Checker
SH-75A
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The ultrasonic hardness checker (SONOHARD) works quite differently to conventional hardness testers. In conventional hardness tests, a microscope is used to measure the diameter of the depth of an indentation made on a test sample. The SONOHARD works by pushing a vibration rod with an attached diamond indenter onto a test specimen with a constant force. A longitudinal ultrasonic vibration is then applied to the rod to measure hardness.
FEATURES
 | Measurement only takes a few seconds |
| Leaves only tiny indentations on test specimens (approx. 0.1mm2) |
| Hardness values can be read directly (HV, HRC, Hs, HB) |
| Conversion to breaking strength (N/mm2) |
| Measuring stands (wooden, iron, resin, etc.) do not influence measurement |
| Measurements do not affect the backs of test samples |
| Can be certified by Nippon Kaiji Kyokai (NK) |
| 4000 points of data memory |
| 10 points of calibration memory |
ADVANTAGES
| Portability makes it ideal for use in the field |
| Measurements can be made freely in any direction |
| No need to change parts regularly, resulting in lower running costs |
| Enables hardness checking for hardening and annealing control |
| Large and complex-shaped objects can be measured as they are |
| Enables hardness checking for metal fatigue inspections to identify equipment structural problems |
| Easy data management using a PC with data transfer software (option) |
| Data can be output to external printers (option) |
| Measurement data can be output to an alarm (non-voltage contact) according to upper limit and lower limit settings. |
APPLICATIONS
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Motor vehicle parts |
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Pressed moldings |
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Steel fame welds |
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Measurement of small parts |
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Gravure printing rolls |
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Papermaking mill rolls |
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Measurement of roll surfaces |
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Measurement of pipes for high-pressure gases and liquids |
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Railway axles |
SPECIFICATIONS
| Name/model | Ultrasonic Hardness Checker SONOHARD
SH-75A |
| Indenter | Diamond indenter for Micro-Vickers (a pyramid with an angle of 136° between opposite planes) |
| Test load | 19.61N (2kgf) |
| Measuring range | Vickers hardness: HV50 to HV999 Rockwell hardness: HRC10.0 to HRC70.0 Shore hardness: HS20.0 to HS99.9 Brinell hardness: HB85 to HB550 |
| Applicable test materials | Steel (other materials can be tested using a standard calibration block) |
| Data memory | 4000 points |
| Power source | AM-965N for 100V AC adapter or Ni-Cd battery (SH-75A body built-in, BL ON: 5 h, BL OFF: 8 h) |
| Dimensions | SH-75A body: 190 x 110 x 109mm Electric probe: ø 50 x 164.5mm Carrying case: 358 x 267 x 150mm |
| Weight | SH-75A body: approx. 1.2kg Electric probe: approx. 250g (excl. electric probe cable) |
PICTURE
