JKHP-3900 Ultrasonic Hardness Tester

Ultrasonic Hardness Tester Features

● High measurement accuracy — up to ±3%HV, ±3%H1.5HR. (This measurement accuracy is obtained when using the test stand for the ultrasonic hardness tester.)

● Small indentation — requires a high-power microscope to observe.

● Fast measurement speed — tests are output within 2 seconds.

● Large screen display — directly displays current measurement value, cumulative measurement value, maximum value, minimum value, average value, and unit conversion valuessive storage — can store 1000 sets * 20 measurement data points within the instrument.

● Simple calibration — can store 20 sets of calibration data within th instrument, including 1 default set and 19 user-settable sets (Set 00 is calibrated with a steel standard block before leaving the factory and can be used directleasure steel; Sets 01 to 19 can be calibrated by the user using standard blocks of the same material as the test material).

Scope of Application

● Hardness measurement of flange edges, gear roots, stampings, tools, dies, thin plates, surface-hardened teand gear grooves, and tapered sections;

● Hardness measurement of shafts, thin-walled pipes, and containers;

● Hardness measurement of wheels and turbine rotors; measurement of drill bit edges;

● Hardness measurement of welds;

● Measurement of deep holes with specific diameters, deep concave/convex surfaces with large curvature, agular planes;

● Capable of covering hardness measurement for the vast majority of ferrous and non-ferrous metals and their alloys in industrial production.

Technical Parameters

● Test Range:

Rockwell HRA: 61～85.6

Rokwell HRB: 41～100

Rockwell HRC: 20.3～68

Vickers HV: 80～159

Brinell HB: 76～618

Tensile Strength: 255～2180 N/mm²

● Test Direction: Spports 360°. Measurement can be performed as long as the indenter forms a 90°±5° angle with the test surface. (Note: Where "perpendicular" is menti between the indenter and the test surface in this manual, a deviation of ±5° is allowed, i.e., 90°±5°.)

● Hardness Scales: HB/HRC/HV/HRA/HRB/HS/MPa.

● Battery Specifications: Voltage 4.2V, Capacity 4800mAh rechargeable litm battery.

● Charging Time: The theoretical charging time for the battery supplied with this instrument is 8 hours. To extend battery life, each charge should be no less tha 4 hours.

● Battery Life: After a full charge, the instrument can operate normally for 10 hours (with backlight turned off).

● Data Printing & Export: Measurement data can beinted via an external portable printer or exported to a computer via a super terminal. Please refer to sections 6.8 and 6.11 for detailed operations.

● InterStorage: Can store 1000 groups of data, with 20 measurements per group.

● Measurement Results: Multiple points can be measured and averaged for workpieces with uneven hardness istribution. Each data group also provides maximum, minimum, and converted values.

● Optional Test Stand: Enables fast batch testing of small finished parts with simple operation and high test accuNon-destructive to the test surface, stable performance, and high test accuracy.

Maintenance and Repair

● Before and after measurement, please gently wipe the indenter on the probe with a non-woven cloth dipped in alcohol lean off any dirt.

● After measurement, please use a clean cloth to wipe off any dirt from the surface of the main unit and the probe.

● Please charge the device befose if it has not been used for a long time.

● Since the diamond indenter on the probe is hard and brittle, it is prone to detachment upon severe impact. Therefore, plthe silicone protective cover over the probe when not in use, and store the main unit and accessories in the accompanying tool case.