Nj-vx Series Portable spheroidizing rate tester can measure the spheroidization rate without damage, and provide fast ultrasonic rate detection to determine the spheroidization rate of safety parts such as automobiles. At the same time, it takes into account the reliability, performance and durability. No matter where you test, VX series spheroidizing rater is your trustworthy and hardworking partner. This innovative spheroidization meter will provide users with extraordinary experience. In the case of reference block, it is also applicable to the measurement of vermicular rate and spheroidization rate of cast iron materials, in accordance with JB / t9219 standard; it is also applicable to the sound velocity measurement of metal, plastic, ceramic, glass, glass fiber and any other good ultrasonic conductor.
1、 Function
1. Nondestructive spheroidization rate measurement
(1) Based on the relationship between ultrasound and spheroidization rate, the non-destructive spheroidization rate measurement is carried out; by accumulating a large number of experimental data, the algorithm of spheroidization rate is optimized to improve the measurement accuracy.
2. Penetration coating thickness measurement
(1) The powerful through coating thickness measurement function enables you to avoid the tedious preparation work of hard grinding, and you can easily measure the thickness by only slightly treating the coating surface
3. No standard test block is needed, and the probe zero point is calibrated automatically
(1) Advanced probe zero point real-time automatic calibration technology, tracking the world's new technology trend. It can avoid the trouble of manual calibration of probe zero point, solve the measurement error caused by probe zero drift, ensure the accuracy of measurement value, and get rid of dependence on standard test block.
4. USB storage, plug and play
(1) USB interface can be inserted into U-disk, no need to drive, plug and play, realize thickness report
2、 Performance index
Working principle: ultrasonic (pulse echo / echo echo)
Sound speed: 4000-6000m / S
Spheroidization rate: percentage: 50-100%, grade: 1-6
Detection range: 0.75-50mm (depending on grain and surface condition)
Thickness measurement resolution: 0.1 mm (> 100 mm) / 0.01 mm (< 100 mm)
Indication accuracy: 1%
Zero point automatic calibration: real time calibration of probe zero point is realized by unique zero point automatic calibration technology
V path correction: automatic
Probe connection status indication: Yes
Coupling state judgment: it indicates the signal coupling strength; the measured value shows solid / hollow change, which can directly indicate whether the measurement can be normal
External dimension: 165 × 82 × 30 mm
Weight: 250g (including battery)
3、 Working environment
Temperature: - 20 ℃ ~ 70 ℃
Humidity: 5% - 90%
There is no strong vibration, strong magnetic field, corrosive medium and serious dust in the surrounding environment.
Transmit pulse
Excitation pulse
150V negative sharp pulse
receiving system
Gain: high / low / Auto
Frequency bandwidth: 0.5-15mhz
Display: LCD dot matrix display
(1) High contrast 128X64 dot matrix LCD display, exquisite printed text, numbers and symbols, high brightness El backlight
Measurement refresh rate: 5 times / s for single point measurement and 25 times / second for scanning mode
Measured value / alarm: measured value display
(1) Three customized measurement display areas, online statistical value or sound speed can be selected
Data statistics:
(1) Online Statistics: maximum, minimum and standard deviation
(2) File statistics: maximum / minimum, mean, mean square deviation
Alarm: threshold sound and light alarm
Storage:
(1) Data set: 1000 sets
(2) Thickness value: 1000 pieces / group, linear
USB storage
(1) Breaking through the traditional storage mode, the thickness measurement report can be stored anytime, anywhere, without communication software, and free from the shackles of cables
Input and output
(1) Probe connection: Lemo 00 (C5) x2
Communication: USB
Language: Chinese / English
Unit: mm / inch
Power Supply
(1) Battery: 1.5V AAA battery X4
working hours
It can work continuously for 200 hours (under standard test conditions)
Standard configuration:
Host: 1 probe: 1 battery: 1 set
Instruction: 1 packing box: 1 coupling agent: 1 bottle
Portable spheroidizer
Model spheroidization rate measurement, automatic zero calibration without test block, measurement accuracy, USB, penetration coating, statistical function, storage capacity
NJ upad VX v v 0.1 / 0.01mm v v online statistics / data statistics 1000 groups
Portable spheroidizing rate probe
Application type frequency probe diameter measurement range (depending on grain and surface conditions) minimum pipe diameter
Standard application: da301s 5 MHz 10 mm 0.75 mm ~ 20.0 mm Φ 20 mm × 3.0 mm
High attenuation measurement (coarse crystal) da408s 2 MHz 22mm below 50mm 20mm
Mechanical properties of common ductile iron
Spheroidal graphite cast iron matrix heat treatment state σ (MPA) δ (%) hardness HB
Ferrite
As cast
450~550
10~20
137~193
Ferrite
annealing
400~500
15~25
121~179
Pearlite + ferrite
As cast or annealed
500~600
5~10
147~241
pearlite
As cast
600~750
2~4
217~269
pearlite
normalizing
700~950
2~5
229~302
Pearlite + fragmentary ferrite
Partial austenite normalizing
600~900
4~9
207~285
Bainite + fragmentary ferrite
Partial austenite austempering
900~110
2~6
HRC32~40
Lower bainite
Isothermal quenching
1200~1500
1~3
HRC38~50
Tempered sorbite
Quenching, tempering at 550-600 ℃
900~1200
1~5
HRC32~43
Tempered martensite + tempered sorbite
Quenching, tempering at 360-420 ℃
1000~1300
0.5~1
HRC45~50
Tempered martensite
Quenching, tempering at 200-250 ℃
700~900
HRC55~61