دستگاه سختی سنج قابل حمل MH320

سختی سنج قابل حمل MH320 بر اساس اصل اندازه گیری سختی Leeb است، می توان آن را به سرعت و به راحتی برای تست سختی مواد فلزی در محل استفاده کرد و از تبدیل رایگان بین سختی Leeb، Brinell، Rockwell و سایر مقیاس ها پشتیبانی کرد. از صفحه نمایش ال سی دی ماتریس 128 × 64 نقطه، اطلاعات غنی، عملکرد بصری، پایدار و چاپگر حرارتی یکپارچه با سرعت بالا استفاده می کند که چاپ را با نتایج اندازه گیری فوری امکان پذیر می کند. می توان از آن به طور گسترده در پردازش و ساخت فلز، تجهیزات ویژه، خرابی دائمی قطعات استفاده کرد. تجزیه و تحلیل، بازرسی و سایر زمینه ها. این به ویژه برای تست سختی قطعات بزرگ و بخش غیر قابل جابجایی در محل مناسب است. برای بهبود راندمان تولید و نرخ عبور است و انتخاب عاقلانه ای برای صرفه جویی در هزینه تولید است.

Function & application
l Die cavity of molds

l Bearings and other parts

l Failure analysis of pressure vessel, steam generator and other equipment

l Heavy work piece

l The installed machinery and permanently assembled parts.

l Testing surface of a small hollow space

l Requirements of formal original record for test results

l Material identification in the warehouse of metallic materials

Rapid testing in large range and multi-measuring areas for large-scale work piece

Working Principle
The energy quotient is quoted in the hardness unit HL and is calculated from comparing the impact and rebound velocities of the impact body. It rebounds faster from harder samples than from softer ones, resulting in a greater energy quotient which is defined as 1000×Vr/ Vi.

HL=1000×Vr/ Vi

Where:

HL— Leeb hardness value

Vr — Rebound velocity of the impact body

       Vi — Impact velocity of the impact body

Working Conditions
l Working temperature： -10℃～＋50℃；

l Storage temperature：-30℃～＋60℃

l Relative humidity: ≤90％；

The surrounding environment should avoid of vibration, strong magnetic field, corrosive medium and heavy dust.

Instrument Features
l Based on the principle of Leeb hardness testing theory. It can measure the Leeb hardness of all metallic materials.

l One main unit can match to 6 impact devices

l Support Steel ,when using D/DC sensor to test steel,it can show HB directly.

l Preset on up and low limit of hardness value lower limits, it will alarm automatically if it is out of range alarm,which is convenient for the user to do more testings.

l Chinese-English converting, simple menu-driven operation, and convenient.

l High brightness, easy to use in dimly lit environments and intense sunlight.

l 500 groups (impact times 32 ~ 1) hardness measurements, each set of data includes single testing value, average value,

measurement date / time, impact direction, frequency, material, hardness, and other information.

l Integrated thermal printer with the instrument as a whole, and quiet operation, fast print speeds, you can print the test report  on-site.

l Software calibration automatically

l Built-in NI-MH ,it can work for not less than 150 hours; standby with automatic screen, automatic sleep, automatic shutdown and other power-saving features.

l Real-time display the remaining battery power, charging progress is displayed while charging.

l USB interface can do transmission measurements, the measured value storage management, statistical analysis of the measured value, the measured value of the print report and batch set the instrument parameters through the PC data  processing software, to meet the higher demand for quality assurance and management.

l Small size, portable, highly integrated, stable and reliable performance, suitable for harsh environment field operations,  prevent from vibration, shock and electromagnetic interference.

l Dimension:221mm×80mm×32mm

Operating Method and Attentions
1 Start-Up
----Insert the plug of the impact device into the socket of impact device on the instrument.

----Press the power key，now power is on. The instrument is in working mode.

2 Loading
Pushing the loading-tube downwards until contact is felt. Then allow it to slowly return to the starting position or using other method locking the impact body.

3 Localization

Press the impact device supporting ring firmly on the surface of the sample, the impact direction should be vertical to the testing surface.

4 Testing

----Press the release button on the upside of the impact device to test. The sample and the impact device as well as the operator are all required to be stable now. The action direction should pass the axis of the impact device.

----Each measure area of the sample usually need 3 to 5 times of testing operation. The result data dispersion should not more than mean value±15HL.

----The distance between any two impact points or from the center of any impact point to the edge of testing sample should conform to the regulation of Table 4-1.

---- If want accurate conversion from the Leeb hardness value to other hardness value, contrastive test is needed to get conversion relations for the special material. Use inspection qualified Leeb hardness tester and corresponding hardness tester to test at the same sample respectively. For each hardness value, each measure homogeneously 5 points of Leeb hardness value in the surrounding of more than three indentations which need conversion hardness, using Leeb hardness arithmetic average value and corresponding hardness average value as correlative value respectively, make individual hardness contrastive curve. Contrastive curve at least should include three group of correlative data.

5 Read Measured Value

After each impact operation, the LCD will display the current measured value, impact times plus one, the buzzer would alert a long howl if the measured value is not within the valid range. When reaching the presetting impact times, the buzzer will alert a long howl. After 2 seconds, the buzzer will alert a short howl, and display the mean measured value.

6 Notification
---- Replacing the impact device must be done during Power off. Otherwise the main body could not identify the type of the impact device, and it may damage the circuit board of the main body.

----You could not save the current test value if the impact time is less than the presetting times value.

---- Only type D and type DC of impact device have the function of strength test option. You can not change the setting to strength testing when using other types of impact device. The setting would be set to hardness testing automatically after replacing the impact device whether the setting is hardness testing or not before.

---- Not all materials could convert to all hardness scale value. The hardness scale is reset to HL automatically after changing the material. So select material firstly before changing the hardness scale.

Instrument Maintenance
After the impact device has been used for 1000 to 2000 times, please use the nylon brush provided to clean the guide tube and the impact body. Follow these steps when cleaning the guide tube,

1.unscrew the support ring

2.take out the impact body

3.spiral the nylon brush in counterclockwise direction into the bottom of guide tube and take it out for 5 times

4.install the impact body and support ring when complete.

Release the impact body after use.

Any lubricant is prohibited inside the impact device.