سختی سنج برینل نمایشگر دیجیتال بار کوچک Mitech MHB-62.5، بر اساس اصل مکانیکی فشار دادن فرورفتگی آلیاژ سخت به سطح نمونه برای ایجاد فرورفتگی، اندازه گیری سختی مواد را با اندازه گیری قطر فرورفتگی درک می کند. آخرین ادغام مکانیکی و الکتریکی نوری محصولات با تکنولوژی بالا است. جدید و قابل اعتماد با اندازه گیری دقیق است. با صفحه نمایش LED، عملکرد ساده، می تواند نتایج آزمایش را به صورت بصری نمایش دهد تا نیاز تست سختی را برای کنترل کیفیت و ارزیابی واجد شرایط نمونه قطعه کار برآورده کند. به طور گسترده ای در پردازش و ساخت فلزات، تجزیه و تحلیل شکست مواد مختلف فلزی و زمینه های دیگر مانند کالج ها و موسسات تحقیقاتی استفاده می شود. ابزار سختی سنجی نوع جدید برینل برای آزمایش سختی مواد مانند چدن، فولاد، آلیاژ نرم با کوچک است. و قطعه کار از نوع ورق نازک و غیره.
Function & application
l Metal processing industry quality control links
l Universities teaching and demonstration test
l The failure test of metal material
l The material hardness test of scientific research institutions
Working Principle
Hardness is not a simple physical quantity, but a reflection of the material elasticity, plasticity, strength and toughness .and hardness test is the most simple mechanical testing method to determine the metal material performance. Also one of the important means to judge the products quality.
Brinell hardness test: Test force(F) is on the steel ball with certain diameter(D) , pressed on sample surface. After a period of time, cancel the force. The indentation diameter is get by measuring with micrometer ocular,thus to calculate the average pressure(N/mm²).
Working Conditions
l Working Temperature：18℃～28℃；
l Relative Humidity：≤65％；
l Clean environment, no vibration；
l No corrosive media around.
Instrument Features
l Suitable for measuring the small or thin workpiece hardness , a variety of small load Brinell scale selection;
l Support Brinell, Rockwell, Vickers and other hardness standard conversion
l Built-in large-capacity chip, can store large amounts of data, comes with the database for comparison;
l Modeling novel, strong structure, high reliability, simple operation, intuitive readings, high test efficiency;
l With RS-232 interface, can communicate with the computer;
l Equipped with excellent performance of the carbide indenter, high hardness, wear resistance, good toughness, while high
temperature,
corrosion resistance, to ensure that the instrument test value is accurate, stable and reliable;
l Host stability is good, the workpiece surface quality and man-made factors on the hardness of the test results less impact;
l LCD display, menu smart tips, easy to operate;
l Optional shooting device, can achieve the measured indentation and material metallographic organization to shoot;
l Compliance with ISO 6506, ASTM E10-12, ASTM E-384, GB / T231.2, JIS Z2243 and other relevant domestic and foreign
standards.
Operating Method and Attentions
Instrument Maintenance
l Before using this instrument, please read the instruction manual carefully, learn more about the steps and precautions.
l In general, the first measurement point is only used to offset the gap between the support surface, without recording the
test results, from the second point of statistical test results;
l Machine add unloading test power, it is forbidden to turn the variable load the handwheel, such as rotating dislocation
can lead to internal gear, chaos test force, and even cause damage to items within the machine;
l User’s should follow the operating procedures, before and after the test should be repeated with standard block proofing
instrument. If a long time idle, re-boot after several proofreading, to be stable after the test results, and then test part;
l After applying the main test force in the hardness test, it is forbidden to turn the variable hand wheel.
l The instrument should be carried at the bottom of the handling, to prohibit cross. Before loading, please unplug the
power plug, fixed measuring lever and remove the weight and boom;
l When not in use for a long time, please cover the dust cover to prevent dust into the instrument interior. And
the hardness block, indenter should be coated with antirust oil to prevent rusting after using.
l Start using again after long time idling, please make testing after preheating the electrical components.
l The accuracy of the reading microscope has been adjusted before leaving factory. It is prohibited to disassembly without
authorization. Otherwise, it will reduce the reading accuracy of the micro eyepiece.
l The storage and using of the reading microscope should avoid dust, damp and corrosive gas environment;
l If there is dirt on the surface of the reading microscope lens, please wipe it with soft absorbent cotton or lens paper. If
there is oil pollution, please wipe it slightly by the absorbent cotton with industrial alcohol or ether.
l Should be regularly in the screw and hand wheel contact surface into a small amount of oil;
l Conducted at least once a year instrument verification, to ensure the accuracy of the hardness tester;
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