MITECH MHB-3000 Electronic Brinell Hardness Tester

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MITECH MHB-3000 Electronic Brinell Hardness Tester

MITECH MHB-3000 Electronic Brinell Hardness Tester adalah alat pengukur yang digunakan berdasarkan prinsip mekanis dari indentor paduan keras yang menekan ke permukaan sampel untuk menghasilkan lekukan, mewujudkan pengukuran kekerasan material dengan mengukur diameter lekukan, baru dan andal tinggi dengan pengukuran yang akurat. Perangkat ini memiliki delapan LED tabung digital dan tampilan tabung sekunder bercahaya, operasi sederhana, yang secara visual dapat menampilkan hasil pengujian untuk memenuhi persyaratan pengujian kekerasan untuk kontrol kualitas dan penilaian sampel benda kerja yang memenuhi syarat.

Product Description

MITECH MHB-3000 Electronic Brinell Hardness Tester

MITECH MHB-3000 Brinell Hardness Gauge is a measuring device used based on the mechanical principle of a hard alloy indenter pressing into the sample surface to produce an indent, realizing the measurement of the hardness of the material by measuring the indentation diameter, it is novel and high reliable with accurate measurement. This device features eight digital tube LED and luminous secondary tube display, simple operation, which can visually display the test results to meet the hardness testing requirements for quality control and qualified assessment of the workpiece sample.

This device is widely used in metal processing and manufacturing, various failure analysis of metal materials and other fields such as colleges and research institutes. It is a new type Brinell hardness tester for testing the hardness of materials such as cast iron, steel, soft alloy and so on. The control part is a closed-loop control system, which can dynamically reflect the real load changes.

Function & application

  • Metal processing industry quality control links.
  • Universities teaching and demonstration test.
  • The failure test of metal material.
  • 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 simplest 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

  • Working Temperature:18℃~28℃;
  • Relative Humidity:≤65%;
  • Clean environment, no vibration;
  • No corrosive media around.

Features MITECH MHB-3000 Electronic Brinell Hardness Tester :

  • Suitable for measuring the surface is more rough cast iron, steel and other non-homogeneous specimen Brinell hardness;
  • Using electronic automatic loading system, remove the load weight;
  • With ten test force, a wider range of tests, higher precision;l
  • The control part is the closed-loop control system, which can dynamically reflect real load changes.
  • Modeling novel, strong structure,high reliability and operability , intuitive, high test efficiency;
  • Equipped with excellent performance of the carbide indenter, high hardness, wear resistance, good toughness, while high temperature, corrosion resistance, to ensure that the instrument measured standard, stable and reliable;
  • Host stability is good, the workpiece surface quality and man-made factors on the hardness of the test results less impact;
  • Panel with two-color LED display, red for small gear, green for large-scale force;
  • Compliance with ISO 6506, ASTM E10-12, ASTM E-384, GB / T231.2, JIS Z2243 and other relevant domestic and foreign standards.

Instrument Maintenance :

  • Each technical requirement of the instrument has already reached the national standards before leaving factory. But its disassembly, transportation or voltage after delivery might cause some data in the instrument changed. So to make the electronic component in normal operation to reduce the testing error, you can use test force of 29400N(3000kgf) pressing times before starting the instrument to eliminate the instrument deformation.
  • The anti-interference component has been installed in the circuit to ensure the transmission of the loading or unloading single of the test force at all levels. At the same time, make sure no strong interference source around when using the instrument, and power off the instrument after finished the testing.
  • All the screws and the caps have been fasten tightly before the instrument leaving factory. However, the screw and cap may become less crowded because that the screw lever for loading and unloading are rotating all the time. If there is irregular noise, when the screw lever rotating, please check and tightened the screw and cap as the below figure shown.

  • The surface of the tested parts should be smooth without dirt, oxide, pits and impressive processing traces;
  • The selection of the test force shall make the indentation diameter within the prescribed range: 0.25D < d < 0.6D (D: indentation diameter, D: steel ball diameter);
  • The minimum thickness of the specimen shall be greater than 10 times of the indentation depth. After testing, the back of the specimen shall not have visible deformation marks;
  • The Instrument power supply shall be grounded reliably and equipped with voltage-stabilizing device;
  • If there is some slight noise during loading or unloading, it is the loading mechanism making adjustment automatically, which is a normal phenomenon.
  • The instrument screw level and other movable surface should be lubricated regular.
  • 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.
  • Start using again after long time idling, please make testing after preheating the electrical components.
  • The eyepiece must be calibrated to zero for the first time using. No need do zero calibration in subsequent testing.
  • 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.
  • The storage and using of the reading microscope should avoid dust, damp and corrosive gas environment;
  • 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.
  • Don’t disassemble the instrument without authorization, maintenance related matter, please contact MITECH after-sale service department with 4000600280.

Specifications MITECH MHB-3000 Electronic Brinell Hardness Tester :

The power series 612.5N(62.5kgf)、980N(100kgf)、1225N(125kgf)、1837.5N(187.5kgf)、 2450N(250kgf)、4900N(500kgf)、7350N(750k
Testing Force Application Mode Automatic (loading, holding, unloading)
Indenter objective lens conversion mode manual operation
display usage LED eight digital tube display
Microocular magnification 20X
Test force holding time 5~60s
Minimum division 0.005 mm
Max sample heigh 220mm
Max distance from head to body 270mm
Voltage AC 220V/50Hz
Size 753×550×236 mm
Total Weight 123 kg

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