Carbide Indenter Material Rockwell Hardness Machine , Easy Operation Steel Hardness Tester MHR-150A

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MITECH MHR-150A Manual Rockwell Hardness Tester can test materials in laboratory Digital Hardness Tester Introduction of Manual Rockwell Hardness Tester Mitech MHR-150A Manual Rockwell Hardness Tester, based on the principle that Carbide indenter presses the surface of the sample to produce indentation.By measuring the depth of the indentation to achieve the measurement of the hardness of the material can be processed for the finished product or semi-finished products for piecewise detection for a variety of metal and non-metallic materials, parts and components of high precision hardness test. According to statistics, Rockwell hardness test is the most widely used metal processing industry hardness test method, the use rate accounted for more than 70%. The measurement can be directly displayed by the instruction table, easy to read, simple operation, is widely used in metal processing and manufacturing industry quality control links.All kinds of metal materials failure analysis, tertiary research and other fields, is the determination of metal materials Rockwell hardness of the precision detection equipment. Indication error - - - - Scale | Standard Hardness Range | Allowed tolerance | HRA | 20-75HRA | 2HRA | 75-88HRA | 1.5HRA | HRB | 20-45HRB | 4HRB | 45-80HRB | 3HRB | 80-100HRB | 2HRB | HRC | 20-70HRC | 1.5HRC | HRD | 40-70HRD | 2HRD | 70-77HRD | 1.5HRD | HRE | 70-90HRE | 2.5HRE | 90-100HRE | 2HRE | HRF | 60-90HRF | 3HRF | 90-100HRF | 2HRF | HRG | 30-50HRG | 6HRG | 50-75HRG | 4.5HRG | 75-94HRG | 3HRG | HRH | 80-100HRH | 2HRH | HRK | 40-60HRK | 4HRK | 60-80HRK | 3HRK | 80-100HRK | 2HRK | HRL | 100-120HRL | 1.2HRL | HRM | 85-110HRM | 1.5HRM | HRR | 114-125HRR | 1.2HRR | - - - - Feautures # Suitable for measuring the surface is more rough cast iron, steel and other non-homogeneous specimen Brinell hardness; # The control part is the closed-loop control system, which can dynamically reflect real load changes. # The device is of great reliability, easy to operate.Innovative design, high accuracy. # Indenter material is carbide, the material has a high hardness, wear resistance, strength and toughness, heat, corrosion and other excellent performance, which makes the spherical head high wear resistance and stable,can reduce measurement error greatly. # The human operation of the measurement results less impact, as well as workpiece surface. # Support Brinell, Rockwell, Vickers and other hardness standard conversion; # 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. Maintenance and care # In experiment, in order to ensure accuracy, you need to ensure between adjacent indentation centre and creasing center to the edge of the specimen distance is greater than 3 mm; # Normally, the first point is only used to offset the gap and the supporting surface without record test results, starting from the second statistical results; # Screw case is designed to protect the screw from dust invasion, idle or instrument test specimen height less than 100 mm, should be set on the outside of the screw. Greater than 100 mm specimen measurements, must take it out in normal use; # 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; # If the sample on the back and edges appear visible deformation traces, test results as invalid, should choose to head or test force test; # Test personnel should strictly abide by the operational procedures, often before and after the test, please use standard piece of proofreading instruments; # After the hardness test on the main test force, it is forbidden to turn the variable load the handwheel; # To pay attention to the palm in the move to ban have fallen, fixed, please measure before handling lever, Jordan farmar and boom; # When not in use for a long time should cover dust cover, in order to prevent dust into the machine interior, hardness block, ball head after using coated with anti-rust oil, prevent rust; # Regularly put a small amount of oil into the screw and handwheel interface ; # Conducted at least once a year instrument verification, to ensure the accuracy of the hardness tester.

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Mitech CO.,LTD.

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