Leeb hardness tester

The Leeb hardness tester is a kind of test equipment. The principle is that with the development of single-chip technology, in 1978, Dr. Leeb of Switzerland proposed a new method of measuring hardness. The basic principle is that it has a certain quality impact body. Under the action of a certain test force, the surface of the sample is impacted, and the impact velocity and the rebound velocity at 1 mm from the surface of the specimen are measured. The electromagnetic principle is used to induce a voltage proportional to the velocity.

Leeb hardness tester

1 [Start]
1.1 Insert the impact device (sensor) plug into the impact device socket of the instrument;
1.2 Press [On/Off] key, the power is turned on, the instrument enters the state to be measured, and the state of the material to be tested (carbon steel/cast iron/tool ​​steel/alloy steel, etc.) is selected.
2 [Load]
2.1 Push the loading sleeve down to lock the impact body to complete the loading.
2.2 Press the impact ring of the impact device on the surface of the specimen in the selected measuring direction. The direction of impact should be perpendicular to the test surface.
3 [Measurement]
3.1 Press the release button on the upper part of the impact device to measure. At this time, the sample, the impact device, and the operator are required to be stable, and the direction of the force should pass through the axis of the impact device.
3.2 Each test site of the sample is generally tested 3 times. take the average.
3.3 The distance between any two indentations or the distance between the center of any indentation and the edge of the specimen shall be not less than 3 mm.
4 [Read measurement value]
4.1 Use the average of multiple valid test points as a hardness test data.
5 [measuring part]
6 [Shutdown]
Press [On/Off] to shut down.
7【Measurement value result qualified judgment】
The measurement results are qualified in the range of 32-39HRC, and the bolts exceeding the range of 32-39HRC need to be replaced.

Leeb hardness tester

1, large-screen LCD dot matrix LCD, LED backlight display, compact and portable design, the body is only 312.5px;
2, seven kinds of impact devices do not need to be corrected for automatic identification, have good compatibility, and have a soft calibration function;
3. The upper and lower limits of hardness can be set in advance, and the alarm will be automatically exceeded.
4, large-capacity storage, up to 600 sets of data;
7. With USB interface, equipped with microcomputer software, it is more powerful after connecting with PC, which is convenient for customers to manage measurement data;
8. Support measurement of various hardness testers, instant display and conversion: Brinell (HB), Rockwell C (HRC), Rockwell A (HRA), Rockwell B (HRB), Vickers (HV), Shaw (HS)
9, the power supply is two AA (No. 5) batteries, can work continuously for more than 150 hours (without backlight), with automatic sleep, automatic shutdown and other power-saving functions;
10. It adopts the internationally popular fully enclosed aluminum alloy casing, which is ergonomically designed. The surface is sandblasted with stainless steel wire-blocking plate, which is corrosion-resistant and adds aesthetics and is durable. And has excellent resistance to electromagnetic, vibration and other interference.

Leeb hardness tester manufacturers

Beijing Times Ruiguang Technology Co., Ltd., as a professional enterprise engaged in instrumentation, mainly operates hundreds of products such as non-destructive testing instruments, physical and chemical measurement, and environmental protection equipment at home and abroad.
We focus on testing instruments for dozens of years, adhering to the "integrity-based, service-oriented, innovation-oriented, mutual benefit and win-win" spirit of enterprise, the implementation of "quality products, affordable prices, satisfactory service" business philosophy.
Over the past few years, we have won high praise from customers for our high quality and reliable products, affordable and reasonable price, timely and thoughtful service. We have won the trust and support of our customers. Our products are sold to major enterprises and research institutes all over the country, involving machinery, electricity, Hydraulic, metallurgical, petroleum, chemical, aerospace, nuclear industry and other fields.
The company's main products are: Leeb hardness tester, Rockwell hardness tester, Vickers hardness tester, Brinell hardness tester, Blowell hardness tester, Shore hardness tester, ultrasonic hardness tester, pencil hardness tester, Barth hardness tester , Wechs hardness tester, roughness tester, coating thickness gauge, ultrasonic thickness gauge, vibration meter, infrared thermometer, ultrasonic flaw detector, magnetic particle flaw detector, metallographic microscope, material testing machine, noise meter, temperature Hundreds of specifications, including hygrometer, anemometer, laser range finder, color difference meter, gloss meter, spark detector, adhesion tester, gas detector, buried pipeline detector, etc.

Leeb hardness tester works

The Leeb hardness tester is a device used for hardness testing. In 1978, the Swiss Dr. Leeb first proposed a new hardness test method. The basic principle is that the impact body with a certain mass impacts the surface of the sample under a certain test force, and measures the impact of the impact body at a distance of 1 mm from the surface of the sample. Speed ​​and rebound speed, using electromagnetic principle, to induce a voltage proportional to speed.
According to the principle of the Richter hardness tester, as long as the material has a certain rigidity, it can form a rebound, and the accurate Leeb hardness value can be measured. Since many materials have no corresponding conversion relationship with the hardness of other systems, the Leeb hardness tester currently only has a conversion table of 9 materials. The specific materials are as follows: steel and cast steel, alloy tool steel, gray cast iron, ductile iron, cast aluminum alloy, copper-zinc alloy, copper-tin alloy, pure copper, stainless copper.
In actual production, the metal materials used are various. Because the Leeb hardness tester is sensitive to the processing method of the material and the alloying element composition of the material, the hardness conversion table stored in the Leeb hardness tester chip cannot meet the needs of the user. In the test, the user can use the fitting software to make his own special hardness conversion table.

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