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Light Weight: The complete Telebrineller system, in its case, weighs less than 10 pounds or 4.5 kg. Easily transported to any location, it is highly practical for all Brinell hardness testing needs.
Simple Operation: One hammer blow, measurement of the resulting impressions, and the manipulation of a basic equation on the computer provided- that's all. No special training required. In a few minutes, anyone can learn to determine BHN accurately.
Certified Accuracy: The test bars which are the core of this system are calibrated to a uniform hardness of ±3% of the labeled BHN. Hardness of the bars is measured by equipment whose accuracy is certified traceable to the National Standards Institute. The Telebrineller microscope is by Leica. Readings may be made within .05 millimeters.
Weatherproof: Designed for field use; there are no delicate adjustments or fragile components to be concerned with. All parts are rugged, solid, and able to deliver accurate measurements in all weather, under the roughest field conditions.
Principle of Operation
A test bar of known BHN, approximating the hardness of the specimen to be tested, is selected. Consistent accuracy is maintained when the test bar BHN is within 15% of the specimen BHN and is of the same general material. (Testing non-ferrous materials with carbon steel bars causes impact errors that must be compensated for by applying correction factors to the test results.) The test bar is inserted into the Telebrineller instrument and the instrument placed upon the specimen.
When the Telebrineller instrument is compete with test bar (1), the anvil (2), encased in a soft molded rubber head (3), rests on the test bar. The rubber head and a similar resting block (4), provide non-skid footing. Below the test bar, a steel impression ball (5), secured in the base of the head, is in contact with both the test bar and the specimen.
The anvil is struck sharply with a three to five-pound hammer. The impact, regardless of force, is transmitted equally to the test bar and, through the impression ball to the specimen metal (6), making impressions in both. The diameters of the resulting impressions are directly related to the respective hardnesses of the test bar and the specimen.
A spacing bar (7), operated by a spring catch and button, adjusts the test bar to a clear area for each test. By turning the bar to utilize the full length of all four faces, a total of 80 tests can be made with one bar.
Measuring Diameters: The bar is removed from the instrument and the Telebrineller Microscope positioned over the appropriate impression. The microscope provides a scale of 1/10 millimeter divisions and is designed so that the image and scale are bright and clear to the observer. A numbered division is aligned tangent to the impression and the diameter measured by the division that falls over the opposite tangent. Readings may be made easily and accurately within .05 millimeters. The impression in the specimen metal is measured in the same manner. Both measurements take just a few moments.
Determining BHN- The Brinell hardness of the specimen metal is determined quickly with a simple mathematical equation:
x (BHN of Test Bar) = BHN of specimen metal.
EXAMPLE: Assume the impression diameter of the test bar is measured to be 3.05; the impression diameter of the specimen metal, 3.15; and the labeled BHN of the bar is 352.
thus, the BHN of the specimen metal is 330.
This computation is simplified with the use of the Telebrineller Computer or any pocket calculator. Complete instructions are included in every Telebrineller system. Telebrineller replacement parts and test bars of hardness from 100 to 600 BHN are always available.
The Telebrineller system represents a significant milestone in quality assurance. Developed by Teleweld for its welding crews, the system is built on extensive metallurgical expertise backed by over fifty years of field experience. The Complete Kit, as depicted, provides all the necessary components for measuring Brinell hardness in various settings, whether in the field, plant, or laboratory.
The Telebrineller kit includes test bars calibrated to your chosen hardness level. These bars, the core of the system, are calibrated to a uniform hardness within a range of +- 2% of the labeled Brinell Hardness Number (BHN). The hardness of the bars is measured using precise equipment certified and traceable to the National Standards Institute.
The Telebrineller System is equipped with a robust microscope, flashlight, and batteries, all designed for field use. Every component is built to withstand rough conditions, with no delicate adjustments or fragile parts. The system is rock-solid, ensuring reliable and accurate measurements even in challenging environments.
The Telebrineller System is user-friendly, aided by the included computer, requiring no special training for operation. With a simple process of delivering one hammer blow, measuring the resulting impressions, and manipulating a basic equation on the provided computer, anyone can quickly and easily determine Brinell Hardness Number (BHN). The system ensures accurate results in just minutes, making it accessible to users with varying levels of experience.
The Telebrineller System includes a robust bar holder, designed for field use like every other component in the kit. The package includes detailed instructions on how to load and use the bar holder in conjunction with other items, ensuring accurate Brinell measurements right from the start.
The Telebrineller System includes a calculation pad to further support your success. This, like the entire system, has been developed by professional welding crews in the field. The system is built on proven metallurgical knowledge backed by over fifty years of field experience, ensuring reliability and accuracy in hardness measurements.
Part # |
Description |
Telebri100 |
TeleBrineller System Standard configuration includes the Main Unit, 5 bars of selected hardness, Microscope, Computer; Bar Holder; and Calculation Pad, all inside the Carrying Case. |
Optional |
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