The complete and meaningful designation is therefore expressed as. Pdf brinell hardness test determination of hardness of. It is the unique portable hardness tester in the world which applies test condition with 3000kg test force on a 10mm carbide indenter. Micro hardness tester with convenient 12 touch screen display. Hardness testers in this category utilize traditional benchtop methods to measure the effective hardness of a variety of materials using a variety of hardness scales. The many methods regularly practiced in hardness determination of metals range from loads starting from grams in micro hardness. Brinell metal hardness tester portable brinell tester. The average of two readings of the diameter of the impression at right angles are taken and mathematically calculated to a hardness value. Unlike with rockwell testing, brinell tests measure the diameter of the indentation made by the ball, not the depth. A 10mm ball with an applied load of 3,000 kgf is most common for brinell testing. Brinell hardness test hardness chemical substances scribd. The user should check carefully that the packaging is in good condition when receiving the tester.
Hardness testers in this category utilize traditional benchtop methods measure the effective hardness of a. The oldest of the hardness test methods in common use on engineering materials today is the brinell hardness test. Experts in hardness testers and hardness test equipment including rockwell, brinell and microhardness testers, optical systems and software. The hardness of the specimen will be determined from the brinell hardness number. The brinell hardness test method consists of indenting the test material with a 10 mm diameter hardened steel or carbide ball subjected to a load of 3000 kg. King portable brinell hardness tester is the finest portable hardness tester in the world.
Brinell hardness number bhn is obtained by the ratio of the calculated load and the spherical area of the indentation or impression made on the specimen by the corresponding indentor ball. Pdf brinell hardness test determination of hardness of steel and. Jan 17, 2017 hardness is the mechanical property of the material which helps him in resisting the plastic deformation of the material. Brinell hardness tester computerized brinell hardness. Newage 9000n series automatic brinell testing system specification sheet ssab90000310 march 2010 the newage 9000n series makes a brinell impression in conformance with the standard method for brinell testing as described in astm e10. Relatively high loads are applied to parts via a tungsten carbide ball in this method. Direct and accurate measurement of brinell hardness number using state of the art image processing technology. The measuring range of hardness is 8450 hbs when steel ball indenter is used, and. The brinell conversion chart is then used to convert the average diameter of the indentation made to the corresponding brinell hardness value.
Sep 04, 2017 on the market for over 80 years, the king portable brinell tester is lightweight, easy to maneuver and require only one operator, making them ideal for use as portable units. The tester may be used on most metals and is particularly suitable for testing nonuniform materials. In the brinell hardness test, an optical method, the size of indentation left by the indenter is measured. For metallurgists, hardness testing is a collection of different methods for measuring a definite characteristic of metallic materials, namely. The tester is used for determining the brinell hardness of unquenched steel, castiron, nonferrous metals and soft bearing alloys. Brinell testers apply up to 3000 kg 6600 lb force to the indenter. A brinell hardness testing machine makes an indentation in a material, the resulting impression, the permanent width of indentation, is measured across at least two diameters. The brinell method of hardness testing comes with few drawbacks also. Pdf mechanical hardness testing is fundamental in the evaluation of the mechanical properties of metallic materials due to the fact that the hardness.
This test is often used to determine the hardness of castings and forgings whose grain structure is too course for accurate rockwell or vickers testing. The brinell test uses a desktop machine to apply a specified load to a hardened sphere of a specified diameter. The brinell test basically introduced the production phase of indentation hardness testing and opened the way for further indentation tests that were more relevant to material types. Hardness is the mechanical property of the material which helps him in resisting the plastic deformation of the material. The rugged swissmade metal ndt hardness testers are designed for portable hardness testing in the lab, in the workshop, at production facilities or on site. Universal testing machine, hardness testing machine. The brinell hardness test generally uses a steel ball 10 mm diameter which is pressed into the surface under a load of 30 kn. On the market for over 80 years, the king portable brinell tester is lightweight, easy to maneuver and require only one operator, making them ideal for. This tester can be used in metallurgical plants, machine manufacturing plants, metal working plants, industrial laboratories, and laboratory environments.
Nov 24, 2018 since brinell hardness is a mechanical property, it also relates to the materials resistance to wear as well as plastic or permanent deformation, and the materials ability to indent or abrade another material. Brinell hardness number load curved surface area of the indentation. King brinell tester pdf rockwell hardness tester, brinell. Since brinell hardness is a mechanical property, it also relates to the materials resistance to wear as well as plastic or permanent deformation, and the materials ability to indent or abrade another material. For added stability when performing flat work, a slipon base adapter is included. Rockwell hardness tester presents direct reading of hardness number on a dial provided with the mc.
Jan 31, 2018 the average of two readings of the diameter of the impression at right angles are taken and mathematically calculated to a hardness value. To determine the brinell hardness of the given test specimen. Newage 9000n series ssab90000310 automatic brinell. In contrast to the likewise optical vickers method,which involves a pyramidshaped indenter being pressed into a specimen, the brinell method uses a spherical indenter. It is free of the problem of oil leak of the hydraulic system and gear jamming of the jacking system, so it has a higher cost performance. The operator must make certain the test specimen is sitting in a stable position on the anvil prior to applying load to the test specimen. A well structured brinell hardness number reveals the test conditions, and looks like this, 75 hb 1050030 which means that a brinell hardness of 75 was obtained using a 10mm diameter. This video outlines how a brinell hardness test is conducted, as well as explaining how to calculate a value for the brinell hardness using. King tester corporation hardness testing since 1936.
Indentation hardness a number related to the area or to the depth of the impression made by an indenter or fixed geometry under a known fixed load. This rapidly became known as the brinell test and became universally used in the metalworking industry. Though loads of 500, 1500, 2000, 2500, and 3000 n are available in a typical brinell hardness tester, a load of 500 n is used for testing relatively soft metals such as copper and aluminium alloys, while the 3000 n load is often used for testing harder materials such as steels and cast irons. The rockwell hardness is based on difference of indentation depth of indenter from two different load applications. Using the conversion charts, the brinell hardness value can also be converted into the corresponding tensile strength. It is pressed into the specimen to make the indent in the specimen by applying load. The brinell hardness test uses a desk top machine to press a 10mm diameter, hardened steel ball into the surface of the test specimen. What is the difference between brinell and rockwell hardness. Phe33000 portable brinell hardness tester has the same structure as king brinell hardness tester. King portable brinell hardness tester packing and transportation king brinell portable hardness tester is a mechanical instrument which will be damaged by any carelessness caused by packing and transportation. Learn how to use brinell hardness test units and testing machines to quickly and accurately assess large samples with a coarse or inhomogeneous grain structure with knowledge and insight from struers, the worlds leading materialographic and metallographic experts. P load on the indenting tool kg d diameter of steel ball mm d measure diameter at the rim of the impression mm it is desirable that the test load are limited to a impression diameter in the range of 2.
In contrast to the likewise optical vickers method,which involves a pyramidshaped indenter being pressed into a specimen, the brinell method uses a spherical indenter the larger the indent left in the surface of a workpiece specimen by the brinell indenter with a defined ball. Manual universal hardness tester has stable and reliable performance, able to meet rockwell, small load brinell and vickers hardness test requirement, its convenient for the user to do hardness testing of a variety. Brinell hardness test basic principle and practical procedure of the brinell hardness test testing machine test piece spherical page. Fully computerized pc based brinell hardness tester. The brinell hardness number is obtained by dividing the load, in kilograms, by read more. The portable brinell hardness tester telebrineller system is a major achievement in quality assurance. The hardness measurements are made by using the dynamic rebound testing method according to leeb, the static portable rockwell hardness test and the ultrasonic contact impedance uci method. One of the most popular hardness testing methods, brinell hardness number is obtained using a perfectly spherical hardened steel ball of 10 mm pressed against the test surface using a static force of 3000 kg 29.
The many methods regularly practiced in hardness determination of metals range from loads starting from grams in micro hardness testing up to 3,000 kgf for brinell testing of heavy castings. We use our king portable testers on a daily basis in 100 degree heat and freezing cold temperatures at many different angles, even upside down, and the quality and reliability is unmatched. Brinell hardness test method indentec hardness testing. Using a hardened steel ball fixed unto a brinell hardness test machine demonstrated in the experimental setup diagram. For example, for steels uts can be roughly estimated from brinell hardness as follows. The impression made with the 9000n series is measured based on the the depth of the indentation as described in astm e103. The large indentation resulted by the tester can reflect the average value of combined. Please read this instruction manual carefully and follow all installation, operating and safety guidelines. Affri produces universal hardness testing machines to have all scales rockwell, brinell, vickers and more on one single hardness tester. Find the hardness tester you need and request a free quote today. I find it amazing that a device originally designed and patented in 1936 is still the mainstay of hardness testing for most shops. For softer materials the load can be reduced to 1500 kg or 500 kg to avoid excessive indentation. Brinell, a swedish engineer, presented a paper to the swedish society of technologists describing his ball test.
Among many types of materials testing methods, hardness testing is one of the most popular, reliable and yet diversified methods. Brinell hardness tester our product range includes a wide range of computerized brinell hardness tester, rockwell cum brinell hardness tester, manual brinell hardness tester rb 3000 j, optical brinell hardness tester rb 3000 o and hydraulic brinell hardness tester rb 3000 h. Special and specific hardness instruments to test gears, rolled steel, bars, metal plates, coils, valves, tubes, aluminum profiles, motors, engines, forged products, shafts, bearings, bottles and more. Pdf mechanical properties of materials find, read and cite all the research you need on researchgate. Portable brinell hardness tester telebrineller system.
Indentation hardness is not a fundamental property of a. Indentec hardness testing machines limited, west midlands, dy9 8hx indentec hardness testing the brinell hardness test the brinell hardness test method consists of indenting the test material with a tungsten carbide ball of either 1, 2. Brinell hardness number table can simplify the determination of the brinell hardness. The indentation results reflect the hardness of the material. I find it amazing that a device originally designed and patented in 1936 is. Fundamentals of rockwell hardness testing like the brinell, vickers, knoop, scleroscope and leeb tests all of which fall in the general category of indentation hardness tests the rockwell test is a measure of the resistance of material, specifically metals, to permanent indentation. Pdf brinell and vickers hardness measurement using image. Plastics deformation can be form the starching, compression or due to indentation of any object in the work piece. It has become, by far, the most popular hardness test in use today, mainly because it overcomes the limitations of the brinell test. It tests up to 3000kg of test force using a 10mm carbide ball indenter. The principle of the brinell hardness test is that the hardened steel ball is used as the indenter.
In the late 19th century, more attention was paid to hardness and its measurement. Now you can measure brinell hardness anywhere in the field, in the plant or in the lab simple, certain operation under all conditions. Brinell tester is setup to test at 3000 kg, but other loads of 187. Brinell hardness test determination of hardness of steel and aluminum.
Brinell hardness is determined by forcing a hardened steel or carbide ball of known diameter under a known load into a surface and measuring the diameter of the indentation with a microscope. The brn3000 brinell hardness tester has a load ranging from 62. The brinell hardness test is the oldest method of hardness testing commonly used today. Equotip portable hardness testers, metal hardness testing. Brinell hardness tester 2 indenter printer primary load and height adjustment control panel anvil lcd display builtin ocular measurement power switch the brn3000 brinell hardness tester is a ball indenter designed to evaluate metallographic specimen hardness. Common indentors are made of hardened steel or diamond. Brinell hardness test is performed to find the hardness typically called the brinell hardness. The average diameter measurement can be converted to a brinell hardness number via the brinell formula or a conversion chart based on the formula. Hardness testing machines, systems and instruments for every hardness test application. King brinell testers are the only portable brinell tester on the market that is directly verifiable. E17004 078 1209 1 aech ko hardness testing special heat treatment, thin coating, surfacemodi. First minor load is applied to achieve zero level then major load is applied for specific period. Brinell metal hardness test heads offered by king tester allow you to test low pressure kgf or standard pressure 3000 kgf and different variations including the long ram brinell test head for easy access into recessed areas or over raised edges.
698 1299 712 812 503 1136 50 1038 385 1373 1131 1005 114 259 609 449 582 891 321 1067 208 825 608 1205 801 359 601 1434 959 949