Updated on 19 October, 2021
A Brinell hardness tester is a device that is used for measuring hardness or softness of a specific material. It is used for a variety of applications in industries ranging from aerospace, automotive and marine to power generation, oil and gas and for a variety of other industries. The device is very easy to use for users as it consists of a hand-held instrument that can be used on any metals that can be tested. Brinell hardness testers are available in different shapes and sizes and can be used for a variety of purposes.
When looking for a brinell hardness tester to evaluate the quality of raw materials, you should choose one that provides accurate results within a few seconds. Most testers will provide more than one reading, with the readings being combined to get an overall rating. This ensures that you will get accurate data that can be compared between different test samples. Brinell hardness testing uses two standard procedures for measuring the hardness of materials that include the use of a loading cell to determine the density of the material and then the Brinell hardness tester applies a series of tests to the sample using a variety of hand tools. Brinell hardness testing conditions usually have about 25 different load/unload combinations of testing enabling almost all metals to be tested for by means of Brinell testing by varying the load and test pressure according to the specific sample size and shape.
There are a variety of industries where Brinell hardness testing is most commonly used. One of the most common uses is the aerospace industry where aircraft are primarily made of metal. Metals like titanium, stainless steel and composites are also used. As metals are mostly used for aircraft, they require very precise hardening properties that cannot be achieved by normal mechanical hardness methods. This requires the use of special metals called super metals that exhibit unique properties that cannot be found anywhere else in nature. The extreme resistance to corrosion, increase in density and the extreme strength make these metals ideal for use as super metals.
Another application of Brinell hardness tester is in the industrial manufacturing industry where heavy-duty cast iron items are mainly used. Cast iron can withstand a tremendous amount of force without any significant damage. However, due to its nonferrous nature, it is also vulnerable to rust formation if subjected to water. Therefore, cast iron pieces require the use of a special kind of tester that not only measures the nonferrous properties of the metal but also the ability of the material to withstand corrosion.
When you are buying a Brinell hardness tester, it is essential to check whether it uses automatic testing or not. Some of the testers available in the market have both mechanical and electronic testing facilities. Others simply have one primary function and that is to measure the hardness. Hence, you need to decide whether your requirements require the presence of both kinds of testing.
Most often, people buy Brinell hardness tester from manufacturers who produce nonferrous metals such as stainless steel. These companies produce high quality stainless steels that are hardened using high heat treatments. In case you need a brinell hardness tester for casting heavy-duty hollow tubes or for casting solid nonferrous metals, it is advisable to purchase the product from a manufacturer who deals with castings. In most cases, manufacturers also have a facility that allows customers to send their castings to them for hardening. This helps them save money on the production costs.
Before purchasing a Brinell hardness tester, you need to make sure that you are buying an instrument that has a sufficiently good measuring range. The range of the device must be calibrated and the current reading must be consistent. A poorly calibrated measuring range results in inaccurate measurement of the hardness of the metal materials that have been tested. It also leads to inaccurate reading of the load condition. Hence, you should only buy a Brinell that comes with a calibration device. In addition, you also need to check the availability of the spare parts.
There are three common Brinell hardness testing methods available in the market today. They are the wet test methods, dry powder techniques and the carbide ball methods. You can choose a Brinell hardness tester according to your needs. Most often, people prefer the wet and dry powder techniques because they can provide more detailed and accurate results. Also, they are easier to use than the other two methods.