How Does a Rockwell Hardness Tester Work?

rockwell hardness tester

The Rockwell hardness tester uses a conical diamond commonly known as brale or a steel ball. It shows the strength of substances by measuring the depth or penetration of the load or the indenter. The measured depth is relative to the depth of an initial load; the depth of the load shows on a dial. The tester is common in the test of hardened steel used in metalworking plants. It is ideal for thin sections and small parts. Its calibration follows the specifications of the American Society of Testing Materials.

rockwell hardness tester

Features of the Tester

To measure accurately, the Rockwell hardness tester features a special closed-loop electronic force system with advanced in-line depth measuring technology. The unit works with a single button press. It features an LCD control panel for easy method set up and configuration. Users can choose one of two sizes of the hardness tester based on the application. It is available in 10 and 14 inches vertical testing capacities to facilitate measuring of different sample sizes. It is also offered in three variations including Rockwell superficial, regular, and twin hardness scales. These variations make the unit ideal for different applications.

rockwell hardness tester

Rockwell hardness testing has different advantages including the fact that it is fast, inexpensive, and does not destroy the material tested. After the test, it only leaves a small indentation on the material. The test provide details such as tensile strength, ductility, and wear resistance; all qualities which can help in material selection and quality control. It is applicable in different testing environments from oily to hot.

Usenet

Are you looking for a platform to share news worldwide? Usenet is a form of a network whose primary purpose is the exchange of news. Usually, users submit information on the network, which is shared worldwide, and other users can access it freely. It consists of many servers, each serving a particular group called a newsgroup. The users are clustered into these groups. Further, these servers are interconnected to enable the transfer of information between them.

Available servers

usenet

Sharing information on Usenet is free. However, users have to subscribe to various servers at a fee, depending on their needs and preferences. There are many servers available, and a few are listed below;

Newshosting

Usenetsever

Easynews

Eweka

Tweaknew

Most browsers, especially from Microsoft and Netscape, support Usenet and enable access to your select newsgroups. When it comes to the web, Google provides a directory towards newsgroups and even a search approach that allows easier access. Registration is also another way of accessing newsgroups via the internet with the advantage of receiving notifications whenever certain information is shared.

If you are looking for a suitable server, any of those listed above have proven useful to most users. Browsers with enabled access make your work even easier.