Portable Hardness Testing Instrument

Portable Hardness Testing Instrument is developed to meet the demands of a light weight instrument which can be used to carry out tests by a universally recognized method of hardness testing. Rockwell Method : This hardness tester can be used in variety of application and is readily adjustable to a wide range of sizes and shapes which are difficult to test in a standard table model hardness tester. The machine is designed for carrying out Rockwell tests comparable to table model hardness tester because, the basic things, such as shape of penetrator, method of penetration, measurement and loads are same in both systems. The diagram on the second page of the catalogue gives the general arrangement of the hardness tester. The system carries a weigh bar (8) pivoted at central point. When the load is applied by the loading screw (9), at one end of this weigh bar, it is deflected and the other end of this bar carrying penetrator forces down into the test specimen. This deflection of weigh bar which is proportional to the applied load is indicated on the loading dial indicator (11). Besides this loading dial indicator, there is one penetration measuring indicator (14) which measures the actual penetration of the penetrator into the test specimen. The hardness value of the specimen is read directly on this indicator. The frame carries two adjusting screws and a gear train. By rotating the knurled knob the distance between the penetrator and the support-anvil can be adjusted.