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New portable hardness tester - brinell hadness tester
PORTABLE HARDNESS TESTER - POLDI HARDNESS TESTER
The hammer type Poldi Impact Hardness Tester is suitable for measuring the Brinell Hardness of steel, cast iron , brass aluminium, copper etc. This Poldi Hardness Tester is useful to test parts where bench type model is not useful. This type of machine is most ideal and simple for foundries, workshops , engineering colleges, technical institutions etc.
Principle: Load is applied by a hammer blow on the specimen and a standard test bar in linear direction through a hardened steel ball of 10 mm dia. The impact load on both is the same. The extent of indentation on the specimen and the test bar depends on their hardness. The two diameters of indentations on test bar and specimen are measured by a magnifier supplied alongwith the tester. The hardness of the specimen can be determined, by referring through the chart supplied with the machine.
10 mm dia , fixed in a special holder with a spring loaded plunger.
Each bar individually calibrated
Accuracy of measurement 0.05 mm
Comparison tables for finding hardness Separate Tables for Steel, Cast iron, Brass, Copper and Aluminium.
WE ALSO HAVE SPARE POLDI TEST BARS FOR SALE.
