Abstract
This article provides an information about the production of reference hardness measurements on the Brinell scales (type MTB-K), Rockwell A, B, C (type MTR-K), Superficial Rockwell N and T (type MTSD-K), brief information about the state of production of hardness measures in the world and the research conducted at this institute in the development and improvement of manufacturing technology.The physical and chemical properties of the studied measuring instruments are given.Hardness measures are intended for setting, calibration or verification according to standardized hardness scales of stationary and portable hardness measuring instruments, for example, software.Reference hardness measures are manufactured in accordance with GOST 9031-75 «Exemplary hardness measures.Specifications» made of carbon and alloy steels, passing through the stages of mechanical and heat treatment, have a rectangular, triangular or round shape.Reference hardness measures in accordance with the law «On Ensuring the uniformity of measurements in the Republic of Kazakhstan» are calibrated.Primary and periodic verification of hardness measurements is carried out by the bodies of the metrological service accredited for the right to verify hardness measuring instruments.The verification interval is 2 years in accordance with the interstate standard GOST 8.335-2004 «Standard hardness measures.Verification method».