Ensuring the required quality of castings is an important part of the production process. The quality control should be carried out in a fast
and accurate way. These requirements can be met by the use of an optical measuring system installed on the arm of an industrial robot. In
the article a methodology for assessing the quality of robotic measurement system to control certain feature of the casting, based on the
analysis of repeatability and reproducibility is presented. It was shown that industrial robots equipped with optical measuring systems have
the accuracy allowing their use in the process of dimensional control of castings manufactured by lost-wax process, permanent-mould
casting, and pressure die-casting.
This article presents the results of investigations of the effect of heat treatment temperature on the content of the carbide phase of HS3-1-2
and HS6-5-2 low-alloy high-speed steel. Analysis of the phase composition of carbides is carried out using the diffraction method. It is
determined that with increasing austenitising temperature, the intensification of dissolution of M6C carbide increases. As a result, an
increase in the grain size of the austenite and the amount of retained austenite causes a significant reduction in the hardness of hardened
steel HS3-1-2 to be observed. The results of diffraction investigations showed that M7C3 carbides containing mainly Cr and Fe carbides
and M6C carbides containing mainly Mo and W carbides are dissolved during austenitisation. During austenitisation of HS3-1-2 steel, the
silicon is transferred from the matrix to carbides, thus replacing carbide-forming elements. An increase in a degree of tempering leads to
intensification of carbide separation and this process reduce the grindability of tested steels.