Metra Blansko (Czechia)

The paper presents a process of industrial fabrication of 227 mm calibre frames made of 15HGMVŻ grade lowcarbon steel. Influence of production technology parameters such as the state of material before forming and the degree of deformation during the forming on mechanical properties of frames was established. Optimal material properties after thermal improvement, and levels of deformation at a rotary forming process needed for getting the specific characteristics of final frames were indicated. The hardness across the frame wall was identified and the micro-structure was studied. Received results of tests indicate on correctness of the frame production process regarding the selection of parameters for thermal improvement and rates of deformation.

In the paper is presented a short overview of the RFID technology and its applications, realized in the UHF band. First, main problems of this technology are mentioned, then the newly developed antenna for RFID applications is introduced and the main types of RFID applications and its special problems are presented.