Thermal effects on metals at plasma cutting

The submitted article describes the effects of a thermal separation of material on the properties of the surface layers. The separation of material is an integral part of a preparation of all final products. During cutting the surface layer of the separated material is effected, which then has an influence on the sequence of the following operations. The method of thermal separation of material was selected for the experiment described in the article a method of plasma cutting. The material selected for the method was a common steel ČSN 411 373, which is industrially produced and processed. The effect on the material was shown by measuring micro-hardness using the micro-hardness tester DM 2D

Thermal effects on steels at flame cutting

The submitted article describes the effects of a thermal separation of material on the properties of the surface layers. The separation of material is an integral part of a preparation of all final products. During cutting the surface layer of the separated material is effected, which then has an influence on the sequence of the following operations. The method of thermal separation of material was selected for the experiment described in the article a method of flame cutting. The material selected for the method was a common steel ČSN 411373, which is industrially produced and processed. The effect on the material was shown by measuring micro-hardness using the micro-hardness tester DM 2D

Apparatus for continuous environment-friendly removal of harmful organisms from electrically non-conducting materials

Technické řešení se týká zařízení ke kontinuálnímu ekologicky šetrnému odstraňování škodlivých organizmů z elektricky nevodivých materiálů, zejména pak desinfekci a desinsekci těchto materiálů bez použití chemických prostředků, příp. jejich sterilizaci bez použití zatěžujícího kontaktního ohřevu. Relativně jednoduché a univerzální použití, nezatěžuje životní prostředí.Technical solution involves ecological device and technology that allow you to manage continuous and ecological removing of harmful organisms from electrically non-conductive materials, above all desinfection, desinsection of those materials without using chemical means, eventually their sterilization without usage of burdensome contact heating. Relatively simple and universal usage, ecologically friendly

Dual shooting and evaluation of high-speed phenomena

The article describes the problem of dual shooting and evaluation of high-speed time varying phenomena using high-speed camera systems. It describes necessary steps for the preparation of shooting and how to set up the electronic shutter and also focuses on the processes of calibration and final evaluation of the high-speed phenomena. Dual shooting of high-speed phenomena is very modern while still remaining quite an unexplored field and is at present subject of a research at the Institute of Production Engineering UTB in Zlin. The published processes particularly for the Chip-Chunk test are brand new and at currently being patented in the Czech republic

Fluidity of thermoplastics elastomers

Polymer injection molding is the most used technology of polymer processing nowadays. It enables the manufacture offinal products, which do not require any further operations. Working of shaping cavities is the major problem involving not only the cavity of the mold itself, giving the shape and dimensions of the future product, but also the flow pathway (runners) leading the polymer melt to the separate cavities. The runner may be very complex and in most cases takes up to 40% volume of the product itself (shape cavity). This work gives the results of studying the influence of the quality of flow pathway surface and influences of other technological parameters on the polymer melt flow