TOLERANCES FOR LENGTHS, ANGLES, SHAPE AND POSITIONS FOR ERLDED CONSTRUCTIONS ACCORDING TO HRN EN ISO 13920

Diplomski rad je utemeljen na raspoloživoj literaturi. Sadrži opis kontrole i osiguranja kvalitete zavara i zavarenih konstrukcija, metoda kontrole kvalitete bez razaranja, metoda kontrole kvalitete s razaranjem, općih tolerancija za zavarenu konstrukciju te karakteristika mjerne i kontrolne opreme. Poseban naglasak stavljen je na tolerancije duljina, kutova, oblika i položaja kod zavarenih konstrukcija prema normi HRN EN ISO 13920. Objašnjeni su uređaji koji se koriste za ispitivanje i mjerenje tolerancija, definirani su postupci mjerenja pravocrtnosti, ravnosti i paralelnosti te su dane vrijednosti raspona nazivnih veličina za tolerancije duljinskih izmjera, tolerancije kutnih izmjera i za tolerancije pravocrtnosti, ravnosti i paralelnosti. Također je detaljno objašnjena primjena mehaničkih uređaja za kontrolu i mjerenje duljina i kutova.The paper is based upon the available literature. It consists of the description of the control and quality assurance of welds and welded constructions, non-destructive quality control methods, destructive quality control methods, general tolerances for welded constructions and the characteristics of measuring and control equipment. Special emphasis is placed upon tolerances for lengths, angles, shape and position for welded constructions according to the HRN EN ISO 13920 standard. Devices used for testing and measuring tolerances are explained, the procedures for measuring straightness, flatness and parallelism are defined and the range of nominal sizes for tolerances for linear dimensions, tolerances for angular dimensions and straightness, flatness and parallelism tolerances are listed as well. The application of the mechanical devices for control and measurement of lengths and angles is also explained in detail