Miroslav Duspara

New Approach of Recycling of Abrasives for Water Jet Cutting

The recycling or reuse of material in production becomes as a saving task for sustainable and environmental competitive production. Sustainability means not only achieving cost efficient process but also eco efficient. The design of the abrasive recycling system is desirable because of the growing growth and development of the abrasive water jet cutting industry. The use of recycled abrasives greatly reduces production costs, and hence the price of products resulting from such processing and increases competitiveness. There is a large space for wide application of cutting technology with abrasive water jet, and thus the application of abrasive recycling. On the environmental side it is very important to have a controlled disposal of the abrasive used.

Bending accuracy of the HC260Y steel in different V-tool configurations

The automobile chassis is produced from various metal formed parts that are welded together. Trends in the automobile industry show that most of the car manufacturers tend to use high strength, lightweight materials. The main reasons for this are minimization of the used material and better fuel economy of the produced cars. Such lightweight materials often have high strength which causes large amounts of elastic unloading (springback) after sheet metal forming operations. Mostly used sheet metal forming process is the bending process, where the elastic springback can be severe thus diminishing the desired accuracy of the part. In this paper, the comparison between mathematical models, FEM method and experiments is shown, and the effects of V-tool bending process parameters can be seen on the resulting sheet angle of the HC260Y steel.

Optimization of cutting process of AISI 316 L corrosion resistant steel with hydro abrasive jet

Suvremeni tehnoloski razvoj karakterizira pronalazak velikog broja novih i naprednih materijala za koje je obrada standardnim postupcima koji trenutno prevladavaju u industriji s tehnickog i ekonomskog stajalista cesto tesko izvodiva. Zbog nemogucnosti ispunjavanja svih zahtjeva suvremene tehnologije sve je znacajnija primjena nekonvencionalnih postupaka obrade poput hidro abrazivnog rezanja. Clanak se fokusira na provjeru teze mogu li se standardni postupci poput glodanja zamijeniti nekonvencionalnim postupkom hidro abrazivnog rezanja uz zadržavanje zahtijevane kvalitete obrađivane povrsine. Ukoliko se teza prihvaca, potrebno je odrediti maksimalnu dubinu rezanja do koje je moguce ostvariti traženu kvalitetu povrsine uz minimalni utrosak resursa.