The possibility of using die steels (4Kh3N5М3F and 4Kh4N5М4F2) with adjustable austenitic transformation during operation for a wide range operating temperatures (below the critical point A 1 above 3 ) is shown hot deformation M1 copper (up to 630 °С) МNZh5-1 copper-nickel alloy (900-950 °C) increased service life. During МNZh5-1, life matrices made steel 4Kh3N5М3F was increased, compared 3Kh3М...

-A broad-band acoustic emission detection system has been used to record the transient surface displacements due to the release of elastic waves during deformation and fracture of EN3OA. a low-alloy steel. Acoustic emission signals were recorded from material tested in the quenched, tempered and temper-embrittled conditions: Tests were also performed upon material which had been hydrogen charge...

The paper presents how application of agents can improve scalability of domain decomposition (DD) based parallel codes, where the optimal load balance for some components of the code cannot be achieved only by partitioning computational domain. The limitation of the DD paradigm, where some highly overloaded pieces of domain cannot be partitioned into smaller sub-domains can be effectively overc...

The purpose of this study was to evaluate the accuracy of the respective dies after polyether elastomeric procedure in the presence or absence of cervical contact of the acrylic resin shell with the cervical region, establishing a comparison to dies obtained with stock trays. This study consisted of three groups with 10 specimens each: 1) acrylic copings without cervical contact, (cn); 2) acryl...

The correct selection of manufacturing conditions is one of the most important aspects to take into consideration in the majority of manufacturing processes and, particularly, in processes related to Electrical Discharge Machining (EDM). It is a capable of machining geometrically complex or hard material components, that are precise and difficult-to-machine such as heat treated tool steels, com...

There are a wide range of physical defects which occur during metal forming processes. These defects, which may occur on the surface or be internal, are undesirable not only because of the surface appearance, but because they may adversely affect the strength, formability and other manufacturing characteristics of the material. Some physical defects in metal forming processes such as rolling an...

K. Grzybowska, Poznan University of Technology, Faculty of Engineering Management, Poznan, Poland B. Gajdzik, The Silesian University of Technology, Faculty of Materials Science and Metallurgy, Katowice, Poland Fast equipment setup in a machine on production line is the key precondition to increase the fl exibility of the production. Methodology of SMED (Single Minute Exchange of Die) is an exa...

Laser flexible shock micro-bulging (LFSB) is a novel micro fabrication technology, which combines laser dynamic forming and flexible die forming, which is a type of high strain rate micro-forming. The LFSB of 304 stainless steel foils was investigated in this paper. Experimental and simulated results indicated that the bulging depth and thickness thinning rate of bulging parts increased with an...