PL
 |
EN
Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 7

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available The mechanism of the surface alloy layer creation for cast steel
100%
Walasek A. , Szajnar J.
|
|
tom Vol. 12, iss. 1
115-118
EN
The paper presents a detailed description of the process of creation of a surface alloy layer (using high-carbon ferrochromium) on the cast steel casting. The mechanism of the surface alloy layer is based on the known theories [5,6]. The proposed course of formation of the layers has been extended to decarburization stage of steel. The research included proving the presence of carbon-lean zone. The experiment included the analysis of the distribution of elements and microhardness measurement.
2
Content available The Mechanism of the Surface Alloy Layer Creation for Cast Steel
100%
Walasek A. , Szajnar J.
Archives of Foundry Engineering
|
2012
|
nr 1
3
Content available remote The influence of the size of ferrochromium grain on the surface composite layer forming process
80%
Szajnar J. , Baron C. , Walasek A.
|
|
tom Vol. 10, iss. 1
191-198
EN
The aim of the researches was to determine the influence of the size of high - carbon ferrochromium grain (which was used to make the pad) on the quality of the composite layer on the steel cast. This kind of cast was obtain by pouring the mould with the pad placed on the chosen surface with liquid metal. As thick as possible composite layer without any defects and discontinuity was required. Both good quality and required thickness of surface composite layer depend on many factors. The pouring temperature, module of cast solidification, size and shape of the cast are the most important ones. The suitable graininess of pad material is also significant parameter. The conducted researches allowed to take the suitable graininess of the pad material which improved the quality of the surface composite layer.
4
Content available Castings Dimensions Influence on the Alloyed Layer Thickness
80%
Szajnar J. , Baron C. , Walasek A.
|
2014
|
tom Vol. 14, iss. 1
107--112
EN
The paper presents the results of simulation of alloy layer formation process on the model casting. The first aim of this study was to determine the influence of the location of the heat center on alloy layer’s thickness with the use of computer simulation. The second aim of this study was to predict the thickness of the layer. For changes of technological parameters, the distribution of temperature in the model casting and temperature changes in the characteristic points of the casting were found for established changes of technological parameters. Numerical calculations were performed using programs NovaFlow&Solid. The process of obtaining the alloy layer with good quality and proper thickness depends on: pouring temperature, time of premould hold at the temperature above 1300oC. The obtained results of simulation were loaded to authorial program Preforma 1.1 in order to determine the predicted thickness of the alloy casting.
5
Content available remote Influence of insert granularity and pouring temperature on the thickness of surface alloy layer
80%
Szajnar J. , Bartocha D. , Baron C. , Walasek A.
|
2011
|
tom Vol. 11, iss. 1
99-104
EN
In the paper the characteristic of the surface alloy layers on cast steel castings is presented. The assumptions for the simulation with the use of FLUENT software were worked out on the basis of the mechanisms known from the previous researches. The contact geometry (of preform and cast steel) and boundary conditions similar to the technological conditions were determined. The simulation was carried out for three pouring temperatures. The results of the simulations and the conclusions were presented. The real examinations for the same technological parameters were carried out to verify the calculations. The obtained results were compared.
6
Content available Castings Dimensions Influence on the Alloyed Layer Thickness
80%
Szajnar J. , Baron C. , Walasek A.
|
|
nr 1
7
Content available Tribological and Corrosive Properties of the Parts of Machines with Surface Alloy Layer
70%
Szajnar J. , Walasek A. , Baron C.
|
|
nr 3
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.