PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 8

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  odlew warstwowy
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available Designing of X46Cr13 Steel Heat Treatment in Condition of Casting Mould
Przyszlak Natalia, Piwowarski Grzegorz
Archives of Foundry Engineering
|
2023
|
Vol. 23, iss. 2
119--126
EN
The paper presents issues related to the technology of layered castings manufactured in the system: working part made of high-chromium steel X46Cr13 - base part made of gray cast iron with flake graphite, using the mould cavity preparation technology. Considering the high hardenability of the above-mentioned steel grade, the aim of the research was to optimize the casting parameters of gray cast iron in such a way that it would be possible to perform heat treatment of X46Cr13 steel directly in the casting mould. As part of the research, the geometry of the working and base parts of layered castings was selected, and guidelines for mould technology from the point of view of the moulding sand were developed. In order to control the cooling rate, three matrix of the moulding sand were used - quartz sand, chromite sand and silicon carbide, with the same granularity. The thermal conductivity coefficient of sands made on selected matrix, bound with synthetic resin in the ratio of 30:1, was experimentally determined. Then, the bimetal casting process in a given mass was simulated in the MagmaSoft® (ver. 5.4.1). The purpose of the simulation was to determine the maximum virtual temperature Tm in the thermal center of the outer surface of the X46Cr13 steel insert. From the point of view of the research purpose, the insert was expected to heat up to the austenitization temperature, i.e. at least 950°C.
2
Content available The quality of the joint between alloy steel and unalloyed cast steel in bimetallic layered castings
Wróbel T.
Archives of Foundry Engineering
|
2012
|
Vol. 12, iss. 1
119-124
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. ferritic-pearlitic unalloyed cast steel, whereas working part (layer) is plate of austenitic alloy steel sort X2CrNi 18-9. The ratio of thickness between bearing and working part is 8:1. The aim of paper was assessed the quality of the joint between bearing and working part in dependence of pouring temperature and carbon concentration in cast steel. The quality of the joint in bimetallic layered castings was evaluated on the basis of ultrasonic non-destructive testing, structure and microhardness researches.
3
Content available The influence of selected cast parameters on quality of joint in layered castings
Wróbel T., Cholewa M.
Archives of Foundry Engineering
|
2012
|
Vol. 12, iss. 2
105-110
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. unalloyed cast steel, whereas working part is plate of austenitic alloy steel sort X2CrNi 18-9. The ratio of thickness between bearing and working part is 8:1. The aim of paper was assessed the quality of the joint between bearing and working part in dependence of pouring temperature and carbon concentration in cast steel. The quality of the joint in bimetallic layered castings was evaluated on the basis of ultrasonic non-destructive testing, structure and microhardness researches.
4
Content available Odlewy bimetalowe z wysokochromową warstwą roboczą
Wróbel T., Szajnar J., Cholewa M., Wróbel P., Tenerowicz S.
Archives of Foundry Engineering
|
2012
|
Vol. 12, iss. 2s
87--90
PL
W prac przedstawiono technologię bimetalicznych odlewów warstwowych opartą na odlewniczej metodzie nakładania warstw bezpośrednio w procesie odlewania tzw. metodę preparowania wnęki formy. Wykonane tą metodą bimetaliczne odlewy warstwowe złożone są z dwóch zasadniczych elementów tj. części nośnej oraz części (warstwy) roboczej. Część nośną odlewu warstwowego stanowiło typowe tworzywo odlewnicze tj. żeliwo szare z grafitem płatkowym, natomiast część roboczą stanowiła stal stopowa ferrytyczna gatunku X6Cr 13 lub martenzytyczna gatunku X39Cr 13. Weryfikację wykonanych bimetalicznych odlewów warstwowych przeprowadzono w oparciu o nieniszczące badania ultradźwiękowe, badania metalograficzne makro- i mikroskopowe.
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. grey cast iron with flake graphite, whereas working part is plate of ferritic alloy steel sort X6Cr 13 or martensitic alloy steel sort X39Cr 13. The quality of the joint in bimetallic layered castings was evaluated on the basis of ultrasonic non-destructive testing, metallographic macro and microscopic researches.
5
Content available Odlewy bimetalowe z chromowo-nikolową[!] warstwą roboczą
Wróbel T., Szajnar M., Cholewa M., Wróbel P., Suchoń J., Tenerowicz S.
Archives of Foundry Engineering
|
2012
|
Vol. 12, iss. 2s
81--86
PL
W prac przedstawiono technologię bimetalicznych odlewów warstwowych opartą na odlewniczej metodzie nakładania warstw bezpośrednio w procesie odlewania tzw. metodę preparowania wnęki formy. Wykonane tą metodą bimetaliczne odlewy warstwowe złożone są z dwóch zasadniczych elementów tj. części nośnej oraz części (warstwy) roboczej. Część nośną bimetalicznego odlewu warstwowego stanowiło typowe tworzywo odlewnicze tj. staliwo niestopowe lub żeliwo szare z grafitem płatkowym, natomiast część roboczą stanowiła stal stopowa austenityczna gatunku X2CrNi 18-9 lub ferrytyczno-austenityczna gatunku X2CrNiMoN 22-5-3. Weryfikację wykonanych bimetalicznych odlewów warstwowych przeprowadzono w oparciu o nieniszczące badania ultradźwiękowe, badania struktury oraz mikrotwardości. Ponadto wykonano symulację komputerową procesu krzepnięcia bimetalicznych odlewów warstwowych w programie NovaFlow&Solid.
EN
In paper is presented technology of bimetallic layered castings based on founding method of layer coating directly in cast process so-called method of mould cavity preparation. Prepared castings consist two fundamental parts i.e. bearing part and working part (layer). The bearing part of bimetallic layered casting is typical foundry material i.e. unalloyed cast steel or grey cast iron with flake graphite, whereas working part is plate of austenitic alloy steel sort X2CrNi 18-9 or ferritic-austenitic alloy steel sort X2CrNiMoN 22-5-3. The quality of the joint in bimetallic layered castings was evaluated on the basis of ultrasonic non-destructive testing, structure and microhardness researches. Moreover was made computer simulation of solidification of bimetallic layered casting with use of NovaFlow&Solid software.
6
Content available remote The structure of connection of the AlSi5 - HS6-5-2 compound casting obtained by alphinising
Szymczak T.
Archives of Foundry Engineering
|
2011
|
Vol. 11, iss. 3
175-184
EN
The paper presents results of the analysis of the alphinising coat connection structure of the AlSi5 silumin - high speed steel HS6-5-2 compound casting. The alphinising coat was made in the AlSi5 silumin bath with temperature t = 750š5 C, insert hold time was [...] = 180 sec. The insert with the coat was transferred to a metal mould and then AlSi5 was poured. This way a silumin AlSi5 - steel HS6-5-2 compound casting was obtained. The connection between silumin and steel is diffuse and is formed by two layers with a different phase structure. The first layer from the mould [...] is formed by phase AlFe which contains constituent alloy additions of HS6-5-2 steel, namely W, Mo, V, Cr and Si. The other layer, [...] of intermetallic phases AlFeWMoCrSi, crystallises on it. In the silumin area of the compound casting, adjacent to the diffuse layer, occur randomly arranged plate and wall intermetallic phases AlFeWMoCrSi. Both in the intermediate layer and in adjacent silumin, and also in unbounded precipitates of phase AlFeWMoCrSi are present carbides which are the constituent phase of HS6-5-2 steel. Additionally, in the paper are presented results of analyses of the influence of: time [...] from removal of the insert from the alphinising bath until pouring silumin on it and preheating temperature of the metal mould [...] on the microstructure and quality of the obtained connection. It has been found that in order to obtain a proper connection, time [...] should not exceed a certain critical value, while temperature 't2.0' has considerable influence on the size of phase \alfa dendrites of the compound casting silumin.
7
Content available remote Zastosowanie ochładzalnika w celu rozdrobnienia struktury w odlewie bimetalicznym
Suchoń J.
Archiwum Odlewnictwa
|
2003
|
R. 3, nr 10
214--220
PL
Prezentowana praca stanowi próbę podniesienia twardości a pośrednio również odporności na ścieranie odlewów bimetalicznych poprzez zastosowanie ochładzalnika.
EN
Presented work shows the first test to increasing of hardness and also connected with it abrasion resistance of bimetallic castings through the chill application.
8
Content available remote Wybrane badania walców redukcyjnych wykonanych jako odlewy warstwowe
Olszyński J., Uhl W., Stefański K.
Krzepnięcie Metali i Stopów
|
2000
|
R. 2, nr 43
393--398
PL
Walce stosowane w walcarkach redukcyjnych wykonywane są w kraju z zastosowaniem prostych technologii odlewniczych, czego efektem jest niski uzysk, wysoki koszt obróbki mechanicznej i w efekcie wysoki koszt końcowego produktu, którym jest walec hutniczy. W czeskich odlewniach, z których niektóre polskie walcownie sprowadzają walce, stosują technologię odśrodkową odlewania walców, dodatkowo walce wykonuje się jako odlewy warstwowe. Prowadzi to do znacznego obniżenia kosztów ich realizacji przy porównywalnej w stosunku do walców krajowych jakości.
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.