scholarly journals Investigation of the technological parameters of cored castings when in a lined coquille

Author(s):  
D. A. Volkov ◽  
A. D. Volkov ◽  
A. V. Efimenko

The article presents a number of experimental and research works on the development of the parameters of the casting technology for castings with internal cavities formed by a sand rod, by casting in a lined coquille (chill mould) with a vertical connector. The influence of gating systems with a central riser and side risers on the thickness of the casting wall shedding and on the mechanical characteristics of the cast iron alloy, including ligatures, is revealed.

Alloy Digest ◽  
1980 ◽  
Vol 29 (3) ◽  

Abstract AMPCOLOY 570 is a cast copper-nickel-aluminum-cobalt-iron alloy specially developed for applications involving severe stresses and high temperatures, such as glass-making molds and plate-glass rolls. It is significantly superior to cast iron which has been commonly used for glass-making molds. Good foundry techniques will yield high-quality castings of Ampcoloy 570 in a wide range of section sizes. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-392. Producer or source: Ampco Metal Inc..


2014 ◽  
Vol 59 (3) ◽  
pp. 1037-1040 ◽  
Author(s):  
I. Vasková ◽  
M. Hrubovčáková ◽  
J. Malik ◽  
Š. Eperješi

Abstract Ductile cast iron (GS) has noticed great development in last decades and its boom has no analogue in history humankind. Ductile iron has broaden the use of castings from cast iron into areas, which where exclusively domains for steel castings. Mainly by castings, which weight is very high, is the propensity to shrinkage creation even higher. Shrinkage creation influences mainly material, construction of casting, gating system and mould. Therefore, the main realized experiment was to ascertain the influence of technological parameters of furane mixture on shrinkage creation in castings from ductile iron. Together was poured 12 testing items in 3 moulds forto determine and compare the impact of various technological parameters forms the propensity for shrinkage in the casting of LGG.


2012 ◽  
Vol 184-185 ◽  
pp. 1240-1243
Author(s):  
Ya Hui Wang ◽  
Bao Chen Ren ◽  
Ji Hong Yang

Plasma arc was used as a heat source to make a surface quenching on alloy cast iron, and orthogonal test was used to optimize the surface hardening technological parameter of plasma arc. The influence of the technological parameters on hardness and depth of the hardening layer was analyzed, and the microhardness and the microscopic structure condition after being disposed were also analyzed and discussed.


2019 ◽  
Vol 54 (4) ◽  
pp. 116-123
Author(s):  
P.V. Dorodov ◽  
◽  
M.R. Kudrin ◽  
A.V. Kostin ◽  
V.A. Nikolaev ◽  
...  

Physical and mechanical properties of the polymeric sand used as floor covering in cattle stalls were investigated. Samples of the polymeric sand were tested under static and dynamic stress, an impact test was done, mechanical characteristics were measured, and the material structural efficiency was evaluated. The polymeric sand tile appeared strong, reliable and durable material. The study material exhibited viscoelasticity. The polymeric sand samples demonstrated impact viscosity in the range 242,3– 548,3 kJ/m2 . The figure was 3,5–13,7 times higher than that of gray cast iron and was comparable with some classes of carbon structural steel. Mechanical properties of the polymeric sand were analysed. The characteristics revealed in the analysis can be used in dimensioning and designing products made from polymeric sand under various strength indices.


1993 ◽  
Vol 35 (3) ◽  
pp. 155-159
Author(s):  
G. I. Slyn'ko ◽  
V. M. Grabovyi ◽  
I. P. Volchok
Keyword(s):  

2018 ◽  
Vol 7 (10) ◽  
pp. 331-335
Author(s):  
Su Yin Win ◽  
Thwe Thwe Htay ◽  
Maung Maung Yi

1982 ◽  
Vol 104 (1) ◽  
pp. 60-65
Author(s):  
Yuichi Tanaka ◽  
Hakaru Saito ◽  
Ikuo Tokura ◽  
Katsuya Ikawa

The main purpose of this paper is to present some data on the mechanical and physical properties of compacted-vermicular graphite cast iron and to give a reasonable interpretation to the characteristics by using numerical indexes indicating the shape of graphite flakes in the structure. After describing the preparation of the material and a new method for measuring thermal diffusivity of the iron, the influence of kind and amount of alloy added for treatment and of cooling rate upon the graphite shape is discussed by using the indexes of the structure. The thermal diffusivities and mechanical characteristics such as tensile strength and hardness are shown as functions of the indexes to clarify the relationship between them. Furthermore, the present indexes are compared with those proposed earlier to find which is most suitable for the cast iron treated in this work. Authors propose a definition of compacted-vermicular graphite cast iron, which is reasonable from the physico-mechanical point of view, and also show some typical mechanical properties and measures required to produce such cast iron with desirable features.


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