搜索结果: 121-135 共查到“知识库 炼铁”相关记录145条 . 查询时间(2.203 秒)
Structural causes of defects in a cast iron mill roll
Metallography Castings defects Mill rolls Transformed ledeburite
2011/3/15
This paper describes an analysis of a defective microstructure of a mill roll. For this purpose, a piece of a broken roll was collected. That roll was made of mottled cast iron. Its microstructure con...
Morphological forms of carbon and their utilizations at formation of iron casting surfaces
Product development Environment protection Lustrous carbon
2011/3/15
Model pyrolysis made possible to identify three solid products of carbonaceous additives. Lustrous carbon is the most important form of the pyrolysis carbon. With its structure and physical and chemic...
Effect of boron carbide on primary crystallization of chromium cast iron
Solidification process Wear resistant alloys Chromium cast iron Crystallization Modification
2011/3/15
In the paper results of the influence of boron carbide (B4C ) as inoculant of abrasion-resisting chromium cast iron (about 2,8% carbon and 18% chromium) on primary crystallization researches are prese...
The study discusses the possibility of control of the high-quality grey cast iron and ductile iron using the author’s genuine computer programs. The programs have been developed with the help of algor...
Conventional flow curves of liquid cast iron put on spheroidization
Theoretical basis of foundry process Flow curves Cast iron
2011/3/15
The purpose of the investigation was to confirm the hypothesis that the conventional flow curves of liquid cast iron put on sferoidization determined from the rod fluidity test are comparable to flow ...
The aim of the present study has been designing and putting in operation of a stand for sonic testing equipped with modern and readily available numerical devices and with the author’s own computer pr...
Numerical modelling of thermal and fluid flow phenomena in the mould channel
Solidification Molten metal flow Mould filling Mathematical and numerical modeling
2011/3/11
In the paper, a mathematical and a numerical model of the solidification of a cylindrical slender shaped casting, which take into account the process of filling the mould cavity with molten metal, has...
Mechanisms and mechanics of porosity formation in ductile iron castings
Casting defects Ductile cast iron Porosity formation Feeding
2011/3/11
Shrinkage defects in ductile iron castings can be of two basic types: shrinkage cavities associated with the liquid contractionprior to the expansion period of the iron as well as the porosity, which ...
The identification of pouring conditions of cast iron to sand moulds
Metallography Boundary layer of metal Spheroidal graphite iron
2011/3/15
The structure and properties of the castings in cast iron put on spheroidization depend especially on the pouring conditions. Decisive factor of local castings properties can be the flow ability of li...
Structural gradient in a thin wall casting of ductile iron
Thin wall ductile iron Structure Gradient
2011/3/11
In this paper a experimental and theoretical structural analysis of thin walled casting made of ductile iron is presented. The work shows that these castings posses a non-homogenous gradient structure...
Influence of the cast iron melting processes on environment using BAT
Cast iron Environmental protection Melting furnaces
2011/3/11
The object of the article is the problem of Best Available Techniques (BAT) utilized in processes of melting cast iron. It is possible, with help of these methods, to fulfill the accessible emission v...
The kinetics of zinc coating growth on hyper-sandelin steels and ductile cast iron
Hot-dip galvanizing Ductile cast iron Silicon-killed steel Zinc coating
2011/3/11
The studies aimed at an analysis of the formation and growth kinetics of zinc coating on reactive silicon-killed steels in a zinc bath. The growth kinetics of the produced zinc coatings was evaluated ...
Thermal analysis of ductile iron in thin walled casting
Thermal analysis Thin wall castings Archimedes spiral
2011/3/11
Hypereutectic ductile iron was cast in self hardening moulding sand to produce castings with the shape of Archimedes spirals and with wall thickness of 1, 2 and 3 mm. Inmould technique was used to pro...
Characterization of Solidification and Solid State Transformation in Duplex Cast Steel: Thermo-Calc Investigation
Metallography Duplex cast steel Solidification Phase Volume fraction
2011/3/11
The paper presents a characteristic of solidification process and changes occurring in the solid state in a duplex cast steel.
Knowledge Representation of Casting Metal Defects by Means of Ontology
Castings defects Knowledge formalization Knowledge bases creation
2011/3/11
The scattered nature of information requires implementation of appropriate tools and system solutions. The conception of decentralized diagnostic system of casting metal defects, in which the methods ...
