Blast furnace and cupola are aggregates used for pig iron cast production.Both work on very similar principles: they use coke as the fuel, charge goes from top to down, gases flow against it, etc.Their construction is (cupola usually much smaller) structures of too.Small differences between only in carbon silicon content.The slags blast chemical composition, but slag has a widespread civil engineering, primarily road construction, concrete cement production, other industries, utilization...

Phase transfer catalysis (PTC) is an excellent possibility in the synthesis of organic compounds as it allows reactions to be carried out under conditions green chemistry, while maintaining high yields and selectivity. The great advantage these also carrying not only conventional conditions, but mechanochemically solvent-free processes. Bearing this mind, we decided develop a new method for known biologically active from group long-chain arylpiperazines (LCAPs). first mortar trials were very...

Abstract The results of own studies concerning the application a new additive to CO 2 -hardened sodium water glass foundry sands are presented. additive, which is composition aqueous solutions modified polyalcohols, has been designated by symbol “B” and used as an agent improving sand knocking out properties. scope included various mechanical technological properties mixtures, such permeability, friability, life cycle cores Two types with different values silica modulus density, R145 R150,...

Abstract The subject of the study is improvement quality moulding sand preparation. An exploration research performed on data concerning parameters was described. aim to find relationships between various factors determining properties sands and, based results obtained, build models predicting moisture content with induction classification and regression trees. A two-match prediction approach demonstrated its effectiveness in evaluating discussed. knowledge form rules acquired this way can...

Abstract Modern techniques of castings production, including moulding sands require a strict technological regime and high quality materials. In the case self-hardening with synthetic binders those requirements apply mainly to sand, which adds more than 98% whole sand mixture. The factors that affect are both chemical (SiO 2 , Fe O 3 carbonates content) physical. Among these somewhat less attention is paid granulometric composition sands. As part this study, effect on bending strength Rg u...

Abstract Application of modern technological solutions, as well the economic and ecological is for foundries one main aspects competitiveness on market castings. IT solutions can significantly support processes. This article presents neural networks with different structures that have been used to determine moisture content moulding sand based selected properties research results. Neural were built using Matlab software. Moulding chosen quality control processes wide previous For proposed...

The paper presents the results of an investigation thermal deformation moulding sands with inorganic (geopolymer) binder a relaxation additive, whose main task is to reduce final (residual) strength and improves knocking-out properties sand.The sand without additive was reference point.The research carried out using hot-distortion method (DMA apparatus from Multiserw-Morek).The were combined linear studies determination expansion factor (Netzsch DIL 402C dilatometer).The study showed that...

Abstract Technological knowledge is a collection of information from each stage the casting production preparation process along with data and quality control data. Knowledge experience are most important factors for dynamic development foundry. Efficient archiving management technological knowledge, including computer simulations, critical part building competitive advantage. Analysis historical allows drawing right conclusions, guarantees improved final product. Effective enterprise...

The article takes into consideration the researches concerning inserting Glassex additive to microwaved-hardened and selfhardened moulding sands with water glass.In research different types of ester hardeners self-hardened glass were used.The influence on retained strength prepared by technologies hardening tested.The technology sand also estimated.

Abstract The necessity of receiving high quality castings forces undertaking research to elaborate moulding and core sands ensuring obtaining the materials with relevant technological parameters also environmental standards. most important group here are hydrated sodium silicate. Unfortunately, their fundamental disadvantages weak knock-out properties. article presents commonly used methods measuring properties sands. authors propose a new method for estimation this parameter. is based on...

Abstract The paper presents possibility of using biodegradable materials as parts moulding sands’ binders based on commonly used in foundry practice resins. authors focus thermal destruction binding and deformation sands with tested materials. All the research is conducted for material two typical resins separately. point article to show if are compatible from points view. It was proved that characterized similar but those different.

Abstract The article discusses the issue of influence furfuryl alcohol content in resin binders on properties moulding sand at elevated temperature. Reducing share this component - due to requirements European Union regarding its toxicity may cause a decrease temperature sands’ destruction and, consequently, thermal deformation moulds and creation many casting defects. study examined impact processes strength an ambient tendency deformation.

Abstract Artificial neural networks are one of the modern methods production optimisation. An attempt to apply for controlling quality bentonite moulding sands is presented in this paper. This assessment method suitability by means detecting correlations between their individual parameters. The investigations were aimed at selection network able predict active content sand on basis properties such as: permeability, compactibility and compressive strength. Then, data selected parameters new...

This article is devoted to ecological moulding sands with hydrated sodium silicate as binder. The inorganic nature of the binder results in poor knock-out properties and low ability mechanical reclamation tested sands. In present study authors focused on developing a new addition composition these environmental friendly foundry sands, providing them better properties. analysis literature data let focus use additives containing Al2O3 components silicate. These provide measured according...

Many years of foundry practice and much more accurate analytical methods have shown that sands with organic binders, in addition to their many technological advantages, pose risks associated the emission compounds, including harmful ones (e.g., formaldehyde, phenol, benzene, polycyclic aromatic hydrocarbons, sulfur), arising during pouring liquid casting alloys into molds, cooling, knock-out. The aim this research is demonstrate potential benefits adopting inorganic binders European iron...