Methodology supporting production control in a foundry applying modern DISAMATIC molding line

Abstract

Abstract. The paper presents methodology of production control using statistical methods in foundry conditions, using the automatic DISAMATIC molding line. The authors were inspired by many years of experience in implementing IT tools for foundries. The authors noticed that there is a lack of basic IT tools dedicated to specific casting processes, that would greatly facilitate their oversight and thus improve the quality of manufactured products. More and more systems are installed in the ERP or CAx area, but they integrate processes only partially, mainly in the area of technology design and business management from finance and control. Monitoring of foundry processes can generate a large amount of processrelated data. This is particularly noticeable in automated processes. An example is the modern DISAMATIC molding line, which integrates several casting processes, such as mold preparation, assembly, pouring or shake out. The authors proposed a methodology that supports the control of the above-mentioned foundry processes using statistical methods. Such an approach can be successfully used, for example, during periodic external audits. The mentioned methodology in the innovative DISAMProdC computer tool was implemented.

Nondestructive, Microwave Testing of Compression Strength and Moisture Content of Green Molding Sands

“…From the presented studies (Figs. 6,7,8) in the study of the bentonite-water system, the significant effect of the double-valve diffusion effect was demonstrated (diffuse double layer DDL), on the introduction of pore water into the montmorillonite layers was demonstrated at high ratios solid to water (S/L) [42]. Meanwhile, studies on electrical proper- Fig.…”

“…Literature analysis and own research (Figs. 6,7,8) show that water content influences the results of dielectric permittivity. Water in green molding sands is an indispensable component, which gives strength.…”

“…11 The influence of ε r (a) and ε r (b) on green compression strength of GLC moulding sand with 8% bentonite molding sand is known, at constant density, it is possible to obtain a standard curve for each type of bentonite (Figs. 6,7,8). As a result, by making only one dielectric permittivity measurement, it is possible to determine the strength of a green moulding sand.…”

“…The requirements for the properties of moulding sands are based on the size, shape and design of the casting and the planned moulding process (for instance: hand ramming, automated moulding) [3,4]. The most important properties of the green moulding sands include: compactibility, moisture content, specimen weight, permittivity, green compression strength [3,8]. Green compression strength is a crucial property of the moulding sand, which represents Fig.…”