The article describes the optimization of the melting brass. Brasses, as one of the most popular alloys of copper, deserve special attention

in the context of the processes of melting, which in turn would provide not only products of better quality, but also reduce the cost of their

production or refining. For this purpose, several studies carried out deriatographic (DTA) and thermogravimetric (TG) using

derivatograph. The results were confronted with the program SLAG - PROP used to evaluate the physicochemical properties of the

coatings extraction. Based on the survey and analysis of the program can identify the most favorable physico - chemical properties, which

should be carried out treatments. This allows for slag mixtures referred configurations oxide matrix containing specific stimulators of the

reaction. Conducted empirical studies indicate a convergence of the areas proposed by the application. It should also be noted that the

program also indicates additional areas in which to carry out these processes would get even better, to optimize the melting process, the

results.

A special Slag-Prop Cu database has been developed to archive data from laboratory and industrial tests related to post-reduction slags. In

order to enrich the data areas, it was decided to design a system for measuring the temperature of the liquid slag and its viscosity. Objectives

of research work are to gather information on the properties of post-slags such as the temperature of liquid slag and its viscosity. The

discussed issues are especially important in the foundry practice. Designed research stand and using of database applications can greatly

facilitate the work of metallurgists, foundrymen, technologists and scientists. The viscosity measurement was developed and presented

earlier. The author's analytical methodology was supplemented by a thyristor measuring system (described in the article). The system

temperature measurement can be performed simultaneously in 3 ways to reduce the measurement error. Measurement of the voltage mV -

using the Seebeck effect can be measured throughout the entire range of thermocouple resistance, up to 1300 °C. Direct temperature

measurement ⁰C - measurement only below 1000 ⁰C. Additional measurement - the measurement can also be read from the pyrometer set

above the bath. The temperature and the reading frequency depend on the device itself. The principle of measurement is that in a molten

metal / slag crucible, we put a N-type thermocouple. The thermocouples are hung by means of a tripod above the crucible and placed in a

crucible. The thermocouple is connected to a compensating line dedicated to this type of thermocouple. The cable is in turn connected to a

special multimeter that has the ability to connect to a computer and upload results. Temperature measurement can be performed

simultaneously in 3 ways to reduce the measurement error. The Sn-Pb alloy has been subjected to testing for proper operation of the device.

In this foot should be observed the supercooling of the liquid, which initiates the crystallization process and in which latent heat begins to

exude raising the temperature until the coagulation temperature is reached.