Structure and Properties Research of Casts Made with Copper Alloys Matrix

Abstract

Krakow. The research comprises the processes connected with the technology of melting, refining and making casts based on copper matrix, both contemporary and historical, especially bronzes containing tin, zinc and lead. These issues are well-known but they still pose problems for contemporary foundries. The article presents the results of modifying formulas on the improvement of mechanical properties and limiting casting defects.Keywords: copper, bronze, refining, modification W artykule przedstawiono wyniki badań realizowanych w Pracowni Odlewnictwa Metali Nieżelaznych na Wydziale Odlewnictwa AGH w Krakowie. Badania obejmują procesy związane z technologią topienia, uszlachetniania oraz odlewania stopów na osnowie miedzi, zarówno współczesnych jak i historycznych, głównie brązów zawierających cynę, cynk i ołów. Poruszone zostały zagadnienia związane z procesem topienia oraz kształtowania struktury odlewów z miedzi. Problemy te znane są już od dawna, ale nadal stanowią aktualny problem współczesnych odlewni. Przedstawione zostały wyniki badań wpływu preparatów o charakterze modyfikującym na poprawę właściwości mechanicznych i ograniczenie wad odlewniczych.

Effect of Alloying Additives and Moulding Technology on Microstructure, Tightness, and Mechanical Properties of CuSn10 Bronze

“…Due to their properties, including corrosion resistance, these bronzes currently have a significant presence in technology [8][9][10][11][12]. These alloys have found applications in automotive, electronics, and maritime industries, among others [13][14][15][16].…”

“…In previous studies, the authors [11][12][13]15,29,35,37,42,48] have usually focused on determining the proportion of tin in the CuSn10 alloy, as well as the influence of alloying additives and modifiers on the mechanical properties of tin bronzes. Here, the research has been extended, as this paper considers the simultaneous influence of several factors, related both to the tin content and selected additives in tin bronzes, but also to the mould technology, including the moulding and core sand used.…”

Experimental Investigation and Thermodynamic Modeling of Influence of Nickel and Titanium Content on the Structure and Selected Properties of Tin Bronzes

“…Tin bronzes, known and applied already in the antiquity, still constitute the important and irreplaceable group of alloys used for production of machines and parts of devices [3][4][5][6][7][8][9]. Advantages of these alloys are, among others, good flowability, strength, ductility, high corrosion resistance and also abrasion resistance at high loads [10][11][12]. In Cu-Sn alloys, Sn content is important since it influences its strength and functional properties [13][14][15][16][17][18].…”

Archives of Metallurgy and Materials

“…Skill and improvement of the investment casting technique was important in the progress of casting technology engineering [1]. This method of precision casting is one of the principal manufacturing methods applied contemporarily in the medical, automotive, aeronautical, and arms industries as well as in the areas of jewelry casting and art [3][4][5][6][7][8][9][10][11][12].…”