Sparingly alloyed bell bronzes with elevated parameters of mechanical properties

Jung

et al. 2022

Metals

Bronze cast bells have been designed and developed for hundreds of years, with the worldwide spread of several faiths and religions such as Buddhism, Catholicism, and Protestantism. The exceptional ringtones of bronze bell metals have scientific healing and cultural importance. In this review article, we highlight the evolution of bronze bell metal over the decades, its composition, and the complex fabrication technologies used to date. Furthermore, we overview ancient and modern casting alloy technology, especially bronze bell castings in Asia. The bell shape, materials, and alloy casting technology have undergone dramatic change over the years. For comparison, we include different bronze cast bells and their characteristics produced from the Middle Ages to the present times. Based on the data obtained from the bell casting technology surrounding the Korean Peninsula, the major trends in the evolution of bronze bell castings and long-standing traditions of mold materials and alloys are described. In the present review, the effects of different elements on bell materials are qualitatively overviewed, with an assessment of the material and casting properties, service life, and bell sound. We also highlight the challenges of conventional bronze casting and possible solutions for future investment castings and rapid prototyping of bronze bells.

Section: Lwc For Bellsmentioning

confidence: 99%

Technological Insights into the Evolution of Bronze Bell Metal Casting on the Korean Peninsula

Jung

et al. 2022

Metals

“…Paduan perunggu dengan komposisi 80%Cu-20% Sn, umumnya digunakan sebagai bahan alat musik seperti lonceng, gamelan. Paduan ini memiliki sifat mekanik yang baik, stabil dalam kondisi temperatur kamar dan sifat akustik yang baik dan mampu menghasilkan getaran yang tahan lama (getaran redaman rendah) (Lisovskii, 2007, Hosford, 2005.…”

Section: Pendahuluanunclassified

Densitas dan Kegagalan Produksi pada Proses Produksi Genta Bali

Sugita

Priambadi

Astawa

2020

JEM

Proses pembuatan lonceng tradisional berbahan perunggu dilakukan dengan proses pengecoran. Bahan yang biasa digunakan dalam produksi lonceng tradisional adalah paduan perunggu denganperbandingan persentase tembaga (Cu) 80% dan timah (Sn) 20%. Paduan ini memiliki sifat mekanik dan akustik yang lebih baik dibandingkan dengan kuningan. Tujuan dari penelitian ini adalah untuk menentukan karakteristik kepadatan dan cacat cor dalam proses produksi lonceng tradisional. Paduan perunggu dilebur dalam tungku crucible pada temperatur tuang 1000, 1050, 1100 °C. Paduan yang telah mencair dituang ke dalam cetakan permanen yang telah dipanaskan terlebih dahulu pada temperatur 200, 300, 400°C. Billet hasil coran dipotong-potong dan dimanufacturing untuk pembuatan spesimen uji densitas dan porositas. Hasil penelitian menunjukkan bahwa variasi temperatur penuangan mempengaruhi densitas dan cacat hasil coran. Semakin tinggi temeratur tuang berdampak pada semakin banyak cacat yang terjadi, terutama cacat-cacat porositas. Porositas material yang lebih kecil berpengaruh pada kualitas akustik yang lebih baik. The process of making traditional bells made of bronze alloys is a casting process. Materials commonly used in the production of traditional bells are bronze with a percentage of copper (Cu) of 80% and tin (Sn) of 20%. This alloy has better mechanical and acoustic properties compared to brass. The purpose of this study was to determine the characteristics of density and cast defects in the traditional bell production process. The bronze alloy was melted in a crucible furnace at a temperature of 1000, 1050, 1100°C. The melted alloys were poured into a permanent mold that has been heated at a temperature of 300°C. Castings billets were cut into pieces and manufactured for making density and casting defect test specimens. The results showed that the variation of the pouring temperature affected the density and casting defects. The higher the pouring temperature has an impact on the more cast defects, especially the porosity of the cast. Low porosity affects better acoustic quality.

Global J. Eng. Technol. Adv.

“…High tin bronze is a bronze alloy since the main composition of this alloy are copper (Cu) and tin (Sn). Tin bronze with the composition of 80%Cu -20% Sn in general is used as a material for musical instruments such as bell and gamelan due to the great mechanical characteristics of this alloy, stable in the room temperature condition, good acoustic characteristic which can produce lengthy sound (low damping vibration) [1][2] [3]. Tin bronze has a louder sound compared to the other metals.…”

Section: Introductionmentioning

confidence: 99%

“…The utilization of copper tin composition as the musical instrumental material varies such as: the manufacturing of modern cymbals uses the composition of 80% Cu-20%Sn, the manufacturing of cymbals in Switzerland uses the composition of 92%Cu-8% Sn. The composition 84%Cu -16% Sn is quite commonly used for cymbals., bronze bell Br 022 with the composition of 78,12%Cu, 21,8% Sn,0.007%Zn, 0.018% Pb, 0,003%Fe, 0.048 P [1].…”

Section: Introductionmentioning

confidence: 99%

The characteristics of the mechanical and acoustic bronze cu20sn as traditional bell material

Sugita¹,

Astawa²,

Priambadi³

2023

This study is aimed to find out the mechanical and acoustic characteristics of casting traditional bell's result using metal mold and sand mold. The mechanical and acoustic characteristics of casting traditional bell's result are compared between metal molded and sand molded casting. The bronze alloy was smelted in a crucible furnace at the casting temperatures of 1000, 1050, and 1100 °C. The melted alloy is poured into a sand mold and a preheated metal mold at a temperature of 200 °C. Specimens were formed into bell and billet. The bell form was for acoustic testing. The Billet casted was cut into a few parts and were manufactured as a specimen for hardness test. This study has showed that mechanical characteristic specifically the hardness of metal molded casting is better than sand molded casting. The Acoustic properties of particular damping characteristicsis depended on the porosity of casting’s result. The bell’s tone isn’t produced by the mono frequency but it’s generated by more than one frequency domain. Similarly, the subjective test of acoustic characteristic didn’t show a significant obvious difference.