Pengaruh Thermal Shock dan Komposisi Evaporation Boats, Semen Tahan Api, dan Pasir Silika terhadap Kekuatan Impact dan Foto Makro Lining Refractory

Abstract

<p>The thermal shock behavior of ceramic refractory materials is of particular interest. Refractory materials are submitted to local temperature gradients in service that originate thermal stresses and thermal shock damage to the material. However, thermal shock treatment on the refractory made from evaporation boat waste is not well documented. The purpose of this study is to determine the effect of thermal shock on the strength of refractory with various compositions. In this study, the refractory was made using 100% refractory cement (sample 1). For Sample 2, the refractory was made from a mixture of refactory cement and evaporation boats waste, each of 50%: 50%. Meanwhile, specimen 3 of the refractory is made from a mixture of refactory cement, evaporation boat waste, and silica sand of 40%: 50%: 10%, respectively. The Thermal shock treatment is carried out at a temperature range of 100 – 700<sup>o</sup>C for each specimen. The effect of thermal shock treatment on the mechanical properties of each refractory specimen was investigated using the impact and macrography test. Temperature variations in thermal shock have different effects on the level of impact strength on impact test specimens. The lowest strength was 0,012297735 J/mm<sup>2 </sup>at thermal shock 700<sup>0</sup>C in sample 3, and the highest impact strength was 0,03928934 J/mm<sup>2</sup> at 400<sup>o</sup>C thermal shock temperature in sample 2. The macrographic examination shows the higher the thermal shock temperature, the greater the fracture produced when the impact test is carried out. This is because the hardness of the refractory material increases.</p>

The Potential of Evaporation Boats Waste as a Crucible Material for Casting: A Review

“…The combination of compounds between the two makes evaporation boat waste have the properties of high thermal conductivity and melting point. Hence, evaporation boat waste is suitable for refractory materials [28].…”

Pengaruh Durasi Pencampuran Terhadap Mechanical Properties Crucible Peleburan Aluminium

“…Hasil uji XRD (Gambar 2.13) menunjukan boron nitride (BN) dan titanium diboride (TiB2) adalah material penyusun pada limbah evaporation boats. Kombinasi dari BN dan TiB2 mengakibatkan limbah evaporation boats memiliki sifat chemical, mechanical dan electrical yang sesuai untuk aplikasi crucible (Fajri et al, 2021).…”

“…Serbuk Limbah Evaporation Boats Gambar 2.13. Hasil Uji XRD pada Limbah Evaporation Boats (Fajri et al, 2021) Selain limbah evaporation boats, pada penelitian ini juga menggunakan material semen tahan api, dan kaolin, sebagai campuran untuk membuat spesimen crucible. Semen tahan api yang digunakan adalah SK-34 yang banyak digunakan pada aplikasi perekat batu tahan api, furnace, tungku peleburan, incenerator, cerobong, ducting, dan rotary kilns.…”

Effect of Green Body Heating Rate on Mechanical and Physical Properties of Crucible Materials Made from Evaporation Boats Waste

“…Keunggulan dari boron nitride diatas sangat perlu dimanfaatkan dan diaplikasikan pada benda seperti material pembuatan crucible yang digunakan untuk aktivitas peleburan dalam pekerjaan pengecoran logam. Proses pada pekerjaan pengecoran logam yang perlu diperhatikan adalah saat peleburan terutama crucible sebagai wadahnya, sehingga ini penting untuk dilakukan penelitian [2].…”