Industri semen merupakan salah satu sektor industri di Indonesia yang cukup pesat kemajuannya. Dalam perkembangannya, industri semen masih memiliki kendala dalam penyediaan salah satu komponen penggerusnya, yaitu berupa grinding ball dalam mesin ball mill. Hingga saat ini kebutuhan industri semen

Content Provider	Semantic Scholar
Author	Bintang, Tanjung Selatan, Lampung
Copyright Year	2017
Abstract	MICROSTRUCTURE CHARACTERISTIC AND MECHANICAL PROPERTIES OF THERMAL HARDENED OF HIGH CHROMIUM WHITE CAST IRON FOR GRINDING BALL APPLICATION. ASTM A532 Type II-A is a high chromium white cast iron with carbon content 2.3% and chromium more than 13.3%. This material is widely used as a grinding ball. In this study, heat treatment process which is thermal hardened, was conducted to increase the hardness of this material. Quenching process used two kind of quench media, such as oil and forced air (which was blown directly from fan), while the tempering process was conducted with various temperatures, 250 °C, 300 °C, and 350 °C. After thermal hardening process, material was characterized by hardness testing, metallography by OM (optical microscopy) and SEM (scanning electron microscopy), and XRD (X-ray diffraction). The optimum hardness value is 723 BHN resulted from thermal hardening process at 300 °C. Higher hardness value was obtained due to form of tempered martensite and numerous of chrom carbide disperse in this material.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://ejurnalmaterialmetalurgi.com/index.php/metalurgi/article/download/261/126
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article