การเปรียบเทียบธาตุผสม และคุณสมบัติเชิงกลระหว่างแร่เหล็กน้ำพี้ จังหวัดอุตรดิตถ์ และแร่เหล็กตำบลบุฮม อำเภอเชียงคาน จังหวัดเลย

Abstract

This research was conducted to search for sources of Nam Phi iron ore found in Uttaradit Province and sources of iron ore of Bu Hom Sub-District, Chiang Khan District, Loei Province by surveying mining. Obtained ore was tested to find chemical percentage of iron (Fe), it was found that Nam Phi iron ore contained iron (Fe) of 68.40% while iron ore of Bu Hom Sub-District, Chiang Khan District contained iron (Fe) of 67.10%. Mined ore was crushed and smelted by using an integrated furnace based on an ancient method and bar forging. It was found that the weight of Nam Phi iron was 0.95 kilogram and the weight of iron of Bu Hom Sub-District, Chiang Khan District was 1.4 kilogram. Test pieces of iron from both sources were tested to find the content of alloying element. It was found that the content of Carbon (C) of Nam Phi iron was 0.0358% therefore Nam Phi iron was ductile and formable for producing appliances but it still lacked of good property on hardening. Similarly, iron of Bu Hom Sub-District, Chiang Khan District, contained similar content of Carbon. For content of Silicon (Si), Manganese (Mn), and Chromium (Cr) of Nam Phi iron that was higher than that of iron of Bu Hom Sub-District, Chiang Khan District, Nam Phi iron had better efficiency on mechanical property. Importantly, Nam Phi iron had higher content of Copper (Cu) than that of Nam Phi by 0.102% averagely therefore Nam Phi iron could resist corrosion properly. The results obtained from this calculation of alloying element of these 2 sources revealed that iron from both sources had good capability on mechanical operation of iron.