ANALISIS KEGAGALAN PENGECORAN LOGAM MENGGUNAKAN METODE FAILURE MODE AND EFFECT ANALYSIS (FMEA) PADA USAHA KERAJINAN LOGAM H. NASRUL

Abstract

Industry in Indonesia is currently showing an increase in market demand. One of the manufacturing industries is an industry that uses molds from sand media. Metal Crafts Business H. Nasrul is one of the companies engaged in the manufacturing industry of talempong music instruments and souvenirs typical of Kabau and others. The purpose of the analysis is to find out the types of defects that occur in the talempong casting process. Regarding these problems, one is to recognize the failure of metal casting, one of the methods is FMEA (Failure Mode and Effect Analysis) which is a quality control method. To determine the value in FMEA requires addition by using Risk Priority Number (RPN), RPN is a technique for analyzing risks related to problems that have been identified during FMEA creation by using RPN that involves variable severity, occurance and detection. Based on the type of failure that occurs in metal casting there are 4 types of damage, namely air cavity defects, pinhole defects, crack defects and flow defects. From the results of research on metal casting, there are 4 components of damage and there is 1 damage that has the highest risk priority number (RPN) which is found in the air cavity defect where the pouring too slowly gets a high RPN value of 280. From this type of disability it can be concluded that the repair what must be done is to start from the selection of quality raw materials to the process of making talempong itself because the processes carried out in metal casting are interconnected with one another.

KeyWords : Metal Casting Disability, FMEA, RPN