Open AccessThe proposed improvements to minimize potential failures using lean six sigma and multi attribute failure mode analysis approaches
Author(s) -
Maria Ulfah,
Dyah Lintang Trenggonowati,
Ratna Ekawati,
S. Ramadhania
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/673/1/012082
Subject(s) - six sigma , ctq tree , enhanced data rates for gsm evolution , failure mode and effects analysis , factory (object oriented programming) , production (economics) , engineering , lean manufacturing , raw material , electromagnetic coil , steelmaking , reliability engineering , process engineering , manufacturing engineering , materials science , metallurgy , computer science , injury prevention , macroeconomics , chemistry , environmental health , domestic violence , telecommunications , poison control , programming language , medicine , organic chemistry , electrical engineering , economics
PT X is the largest steel industry in Indonesia. During the production process, still have large quantities of waste defect. The purpose of this research is to determine the waste that occurs in the production process, determine the characteristics of deformity or critical to quality (CTQ), determine the sigma value, determine the factors that caused the failure of the production process, and determine the proposed improvement to minimize the failure of the production process. The most dominant types of defects are serrated edge, wavy edge, poor cleanliness, pick up, edge crack, ripple edge, and bad weld. The sigma value of cold rolled coil product is 4, 131 which is included into the industry average of USA (± 4σ). Factors that caused cold rolled coil production process failed based on criteria severity, occurrence, detection, and expected costs by Fuzzy Analytical Hierarchy Process (F-AHP) is material imported from outside with a total weight of 0.087. Proposed improvements done to minimize failure in cold rolled coil production processes are doing trial for products from HSM factory to test or know the slab specifications related to the chemical constituents of steelmaking and adjusting the format (such as thickness, length, width) and steel specifications to corresponding.