REDUCING WASTE FROM THE STEEL COILS INSPECTION PROCESS CASE STUDY : SAMPLE FACTORY

Abstract

The objective of this research was to study the cause of the inspection process of steel coils that did not meet the customer's specifications. To reduce waste from the steel coil inspection process to zero. and to set the correct working standards.
from the data collection of the production unit in the process of producing steel coils The most common problem is the process of measuring the defective workpiece The researcher then analyzed the cause of the problem by using fishbone diagrams and 7 quality control tools. It was found that the process of measuring the workpiece, reading and calculating the measurement value was inaccurate. Therefore, the correction was made by installing the automatic data transfer tool to the measuring device and using a computer program. for accurate processing and standardization of work.
Performance before the improvement of the steel coil measurement process between January and May 2020, the total production amounted to 48,927,240 kilograms, which was found to be waste generated from the measurement process of steel coils. The total amount of waste was 15,892 kilograms, with a waste cost of 40 baht per kilogram, a value of 635,680 baht, and after adjustments between June and October 2020, the total production amount was 46,901,467 kilograms. work and information on the number of customer complaints Before the improvement between January and May 2020, which has a total of 33 customer complaints, and after the improvement using the Inspection System program between June and October 2020, from the data, no customer complaints were found.