Efficiency Improvement of Aluminum Recycling Process
ประเภทบทความ :
บทความวิชาการ
หมวดหมู่ :
วิศวกรรมสิ่งแวดล้อมและวัสดุ
Aluminum has been used as a raw material in the automotive, aerospace, cookware and construction
industries, including daily appliances. The manufacturing of aluminum ingot from aluminum scraps involves the
recycling process where the aluminum scraps are melted and recast together with the modification of chemical
composition. Since the recycling process has to account some operations to prepare and manage the scraps, the
process is generally ineffective in terms of time and activities related. This in turn leads to the increased waiting
time and cycle time of the process. This research therefore aims at increasing the efficiency of aluminum recycling
process with emphasizing on the cycle time reduction. The ECRS technique and 5W1H activity analysis were
employed to eliminate wastes in each operation of the process. The casting techniques were used to reduce scarp
melting time which shared the largest portion of the whole production time. After the process improvement, wastes
can be eliminated, thus increasing the efficiencies of man and machines from 34.12% and 59.46% to 50.68% and
61.95%, respectively. The average production cycle time can be reduced from 25.91 hours to 20.13 hours, thus
saving the manufacturing cost by 421,327.65 baht accordingly.
วันที่ลง01/07/2019
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