Analisa Pengaruh Desain Gritcone terhadap Pola Patahan Gritcone pada Vertical Roller Mill dengan simulasi Explicit Dynamic (LS-DYNA)

Andika Rizaldy, Mas Irfan P Hidayat, Mas Irfan P Hidayat, Rochman Rochiem, Rochman Rochiem
Submission Date: 2017-01-22 09:18:58
Accepted Date: 2017-03-17 10:12:43

Abstract


Polysius Vertical Roller Mill adalah coal mill yang digunakan PT Holcim Indonesia untuk menggiling batubara bituminous untuk bahan bakar rotary kiln. Dalam pengoperasiannya, salah satu komponen dari Vertical Roller Mill mengalami kegagalan aus yaitu gritcone. Penelitian ini dilakukan untuk menganalisa perseberan ketebalan dari komponen gritcone dengan disimulasikan secara dinamis eksplisit dan berdasarkan kondisi operasional. Ketebalan dinding dipetakan karena permukaan yang terkena abrasi terdapat patahan mikro di permukaannya. Penelitian dilakukan dengan variasi ketebalan 0.01 m, dan 0.02 m serta variasi desain gritcone dengan radius bawah sebesar 0.165 m, 0.215 m, 0.265 m, 0.315 m, dan 0.365 m. Hasil penelitian menunjukkan pengurangan ketebalan paling besar terjadi pada desain gritcone dengan radius 0.165 m dengan ketebalan 0.01 m dan 0.02 m, dengan pengurangan sebesar 1.423x10-5 m dan 2.45x10-5 m.

Keywords


Analisa dinamis eksplisit, Vertical Roller Mill, aus, ketebalan, gritcone

References


Thyssenkrupp Steel Europe. (2014). XAR® 400 Datasheet. Germany.

Ratia, V . (2015). Behavior of Martensitic Steels in Abrasion and Impact Wear Testing Conditions.Finlandia : Tampere University of Technology

Gaulco, Agustin. (2016). Study of Abrasive Wear Resistence of Fe-based Nanostructured Hardfacing.Argentina : National University of Lamos de Zamora


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