Analisa Pengaruh Heat Treatment Nilai Uji Kekerasan Pada Mata Pisau Mesin Pencacah Botol Limbah Plastik
Keywords:
heat treatment, JIS SUP9, PET (polyethylene terephthalate), vickersAbstract
The use of plastic bottle waste products that are not environmentally friendly causes various serious environmental problems. Based on the location in Kuburaya district, precisely in the Ambawang area, the results of a survey of waste in the field reached 200-250 kg/day. The design of the garbage chopper machine is carried out to reduce the problem of PET (Polyethylene Terephthalate) main part of the plastic waste bottle chopper machine is the blade. The temperature heat treatment is a gradual heat treatment of steel which aims to change the mechanical properties of the steel. In this research, the hardness testing process uses the Vickers with the standard hardness testing using ASTM E92-82. The dimensions of the test sample are 50 mm x 50 mm x 6.7 mm and the dimensions of the blade are 260 mm x 55 mm x 6.7 mm. Each test sample has 5 test points with 7 test samples tested with the material used JIS SUP9 Steel. Temperature heat treatment 700oC, 750oC and 800oC with holding 15 minutes. 10 and 15 minutes quenching time with water cooling mediaThe results of this study indicate that the average hardness value without HV treatment is 158.56. Temperature 700oC quenching 10 and 15 minutes the average hardness value is 207.88 HV and 220.92 HV. Temperature 750oC quenching 10 and 15 minutes the average hardness value is 193.34 HV and 204.4 HV. Temperature 800oC quenching 10 and 15 minutes the average hardness value is 227.1 HV and 208.68 HV. It can be concluded that the highest hardness value is at a temperature of 800oC, quenching 10 minutes, the average hardness value is 227.1 HV.References
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