Pengaruh Jarak Penyemprotan Powder Coating Terhadap Ketebalan, Kekerasan, dan Laju Korosi Pada Material SS400
DOI:
https://doi.org/10.55606/teknik.v5i3.8308Keywords:
POWDER COATING, LAJU KOROSI, POWDER COATING, CORROSION RATEAbstract
Abstract. This study aims to determine the effect of powder coating spraying distance on the thickness of the powder coating layer, hardness and corrosion rate on SS400 material. Thickness measurement using a Coating Thickness Gauge tool to determine the thickness of the powder coating spraying results, while hardness testing is carried out using the Vickers hardness method with an indenter load of 1.98 N on the material without a powder coating layer and 0.98 N on the material with a powder coating layer, and to accelerate the corrosion rate the material is immersed in a vinegar solution (CH3COOH) for ± 6 days. The results of the study showed that the highest thickness test at a distance of 10 cm was 72.8 μm, and the lowest at a distance of 20 cm spraying powder coating 50.9 μm. The highest hardness value of the material before being coated with powder coating is 152.12 HV, the hardness value of the material with a spraying distance of 10 cm has a material hardness value of 18.34 HV, the hardness value of the material with a spraying distance of 15 cm has a material hardness value of 19.32 HV, the hardness value of the material with a spraying distance of 20 cm has a material hardness value of 19.06 HV. The lowest corrosion rate value is found in the material with a spraying distance of 10 cm with a corrosion rate value of 0.000332 mm/y, and the highest corrosion rate value is found in the material without a powder coating layer, namely with a value of 0.0233 mm/y.
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