EFFECT OF FLAME SPRAY SUBSTRATE PREPARATIONS, COATING MATERIALS, AND POST HEAT-TREATMENT TEMPERATURE TO DECREASE SOIL ADHESIVITY ON EXCAVATOR BUCKET SS400 STEEL PLATE

• Main Author: Arrasyad, Irham
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/76030
• Institution: Institut Teknologi Bandung

<p align="justify">SS400 is a commonly used steel on excavator bucket and can experience adhesion phenomenon with soil in its working environment. Soil adhesivity could reduce excavator’s effiency so soil adhesivity needs to be handled. Soil adhesivity can be affected by surface properties of steel so this research did surface treatment with flame spray to reduce soil adhesivity on SS400 steel. This research is designed to understand the effect of flame spray parameters on the coating it produces. The flame spray process is done with variation of substrate preparations, coating materials, and post heat-treatment temperature. The coatings then characterized with metalography, thickness measurement, roughness test, hardness test, contact angle test, and wear test. Then, the the coating is tested with soil adhesion test with soil that has been tested with x-ray diffraction. X-ray diffraction result shows that the soil has SiO2 and FeO(OH) as its main minerals. Test results from this research show that sandblasting preparation increases roughness and decreases soil adhesion. NiBSi material produces thinner, smoother, softer, better wear performance, and lower soil adhesion thant NiCrBSiFe. The increase in post heat-treatment temperature from 500°C to 700°C reduces porosity, roughness, hardness, and wear performances.