Optimizacija procesnih parametrov peskanja in pranja ulitkov za maksimalen adhezijski oprijem silikona

Primožič, Valerija (author), Kramar, Davorin (mentor)

Magistrsko delo obravnava optimizacijo procesov peskanja in pranja ulitkov, po katerih se pri izvedbi trganih testov pojavi problem slabe pripravljenosti površine za maksimalen adhezijski oprijem silikona. Slab adhezijski oprijem, ki kaže na tesnost spoja, je posledica neustrezne hrapavosti in čistosti površine. Z metodo statističnega nadzora procesa se je obstoječi proces peskanja spremljalo in na podlagi rezultatov hrapavosti površine določilo stabilnost in sposobnost procesa. Na podlagi dobljenih rezultatov se je z metodo načrtovanja eksperimentov določilo parametre peskanja, ki imajo na kakovostno pripravljeno površino največji vpliv. Ugotovljeno je bilo, da imata na površino in na hrapavost površine največji vpliv količina peska skozi turbine oz. obremenjenost turbin in čas peskanja. Z uporabo optimalnih parametrov procesa peskanja se je zmanjšalo hrapavost površine in izboljšalo pripravljenost površine, ki nudi maksimalen adhezijski oprijem silikona in s tem tesnost spoja.

• Language: Slovenian
• Keywords: ulitki, peskanje, pranje, trgalni testi, oprijemljivost silikona, optimizacija
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [V. Primožič]
• Year: 2019
• Number of pages: XXI, 83 str.
• PID: 20.500.12556/RUL-109377
• UDC: 621.747.55:66.011(043.2)
• COBISS.SI-ID: 16845083
• Publication date in RUL: 31.08.2019

Secondary language

• Language: English
• Title: Optimization of sandblasting and washing process parameters of casting parts for maximum adhesion bond of silicone

Abstract

Master's thesis deals with the optimization of sandblasting and washing processes, after which the problem of bad allert of the surface for maximum adhesion of silicone, with pull-off tests, occurs. Poor adhesion is noticable due to inadequate surface roughness and surface cleanliness. Using the method of Statisical Process Control (SPC), the existing sandblasting process was monitored and the stability and ability of the process were determined based on the results of surface roughness. Based on the obtained results, the optimal sandblasting paramaters were determined, using the Design of Experiments Method (DOE). With DOE it was found, that the amount of sand through the turbines and the blasting time have the greatest influence on the surface quality and surface roughness. With the use of optimal process parameters surface roughness was minimized and the surface quality was improved for maximum adhesion of silicone.

• Keywords: castings, sandblasting, washing, pull-off tests, adhesion of silicone, optimization