Development of the monitoring methods of the vent clogging in the injection mold

Kim, Bongju; Gim, Jinsu; Jeon, Joohyeong; Jeong, Taejoon; Han, Eun Su; Rhee, Byong-Duk

doi:10.1063/1.5142930

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…For tire molds, this can represent 1000 to 3000 layers of organic and inorganic compounds that need to be removed [1]. Monitoring the proper time for the cleaning is essential, and thus it was a subject of research by Kim et al [2], who studied how to measure temperature and pressure changes in the mold cavity to do so effectively.…”

Section: Introductionmentioning

confidence: 99%

A Practical Approach to Cleaning Molds from Rubber Residues

Novák

Skrobak

Hausnerová

et al. 2022

2022 26th International Conference on Circuits, Systems, Communications and Computers (CSCC)

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In this paper, methods of fouling prevention and cleaning of the molds from vulcanized rubber residues are presented. The surface free energy of mold surfaces has been measured and the mold release agents were compared by measuring the force needed for the release of the form. The efficiency of sodium hydroxide solvent currently used for mold cleaning in industrial practice is compared with an acid-based solvent. The effect of the acid on the mold surface is monitored as well. The relative mass loss and the change in the surface roughness parameters Sa and Sz were evaluated during the corrosion testing in the acid at various temperatures. The mold wear during a year of use in the company, and a year of continuous acid exposure was then extrapolated for steel and stainless-steel molds. Nitric acid was significantly more effective than NaOH in dissolving rubber with full dissolution occurring after 3 h at 80 °C when stirred, losing 33 % of its initial mass, while NaOH lost only 0.3 % after 24 h. Stainless steel proved very resistant to acid corrosion at 50 °C with a calculated loss of 0.003 cm of thickness per year of submersion, while 1.7131 steel would lose 0.264 cm of thickness.

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Section: Introductionmentioning

confidence: 99%